JSON-lib框架,转换JSON、XML不再困难
2012-11-25 13:00
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JSON-lib框架,转换JSON、XML不再困难
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://sourceforge.net/projects/json-lib/files/json-lib/json-lib-2.4/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 2.5jakarta commons-beanutils 1.8.0jakarta commons-collections 3.2.1jakarta commons-logging 1.1.1ezmorph 1.0.6官方网址:http://json-lib.sourceforge.net/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://json-lib.sourceforge.net/usage.html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:https://github.com/KentBeck/junit/downloads如果你还不了解JSON是什么?那么你应该可以看看http://www.json.org/json-zh.html2、 要转换的JavaBean的代码如下:package com.hoo.entity;
public class Student {
private int id;
private String name;
private String email;
private String address;
private Birthday birthday;
//setter、getter
public String toString() {
return this.name + "#" + this.id + "#" + this.address + "#" + this.birthday + "#" + this.email;
}
}Birthday.java
package com.hoo.entity;
public class Birthday {
private String birthday;
public Birthday(String birthday) {
super();
this.birthday = birthday;
}
//setter、getter
public Birthday() {}
@Override
public String toString() {
return this.birthday;
}
}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;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import net.sf.json.JSON;
import net.sf.json.JSONArray;
import net.sf.json.JSONFunction;
import net.sf.json.JSONObject;
import net.sf.json.JSONSerializer;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;
import net.sf.json.util.PropertyFilter;
import net.sf.json.xml.XMLSerializer;
import org.apache.commons.beanutils.PropertyUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.hoo.entity.Birthday;
import com.hoo.entity.Student;
/**
* <b>function:</b> 用json-lib转换java对象到JSON字符串
* 读取json字符串到java对象,序列化jsonObject到xml
* json-lib-version: json-lib-2.3-jdk15.jar
* 依赖包:
* commons-beanutils.jar
* commons-collections-3.2.jar
* ezmorph-1.0.3.jar
* commons-lang.jar
* commons-logging.jar
* @author hoojo
* @createDate Nov 28, 2010 2:28:39 PM
* @file JsonlibTest.java
* @package com.hoo.test
* @project WebHttpUtils
* @blog http://blog.csdn.net/IBM_hoojo[/code]* @email hoojo_@126.com* @version 1.0*/@SuppressWarnings({ "deprecation", "unchecked" })public class JsonlibTest {private JSONArray jsonArray = null;private JSONObject jsonObject = null;private Student bean = null;@Beforepublic void init() {jsonArray = new JSONArray();jsonObject = new JSONObject();bean = new Student();bean.setAddress("address");bean.setEmail("email");bean.setId(1);bean.setName("haha");Birthday day = new Birthday();day.setBirthday("2010-11-22");bean.setBirthday(day);}@Afterpublic void destory() {jsonArray = null;jsonObject = null;bean = null;System.gc();}public final void fail(String string) {System.out.println(string);}public final void failRed(String string) {System.err.println(string);}}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.json.org/json-zh.html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 ===========================*//*** <b>function:</b>转Java Bean对象到JSON* @author hoojo* @createDate Nov 28, 2010 2:35:54 PM*/@Testpublic void writeEntity2JSON() {fail("==============Java Bean >>> JSON Object==================");fail(JSONObject.fromObject(bean).toString());fail("==============Java Bean >>> JSON Array==================");fail(JSONArray.fromObject(bean).toString());//array会在最外层套上[]fail("==============Java Bean >>> JSON Object ==================");fail(JSONSerializer.toJSON(bean).toString());fail("========================JsonConfig========================");JsonConfig jsonConfig = new JsonConfig();jsonConfig.registerJsonValueProcessor(Birthday.class, new JsonValueProcessor() {public Object processArrayValue(Object value, JsonConfig jsonConfig) {if (value == null) {return new Date();}return value;}public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {fail("key:" + key);return value + "##修改过的日期";}});jsonObject = JSONObject.fromObject(bean, jsonConfig);fail(jsonObject.toString());Student student = (Student) JSONObject.toBean(jsonObject, Student.class);fail(jsonObject.getString("birthday"));fail(student.toString());fail("#####################JsonPropertyFilter############################");jsonConfig.setJsonPropertyFilter(new PropertyFilter() {public boolean apply(Object source, String name, Object value) {fail(source + "%%%" + name + "--" + value);//忽略birthday属性if (value != null && Birthday.class.isAssignableFrom(value.getClass())) {return true;}return false;}});fail(JSONObject.fromObject(bean, jsonConfig).toString());fail("#################JavaPropertyFilter##################");jsonConfig.setRootClass(Student.class);jsonConfig.setJavaPropertyFilter(new PropertyFilter() {public boolean apply(Object source, String name, Object value) {fail(name + "@" + value + "#" + source);if ("id".equals(name) || "email".equals(name)) {value = name + "@@";return true;}return false;}});//jsonObject = JSONObject.fromObject(bean, jsonConfig);//student = (Student) JSONObject.toBean(jsonObject, Student.class);//fail(student.toString());student = (Student) JSONObject.toBean(jsonObject, jsonConfig);fail("Student:" + student.toString());}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=================={"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"haha"}==============Java Bean >>> JSON Array==================[{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"haha"}]==============Java Bean >>> JSON Object =================={"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"haha"}========================JsonConfig========================key:birthday{"address":"address","birthday":"2010-11-22##修改过的日期","email":"email","id":1,"name":"haha"}2010-11-22##修改过的日期haha#1#address#null#email#####################JsonPropertyFilter############################haha#1#address#2010-11-22#email%%%address--addresshaha#1#address#2010-11-22#email%%%birthday--2010-11-22haha#1#address#2010-11-22#email%%%email--emailhaha#1#address#2010-11-22#email%%%id--1haha#1#address#2010-11-22#email%%%name--haha{"address":"address","email":"email","id":1,"name":"haha"}#################JavaPropertyFilter##################address@address#null#0#null#null#nullbirthday@2010-11-22##修改过的日期#null#0#address#null#nullemail@email#null#0#address#null#nullid@1#null#0#address#null#nullname@haha#null#0#address#null#nullStudent:haha#0#address#null#null2、 将JavaList集合转换吃JSON字符串/*** <b>function:</b>转换Java List集合到JSON* @author hoojo* @createDate Nov 28, 2010 2:36:15 PM*/@Testpublic void writeList2JSON() {fail("==============Java List >>> JSON Array==================");List<Student> stu = new ArrayList<Student>();stu.add(bean);bean.setName("jack");stu.add(bean);fail(JSONArray.fromObject(stu).toString());fail(JSONSerializer.toJSON(stu).toString());}运行此方法后,可以看到控制台输出:==============Java List >>> JSON Array==================[{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"}][{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"}]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/*** <b>function:</b>转Java Map对象到JSON* @author hoojo* @createDate Nov 28, 2010 2:37:35 PM*/@Testpublic void writeMap2JSON() {Map<String, Object> map = new HashMap<String, Object>();map.put("A", bean);bean.setName("jack");map.put("B", bean);map.put("name", "json");map.put("bool", Boolean.TRUE);map.put("int", new Integer(1));map.put("arr", new String[] { "a", "b" });map.put("func", "function(i){ return this.arr[i]; }");fail("==============Java Map >>> JSON Object==================");fail(JSONObject.fromObject(map).toString());fail("==============Java Map >>> JSON Array ==================");fail(JSONArray.fromObject(map).toString());fail("==============Java Map >>> JSON Object==================");fail(JSONSerializer.toJSON(map).toString());}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=================={"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json","func":function(i){ return this.arr[i]; },"bool":true}==============Java Map >>> JSON Array ==================[{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json","func":function(i){ return this.arr[i]; },"bool":true}]==============Java Map >>> JSON Object=================={"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json","func":function(i){ return this.arr[i]; },"bool":true}4、 将更多类型转换成JSON/*** <b>function:</b> 转换更多数组类型到JSON* @author hoojo* @createDate Nov 28, 2010 2:39:19 PM*/@Testpublic void writeObject2JSON() {String[] sa = {"a", "b", "c"};fail("==============Java StringArray >>> JSON Array ==================");fail(JSONArray.fromObject(sa).toString());fail(JSONSerializer.toJSON(sa).toString());fail("==============Java boolean Array >>> JSON Array ==================");boolean[] bo = { true, false, true };fail(JSONArray.fromObject(bo).toString());fail(JSONSerializer.toJSON(bo).toString());Object[] o = { 1, "a", true, 'A', sa, bo };fail("==============Java Object Array >>> JSON Array ==================");fail(JSONArray.fromObject(o).toString());fail(JSONSerializer.toJSON(o).toString());fail("==============Java String >>> JSON ==================");fail(JSONArray.fromObject("['json','is','easy']").toString());fail(JSONObject.fromObject("{'json':'is easy'}").toString());fail(JSONSerializer.toJSON("['json','is','easy']").toString());fail("==============Java JSONObject >>> JSON ==================");jsonObject = new JSONObject().element("string", "JSON").element("integer", "1").element("double", "2.0").element("boolean", "true");fail(JSONSerializer.toJSON(jsonObject).toString());fail("==============Java JSONArray >>> JSON ==================");jsonArray = new JSONArray().element( "JSON" ).element( "1" ).element( "2.0" ).element( "true" );fail(JSONSerializer.toJSON(jsonArray).toString());fail("==============Java JSONArray JsonConfig#setArrayMode >>> JSON ==================");List input = new ArrayList();input.add("JSON");input.add("1");input.add("2.0");input.add("true");JSONArray jsonArray = (JSONArray) JSONSerializer.toJSON( input );JsonConfig jsonConfig = new JsonConfig();jsonConfig.setArrayMode( JsonConfig.MODE_OBJECT_ARRAY );Object[] output = (Object[]) JSONSerializer.toJava(jsonArray, jsonConfig);System.out.println(output[0]);fail("==============Java JSONFunction >>> JSON ==================");String str = "{'func': function( param ){ doSomethingWithParam(param); }}";JSONObject jsonObject = (JSONObject) JSONSerializer.toJSON(str);JSONFunction func = (JSONFunction) jsonObject.get("func");fail(func.getParams()[0]);fail(func.getText() );}运行后结果如下:==============Java StringArray >>> JSON Array ==================["a","b","c"]["a","b","c"]==============Java boolean Array >>> JSON Array ==================[true,false,true][true,false,true]==============Java Object Array >>> JSON Array ==================[1,"a",true,"A",["a","b","c"],[true,false,true]][1,"a",true,"A",["a","b","c"],[true,false,true]]==============Java String >>> JSON ==================["json","is","easy"]{"json":"is easy"}["json","is","easy"]==============Java JSONObject >>> JSON =================={"string":"JSON","integer":"1","double":"2.0","boolean":"true"}==============Java JSONArray >>> JSON ==================["JSON","1","2.0","true"]==============Java JSONArray JsonConfig#setArrayMode >>> JSON ==================JSON==============Java JSONFunction >>> JSON ==================paramdoSomethingWithParam(param);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\"}," +"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";/*** <b>function:</b>将json字符串转化为java对象* @author hoojo* @createDate Nov 28, 2010 3:01:16 PM*/@Testpublic void readJSON2Bean() {fail("==============JSON Object String >>> Java Bean ==================");jsonObject = JSONObject.fromObject(json);Student stu = (Student) JSONObject.toBean(jsonObject, Student.class);fail(stu.toString());}运行后,结果如下:==============JSON Object String >>> Java Bean ==================tom#22#chian#2010-11-22#email@123.com2、 将json字符串转换成动态Java对象(MorphDynaBean)private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";@Testpublic void readJSON2DynaBean() {try {fail("==============JSON Object String >>> Java MorphDynaBean ==================");JSON jo = JSONSerializer.toJSON(json);Object o = JSONSerializer.toJava(jo);//MorphDynaBeanfail(PropertyUtils.getProperty(o, "address").toString());jsonObject = JSONObject.fromObject(json);fail(jsonObject.getString("email"));o = JSONSerializer.toJava(jsonObject);//MorphDynaBeanfail(PropertyUtils.getProperty(o, "name").toString());} catch (IllegalAccessException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (NoSuchMethodException e) {e.printStackTrace();}}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 =============chianemail@123.comtom3、 将json字符串转成Java的Array数组private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";@Testpublic void readJSON2Array() {try {fail("==============JSON Arry String >>> Java Array ==================");json = "[" + json + "]";jsonArray = JSONArray.fromObject(json);fail("#%%%" + jsonArray.get(0).toString());Object[] os = jsonArray.toArray();System.out.println(os.length);fail(JSONArray.fromObject(json).join(""));fail(os[0].toString());Student[] stus = (Student[]) JSONArray.toArray(jsonArray, Student.class);System.out.println(stus.length);System.out.println(stus[0]);} catch (Exception e) {e.printStackTrace();}}运行的结果如下:==============JSON Arry String >>> Java Array ==================#%%%{"address":"chian","birthday":{"birthday":"2010-11-22"},"email":"email@123.com","id":22,"name":"tom"}1{"address":"chian","birthday":{"birthday":"2010-11-22"},"email":"email@123.com","id":22,"name":"tom"}{"address":"chian","birthday":{"birthday":"2010-11-22"},"email":"email@123.com","id":22,"name":"tom"}1tom#22#chian#2010-11-22#email@123.com4、 将JSON字符串转成Java的List集合private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";@Testpublic void readJSON2List() {try {fail("==============JSON Arry String >>> Java List ==================");json = "[" + json + "]";jsonArray = JSONArray.fromObject(json);List<Student> list = JSONArray.toList(jsonArray, Student.class);System.out.println(list.size());System.out.println(list.get(0));list = JSONArray.toList(jsonArray);System.out.println(list.size());System.out.println(list.get(0));//MorphDynaBean} catch (Exception e) {e.printStackTrace();}}运行后结果如下:==============JSON Arry String >>> Java List ==================1tom#22#chian#2010-11-22#email@123.com1net.sf.ezmorph.bean.MorphDynaBean@141b571[{id=22, birthday=net.sf.ezmorph.bean.MorphDynaBean@b23210[{birthday=2010-11-22}], address=chian, email=email@123.com, name=tom}]5、 将json字符串转换成Collection接口private String json = "{\"address\":\"chian\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+"\"email\":\"email@123.com\",\"id\":22,\"name\":\"tom\"}";@Testpublic void readJSON2Collection() {try {fail("==============JSON Arry String >>> Java Collection ==================");json = "[" + json + "]";jsonArray = JSONArray.fromObject(json);Collection<Student> con = JSONArray.toCollection(jsonArray, Student.class);System.out.println(con.size());Object[] stt = con.toArray();System.out.println(stt.length);fail(stt[0].toString());} catch (Exception e) {e.printStackTrace();}}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 ==================11tom#22#chian#2010-11-22#email@123.com6、 将json字符串转换成Map集合@Testpublic void readJSON2Map() {try {fail("==============JSON Arry String >>> Java Map ==================");json = "{\"arr\":[\"a\",\"b\"],\"A\":{\"address\":\"address\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+"\"email\":\"email\",\"id\":1,\"name\":\"jack\"},\"int\":1,"+"\"B\":{\"address\":\"address\",\"birthday\":{\"birthday\":\"2010-11-22\"},"+"\"email\":\"email\",\"id\":1,\"name\":\"jack\"},\"name\":\"json\",\"bool\":true}";jsonObject = JSONObject.fromObject(json);Map<String, Class<?>> clazzMap = new HashMap<String, Class<?>>();clazzMap.put("arr", String[].class);clazzMap.put("A", Student.class);clazzMap.put("B", Student.class);Map<String, ?> mapBean = (Map) JSONObject.toBean(jsonObject, Map.class, clazzMap);System.out.println(mapBean);Set<String> set = mapBean.keySet();Iterator<String> iter = set.iterator();while (iter.hasNext()) {String key = iter.next();fail(key + ":" + mapBean.get(key).toString());}} catch (Exception e) {e.printStackTrace();}}运行后结果如下:==============JSON Arry String >>> Java Map =================={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}A:jack#1#address#2010-11-22#emailarr:[a, b]B:jack#1#address#2010-11-22#emailint:1name:jsonbool:true四、 JSON-lib对XML的支持1、 将Java对象到XML/*============================Java Object >>>>> XML ==========================*//*** <b>function:</b> 转换Java对象到XML* 需要额外的jar包:xom.jar* @author hoojo* @createDate Nov 28, 2010 2:39:55 PM*/@Testpublic void writeObject2XML() {XMLSerializer xmlSerializer = new XMLSerializer();fail("==============Java String Array >>> XML ==================");//xmlSerializer.setElementName("bean");fail(xmlSerializer.write(JSONArray.fromObject(bean)));String[] sa = {"a", "b", "c"};fail("==============Java String Array >>> XML ==================");fail(xmlSerializer.write(JSONArray.fromObject(sa)));fail("==============Java boolean Array >>> XML ==================");boolean[] bo = { true, false, true };fail(xmlSerializer.write(JSONArray.fromObject(bo)));fail(xmlSerializer.write(JSONSerializer.toJSON(bo)));Object[] o = { 1, "a", true, 'A', sa, bo };fail("==============Java Object Array >>> JSON Array ==================");fail(xmlSerializer.write(JSONArray.fromObject(o)));fail(xmlSerializer.write(JSONSerializer.toJSON(o)));fail("==============Java String >>> JSON ==================");fail(xmlSerializer.write(JSONArray.fromObject("['json','is','easy']")).toString());fail(xmlSerializer.write(JSONObject.fromObject("{'json':'is easy'}")).toString());fail(xmlSerializer.write(JSONSerializer.toJSON("['json','is','easy']")).toString());}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 ==================<?xml version="1.0" encoding="UTF-8"?><a><e class="object"><address type="string">address</address><birthday class="object"><birthday type="string">2010-11-22</birthday></birthday><email type="string">email</email><id type="number">1</id><name type="string">haha</name></e></a>==============Java String Array >>> XML ==================<?xml version="1.0" encoding="UTF-8"?><a><e type="string">a</e><e type="string">b</e><e type="string">c</e></a>==============Java boolean Array >>> XML ==================<?xml version="1.0" encoding="UTF-8"?><a><e type="boolean">true</e><e type="boolean">false</e><e type="boolean">true</e></a><?xml version="1.0" encoding="UTF-8"?><a><e type="boolean">true</e><e type="boolean">false</e><e type="boolean">true</e></a>==============Java Object Array >>> JSON Array ==================<?xml version="1.0" encoding="UTF-8"?><a><e type="number">1</e><e type="string">a</e><e type="boolean">true</e><e type="string">A</e><e class="array"><e type="string">a</e><e type="string">b</e><e type="string">c</e></e><e class="array"><e type="boolean">true</e><e type="boolean">false</e><e type="boolean">true</e></e></a><?xml version="1.0" encoding="UTF-8"?><a><e type="number">1</e><e type="string">a</e><e type="boolean">true</e><e type="string">A</e><e class="array"><e type="string">a</e><e type="string">b</e><e type="string">c</e></e><e class="array"><e type="boolean">true</e><e type="boolean">false</e><e type="boolean">true</e></e></a>==============Java String >>> JSON ==================<?xml version="1.0" encoding="UTF-8"?><a><e type="string">json</e><e type="string">is</e><e type="string">easy</e></a><?xml version="1.0" encoding="UTF-8"?><o><json type="string">is easy</json></o><?xml version="1.0" encoding="UTF-8"?><a><e type="string">json</e><e type="string">is</e><e type="string">easy</e></a>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 ==========================*//*** <b>function:</b>转换xml文档到java对象* @author hoojo* @createDate Nov 28, 2010 3:00:27 PM*/@Testpublic void readXML2Object() {XMLSerializer xmlSerializer = new XMLSerializer();fail("============== XML >>>> Java String Array ==================");String[] sa = {"a", "b", "c"};jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject(sa)));fail(jsonArray.toString());String[] s = (String[]) JSONArray.toArray(jsonArray, String.class);fail(s[0].toString());fail("============== XML >>>> Java boolean Array ==================");boolean[] bo = { true, false, true };jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject(bo)));bo = (boolean[]) JSONArray.toArray(jsonArray, boolean.class);fail(bo.toString());System.out.println(bo[0]);jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONSerializer.toJSON(bo)));bo = (boolean[]) JSONArray.toArray(jsonArray, boolean.class);fail(bo.toString());System.out.println(bo[0]);fail("==============Java Object Array >>> JSON Array ==================");Object[] o = { 1, "a", true, 'A', sa, bo };jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject(o)));System.out.println(jsonArray.getInt(0));System.out.println(jsonArray.get(1));System.out.println(jsonArray.getBoolean(2));jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONSerializer.toJSON(o)));System.out.println(jsonArray.get(4));System.out.println(jsonArray.getJSONArray(5).get(0));System.out.println(jsonArray.get(5));fail("==============Java String >>> JSON ==================");jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONArray.fromObject("['json','is','easy']")).toString());s = (String[]) JSONArray.toArray(jsonArray, String.class);fail(s[0].toString());jsonObject = (JSONObject) xmlSerializer.read(xmlSerializer.write(JSONObject.fromObject("{'json':'is easy'}")).toString());Object obj = JSONObject.toBean(jsonObject);System.out.println(obj);jsonArray = (JSONArray) xmlSerializer.read(xmlSerializer.write(JSONSerializer.toJSON("['json','is','easy']")).toString());s = (String[]) JSONArray.toArray(jsonArray, String.class);fail(s[1].toString());}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 ==================["a","b","c"]a============== XML >>>> Java boolean Array ==================[Z@15856a5true[Z@79ed7ftrue==============Java Object Array >>> JSON Array ==================1atrue["a","b","c"]true["true","false","true"]==============Java String >>> JSON ==================jsonnet.sf.ezmorph.bean.MorphDynaBean@c09554[{json=is easy}]is3、 将xml的字符串内容,转换成Java的Array对象@Testpublic void testReadXml2Array() {String str = "<a class=\"array\">" +"<e type=\"function\" params=\"i,j\">" +"return matrix[i][j];" +"</e>" +"</a>";JSONArray json = (JSONArray) new XMLSerializer().read(str);fail(json.toString());}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]; }]就是一个数组;
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