服务器中的错误 500 [英] Error 500 in server
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问题描述
我正在尝试将 Excel 从 Angular2 发送到服务器 SpringBoot，但出现错误 500:
I am trying send excell from Angular2 to Server SpringBoot , but I get error 500 :
HTML:
<form #fileLoad="ngForm" (ngSubmit)="addExcell()">
<input type="file" id="file" name="file" class="form-control" (change)="fileChange($event)" accept=".xlsx">
<button class="btn btn-sm btn-outline btn-block">Add</button>
</form>
Then I select a File.xlsx
fileChange(event) {
let fileList: FileList = event.target.files;
if (fileList.length > 0) {
let file: File = fileList[0];
this.formData.append('uploadFile', file, file.name);
}
}
我确实点击添加
addExcell() {
const url = "http://localhost:8080/ml/insert";
this.service.sendFile(url, this.formData).subscribe(data => {
console.log(data);
}
);
}
在我的服务中，我配置标头并发送到 SpringBoot
In my service I config headers and send to SpringBoot
sendFile(url, myFile) {
let headers = new Headers();
headers.append('Content-Type', 'multipart/form-data');
headers.append('Accept', 'application/json');
return this.http2.post(url, myFile , { headers: headers });
}
终于在我的 SpringBoot 中了:
Finally in my SpringBoot:
@RestController
@RequestMapping(value = { "/ml" })
@CrossOrigin
public class MyFile{
@RequestMapping(method = RequestMethod.POST, value = "/insert" , headers = "Content-Type= multipart/form-data", produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public String insert(@RequestBody MultipartFile multipart) {
System.out.println("file" + multipart);
return "SpringBoot";
}
}
最后我在 HTML 中得到错误:
Finally I get error in HTML :
在我的 SpringBoot 中你得到:
In my SpringBoot y get :
org.apache.tomcat.util.http.fileupload.FileUploadException: the request was rejected because no multipart boundary was found
at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:831) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.tomcat.util.http.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:256) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:280) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.connector.Request.parseParts(Request.java:2869) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.connector.Request.parseParameters(Request.java:3216) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.connector.Request.getParameter(Request.java:1137) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:381) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:75) ~[spring-web-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.14.RELEASE.jar:4.3.14.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) [tomcat-embed-core-8.5.27.jar:8.5.27]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.27.jar:8.5.27]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_171]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_171]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.27.jar:8.5.27]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_171]
但是我的 Angular 和 SpringBoot 中有 headers = "Content-Type= multipart/form-data"，我不明白为什么会出现此错误.
But I have headers = "Content-Type= multipart/form-data" in my Angular and in my SpringBoot, I don't understand why I have this error.
推荐答案
你应该使用 @RequestParam 而不是 @RequestBody.
You should use @RequestParam instead of @RequestBody.
@RestController
@RequestMapping("/ml")
public class UploadController {
@PostMapping("/insert")
public String uploadFileForm(@RequestParam("uploadFile") MultipartFile file) {
return file.getOriginalFilename();
}
}
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