如何下载由JAX-RS资源公开的zip文件并将其提供给Angular2 final的用户?
答案 0 :(得分:5)
将JAX-RS资源指定为:
@Produces({MediaType.APPLICATION_JSON})
@Consumes({MediaType.APPLICATION_JSON})
@Path("/myresource")
public class MyResource {
@Inject
MyFacade myFacade;
@POST
@Path("/download")
@Produces({"application/zip"})
public Response download(@NotNull Request req) {
byte[] zipFileContent = myFacade.download(req);
return Response
.ok(zipFileContent)
.type("application/zip")
.header("Content-Disposition", "attachment; filename = \"project.zip\"")
.build();
}
}
为了使用Angular2应用程序为最终用户使用和提供文件,我们可以使用以下服务:
...//other import statements
import fileSaver = require("file-saver");
@Injectable()
export class AngularService {
constructor(private http: Http) {
}
download(model: MyModel) {
this.http.post(BASE_URL + "myresource/download", JSON.stringify(model), {
method: RequestMethod.Post,
responseType: ResponseContentType.Blob,
headers: new Headers({'Content-type': 'application/json'})
}).subscribe(
(response) => {
var blob = new Blob([response.blob()], {type: 'application/zip'});
var filename = 'file.zip';
fileSaver.saveAs(blob, filename);
}
);
}
为了实现这一点,fileSaver
应该在package.json
中导入为:
"dependencies": {
// all angular2 dependencies...
"file-saver": "1.3.2"
},
现在,该服务可以注入需要访问download
方法的任何组件