JSON net.sf.jason使用

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1.JAR包简介
要使程序可以运行必须引入JSON-lib包，JSON-lib包同时依赖于以下的JAR包：

commons-lang.jar
commons-beanutils.jar
commons-collections.jar
commons-logging.jar
ezmorph.jar

json-lib-2.2.2-jdk15.jar

下载地址：http://download.csdn.net/download/luming_xml/9521971

简单测试：

测试案例1

package lu.test;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class Test {   public static void main(String[]args){   //创建JSONObject   JSONObject jsonObject=new JSONObject();   jsonObject.put("username", "hjm");   jsonObject.put("password", "123");   System.out.println(jsonObject);   //增加属性   jsonObject.element("sex", "男");   System.out.println(jsonObject);     //根据key返回   System.out.println(jsonObject.get("sex"));      //判断输出对象的类型   boolean isArray=jsonObject.isArray();   boolean isEmpty=jsonObject.isEmpty();   boolean isNullObject=jsonObject.isNullObject();   System.out.println("是否数组： "+isArray+" 是否空："+isEmpty+" 是否空对象："+isNullObject);      //将JSONArray增加到JSONObject中   JSONArray jsonArray=new JSONArray();   jsonArray.add(0,"hjm");   jsonArray.add(1,"cag");   //开始增加   jsonObject.element("student", jsonArray);   System.out.println(jsonObject);   }}

<strong>测试案例2</strong>

package lu.test;import junit.framework.TestCase;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class JSONTest extends TestCase{      public void testJson(){      JSONObject jsonObj0  = new JSONObject();          JSONObject jsonObj  = new JSONObject();          JSONObject jsonObj2  = new JSONObject();          JSONObject jsonObj3  = new JSONObject();          JSONArray jsonArray = new JSONArray();                    //创建jsonObj0          jsonObj0.put("name0", "zhangsan");          jsonObj0.put("sex1", "female");          System.out.println("jsonObj0:"+jsonObj0);                    //创建jsonObj1          jsonObj.put("name", "xuwei");          jsonObj.put("sex", "male");          System.out.println("jsonObj:"+jsonObj);                //创建jsonObj2，包含两个条目，条目内容分别为jsonObj0，jsonObj1          jsonObj2.put("item0", jsonObj0);          jsonObj2.put("item1", jsonObj);          System.out.println("jsonObj2:"+jsonObj2);                    //创建jsonObj3，只有一个条目，内容为jsonObj2          jsonObj3.element("j3", jsonObj2);          System.out.println("jsonObj3:"+jsonObj3);                //往JSONArray中添加JSONObject对象。发现JSONArray跟JSONObject的区别就是JSONArray比JSONObject多中括号[]          jsonArray.add(jsonObj);          System.out.println("jsonArray:"+jsonArray);                    JSONObject jsonObj4  = new JSONObject();          jsonObj4.element("weather", jsonArray);          System.out.println("jsonObj4:"+jsonObj4);      }  }

测试案例3

package lu.test;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class Address {   public String getRoad() {return road;}public void setRoad(String road) {this.road = road;}public String getStreate() {return streate;}public void setStreate(String streate) {this.streate = streate;}public String getProvience() {return provience;}public void setProvience(String provience) {this.provience = provience;}public String getNo() {return no;}public void setNo(String no) {this.no = no;}   private String road;   private String streate;   private String provience;   private String no;   public static void main(String[]args){   //将json对象转换为Java对象   JSONObject jsonObject = JSONObject.fromObject("{\"no\":\"104\",\"provience\":\"陕西\",\"road\":\"高新路\",\"streate\":\"\"}");   Address Address  = (Address) JSONObject.toBean(jsonObject,Address.class);   System.out.println(Address.getNo());   System.out.println(Address.getStreate());   System.out.println(Address.getProvience());   System.out.println(Address.getRoad());   //将Java对象转换成json对象；    Address address = new Address();    address.setNo("104");    address.setProvience("陕西");    address.setRoad("高新路");    address.setStreate("");    JSONArray json = JSONArray.fromObject(address);    JSONObject jb=JSONObject.fromObject(address);    System.out.println(json.toString());    System.out.println(jb);    //将JSONArray转化为list       JSONArray jsonArray = new JSONArray();    jsonArray.add("{\"no\":\"104\",\"provience\":\"陕西\",\"road\":\"高新路\",\"streate\":\"\"}");    jsonArray.add("{\"no\":\"104\",\"provience\":\"陕西\",\"road\":\"高新路\",\"streate\":\"123\"}");    Object object = JSONArray.toList(jsonArray,Address.class);   }}

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