JavaSpringBoot Controller 层的几种方法

@RestController
public class HelloWorld {

    //第三步，给方法起一个请求路径名字
    @RequestMapping("/aaa")
   public String hello(String username,String password){
        System.out.println("判断密码账号是否正确"+username+password);
        return"登陆成功";
   }
   //实体类接受
   @RequestMapping(value = "/bodyParam",method = RequestMethod.GET)
    public String bodyParam(User user){
       System.out.println(user.getName());
       System.out.println(user.getAge());
       return "ok";

   }
    //数组参数接受：数组名称  和 前端请求参数名一致
    @RequestMapping(value = "/arrayParam",method = RequestMethod.GET)
    public String arrayParam(String[] hobby) {
        for (int i = 0; i < hobby.length; i++) {
            System.out.println(hobby[i]);
        }
        return "ok";
    }
    //接受集合参数:1.集合名称 和 前端请求参数名称一致   2.在集合中参数前面添加注解@RequestParam
    @RequestMapping(value = "/listParam",method = RequestMethod.GET)
    public String listParam(@RequestParam ArrayList<String> hobby) {
        System.out.println(hobby);
        return "ok";
    }
    //日期参数：1.LocalDateTime 类型参数名 和前端请求参数名一致，2.在结合参数前面添加注解@DateTimeFormat
    @RequestMapping(value = "/timeParam",method = RequestMethod.GET)
    public String listParam(@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") LocalDateTime time) {
        System.out.println(time);
        return "ok";
    }

    //JSON格式 1.定义实体类，属性名和json键名称一致   2.给实体类参数浅见添加注解@RequestBody
    @RequestMapping(value = "/jsonParam",method = RequestMethod.GET)
    public String jsonParam(@RequestBody Teacher t) {
        System.out.println(t.getName());
        System.out.println(t.getAge());
        System.out.println(t.getAddress().getProvince());
        System.out.println(t.getAddress().getCity());
        return "ok";
    }
    //路径参数：1.请求路径名的后面拼接/{起名字接受路径参数数据}  2.定义形参变量，变量名称和路径名必须一致  3.使用注解@PathVariable
    @RequestMapping(value = "/pathParam/{id}",method = RequestMethod.GET)
    public String pathParam(@PathVariable Integer id) {
        System.out.println(id);
        return "ok";
    }
}