我尝试使用ng-file-upload从一个角度4应用程序发送一个文件到一个弹簧启动应用程序,但抛出异常当前请求不是一个多部分请求 这是例外
org.springframework.web.util.NestedServletException:Request 处理失败;嵌套异常是 org.springframework.web.multipart.MultipartException:当前请求 不是多部分请求 在org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) 在org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) 在javax.servlet.http.HttpServlet.service(HttpServlet.java:707) 在org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) 在javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) at io.undertow.servlet.handlers.FilterHandler $ FilterChainImpl.doFilter(FilterHandler.java:129) 在com.rs.unified.gateway.security.jwt.JWTFilter.doFilter(JWTFilter.java:50) 在io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) at io.undertow.servlet.handlers.FilterHandler $ FilterChainImpl.doFilter(FilterHandler.java:131) 在org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96) 在org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 在io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) at io.undertow.servlet.handlers.FilterHandler $ FilterChainImpl.doFilter(FilterHandler.java:131) 在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:317) 在org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) 在org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) 在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:331) 在org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114) 在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:331) 在org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) 在org.springframework.security.web.FilterChainProxy $ VirtualFilterChain.doFilter(FilterChainProxy.java:331) 在org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
upload(item: FileItem ) {
const copy: File = item._file;
const fd = new FormData();
fd.append('file', copy);
this.serviceData.uploadFile(fd).subscribe((res: Response) => {
this.activeModal.close();
},
);
}
///服务代码
uploadFile(file): Observable<any> {
const headers = new Headers({ 'Content-Type': 'multipart/form-data' });
const options = new RequestOptions({ headers: headers });
return this.http.post(this.resourceUrl, file,
options );
}
/// java代码
@PostMapping(value = "/upload", consumes = { "multipart/form-data", MediaType.APPLICATION_JSON_VALUE }) // 4.3
public ResponseEntity<Object> singleFileSend(HttpServletRequest request,@RequestPart MultipartFile file,
RedirectAttributes redirectAttributes) {
log.info("The received file" + file.getName());
HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(null, SecurityUtils.resolveToken(request));
RestTemplate restTemplate = new RestTemplate();
HttpEntity<Object> entity = new HttpEntity<>(file,headers);
ResponseEntity<Object> responseEntity = restTemplate.exchange(urlCoverage+"/coverage/uploadCoverage/", HttpMethod.POST, entity, Object.class);
return new ResponseEntity<>(responseEntity.getBody(), null, HttpStatus.OK);
}
答案 0 :(得分:2)
<form (ngSubmit)="upload()" [formGroup]="form">
<input ng-model="file_upload" name="file" type="file" (change)="fileChange($event)" #fileInput>
<button type="submit">Submit</button>
</form>
import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup } from "@angular/forms";
import { HttpClient } from '@angular/common/http';
...
form: FormGroup;
file: File;
constructor(private fb: FormBuilder, private http: HttpClient) {}
ngOnInit() {
this.createForm();
}
// Instantiate an AbstractControl from a user specified configuration
createForm() {
this.form = this.fb.group({
file_upload: null
});
}
// Check for changes in files inputs via a DOMString reprsenting the name of an event
fileChange(event: any) {
// Instantiate an object to read the file content
let reader = new FileReader();
// when the load event is fired and the file not empty
if(event.target.files && event.target.files.length > 0) {
// Fill file variable with the file content
this.file = event.target.files[0];
}
}
// Upload the file to the API
upload() {
// Instantiate a FormData to store form fields and encode the file
let body = new FormData();
// Add file content to prepare the request
body.append("file", this.file);
// Launch post request
this.http.post('http://localhost:8080/', body)
.subscribe(
// Admire results
(data) => {console.log(data)},
// Or errors :-(
error => console.log(error),
// tell us if it's finished
() => { console.log("completed") }
);
}
@PostMapping("/")
public String handleFileUpload(@RequestParam("file") MultipartFile file){
...
return ..;
}
答案 1 :(得分:0)
只需删除您的“内容类型”,Chrome 或 Postman 将默认设置。
你的 Rest 控制器应该:
public ResponseEntity<Object> singleFileSend(HttpServletRequest request,@RequestParam("file") MultipartFile file, RedirectAttributes redirectAttributes) {