JSON-lib框架，转换JSON、XML不再困难

林译川

2026-10-08 • 👁 0人浏览过

json-lib可以将java对象转成json格式的字符串，也可以将java对象转换成xml格式的文档，同样可以将json字符串转换成java对象或是将xml字符串转换成java对象。一、准备工作 1、首先要去官方下载json-lib工具包下载地址： http://www.php.cn/ 目前最新的是2.4的版本，本示例中使用的是v2.3；json-lib还需要以下依赖包： jakarta commons-lang 2.5 jakarta commons-beanutils 1.8.0 jakarta commons-collections 3.2.1 jakarta commons-logging 1.1.1 ezmorph 1.0.6 官方网址：http://www.php.cn/ 然后在工程中添加如下jar包：当然你也可以用2.4的json-lib库你可以在这里看看官方提供的示例： http://www.php.cn/ 由于本次介绍的示例需要junit工具，所以你还需要添加junit的jar文件，版本是4.8.2版本的，下载地址：http://www.php.cn/ 如果你还不了解JSON是什么？那么你应该可以看看http://www.php.cn/ 2、要转换的JavaBean的代码如下：

package com.hoo.entity;

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public class Student {

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private int id;

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private String name;

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private String email;

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private String address;

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private Birthday birthday;

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//setter、getter

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public String toString() {

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return this.name + "#" + this.id + "#" + this.address + "#" + this.birthday + "#" + this.email;

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}

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}

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CRLF Birthday.java

package com.hoo.entity;

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public class Birthday {

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private String birthday;

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public Birthday(String birthday) {

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super();

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this.birthday = birthday;

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}

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//setter、getter

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public Birthday() {}

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@Override

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public String toString() {

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return this.birthday;

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}

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}

CRLF 注意，上面的getter、setter方法省略了，自己构建下。 3、新建JsonlibTest测试类，基本代码如下：

package com.hoo.test;

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import java.lang.reflect.InvocationTargetException;

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import java.util.ArrayList;

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import java.util.Collection;

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import java.util.Date;

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import java.util.HashMap;

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import java.util.Iterator;

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import java.util.List;

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import java.util.Map;

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import java.util.Set;

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import net.sf.json.JSON;

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import net.sf.json.JSONArray;

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import net.sf.json.JSONFunction;

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import net.sf.json.JSONObject;

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import net.sf.json.JSONSerializer;

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import net.sf.json.JsonConfig;

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import net.sf.json.processors.JsonValueProcessor;

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import net.sf.json.util.PropertyFilter;

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import net.sf.json.xml.XMLSerializer;

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import org.apache.commons.beanutils.PropertyUtils;

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import org.junit.After;

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import org.junit.Before;

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import org.junit.Test;

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import com.hoo.entity.Birthday;

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import com.hoo.entity.Student;

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/**

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* function: 用json-lib转换java对象到JSON字符串

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* 读取json字符串到java对象，序列化jsonObject到xml

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* json-lib-version: json-lib-2.3-jdk15.jar

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* 依赖包:

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* commons-beanutils.jar

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* commons-collections-3.2.jar

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* ezmorph-1.0.3.jar

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* commons-lang.jar

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* commons-logging.jar

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* @author hoojo

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* @createDate Nov 28, 2010 2:28:39 PM

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* @file JsonlibTest.java

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* @package com.hoo.test

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* @project WebHttpUtils

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* @blog http://www.php.cn/

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* @email hoojo_@126.com

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* @version 1.0

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*/

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@SuppressWarnings({ "deprecation", "unchecked" })

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public class JsonlibTest {

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private JSONArray jsonArray = null;

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private JSONObject jsonObject = null;

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private Student bean = null;

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@Before

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public void init() {

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jsonArray = new JSONArray();

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jsonObject = new JSONObject();

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bean = new Student();

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bean.setAddress("address");

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bean.setEmail("email");

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bean.setId(1);

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bean.setName("haha");

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Birthday day = new Birthday();

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day.setBirthday("2010-11-22");

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bean.setBirthday(day);

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}

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@After

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public void destory() {

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jsonArray = null;

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jsonObject = null;

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bean = null;

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System.gc();

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}

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public final void fail(String string) {

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System.out.println(string);

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}

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public final void failRed(String string) {

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System.err.println(string);

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}

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}

CRLF 上面的init会在每个方法之前运行，destory会在每个方法完成后执行。分别用到了junit的@Before、@After注解，如果你对junit的这些注解不是很了解，可以看看junit官方的测试用例的example和doc； JSONObject是将Java对象转换成一个json的Object形式，JSONArray是将一个Java对象转换成json的Array格式。那什么是json的Object形式、Array形式？用通俗易懂的方法将，所谓的json的Object形式就是一个花括号里面存放的如JavaMap的键值对，如：{name:’hoojo’, age: 24}；那么json的Array形式呢？就是中括号，括起来的数组。如：[ ‘json’, true, 22]；如果你还想了解更多json方面的知识，请看：http://www.php.cn/ 除了上面的JSONArray、JSONObject可以将Java对象转换成JSON或是相反，将JSON字符串转换成Java对象，还有一个对象也可以完成上面的功能，它就是JSONSerializer；下面我们就来看看它们是怎么玩转Java对象和JSON的。二、 Java 对象序列化成 JSON 对象 1、将JavaObject转换吃JSON字符串在JsonlibTest中添加如下代码：

/*=========================Java Object >>>> JSON String ===========================*/

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/**

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* function:转Java Bean对象到JSON

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* @author hoojo

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* @createDate Nov 28, 2010 2:35:54 PM

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*/

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@Test

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public void writeEntity2JSON() {

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fail("==============Java Bean >>> JSON Object==================");

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fail(JSONObject.fromObject(bean).toString());

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fail("==============Java Bean >>> JSON Array==================");

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fail(JSONArray.fromObject(bean).toString());//array会在最外层套上[]

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fail("==============Java Bean >>> JSON Object ==================");

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fail(JSONSerializer.toJSON(bean).toString());

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fail("========================JsonConfig========================");

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JsonConfig jsonConfig = new JsonConfig();

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jsonConfig.registerJsonValueProcessor(Birthday.class, new JsonValueProcessor() {

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public Object processArrayValue(Object value, JsonConfig jsonConfig) {

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if (value == null) {

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return new Date();

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}

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return value;

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}

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public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {

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fail("key:" + key);

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return value + "##修改过的日期";

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}

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});

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jsonObject = JSONObject.fromObject(bean, jsonConfig);

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fail(jsonObject.toString());

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Student student = (Student) JSONObject.toBean(jsonObject, Student.class);

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fail(jsonObject.getString("birthday"));

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fail(student.toString());

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fail("#####################JsonPropertyFilter############################");

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jsonConfig.setJsonPropertyFilter(new PropertyFilter() {

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public boolean apply(Object source, String name, Object value) {

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fail(source + "%%%" + name + "--" + value);

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//忽略birthday属性

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if (value != null && Birthday.class.isAssignableFrom(value.getClass())) {

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return true;

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}

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return false;

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}

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});

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fail(JSONObject.fromObject(bean, jsonConfig).toString());

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fail("#################JavaPropertyFilter##################");

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jsonConfig.setRootClass(Student.class);

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jsonConfig.setJavaPropertyFilter(new PropertyFilter() {

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public boolean apply(Object source, String name, Object value) {

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fail(name + "@" + value + "#" + source);

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if ("id".equals(name) || "email".equals(name)) {

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value = name + "@@";

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return true;

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}

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return false;

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}

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});

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//jsonObject = JSONObject.fromObject(bean, jsonConfig);

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//student = (Student) JSONObject.toBean(jsonObject, Student.class);

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//fail(student.toString());

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student = (Student) JSONObject.toBean(jsonObject, jsonConfig);

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fail("Student:" + student.toString());

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}

CRLF fromObject将Java对象转换成json字符串，toBean将json对象转换成Java对象；上面方法值得注意的是使用了JsonConfig这个对象，这个对象可以在序列化的时候对JavaObject的数据进行处理、过滤等上面的jsonConfig的registerJsonValueProcessor方法可以完成对象值的处理和修改，比如处理生日为null时，给一个特定的值。同样setJsonPropertyFilter和setJavaPropertyFilter都是完成对转换后的值的处理。运行上面的代码可以在控制台看到如下结果：

==============Java Bean >>> JSON Object==================

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{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"haha"}

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==============Java Bean >>> JSON Array==================

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[{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"haha"}]

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==============Java Bean >>> JSON Object ==================

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{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"haha"}

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========================JsonConfig========================

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key:birthday

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{"address":"address","birthday":"2010-11-22##修改过的日期","email":"email","id":1,"name":"haha"}

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2010-11-22##修改过的日期

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haha#1#address#null#email

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#####################JsonPropertyFilter############################

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haha#1#address#2010-11-22#email%%%address--address

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haha#1#address#2010-11-22#email%%%birthday--2010-11-22

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haha#1#address#2010-11-22#email%%%email--email

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haha#1#address#2010-11-22#email%%%id--1

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haha#1#address#2010-11-22#email%%%name--haha

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{"address":"address","email":"email","id":1,"name":"haha"}

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#################JavaPropertyFilter##################

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address@address#null#0#null#null#null

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birthday@2010-11-22##修改过的日期#null#0#address#null#null

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email@email#null#0#address#null#null

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id@1#null#0#address#null#null

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name@haha#null#0#address#null#null

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Student:haha#0#address#null#null

CRLF 2、将JavaList集合转换吃JSON字符串

/**

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* function:转换Java List集合到JSON

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* @author hoojo

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* @createDate Nov 28, 2010 2:36:15 PM

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*/

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@Test

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public void writeList2JSON() {

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fail("==============Java List >>> JSON Array==================");

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List stu = new ArrayList();

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stu.add(bean);

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bean.setName("jack");

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stu.add(bean);

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fail(JSONArray.fromObject(stu).toString());

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fail(JSONSerializer.toJSON(stu).toString());

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}

CRLF 运行此方法后，可以看到控制台输出：

==============Java List >>> JSON Array==================

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[{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},

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{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"}]

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[{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},

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{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"}]

CRLF 如果你是转换List集合，一定得用JSONArray或是JSONSrializer提供的序列化方法。如果你用JSONObject.fromObject方法转换List会出现异常，通常使用JSONSrializer这个JSON序列化的方法，它会自动识别你传递的对象的类型，然后转换成相应的JSON字符串。 3、将Map集合转换成JSON对象

/**

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* function:转Java Map对象到JSON

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* @author hoojo

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* @createDate Nov 28, 2010 2:37:35 PM

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*/

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@Test

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public void writeMap2JSON() {

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Map map = new HashMap();

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map.put("A", bean);

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bean.setName("jack");

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map.put("B", bean);

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map.put("name", "json");

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map.put("bool", Boolean.TRUE);

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map.put("int", new Integer(1));

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map.put("arr", new String[] { "a", "b" });

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map.put("func", "function(i){ return this.arr[i]; }");

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fail("==============Java Map >>> JSON Object==================");

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fail(JSONObject.fromObject(map).toString());

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fail("==============Java Map >>> JSON Array ==================");

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fail(JSONArray.fromObject(map).toString());

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fail("==============Java Map >>> JSON Object==================");

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fail(JSONSerializer.toJSON(map).toString());

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}

CRLF 上面的Map集合有JavaBean、String、Boolean、Integer、以及Array和js的function函数的字符串。运行上面的程序，结果如下：

==============Java Map >>> JSON Object==================

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{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,

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"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json",

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"func":function(i){ return this.arr[i]; },"bool":true}

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==============Java Map >>> JSON Array ==================

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[{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,

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"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json",

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"func":function(i){ return this.arr[i]; },"bool":true}]

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==============Java Map >>> JSON Object==================

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{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,

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"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json",

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"func":function(i){ return this.arr[i]; },"bool":true}

CRLF 4、将更多类型转换成JSON

/**

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* function: 转换更多数组类型到JSON

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* @author hoojo

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* @createDate Nov 28, 2010 2:39:19 PM

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*/

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@Test

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public void writeObject2JSON() {

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String[] sa = {"a", "b", "c"};

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fail("==============Java StringArray >>> JSON Array ==================");

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fail(JSONArray.fromObject(sa).toString());

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fail(JSONSerializer.toJSON(sa).toString());

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fail("==============Java boolean Array >>> JSON Array ==================");

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boolean[] bo = { true, false, true };

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fail(JSONArray.fromObject(bo).toString());

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fail(JSONSerializer.toJSON(bo).toString());

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Object[] o = { 1, "a", true, 'A', sa, bo };

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fail("==============Java Object Array >>> JSON Array ==================");

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fail(JSONArray.fromObject(o).toString());

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fail(JSONSerializer.toJSON(o).toString());

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fail("==============Java String >>> JSON ==================");

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fail(JSONArray.fromObject("['json','is','easy']").toString());

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fail(JSONObject.fromObject("{'json':'is easy'}").toString());

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fail(JSONSerializer.toJSON("['json','is','easy']").toString());

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fail("==============Java JSONObject >>> JSON ==================");

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jsonObject = new JSONObject()

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.element("string", "JSON")

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.element("integer", "1")

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.element("double", "2.0")

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.element("boolean", "true");

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fail(JSONSerializer.toJSON(jsonObject).toString());

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fail("==============Java JSONArray >>> JSON ==================");

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jsonArray = new JSONArray()

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.element( "JSON" )

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.element( "1" )

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.element( "2.0" )

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.element( "true" );

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fail(JSONSerializer.toJSON(jsonArray).toString());

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fail("==============Java JSONArray JsonConfig#setArrayMode >>> JSON ==================");

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List input = new ArrayList();

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input.add("JSON");

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input.add("1");

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input.add("2.0");

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input.add("true");

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JSONArray jsonArray = (JSONArray) JSONSerializer.toJSON( input );

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JsonConfig jsonConfig = new JsonConfig();

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jsonConfig.setArrayMode( JsonConfig.MODE_OBJECT_ARRAY );

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Object[] output = (Object[]) JSONSerializer.toJava(jsonArray, jsonConfig);

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System.out.println(output[0]);

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fail("==============Java JSONFunction >>> JSON ==================");

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String str = "{'func': function( param ){ doSomethingWithParam(param); }}";

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JSONObject jsonObject = (JSONObject) JSONSerializer.toJSON(str);

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JSONFunction func = (JSONFunction) jsonObject.get("func");

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fail(func.getParams()[0]);

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fail(func.getText() );

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}

CRLF 运行后结果如下：

==============Java StringArray >>> JSON Array ==================

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["a","b","c"]

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["a","b","c"]

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==============Java boolean Array >>> JSON Array ==================

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[true,false,true]

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[true,false,true]

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==============Java Object Array >>> JSON Array ==================

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[1,"a",true,"A",["a","b","c"],[true,false,true]]

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[1,"a",true,"A",["a","b","c"],[true,false,true]]

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==============Java String >>> JSON ==================

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["json","is","easy"]

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{"json":"is easy"}

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["json","is","easy"]

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==============Java JSONObject >>> JSON ==================

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{"string":"JSON","integer":"1","double":"2.0","boolean":"true"}

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==============Java JSONArray >>> JSON ==================

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["JSON","1","2.0","true"]

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==============Java JSONArray JsonConfig#setArrayMode >>> JSON ==================

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JSON

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==============Java JSONFunction >>> JSON ==================

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param

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doSomethingWithParam(param);

CRLF 这里还有一个JSONFunction的对象，可以转换JavaScript的function。可以获取方法参数和方法体。同时，还可以用JSONObject、JSONArray构建Java对象，完成Java对象到JSON字符串的转换。三、 JSON 对象反序列化成 Java 对象 1、将json字符串转成Java对象

private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"}," +

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"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";

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/**

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* function:将json字符串转化为java对象

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* @author hoojo

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* @createDate Nov 28, 2010 3:01:16 PM

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*/

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@Test

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public void readJSON2Bean() {

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fail("==============JSON Object String >>> Java Bean ==================");

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jsonObject = JSONObject.fromObject(json);

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Student stu = (Student) JSONObject.toBean(jsonObject, Student.class);

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fail(stu.toString());

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}

CRLF 运行后，结果如下：

==============JSON Object String >>> Java Bean ==================

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tom#22#chian#2010-11-22#email@123.com

CRLF 2、将json字符串转换成动态Java对象(MorphDynaBean)

private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+

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"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";

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@Test

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public void readJSON2DynaBean() {

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try {

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fail("==============JSON Object String >>> Java MorphDynaBean ==================");

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JSON jo = JSONSerializer.toJSON(json);

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Object o = JSONSerializer.toJava(jo);//MorphDynaBean

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fail(PropertyUtils.getProperty(o, "address").toString());

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jsonObject = JSONObject.fromObject(json);

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fail(jsonObject.getString("email"));

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o = JSONSerializer.toJava(jsonObject);//MorphDynaBean

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fail(PropertyUtils.getProperty(o, "name").toString());

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} catch (IllegalAccessException e) {

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e.printStackTrace();

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} catch (InvocationTargetException e) {

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e.printStackTrace();

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} catch (NoSuchMethodException e) {

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e.printStackTrace();

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}

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}

CRLF 转换后的对象Object是一个MorphDynaBean的动态JavaBean，通过PropertyUtils可以获得指定的属性的值。运行后结果如下：

==============JSON Object String >>> Java MorphDynaBean =============

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chian

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email@123.com

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tom

CRLF 3、将json字符串转成Java的Array数组

private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+

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"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";

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@Test

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public void readJSON2Array() {

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try {

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fail("==============JSON Arry String >>> Java Array ==================");

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json = "[" + json + "]";

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jsonArray = JSONArray.fromObject(json);

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fail("#%%%" + jsonArray.get(0).toString());

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Object[] os = jsonArray.toArray();

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System.out.println(os.length);

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fail(JSONArray.fromObject(json).join(""));

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fail(os[0].toString());

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Student[] stus = (Student[]) JSONArray.toArray(jsonArray, Student.class);

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System.out.println(stus.length);

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System.out.println(stus[0]);

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} catch (Exception e) {

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e.printStackTrace();

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}

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}

CRLF 运行的结果如下：

==============JSON Arry String >>> Java Array ==================

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#%%%{"address":"chian","birthday":{"birthday":"2010-11-22"},"email":"email@123.com","id":22,"name":"tom"}

CRLF

1

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{"address":"chian","birthday":{"birthday":"2010-11-22"},"email":"email@123.com","id":22,"name":"tom"}

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{"address":"chian","birthday":{"birthday":"2010-11-22"},"email":"email@123.com","id":22,"name":"tom"}

CRLF

1

CRLF

tom#22#chian#2010-11-22#email@123.com

CRLF 4、将JSON字符串转成Java的List集合

private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+

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"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";

CRLF

@Test

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public void readJSON2List() {

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try {

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fail("==============JSON Arry String >>> Java List ==================");

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json = "[" + json + "]";

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jsonArray = JSONArray.fromObject(json);

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List list = JSONArray.toList(jsonArray, Student.class);

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System.out.println(list.size());

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System.out.println(list.get(0));

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list = JSONArray.toList(jsonArray);

CRLF

System.out.println(list.size());

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System.out.println(list.get(0));//MorphDynaBean

CRLF

} catch (Exception e) {

CRLF

e.printStackTrace();

CRLF

}

CRLF

}

CRLF 运行后结果如下：

==============JSON Arry String >>> Java List ==================

CRLF

1

CRLF

tom#22#chian#2010-11-22#email@123.com

CRLF

1

CRLF

net.sf.ezmorph.bean.MorphDynaBean@141b571[

CRLF

{id=22, birthday=net.sf.ezmorph.bean.MorphDynaBean@b23210[

CRLF

{birthday=2010-11-22}

CRLF

], address=chian, email=email@123.com, name=tom}

CRLF

]

CRLF 5、将json字符串转换成Collection接口

private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+

CRLF

"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";

CRLF

@Test

CRLF

public void readJSON2Collection() {

CRLF

try {

CRLF

fail("==============JSON Arry String >>> Java Collection ==================");

CRLF

json = "[" + json + "]";

CRLF

jsonArray = JSONArray.fromObject(json);

CRLF

Collection con = JSONArray.toCollection(jsonArray, Student.class);

CRLF

System.out.println(con.size());

CRLF

Object[] stt = con.toArray();

CRLF

System.out.println(stt.length);

CRLF

fail(stt[0].toString());

CRLF

} catch (Exception e) {

CRLF

e.printStackTrace();

CRLF

}

CRLF

}

CRLF 刚才上面的将json转换成list提示该方法过时，这里有toCollection，可以用此方法代替toList方法；运行后结果如下：

==============JSON Arry String >>> Java Collection ==================

CRLF

1

CRLF

1

CRLF

tom#22#chian#2010-11-22#email@123.com

CRLF 6、将json字符串转换成Map集合

@Test

CRLF

public void readJSON2Map() {

CRLF

try {

CRLF

fail("==============JSON Arry String >>> Java Map ==================");

CRLF

json = "{\"arr\":[\"a\",\"b\"],\"A\":{\"address\":\"address\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+

CRLF

"\"email\":\"email\",\"id\":1,\"name\":\"jack\"},\"int\":1,"+

CRLF

"\"B\":{\"address\":\"address\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+

CRLF

"\"email\":\"email\",\"id\":1,\"name\":\"jack\"},\"name\":\"json\",\"bool\":true}";

CRLF

jsonObject = JSONObject.fromObject(json);

CRLF

Map> clazzMap = new HashMap>();

CRLF

clazzMap.put("arr", String[].class);

CRLF

clazzMap.put("A", Student.class);

CRLF

clazzMap.put("B", Student.class);

CRLF

Map mapBean = (Map) JSONObject.toBean(jsonObject, Map.class, clazzMap);

CRLF

System.out.println(mapBean);

CRLF

Set set = mapBean.keySet();

CRLF

Iterator iter = set.iterator();

CRLF

while (iter.hasNext()) {

CRLF

String key = iter.next();

CRLF

fail(key + ":" + mapBean.get(key).toString());

CRLF

}

CRLF

} catch (Exception e) {

CRLF

e.printStackTrace();

CRLF

}

CRLF

}

CRLF 运行后结果如下：

==============JSON Arry String >>> Java Map ==================

CRLF

{A=jack#1#address#2010-11-22#email, arr=[a, b], B=jack#1#address#2010-11-22#email, int=1, name=json, bool=true}

CRLF

A:jack#1#address#2010-11-22#email

CRLF

arr:[a, b]

CRLF

B:jack#1#address#2010-11-22#email

CRLF

int:1

CRLF

name:json

CRLF

bool:true

CRLF 四、 JSON-lib 对 XML 的支持 1、将Java对象到XML

/*============================Java Object >>>>> XML ==========================*/

CRLF

/**

CRLF

* function: 转换Java对象到XML

CRLF

* 需要额外的jar包：xom.jar

CRLF

* @author hoojo

CRLF

* @createDate Nov 28, 2010 2:39:55 PM

CRLF

*/

CRLF

@Test

CRLF

public void writeObject2XML() {

CRLF

XMLSerializer xmlSerializer = new XMLSerializer();

CRLF

fail("==============Java String Array >>> XML ==================");

CRLF

//xmlSerializer.setElementName("bean");

CRLF

fail(xmlSerializer.write(JSONArray.fromObject(bean)));

CRLF

String[] sa = {"a", "b", "c"};

CRLF

fail("==============Java String Array >>> XML ==================");

CRLF

fail(xmlSerializer.write(JSONArray.fromObject(sa)));

CRLF

fail("==============Java boolean Array >>> XML ==================");

CRLF

boolean[] bo = { true, false, true };

CRLF

fail(xmlSerializer.write(JSONArray.fromObject(bo)));

CRLF

fail(xmlSerializer.write(JSONSerializer.toJSON(bo)));

CRLF

Object[] o = { 1, "a", true, 'A', sa, bo };

CRLF

fail("==============Java Object Array >>> JSON Array ==================");

CRLF

fail(xmlSerializer.write(JSONArray.fromObject(o)));

CRLF

fail(xmlSerializer.write(JSONSerializer.toJSON(o)));

CRLF

fail("==============Java String >>> JSON ==================");

CRLF

fail(xmlSerializer.write(JSONArray.fromObject("['json','is','easy']")).toString());

CRLF

fail(xmlSerializer.write(JSONObject.fromObject("{'json':'is easy'}")).toString());

CRLF

fail(xmlSerializer.write(JSONSerializer.toJSON("['json','is','easy']")).toString());

CRLF

}

CRLF 主要运用的是XMLSerializer的write方法，这个方法可以完成java对象到xml的转换，不过你很容易就可以看到这个xml序列化对象，需要先将java对象转成json对象，然后再将json转换吃xml文档。运行后结果如下：


==============Java String Array >>> XML ==================


address
2010-11-22
email1haha

 
==============Java String Array >>> XML ==================

abc
 
==============Java boolean Array >>> XML ==================

truefalsetrue
 

truefalsetrue
 
==============Java Object Array >>> JSON Array ==================

1atrueA
abctrue
falsetrue
 

1atrueA
abctrue
falsetrue
 
==============Java String >>> JSON ==================

jsoniseasy
 

is easy
 

jsoniseasy

CRLF 上面的节点名称有点乱，你可以通过setElementName设置节点名称 2、将XML转换成Java对象

/*============================XML String >>>>> Java Object ==========================*/

CRLF

/**

CRLF

* function:转换xml文档到java对象

CRLF

* @author hoojo

CRLF

* @createDate Nov 28, 2010 3:00:27 PM

CRLF

*/

CRLF

@Test

CRLF

public void readXML2Object() {

CRLF

XMLSerializer xmlSerializer = new XMLSerializer();

CRLF

fail("============== XML >>>> Java String Array ==================");

CRLF

String[] sa = {"a", "b", "c"};

CRLF

jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject(sa)));

CRLF

fail(jsonArray.toString());

CRLF

String[] s = (String[]) JSONArray.toArray(jsonArray, String.class);

CRLF

fail(s[0].toString());

CRLF

fail("============== XML >>>> Java boolean Array ==================");

CRLF

boolean[] bo = { true, false, true };

CRLF

jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject(bo)));

CRLF

bo = (boolean[]) JSONArray.toArray(jsonArray, boolean.class);

CRLF

fail(bo.toString());

CRLF

System.out.println(bo[0]);

CRLF

jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONSerializer.toJSON(bo)));

CRLF

bo = (boolean[]) JSONArray.toArray(jsonArray, boolean.class);

CRLF

fail(bo.toString());

CRLF

System.out.println(bo[0]);

CRLF

fail("==============Java Object Array >>> JSON Array ==================");

CRLF

Object[] o = { 1, "a", true, 'A', sa, bo };

CRLF

jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject(o)));

CRLF

System.out.println(jsonArray.getInt(0));

CRLF

System.out.println(jsonArray.get(1));

CRLF

System.out.println(jsonArray.getBoolean(2));

CRLF

jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONSerializer.toJSON(o)));

CRLF

System.out.println(jsonArray.get(4));

CRLF

System.out.println(jsonArray.getJSONArray(5).get(0));

CRLF

System.out.println(jsonArray.get(5));

CRLF

fail("==============Java String >>> JSON ==================");

CRLF

    jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject("['json','is','easy']")).toString());

CRLF

s = (String[]) JSONArray.toArray(jsonArray, String.class);

CRLF

fail(s[0].toString());

CRLF

    jsonObject = (JSONObject) xmlSerializer.read(xmlSerializer.write(JSONObject.fromObject("{'json':'is easy'}")).toString());

CRLF

Object obj = JSONObject.toBean(jsonObject);

CRLF

System.out.println(obj);

CRLF

    jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONSerializer.toJSON("['json','is','easy']")).toString());

CRLF

s = (String[]) JSONArray.toArray(jsonArray, String.class);

CRLF

fail(s[1].toString());

CRLF

}

CRLF 主要运用到XMLSerializer的read方法，将xml内容读取后，转换成Java对象。运行后结果如下：

============== XML >>>> Java String Array ==================

CRLF

["a","b","c"]

CRLF

a

CRLF

============== XML >>>> Java boolean Array ==================

CRLF

[Z@15856a5

CRLF

true

CRLF

[Z@79ed7f

CRLF

true

CRLF

==============Java Object Array >>> JSON Array ==================

CRLF

1

CRLF

a

CRLF

true

CRLF

["a","b","c"]

CRLF

true

CRLF

["true","false","true"]

CRLF

==============Java String >>> JSON ==================

CRLF

JSON

CRLF

net.sf.ezmorph.bean.MorphDynaBean@c09554[

CRLF

{json=is easy}

CRLF

]

CRLF

is

CRLF 3、将xml的字符串内容，转换成Java的Array对象

@Test

CRLF

public void testReadXml2Array() {

CRLF

String str = "" +

CRLF

"" +

CRLF

"return matrix[i][j];" +

CRLF

"" +

CRLF

"";

CRLF

JSONArray json = (JSONArray) new XMLSerializer().read(str);

CRLF

fail(json.toString());

CRLF

}

CRLF 上面是一段xml字符串格式的文档，将其转换为JSONArray对象。转换后结果如下：

[function(i,j){ return matrix[i][j]; }]

CRLF 就是一个数组；以上就是JSON-lib框架，转换JSON、XML不再困难的内容，更多相关内容请关注PHP中文网（www.php.cn）！

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