import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
@RestController
public class FileUploadController {
    @PostMapping("/upload")
    public String handleFileUpload(
            @RequestPart("file") MultipartFile file,
            @RequestPart("metadata") Metadata metadata) {
        try {
            // 處理文件，例如保存到服務(wù)器
            file.transferTo(new File("/path/to/destination/" + file.getOriginalFilename()));
            // 還可以處理元數(shù)據(jù)
            System.out.println("Image description: " + metadata.getDescription());
            return "File uploaded successfully: " + file.getOriginalFilename();
        } catch (Exception e) {
            return "Error during file upload: " + e.getMessage();
        }
    }
    static class Metadata {
        private String description;
        public String getDescription() {
            return description;
        }
        public void setDescription(String description) {
            this.description = description;
        }
    }
}

<form method="POST" action="/upload" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="hidden" name="metadata" value='{"description":"A sample image"}'>
    <button type="submit">Upload</button>
</form>

import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class CookieController {
    @GetMapping("/get-cookie")
    public String readCookie(@CookieValue(name = "sessionId", defaultValue = "No Session") String sessionId) {
        return "Session ID: " + sessionId;
    }
}

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class CookieController {
    @GetMapping("/set-cookie")
    public String setCookie(HttpServletResponse response) {
        Cookie cookie = new Cookie("sessionId", "123456789");
        cookie.setMaxAge(7 * 24 * 60 * 60); // 設(shè)置 Cookie 有效期為一周
        cookie.setHttpOnly(true); // 增強(qiáng)安全性，防止客戶端腳本訪問
        cookie.setPath("/"); // 設(shè)置 Cookie 適用的路徑
        response.addCookie(cookie);
        return "Cookie set";
    }
}

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HeaderController {
    @GetMapping("/get-headers")
    public String getHeaders(
            @RequestHeader("User-Agent") String userAgent,
            @RequestHeader("Accept-Language") String language) {
        return "User-Agent: " + userAgent + "\nAccept-Language: " + language;
    }
}

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HeaderController {
    @GetMapping("/optional-header")
    public String getOptionalHeader(@RequestHeader(value = "X-Optional-Header", required = false) String optionalHeader) {
        return optionalHeader != null ? "Optional Header: " + optionalHeader : "No Optional Header Provided";
    }
}