Spring Data Rest：如何使用请求正文发送多部分文件

Posted 2023-02-26

【中文标题】Spring Data Rest：如何使用请求正文发送多部分文件

【英文标题】：Spring Data Rest : how to send Multi-part file with request Body

【发布时间】：2017-11-24 02:11:31

【问题描述】：

我想构建一个用户注册 API，其中我需要用户基本信息和他/她的个人资料图片，所以我很困惑如何实现这一点！我已经制作了一个控制器并请求了一个主体但是当我访问这个 API 时，它给了我"Unsupported Media Type" 的错误，当我将内容类型设置为multipart/form-data 时，它给出了一个错误： the request was rejected because no multipart boundary was found

请帮助我如何在同一个请求中同时发送用户信息和用户照片

更新：控制器

@RequestMapping(method = RequestMethod.POST, value = "createRider")
public @ResponseBody ResponseEntity<?> createRider(
        @RequestBody CreateRider createRider,Authentication authentication,
        PersistentEntityResourceAssembler assembler,@RequestPart(value = "profilePic", required = false) MultipartFile file) 

    if (authentication != null && authentication.getPrincipal() != null) 
        Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();
        boolean authorized = authorities.contains(new SimpleGrantedAuthority("rights"));
        if (authorized==true)
            userService.createNewRider(createRider);
        else
            return  ResponseEntity.status(HttpStatus.SC_CONFLICT).body("Logged In user is not admin");
     else 
        // Access denied
        throw new AccessDeniedException("Not logged in");
    
    return ResponseEntity.ok("Rider Created");

createRider.java

public class CreateRider 

    private String email;

    private String name;

    private String password;

    private String contactNumber;

    private String cnicNumber;

    private String drivingLicense;

    private String reference;

    private MultipartFile file;
     ..getters nad setters 
    

userService.createNewRider

public void createNewRider(CreateRider createRider) 
        Group group=groupRepo.findOne(Constants.RIDER_USER_GROUP);
        User user=new User();
        user.setGroup(group);
        user.setEmail(createRider.getEmail());
        user.setName(createRider.getName());
        user.setPassword(createRider.getPassword());
        user.setContactNumber(createRider.getContactNumber());
        user.setCnicNumber(createRider.getCnicNumber());
        user.setDrivingLicense(createRider.getDrivingLicense());
        user.setReference(createRider.getReference());
        userRepo.save(user);
        RiderLocation riderLocation=new RiderLocation();
        riderLocation.setRider(user);
        riderLocationRepo.save(riderLocation);
        ///User Photo 
         UserPhoto userPhoto=photoService.createUserPhoto(createRider.getFile(), user.getId());
         userPhotoRepo.save(userPhoto);



    

【问题讨论】：

如果你解决了，请分享你的解决方案

【参考方案1】：

您可以通过在控制器中添加以下内容以MultipartFile 获取个人资料图片

@RequestPart(value = "profilePic", required = false) MultipartFile profilePic

于是控制器方法就变成了

import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.multipart.MultipartFile;

@RequestMapping(method = RequestMethod.POST, value = "createRider")
public @ResponseBody ResponseEntity<?> createRider(
        @RequestPart CreateRider createRider,Authentication authentication,
        PersistentEntityResourceAssembler assembler, @RequestPart(value = "profilePic", required = false)  MultipartFile profilePic) 

【讨论】：

那么 requestBody createRider 呢？

@RequestBody CreateRider createRider 我还想要其他信息名称、密码等

您可以使用@RequestPart 加载，如答案中所述

好的，等我试试

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