@RequestBody

取得request body參數

用法: 只能加在方法的參數上

用途: 取得request body裡面的參數(將 json 轉為 java object)

POST

{”id”: 36,”name”:”ts”}

@RestController
public class MyController4 {
    @RequestMapping("/test")
    public String test(@RequestBody Student student) {
        return "hello world";
    }
}

練習

創建student的class setter ,getter

public class Student {
    Integer id;
    String name;

    public Integer getId() { return id; }
    public void setId(Integer id) { this.id = id; }

    public String getName() { return name; }
    public void setName(String name) { this.name = name; }
}

@RestController
public class MyController4 {
    @RequestMapping("/test")
    public String test(@RequestBody Student student) {
        System.out.println("student id: "   + student.getId());
        System.out.println("student name: " + student.getName());
        return "hello world";
    }
}

Talend API Tester

POST http://localhost:8080/test

request body

{
    "id": 36,
    "name": "ts"
}

conolse:

student id: 36
student name: ts

Talend API Tester 測試2

POST http://localhost:8080/test

request body

{
    "id": 36
}

200 成功

conolse:

student id: 36
student name: null

多出來的參數會忽略 ,少帶的參數會給null