后端

1.JSONObject

1.字符串转为json对象

String jsonStr = "{\"school\":\"商职\",\"sex\":\"男\",\"name\":\"wjw\",\"age\":22}";
JSONObject jsonObject = JSONObject.parseObject(jsonStr);
System.out.println(jsonObject.getString("name"));

2.实体类 转 JSONObject对象

Person person = new Person();
person.setName("ly");
person.setAge(22);
person.setSex("男");
String personStr = JSONObject.toJSONString(person);  // 转换为json字符串
System.out.println("personStr:"+personStr);
JSONObject personObject = JSONObject.parseObject(personStr);  // 转换为json对象
System.out.println("personObject :"+personObject );

前端

js

1.json转为字符串

var student = new Object(); 
student.name = "Lanny"; 
student.age = "25"; 
student.location = "China"; 
var json = JSON.stringify(student); 

2.字符串转为对象

JSON.parse(jsonstr); 

批量删除

deleteFileOrDirectory() {
        var ids= this.sels.map(item => item.id).join()//获取所有选中行的id组成的字符串，以逗号分隔
        console.log(ids)
        this.$confirm('此操作将永久删除该文件及其子文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {      
            console.log("删除成功")
          })
        })
      }

后台解析

public HttpResult delete(@RequestParam String ids) {
	String[] ids= ids.split(",");
	system.out.println(ids)
}