Java 文件上传与参数在角度
我想发送一个文件上传,我在前端使用angular,在后端使用spring boot。我在请求中有参数要发送,在正文中有字节数组。但是当我发送这个时,我得到了错误400 这是我的后端Java 文件上传与参数在角度,java,angular,spring-boot,Java,Angular,Spring Boot,我想发送一个文件上传,我在前端使用angular,在后端使用spring boot。我在请求中有参数要发送,在正文中有字节数组。但是当我发送这个时,我得到了错误400 这是我的后端 @PostMapping(path=Urls.UPLOAD_FILE_IN_LIBELLE_GDA, produces = { MediaType.APPLICATION_JSON_VALUE}) public void uploadFileInLibelleGda( @Request
@PostMapping(path=Urls.UPLOAD_FILE_IN_LIBELLE_GDA, produces = { MediaType.APPLICATION_JSON_VALUE})
public void uploadFileInLibelleGda(
@RequestParam String processus,
@RequestParam String level0Name,
@RequestParam String nomFichier,
@RequestParam String nomLibelle,
@RequestParam String anneeFolderName,
@RequestParam String semaineFolderName,
@RequestBody ByteArrayResource fichier) throws Exception {
uploadService.uploadFileInLibelleGda(racine, processus,level0Name,nomLibelle, anneeFolderName, semaineFolderName, nomFichier, fichier.getByteArray());
}
这是我的前端
public uploadFiles(
nomFichier: string,
nomLibelle: string,
processus: string,
level0Name: string,
semaineFolderName: string,
anneeFolderName: string,
byte: Blob
): Observable<any> {
let params = new HttpParams();
params.append('level0Name', level0Name);
params.append('processus', processus);
params.append('nomLibelle', nomLibelle);
params.append('anneeFolderName', anneeFolderName);
params.append('semaineFolderName', semaineFolderName);
params.append('nomFichier', nomFichier);
return this.httpClient.post(this.urlUploadFile, byte, {
'params': params
});
}
公共上传文件(
名字:字符串,
nomLibelle:字符串,
进程:字符串,
level0Name:字符串,
semaineFolderName:string,
anneeFolderName:string,
字节:Blob
):可见{
设params=newhttpparams();
参数append('level0Name',level0Name);
参数append('processus',processus);
参数append('nomLibelle',nomLibelle);
参数append('anneeFolderName',anneeFolderName);
append('semaineFolderName',semaineFolderName');
参数append('nomFichier',nomFichier);
返回此.httpClient.post(此.urlUploadFile,字节{
“params”:params
});
}
尝试下面的代码
角度服务
public uploadFiles(
nomFichier: string,
nomLibelle: string,
processus: string,
level0Name: string,
semaineFolderName: string,
anneeFolderName: string,
byte: Blob
): Observable<any> {
// headers
let headers = new HttpHeaders();
headers.append('Content-Type', 'multipart/form-data');
let httpRequestHeaders = new HttpRequest({ headers: headers });
// body data
let params = new FormData();
params.append('level0Name', level0Name);
params.append('processus', processus);
params.append('nomLibelle', nomLibelle);
params.append('anneeFolderName', anneeFolderName);
params.append('semaineFolderName', semaineFolderName);
params.append('nomFichier', nomFichier);
params.append('fichier', bytes);
return this.httpClient.post(this.urlUploadFile, params, httpRequestHeaders);
}
对于多部分文件上传,spring已经提供了RequestPart使用它 @RequestParam依赖于通过注册转换器或PropertyEditor进行的类型转换,而RequestPart依赖于HttpMessageConverters,同时考虑到请求部件的“Content type”头。RequestParam可能与名称值表单字段一起使用
https://docs.spring.io/spring/docs/current/javadoc- api/org/springframework/web/bind/annotation/RequestPart.html
在SpringREST服务中使用@RequestPart(value=“uploadFile”)多部分文件fichier
let formData:FormData = new FormData();
formData.append('uploadFile', file, file.name);
let headers = new HttpHeaders();
/** In Angular 5, including the header Content-Type can invalidate your request */
headers.append('Content-Type', 'multipart/form-data');
headers.append('Accept', 'application/json');
let params = new HttpParams();
params.append('level0Name', '1');
params.append('processus', '1');
params.append('nomLibelle', '1');
params.append('anneeFolderName', '1');
params.append('semaineFolderName', '1');
params.append('nomFichier', '1');
this.httpClient.post(this.resourcePrefix+'/user/upload', formData, { headers: headers, params: params})
.subscribe(
data => console.log('success'),
error => console.log(error)
)
}
您需要使用FormData而不是HttpParamsSee我的更新答案,使用
MultipartFile
而不是ByteArrayResource
作为“fichiers”属性。我这样做了,但当我将其作为param传递但不作为requstbodyYeah时,它不起作用。请尝试此@RequestParam(“fichier”)MultipartFile fichier
是的,一旦您从angular将文件作为表单数据传递到请求体,它就会被映射,请参阅我的angular代码。我已将表单数据objparams
传递给请求主体。
let formData:FormData = new FormData();
formData.append('uploadFile', file, file.name);
let headers = new HttpHeaders();
/** In Angular 5, including the header Content-Type can invalidate your request */
headers.append('Content-Type', 'multipart/form-data');
headers.append('Accept', 'application/json');
let params = new HttpParams();
params.append('level0Name', '1');
params.append('processus', '1');
params.append('nomLibelle', '1');
params.append('anneeFolderName', '1');
params.append('semaineFolderName', '1');
params.append('nomFichier', '1');
this.httpClient.post(this.resourcePrefix+'/user/upload', formData, { headers: headers, params: params})
.subscribe(
data => console.log('success'),
error => console.log(error)
)
}