想使用spring boot将图像导入mongodb

Posted 2023-03-29

【中文标题】想使用spring boot将图像导入mongodb

【英文标题】：Want to import image to mongo using springboot

【发布时间】：2020-11-11 15:16:50

【问题描述】：

仅创建一个模型时遇到问题，创建了照片模型和收款人模型，但想将照片模型添加到收款人模型但不接受照片的二进制部分。尝试从邮递员发布时不断收到二进制错误，知道需要更改控制器但有点卡住，任何链接或对初学者的建议将不胜感激

//Payee model
    public class Payee 
                @Id
                private String id;
            
                private Contact contact;
                private String notes;
                private String project;
                private String member;
                private Integer staffMember;
                private Photo photo;
                private BankAccount userBankAccount;
                private PayeeBankAccount payeeBankAccountList;
            

//Payee constructor
                public Payee(Contact contact, String notes, String project, String member, Integer staffMember,
                             Photo photo, BankAccount userBankAccount, PayeeBankAccount payeeBankAccountList) 
                    this.contact = contact;
                    this.notes = notes;
                    this.project = project;
                    this.member = member;
                    this.staffMember = staffMember;
                    this.photo = photo;
            
                    this.userBankAccount = userBankAccount;
                    this.payeeBankAccountList = payeeBankAccountList;
                
            
// Getters and Setters
                public String getId() return id;
            
                public void setId(String id) this.id = id;
            
                public Contact getContact()  return contact; 
            
                public void setContact(Contact contact)  this.contact = contact; 
            
                public String getNotes()  return notes; 
            
                public void setNotes(String notes)  this.notes = notes; 
            
                public String getProject()  return project; 
            
                public void setProject(String project)  this.project = project; 
            
                public String getMember()  return member; 
            
                public void setMember(String member)  this.member = member; 
            
                public Integer getStaffMember()  return staffMember; 
            
                public void setStaffMember(Integer staffMember)  this.staffMember = staffMember; 
            
                public Photo getPhoto() return photo;
            
                public void setPhoto(Photo photo) this.photo = photo;
            
                public BankAccount getUserBankAccount()  return userBankAccount; 
            
                public void setUserBankAccount(BankAccount userBankAccount)  this.userBankAccount = userBankAccount
            
                public PayeeBankAccount getPayeeBankAccountList()  return payeeBankAccountList; 
            
                public void setPayeeBankAccountList(PayeeBankAccount payeeBankAccountList)this.payeeBankAccountList= payeeBankAccountList; 
            
            
            

            //photo model
            public class Photo 
            
                @Id
                private String id;
            
                private String title;
            
                private Binary image;
            
//Photo constructor
                public Photo(String id, String title, Binary image) 
                    this.id = id;
                    this.title = title;
                    this.image = image;
                
            
                public Photo(String title) 
                    super();
                    this.title = title;
                
            
                public String getId() 
                    return id;
                
            
                public void setId(String id) 
                    this.id = id;
                
            
                public String getTitle() 
                    return title;
                
            
                public void setTitle(String title) 
                    this.title = title;
                
            
                public Binary getImage() 
                    return image;
                
            
                public void setImage(Binary image) 
                    this.image = image;
                
            
                @Override
                public String toString() 
                    return "Photo \[id=" + id + ", title=" + title + ", image=" + image + "\]";
                
            
            
            
        //photo service
            @Service
            public class PhotoService 
            
                @Autowired
                private PhotoRepository photoRepo;
            
                public Photo getPhoto(String id) 
                    return photoRepo.findById(id).get();
                
            
                public String addPhoto(String title, MultipartFile file) throws IOException 
                    Photo photo = new Photo(title);
                    photo.setImage(new Binary(BsonBinarySubType.BINARY, file.getBytes()));
                    photo = photoRepo.insert(photo);
                    return photo.getId();
                
            
            

照片和收款人 PostMapping 应该是一体的，这部分不知道去哪里 //添加收款人 @PostMapping('/addPayee') 公共无效插入（@RequestBody 收款人收款人） this.payeeRepository.save(payee);

        //add photo
             @PostMapping('/photos/add')
                public String addPhoto(@RequestBody Payee payee , @RequestParam("title") String title, @RequestParam("image") MultipartFile image, Model model)
                        throws IOException 
                    String id = photoService.addPhoto(title,image);
                    return id;
                ][1]][1]
                
    
    
      [1]: https://i.stack.imgur.com/lF6KZ.png

【问题讨论】：

看起来像这个：***.com/questions/63026184/…

看看这个***.com/questions/61343477/…。当您发送文件时，您使用@RequestPart 来获取它，如图所示。 @RequestPart 和 @Request body 不能同时使用，@RequestPart 也不能用于 body。

嗨，我一直收到八位字节流错误

【参考方案1】：

在你的模型中发现它有二进制的图像，在你的控制器中有一些类似的东西

@RequestMapping(value = "/update", method = RequestMethod.POST, consumes = "multipart/form-data") 公共 ResponseEntity 更新（@RequestPart("payee") @Valid Payee payee, @RequestPart("file") @Valid MultipartFile image）抛出 IOException // 更新收款人的例程，包括图片 如果（图像！= null） payee.setImage(new Binary(BsonBinarySubType.BINARY, image.getBytes())); 收款人结果 = payeeRepository.save(payee); 返回 ResponseEntity.ok().body(result);