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
@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
@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
@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
@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
@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
@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
@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);
}
}2. Post 请求
2.1 以方法的形参接收参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(String name,String phone) {
log.info("name:{}",name);
log.info("phone:{}",phone);
return Result.success(null);
}
}
注：和 Get 请求一样，如果方法形参用 RequestParam 注解标注，表示这个参数需要必传。
2.2 通过 param 提交参数，以实体类接收参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(User user) {
log.info("name:{}",user.getName());
log.info("phone:{}",user.getPhone());
return Result.success(null);
}
}
注：Post 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。
2.3 通过 HttpServletRequest 接收参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(HttpServletRequest httpServletRequest) {
log.info("name:{}",httpServletRequest.getParameter("name"));
log.info("phone:{}",httpServletRequest.getParameter("phone"));
return Result.success(null);
}
}2.4 通过 @PathVariable 注解进行接收
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save/{name}")
public Result<User> getUserDetail(@PathVariable String name) {
log.info("name:{}",name);
return Result.success(null);
}
}
2.5 请求体以 form-data 提交参数，以实体类接收参数
form-data 是表单提交的一种方式，比如常见的登录请求。
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(User user) {
log.info("name:{}",user.getName());
log.info("phone:{}",user.getPhone());
return Result.success(null);
}
}
2.6 请求体以 x-www-form-urlencoded 提交参数，以实体类接收参数
x-www-form-urlencoded 也是表单提交的一种方式，只不过提交的参数被进行了编码，并且转换成了键值对。
例如你用form-data 提交的参数：
makefile
name: 知否君
age: 22用 x-www-form-urlencoded 提交的参数：
perl
name=%E5%BC%A0%E4%B8%89&age=22
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(User user) {
log.info("name:{}",user.getName());
log.info("phone:{}",user.getPhone());
return Result.success(null);
}
}
2.7 通过 @RequestBody 注解接收参数
注：RequestBody 注解主要用来接收前端传过来的 body 中 json 格式的参数。
2.7.1 接收实体类参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(@RequestBody User user) {
log.info("name:{}",user.getName());
log.info("phone:{}",user.getPhone());
return Result.success(null);
}
}
2.7.2 接收数组和集合
接收数组
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(@RequestBody String[] names) {
Arrays.asList(names).forEach(name->{
System.out.println(name);
});
return Result.success(null);
}
}接收集合
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(@RequestBody List<String> names) {
names.forEach(name->{
System.out.println(name);
});
return Result.success(null);
}
}
2.8 通过 Map 接收参数
1.以 param 方式传参， RequestParam 注解接收参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(@RequestParam Map<String,Object> map) {
System.out.println(map);
System.out.println(map.get("name"));
return Result.success(null);
}
}
2.以 body json 格式传参，RequestBody 注解接收参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(@RequestBody Map<String,Object> map) {
System.out.println(map);
System.out.println(map.get("name"));
return Result.success(null);
}
}
2.9 RequestBody 接收一个参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@PostMapping("/save")
public Result<User> getUserDetail(@RequestBody String name) {
System.out.println(name);
return Result.success(null);
}
}
3. Delete 请求
3.1 以 param 方式传参，以方法形参接收参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@DeleteMapping("/delete")
public Result<User> getUserDetail(@RequestParam String name) {
System.out.println(name);
return Result.success(null);
}
}
3.2 以 body json 方式传参，以实体类接收参数
注：需要用 RequestBody 注解，否则接收的参数为 null
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@DeleteMapping("/delete")
public Result<User> getUserDetail(@RequestBody User user) {
System.out.println(user);
return Result.success(null);
}
}
3.3 以 body json 方式传参，以 map 接收参数
注：需要用 RequestBody 注解，否则接收的参数为 null
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@DeleteMapping("/delete")
public Result<User> getUserDetail(@RequestBody Map<String,Object> map) {
System.out.println(map);
return Result.success(null);
}
}
3.4 PathVariable 接收参数
java
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
@DeleteMapping("/delete/{name}")
public Result<User> getUserDetail(@PathVariable String name) {
System.out.println(name);
return Result.success(null);
}
}
