Spring Boot接收参数19种不同的方式总结

@GetMapping("/greet")
public String greet(@RequestParam String name) {
    return "Hello, " + name;
}

@GetMapping("/user/{id}")
public String getUser(@PathVariable String id) {
    return "User ID: " + id;
}

@PostMapping("/user")
public String createUser(@RequestBody User user) {
    return "Created user: " + user.getName();
}

@PostMapping("/submit")
public String submitForm(@ModelAttribute FormData formData) {
    return "Submitted: " + formData.getField();
}

@PostMapping("/upload")
public String handleFileUpload(@RequestParam MultipartFile file) {
    return "Uploaded file: " + file.getOriginalFilename();
}

@GetMapping("/welcome")
public String welcome(@CookieValue(value = "username", defaultValue = "Guest") String username) {
    return "Welcome, " + username;
}

@GetMapping("/header")
public String getHeader(@RequestHeader("User-Agent") String userAgent) {
    return "User-Agent: " + userAgent;
}

@GetMapping("/greet")
public String greet(@RequestParam(defaultValue = "Guest") String name) {
    return "Hello, " + name;
}

@GetMapping("/add")
public int add(@RequestParam int a, @RequestParam int b) {
    return a + b;
}

@GetMapping("/items")
public String getItems(@RequestParam List<String> ids) {
    return "Items: " + String.join(", ", ids);
}

@GetMapping("/params")
public String getParams(@RequestParam Map<String, String> params) {
    return "Parameters: " + params.toString();
}

@GetMapping("/user-info")
public String getUserInfo(Authentication authentication) {
    return "Logged in user: " + authentication.getName();
}

@PostMapping("/form")
public String handleForm(@RequestBody FormData formData) {
    return "Received: " + formData.getField();
}

@GetMapping("/request")
public String getRequest(HttpServletRequest request) {
    String param = request.getParameter("paramName");
    return "Parameter: " + param;
}

@PostMapping("/validate")
public String validateUser(@Valid @RequestBody User user) {
    return "Valid user: " + user.getName();
}

public interface UserRequest {
    String getName();
}

@PostMapping("/user")
public String createUser(@RequestBody UserRequest userRequest) {
    return "Created user: " + userRequest.getName();
}

@GetMapping("/users")
public List<User> findUsers(@RequestParam String name) {
    return userRepository.findByName(name);
}