接收参数有三个方法。

1、接收id的方法:

@RestController
public class ControllerTest {


    //在这里读取配置文件
    @Autowired
    private Testconfig testconfig;
    //访问路径:http://localhost:8080/hello/5
    @GetMapping(value = "/hello/{id}")
    public String hello(@PathVariable("id") Integer id){
        return "ID:" + id;
    }
}

2、接收参数:

@RestController
public class ControllerTest {


    //在这里读取配置文件
    @Autowired
    private Testconfig testconfig;
    //访问路径:http://localhost:8080/hello?id=1551
    @GetMapping(value = "/hello")
    public String hello(@RequestParam("id") Integer id){
        return "ID:" + id;
    }
}

也可以这样设置,当不传输参数的时候,默认为5:

    //访问路径:http://localhost:8080/hello?id=1551
    @GetMapping(value = "/hello")
    public String hello(@RequestParam(value = "id", required = false, defaultValue = "5") Integer id){
        return "ID:" + id;
    }

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