java json字符串转换Map

Posted 2023-03-09

有这么一个字符串："D":["a","b"],"A":["a","b"],"B":["a","b"],"C":["a","b"]
json转换为map

用JSONUtil.deserialize()就可以了，范例：
import org.apache.struts2.json.JSONUtil;

public class JsonToJava
public static void main(String[] args)
try
String s = "\"D\":[\"a\",\"b\"],\"A\":[\"a\",\"b\"],\"B\":[\"a\",\"b\"],\"C\":[\"a\",\"b\"]";
Object o = JSONUtil.deserialize(s);
System.out.println(o.getClass() + ": " + o);

catch (Exception e)
e.printStackTrace(System.out);


参考技术A import org.apache.struts2.json.JSONUtil;

public class JsonToJava

public static void main(String[] args)
try
String s = ""D":["a","b"],"A":["a","b"],"B":["a","b"],"C":["a","b"]";

Object o = JSONUtil.deserialize(s); //转化

System.out.println(o.getClass() + ": " + o); //输出转化结果
Object o1 = ((HashMap)o).get("A");
System.out.println("A = " + o1.getClass() + ": " + o1); // 输出转化后的HashMap中“A”属性

catch (Exception e)
e.printStackTrace(System.out);




输出结果：
class java.util.HashMap: D=[a, b], A=[a, b], B=[a, b], C=[a, b]
A = class java.util.ArrayList: [a, b] 参考技术B 将JSON字符串转换为 HashMap Map