官方地址（需翻墙）：http://flexjson.sourceforge.net/
Flexjson 是一个将 Java 对象转成 JSON 的 类库，是一个深度转换的过程。
下面是我写的一个例子：http://download.csdn.net/detail/zzhd_xingfu/5885183
Main.java
package com.flexjson.main;
import java.util.ArrayList;
import java.util.List;
import com.flexjson.model.InterestModel;
import com.flexjson.model.TelModel;
import com.flexjson.model.UserModel;
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
testJsonUtil();
}
public static void testJsonUtil() {
// Json String to Java object
String json1 = "{\"ims\":[{\"name\":\"篮球\"},{\"name\":\"足球\"}],\"tm\":{\"number\":\"15896352635\",\"type\":\"手机号\"},\"passWord\":\"123\",\"userName\":\"admin\"}";
UserModel um1 = JsonUtil.getObjFromJsonStr(json1, UserModel.class);
System.out.println(um1.toString());
// ///////////////////////////////////////////////
// Java object to JSON String 简单的Object
UserModel um2 = new UserModel();
um2.setUserName("admin");
um2.setPassWord("123");
System.out.println(JsonUtil.getJsonStrFromObj(um2));
// ///////////////////////////////////////////////
// Java object to JSON String 复杂的Object
UserModel um3 = new UserModel();
um3.setUserName("admin");
um3.setPassWord("123");
List<InterestModel> ims = new ArrayList<InterestModel>();
InterestModel im1 = new InterestModel();
im1.setName("篮球");
InterestModel im2 = new InterestModel();
im2.setName("足球");
ims.add(im1);
ims.add(im2);
um3.setIms(ims);
TelModel tm = new TelModel();
tm.setNumber("15896352635");
tm.setType("手机号");
um3.setTm(tm);
String json3 = JsonUtil.getJsonStrFromObj(um3, "ims", "tm");
System.out.println(json3);
// ///////////////////////////////////////////////
// List to JSON String
UserModel um4_1 = new UserModel();
um4_1.setUserName("admin_1");
um4_1.setPassWord("123_1");
List<InterestModel> ims4_1 = new ArrayList<InterestModel>();
InterestModel im4_1_1 = new InterestModel();
im4_1_1.setName("篮球_1");
InterestModel im4_1_2 = new InterestModel();
im4_1_2.setName("足球_1");
ims4_1.add(im4_1_1);
ims4_1.add(im4_1_2);
um4_1.setIms(ims4_1);
TelModel tm4_1 = new TelModel();
tm4_1.setNumber("15896352635_1");
tm4_1.setType("手机号_1");
um4_1.setTm(tm4_1);
UserModel um4_2 = new UserModel();
um4_2.setUserName("admin_2");
um4_2.setPassWord("123_2");
List<InterestModel> ims4_2 = new ArrayList<InterestModel>();
InterestModel im4_2_1 = new InterestModel();
im4_2_1.setName("篮球_2");
InterestModel im4_2_2 = new InterestModel();
im4_2_2.setName("足球_2");
ims4_2.add(im4_2_1);
ims4_2.add(im4_2_2);
um4_2.setIms(ims4_2);
TelModel tm4_2 = new TelModel();
tm4_2.setNumber("15896352635_2");
tm4_2.setType("手机号_2");
um4_2.setTm(tm4_2);
List<Object> list = new ArrayList<Object>();
list.add(um4_1);
list.add(um4_2);
System.out.println(JsonUtil.getJsonStrFromList(list, "User", "ims", "tm"));
// ///////////////////////////////////////////////
}
}
JsonUtil.java
package com.flexjson.main;
import java.util.List;
import flexjson.JSONDeserializer;
import flexjson.JSONSerializer;
public class JsonUtil {
// Java object to JSON String
public static String getJsonStrFromObj(Object obj) {
JSONSerializer serializer = new JSONSerializer();
return serializer.serialize(obj);
}
// Java object to JSON String
public static String getJsonStrFromObj(Object obj, String... params) {
JSONSerializer serializer = new JSONSerializer();
serializer = serializer.include(params);
return serializer.serialize(obj);
}
// List to JSON String
public static String getJsonStrFromList(List<Object> objs, String rootName,
String... params) {
JSONSerializer serializer = new JSONSerializer();
serializer = serializer.include(params);
serializer.rootName(rootName);
return serializer.serialize(objs);
}
// Json String to Java object
public static <T> T getObjFromJsonStr(String source, Class<T> bean) {
return new JSONDeserializer<T>().deserialize(source, bean);
}
}
UserModel.java
/**
*
*/
package com.flexjson.model;
import java.util.List;
/**
* @author Administrator
*
*/
public class UserModel {
private String userName;// 用户名
private String passWord;// 密码
private List<InterestModel> ims;
private TelModel tm;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
public List<InterestModel> getIms() {
return ims;
}
public void setIms(List<InterestModel> ims) {
this.ims = ims;
}
public TelModel getTm() {
return tm;
}
public void setTm(TelModel tm) {
this.tm = tm;
}
@Override
public String toString() {
return "userName=" + userName + "; passWord=" + passWord + ";";
}
}
InterestModel.java
package com.flexjson.model;
public class InterestModel {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
TelModel.java
package com.flexjson.model;
public class TelModel {
private String number;
private String type;
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
}