@RestController  
public class MyController {  
  
    @GetMapping("/greeting")  
    public String greeting() {  
        return "Hello, World!";  
    }  
  
    // 或者使用@RequestMapping  
    @RequestMapping(value = "/hello", method = RequestMethod.GET)  
    public String hello() {  
        return "Hi there!";  
    }  
}

@RestController  
public class MyController {  
  
    @GetMapping("/greet")  
    public String greet(@RequestParam(value = "name", required = false, defaultValue = "World") String name) {  
        return "Hello, " + name + "!";  
    }  
}

@RestController  
public class MyController {  
  
    @GetMapping("/user/{id}")  
    public String getUserById(@PathVariable("id") Long userId) {  
        // 假設(shè)這里有一個(gè)根據(jù)userId獲取用戶信息的邏輯  
        return "User ID: " + userId;  
    }  
}

@RestController
public class MyController {
    @GetMapping("/search")
    public String search(
            @ModelAttribute MySearchParams searchParams) {
        return "Searching for: " + searchParams.getQuery();
    }
 
    // 假設(shè)MySearchParams類如下
    static class MySearchParams {
        private String query;
        // 省略getter和setter方法
    }
}

@RestController  
public class MyController {  
  
    // 使用@PostMapping  
    @PostMapping("/submit")  
    public ResponseEntity<String> submitData(@RequestBody String data) {  
        // 處理數(shù)據(jù)...  
        return ResponseEntity.ok("Data received: " + data);  
    }  
  
    // 或者使用@RequestMapping  
    @RequestMapping(value = "/postData", method = RequestMethod.POST)  
    public ResponseEntity<String> postData(@RequestBody String data) {  
        // 處理數(shù)據(jù)...  
        return ResponseEntity.ok("Data posted: " + data);  
    }  
}

@RestController  
public class MyRestController {  
  
    @PostMapping("/submitForm")  
    public String submitForm(@RequestParam("username") String username,  
                             @RequestParam("password") String password) {  
        return "Received username: " + username + ", password: " + password;  
    }  
}

@RestController  
public class MyJsonRestController {  
  
    @PostMapping("/submitJson")  
    public String submitJson(@RequestBody MyFormObject formObject) {  
        return "Received user: " + formObject.getUsername() + ", password: " + formObject.getPassword();  
    }  
  
    // 假設(shè)你有一個(gè)MyFormObject類來(lái)接收J(rèn)SON數(shù)據(jù)  
    static class MyFormObject {  
        private String username;  
        private String password;
        // 省略getter和setter方法
    }  
}

@PostMapping(value = "/uploadFile", name = "上傳文件")
public String uploadImage(MultipartFile file) {
    //獲取文件原名
    String fileName = file.getOriginalFilename();
    //設(shè)置上傳路徑
    //判斷上傳路徑是否存在，不存在則創(chuàng)建目錄
    File fileDir = new File(realPath);
    if (!fileDir.exists()) {
        fileDir.mkdirs();
    }
    String strYmd= LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
    File fileYmdDir = new File(realPath + "/" + strYmd);
    if (!fileYmdDir.exists()) {
        fileYmdDir.mkdirs();
    }
    fileName = getFileName(fileName);
    String outputPath = "";
    //上傳文件
    try {
        outputPath = realPath +"/"+strYmd+ "/" + fileName;
        InputStream input = file.getInputStream();
        FileOutputStream fos = new FileOutputStream(outputPath);
        IOUtils.copy(input, fos);
    } catch (Exception e) {
        System.out.println(e.getMessage());
        return null;
    }
    System.out.println("uploadFile:"+outputPath);
    return outputPath;
}

@ResponseBody
@GetMapping("/RequestHeader")
public Map test(@RequestHeader("host") String host){
    Map map = new HashMap();
    map.put("header", host);
    return map;
}

@ResponseBody
@GetMapping("/RequestHeader")
public Map test(@RequestHeader Map<String, String> headers){
    Map map = new HashMap();
    map.put("headers", headers);
    return map;
}