Java如何获取Json中的数据实例代码

String jsonString = "{'name':'卢本伟','age':24}";
JSONObject json = JSON.parseObject(jsonString);
String name = json.getString("name");
int age = json.getIntValue("age");
System.out.println(name);
System.out.println(age);

String jsonString = "{'Hero':{'name':'Fizz','position':'Mid','charactor':'killer'}}";
JSONObject jsonObject = JSON.parseObject(jsonString);
JSONObject Hero = jsonObject.getJSONObject("Hero");
String name = Hero.getString("name");
String position = Hero.getString("position");
String charactor = Hero.getString("charactor");
System.out.println(name + "..." + position + "..." + charactor);

String jsonString = "{'nickNames':['五五开','芦苇','white']}";
JSONObject jsonObject = JSON.parseObject(jsonString);
JSONArray nickNames = jsonObject.getJSONArray("nickNames");
for(Object nickName:nickNames){
    System.out.println(nickName);
}

String jsonString = "{'Honors':[{'year':2011,'name':'TGA总决赛冠军'},{'year':2013,'name':'S3全球总决赛中国区冠军'},{'year':2013,'name':'S3全球总决赛亚军'}]}";
JSONObject jsonObject = JSON.parseObject(jsonString);
JSONArray honors = jsonObject.getJSONArray("Honors");
for(int i=0; i<honors.size(); i++){
    JSONObject honor = (JSONObject) honors.get(i);
    int year = honor.getIntValue("year");
    String name = honor.getString("name");
    System.out.println(year + "..." + name);
}

import com.alibaba.fastjson.JSONObject;
public class JsonTest {
	public static void main(String[] args) {
		// json串(以自己的为准)
		String str = "{"id":"75","shoppingCartItemList":[{"id":"407","num":"10"}]}";
		JSONObject jsonObject = JSONObject.parseObject(str);
		// 获取到key为shoppingCartItemList的值
		String r = jsonObject.getString("shoppingCartItemList");
		System.out.println(r);
	}
}

package com.cmbc.cms.action.addrebatchno; 
import java.util.List; 
import com.alibaba.fastjson.JSONObject; 
public class Test { 
public int getId() { 
return id; 
} 
public void setId(int id) { 
this.id = id; 
} 
public int getNum() { 
return num; 
} 
public void setNum(int num) { 
this.num = num; 
} 
private int id; 
private int num; 
public static void main(String[] args) { 
// TODO Auto-generated method stub 
String str = "{\"id\":\"75\",\"shoppingCartItemList\":[{\"id\":\"407\",\"num\":\"10\"}]}"; 
JSONObject jsonObject = JSONObject.parseObject(str); 
// 获取到key为shoppingCartItemList的值 
String r = jsonObject.getString("shoppingCartItemList"); 
System.out.println(r); 
//取外面的id 
String id = jsonObject.getString("id"); 
System.out.println(id); 
//取里面的id 
List<Test> list = JSONObject.parseArray(r,Test.class); 
int id2 = list.get(0).getId(); 
System.out.println(id2); 
} 
}