Java中对JSON数据处理、JSONObject、JSONArray的使用_java jsonarray的第二个参数

1.引入pom包

<!-- 阿里JSON解析器 -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.31</version>
    </dependency>

2.对象之间转化

//Java转成JSON对象
        JSONObject jsonObject = (JSONObject) JSONObject.toJSON(dept);
//JSON字符串转换成Java对象
        Student student1 = JSONObject.parseObject(jsonStr, Dept.class);

3.demo例子

public class Demo {
 
    public static void main(String[] args) {
//        Dept dept1 = new Dept("1340327733561737701","1340327733561737701","单位名称1","1","1","单位1");
//        Dept dept2 = new Dept("1340327733561737702","1340327733561737702","单位名称2","2","2","单位2");
        Map<String,Object> map1 = new HashMap<String,Object>(){<