[英]Spring boot upload form data and file
我正在制作一個 Spring Boot REST 應用程序。 我正在嘗試制作一個多部分表單上傳控制器,它將一起處理表單數據和文件上傳。 這是我目前的控制器代碼:
@RequestMapping(value = "", method = RequestMethod.POST, headers="Content-Type=multipart/form-data")
@PreAuthorize("hasRole('ROLE_MODERATOR')")
@ResponseStatus(HttpStatus.CREATED)
public void createNewObjectWithImage(
/*@RequestParam(value="file", required=true) MultipartFile file,
@RequestParam(value="param_name_1", required=true) final String param_name_1,
@RequestParam(value="param_name_2", required=true) final String param_name_2,
@RequestParam(value="param_name_3", required=true) final String param_name_3,
@RequestParam(value="param_name_4", required=true) final String param_name_4,
@RequestParam(value="param_name_5", required=true) final String param_name_5*/
@ModelAttribute ModelDTO model,
BindingResult result) throws MyRestPreconditionsException {
//ModelDTO model = new ModelDTO(param_name_1, param_name_2, param_name_3, param_name_4, param_name_5);
modelValidator.validate(model, result);
if(result.hasErrors()){
MyRestPreconditionsException ex = new MyRestPreconditionsException(
"Model creation error",
"Some of the elements in the request are missing or invalid");
ex.getErrors().addAll(
result.getFieldErrors().stream().map(f -> f.getField()+" - "+f.getDefaultMessage()).collect(Collectors.toList()));
throw ex;
}
// at the moment, model has a MultipartFile property
//model.setImage(file);
modelServiceImpl.addNew(model);
}
我已經嘗試過 @ModelAttribute 注釋和發送請求參數,但這兩種方法都失敗了。
這是我發送的請求:
---------------------------acebdf13572468
Content-Disposition: form-data; name="file"; filename="mint.jpg"
Content-Type: image/jpeg
<@INCLUDE *C:\Users\Lazaruss\Desktop\mint.jpg*@>
---------------------------acebdf13572468
Content-Disposition: form-data; name=”param_name_1”
string_value_1
---------------------------acebdf13572468
Content-Disposition: form-data; name=”param_name_2”
string_value_2
---------------------------acebdf13572468
Content-Disposition: form-data; name=”param_name_3”
string_value_3
---------------------------acebdf13572468
Content-Disposition: form-data; name=”param_name_4”
string_value_4
---------------------------acebdf13572468
Content-Disposition: form-data; name=”param_name_5”
string_value_5
---------------------------acebdf13572468--
我的應用程序是無狀態的,並與權威一起使用 spring 安全性。 在我的安全包中,我包含了 AbstractSecurityWebApplicationInitializer 類
public class SecurityApplicationInitializer extends AbstractSecurityWebApplicationInitializer {
@Override
protected void beforeSpringSecurityFilterChain(ServletContext servletContext) {
insertFilters(servletContext, new MultipartFilter());
}
}
我還在 @Configuration 類中使用了 StandardServletMultipartResolver
在我的 WebInitializer 中,我添加了以下代碼:
MultipartConfigElement multipartConfigElement = new MultipartConfigElement("/tmp",
3 * 1024 * 1024, 6 * 1024 * 1024, 1 * 512 * 1024);
apiSR.setMultipartConfig(multipartConfigElement);
當我嘗試使用帶有注釋代碼(@RequestParams 注釋)的控制器時,出現 404 not found 錯誤。 當我嘗試使用帶有 @ModuleAttribute 注釋的控制器時,模型對象為空。
我有一個類似的問題。 當您想發送Object
+ Multipart
。 你必須(或者至少我不知道其他解決方案)讓你的控制器像這樣:
public void createNewObjectWithImage(@RequestParam("model") String model, @RequestParam(value = "file", required = false) MultipartFile file)
然后:使用以下方法將字符串轉換為您的對象:
ObjectMapper mapper = new ObjectMapper();
ModelDTO modelDTO = mapper.readValue(model, ModelDTO.class);
可以接收對象和文件
@PostMapping(value = "/v1/catalog/create", consumes = MediaType.MULTIPART_FORM_DATA_VALUE )
public void createNewObjectWithImage(
@RequestPart ModelTO modelTO,
@RequestPart MultipartFile image)
模型TO
public class ModelTO {
private String name;
public ModelTO() {
super();
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
和卷曲示例:
curl -X POST "https://your-url.com/v1/catalog/create" -H "accept: application/json;charset=UTF-8" -H "Content-Type: multipart/form-data" -F "image=@/pathtoimage/powerRager.jpg;type=image/jpeg" -F "modelTO={\"name\":\"White\"};type=application/json;charset=utf-8"
郵遞員和其他軟件不支持表單數據參數的發送應用程序/json 類型。
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