3.spring boot Controller獲取請求參數的值

1.獲取鏈接中的參數,使用倒的關鍵詞@PathVariable

@RestController
public class HelloController {

    @RequestMapping(value = "/hello/{id}",method = RequestMethod.GET)
    public String index(@PathVariable("id") Integer id){
        return "id="+id;
    }

}

啓動項目訪問，成功獲取到id

也能夠把id放在/hello前面

public class HelloController {

    @RequestMapping(value = "/{id}/hello",method = RequestMethod.GET)
    public String index(@PathVariable("id") Integer id){
        return "id="+id;
    }

}

 

2.傳統的問號(?id=110)傳值，設置id能夠不傳默認值爲0，使用倒的關鍵詞@RequestParam

public class HelloController {

    @RequestMapping(value = "/hello",method = RequestMethod.GET)
    public String index(@RequestParam(value = "id" ,required = false, defaultValue = "0") Integer id){
        return "id="+id;
    }

}

不傳參數默認爲0

傳參數爲獲取到的參數