SpringBoot接收参数的方式

科技新语

发布于 2024-05-23 14:44:27

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发布于 2024-05-23 14:44:27

1. Get 请求

1.1 以方法的形参接收参数

1.这种方式一般适用参数比较少的情况

java复制代码@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @GetMapping("/detail")
    public Result<User> getUserDetail(String name,String phone) {
        log.info("name:{}",name);
        log.info("phone:{}",phone);
       return  Result.success(null);
    }
}

2.参数用 @RequestParam 标注，表示这个参数需要必传，否则会报错。

java复制代码@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @GetMapping("/detail")
    public Result<User> getUserDetail(@RequestParam String name,@RequestParam String phone) {
        log.info("name:{}",name);
        log.info("phone:{}",phone);
       return  Result.success(null);
    }
}

1.2 以实体类接收参数

java复制代码@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @GetMapping("/detail")
    public Result<User> getUserDetail(User user) {
        log.info("name:{}",user.getName());
        log.info("phone:{}",user.getPhone());
       return  Result.success(null);
    }
}

注：Get 请求以实体类接收参数时，不能用 RequestParam 注解进行标注，因为不支持这样的方式获取参数。

1.3 通过 HttpServletRequest 接收参数

java复制代码@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
    @GetMapping("/detail")
    public Result<User> getUserDetail(HttpServletRequest request) {
        String name = request.getParameter("name");
        String phone = request.getParameter("phone");
        log.info("name:{}",name);
        log.info("phone:{}",phone);
       return  Result.success(null);
    }
}

1.4 通过 @PathVariable 注解接收参数

java复制代码@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @GetMapping("/detail/{name}/{phone}")
    public Result<User> getUserDetail(@PathVariable String name,@PathVariable String phone) {
        log.info("name:{}",name);
        log.info("phone:{}",phone);
       return  Result.success(null);
    }
}

1.5 接收数组参数

java复制代码@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @GetMapping("/detail")
    public Result<User> getUserDetail(String[] names) {
        Arrays.asList(names).forEach(name->{
            System.out.println(name);
        });
       return  Result.success(null);
    }
}

1.6 接收集合参数

springboot 接收集合参数，需要用 RequestParam 注解绑定参数，否则会报错！！

java复制代码@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @GetMapping("/detail")
    public Result<User> getUserDetail(@RequestParam List<String> names) {
        names.forEach(name->{
            System.out.println(name);
        });
       return  Result.success(null);
    }
}