解析json工具类
2015-02-06 10:38
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package parsejson;
import java.util.List;
import java.util.Map;
import vo.User;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
public class ParserJSONByGson {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String str = getGSONFromObject(UserData.getsingle());
System.out.println(str);
System.out.println(getObjectFromGSON(str,User.class));
//List<User>
String str1 = getGSONFromObject(UserData.getlist());
System.out.println(str1);
System.out.println(getListFromGSON(str1,User.class));
//
String str2 = getGSONFromObject(UserData.getlistString());
System.out.println(str2);
System.out.println(getListFromGSON(str2,String.class));
//
String str3 = getGSONFromObject(UserData.getListMap());
System.out.println(str3);
System.out.println(getListMapFromGSON(str3,Object.class));
}
public static String getGSONFromObject(Object obj){
Gson gson = new Gson();
return gson.toJson(obj);
}
//User.class -->User
public static <T> T getObjectFromGSON(String jsonStr,Class<T> cls){
Gson gson = new Gson();
T t = gson.fromJson(jsonStr,cls);
return t;
}
//List<User> User List<User>
public static <T>List<T> getListFromGSON(String jsonStr,Class<T> cls){
Gson gson = new Gson();
List<T> list = gson.fromJson(jsonStr,new TypeToken<List<T>>(){}.getType());
return list;
}
public static <T>List<Map<String,T>> getListMapFromGSON(String jsonStr,Class<T> cls){
Gson gson = new Gson();
List<Map<String,T>> list = gson.fromJson(jsonStr,new TypeToken<List<Map<String,T>>>(){}.getType());
return list;
}
}
package parsejson;
import java.util.List;
import java.util.Map;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
public class ParserJSONByFastJSON {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
}
public static String getJSONFromObject(Object obj){
return JSON.toJSONString(obj);
}
public static <T> T getObjectFromJSON(String jsonStr,Class<T> cls){
return JSON.parseObject(jsonStr,cls);
}
public static <T>List<T> getListFromJSON(String jsonStr,Class<T> cls){
return JSON.parseArray(jsonStr,cls);
}
public static <T>List<Map<String,T>> getListMapFromJSON(String jsonStr,Class<T> cls){
return JSON.parseObject(jsonStr,new TypeReference<List<Map<String,T>>>(){}.getType());
}
}
import java.util.List;
import java.util.Map;
import vo.User;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
public class ParserJSONByGson {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String str = getGSONFromObject(UserData.getsingle());
System.out.println(str);
System.out.println(getObjectFromGSON(str,User.class));
//List<User>
String str1 = getGSONFromObject(UserData.getlist());
System.out.println(str1);
System.out.println(getListFromGSON(str1,User.class));
//
String str2 = getGSONFromObject(UserData.getlistString());
System.out.println(str2);
System.out.println(getListFromGSON(str2,String.class));
//
String str3 = getGSONFromObject(UserData.getListMap());
System.out.println(str3);
System.out.println(getListMapFromGSON(str3,Object.class));
}
public static String getGSONFromObject(Object obj){
Gson gson = new Gson();
return gson.toJson(obj);
}
//User.class -->User
public static <T> T getObjectFromGSON(String jsonStr,Class<T> cls){
Gson gson = new Gson();
T t = gson.fromJson(jsonStr,cls);
return t;
}
//List<User> User List<User>
public static <T>List<T> getListFromGSON(String jsonStr,Class<T> cls){
Gson gson = new Gson();
List<T> list = gson.fromJson(jsonStr,new TypeToken<List<T>>(){}.getType());
return list;
}
public static <T>List<Map<String,T>> getListMapFromGSON(String jsonStr,Class<T> cls){
Gson gson = new Gson();
List<Map<String,T>> list = gson.fromJson(jsonStr,new TypeToken<List<Map<String,T>>>(){}.getType());
return list;
}
}
package parsejson;
import java.util.List;
import java.util.Map;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
public class ParserJSONByFastJSON {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
}
public static String getJSONFromObject(Object obj){
return JSON.toJSONString(obj);
}
public static <T> T getObjectFromJSON(String jsonStr,Class<T> cls){
return JSON.parseObject(jsonStr,cls);
}
public static <T>List<T> getListFromJSON(String jsonStr,Class<T> cls){
return JSON.parseArray(jsonStr,cls);
}
public static <T>List<Map<String,T>> getListMapFromJSON(String jsonStr,Class<T> cls){
return JSON.parseObject(jsonStr,new TypeReference<List<Map<String,T>>>(){}.getType());
}
}
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