Question

最终使用Android应用程序与我的aws服务器和数据库进行通信，我可以使用postman和GET服务本地与数据库进行通信，但是现在我正在尝试将我的spring应用程序更改为POST并使用android studio中的对象需要这样我可以将我的应用程序加载到云端并从android

运行

哪些线路需要改变，我对此完全陌生，并尝试学习，因为我同意这一点。

主控制器类

@RequestMapping(path="/demo") // This means URL's start with /demo (after Application path)
public class MainController {
    @Autowired // This means to get the bean called userRepository
    // Which is auto-generated by Spring, we will use it to handle the data
    private ImageRepository imageRepository;


    @RequestMapping(path = "/add") // Map ONLY GET Requests
    public @ResponseBody String addNewImages (@RequestParam String word
            , @RequestParam String image, @RequestParam String category,
                                              @RequestParam int number, @RequestParam String users_username) {
        // @ResponseBody means the returned String is the response, not a view name
        // @RequestParam means it is a parameter from the GET or POST request

        images i = new images();

        i.setWord(word);
        i.setImage(image.getBytes());
        i.setCategory(category);
        i.setNumber(number);
        i.setUsers_username(users_username);;



        //imageRepository.save(i);
        return "Saved";

    } 

    @PostMapping(path = "/add")
    public String addsubmit(@ModelAttribute images img){
        imageRepository.save(img);
        return "saved";
    }

    @GetMapping(path="/all")
    public @ResponseBody
    Iterable<images> getAllImages() {
        // This returns a JSON or XML with the users
        return imageRepository.findAll();
    }
}

图像类

public images(String word, byte[] image, String category, int number, String users_username) {
    this.word = word;
    this.image = image;
    this.category = category;
    this.number = number;
    this.users_username = users_username;
}

public Integer getId() {
    return id;
}

public void setId(Integer id) {
    this.id = id;
}

public String getWord() {
    return word;
}

public void setWord(String word) {
    this.word = word;
}

public byte[] getImage() {
    return image;
}

public void setImage(byte[] image) {
    this.image = image;
}

public String getCategory() {
    return category;
}

public void setCategory(String category) {
    this.category = category;
}

public int getNumber() {
    return number;
}

public void setNumber(int number) {
    this.number = number;
}

public String getUsers_username() {
    return users_username;
}

public void setUsers_username(String users_username) {
    this.users_username = users_username;
}

Answer 1

也许您只需更改Requestmethod？

@RequestMapping(path = "/add", method = RequestMethod.POST)

Answer 2

要更改您必须执行以下操作的请求类型：

@RequestMapping(path="/demo", method=RequestMethod.POST)

如果要将对象（例如，JSON）发布到端点，则将此对象作为方法参数发送，并使用@RequestBody注释它

public @ResponseBody String addNewImages (@RequestBody Object body) {}

如何将代码从GET更改为POST并使用对象

2 个答案: