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例1:将map对象添加一次元素(包括字符串对、数组),转换成json对象一次。
package com.json;
//这是使用org.json的程序:
import java.util.HashMap;
import java.util.Map;
import org.json.JSONException;
import org.json.JSONObject;
public class jsontest {
public static void main(String[] args) throws JSONException {
String json = "{'name':'reiz'}";
JSONObject jsonObj = new JSONObject(json);
String name = jsonObj.getString("name");
System.out.println(jsonObj);
jsonObj.put("initial", name.substring(0, 1).toUpperCase());
String[] likes = new String[] { "JavaScript", "Skiing", "Apple Pie" };
jsonObj.put("likes", likes);
System.out.println(jsonObj);
Map <String, String> ingredients = new HashMap <String, String>();
ingredients.put("apples", "3kg");
ingredients.put("sugar", "1kg");
ingredients.put("pastry", "2.4kg");
ingredients.put("bestEaten", "outdoors");
jsonObj.put("ingredients", ingredients);
System.out.println(jsonObj);
}
}
运行结果:
{"name":"reiz"}
{"initial":"R","likes":["JavaScript","Skiing","Apple Pie"],"name":"reiz"}
{"ingredients":{"apples":"3kg","pastry":"2.4kg","bestEaten":"outdoors","sugar":"1kg"},"initial":"R","likes":["JavaScript","Skiing","Apple Pie"],"name":"reiz"}
其次,例2:list转换成json的三种参数形式。例3:json转换成list和map。等问题
可以转到该博客进行观看 https://www.cnblogs.com/zhujiabin/p/5498555.html