相关疑难解决方法(0)

我尝试将Angular 4的POST请求发送到我的Laravel后端.

我的LoginService有这个方法:

login(email: string, password: string) {
    return this.http.post(`http://10.0.1.19/login`, { email, password })
}

我在LoginComponent中订阅了这个方法:

.subscribe(
    (response: any) => {
        console.log(response)
        location.reload()
    }, 
    (error: any) => {
        console.log(error)
    })

这是我的Laravel后端方法:

...

if($this->auth->attempt(['email' => $email, 'password' => $password], true)) {
  return response('Success', 200);
}

return response('Unauthorized', 401);

我的Chrome开发工具说我的请求是成功的200状态代码.但我的Angular代码触发了error阻止并给了我这条消息:

解析http://10.0.1.19/api/login期间的Http失败

如果我从后端返回一个空数组,它可以工作......所以Angular试图将我的响应解析为JSON？我怎么能禁用它？

我想使用这个 Angular 6 代码实现文件下载：

休息API：

private static final Logger LOG = LoggerFactory.getLogger(DownloadsController.class);

@GetMapping(path="export") 
public ResponseEntity<byte[]> export() throws IOException {
    File pdfFile = Paths.get(EXTERNAL_FILE_PATH).toFile();


    byte[] fileContent = Files.readAllBytes(pdfFile.toPath());

    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.parseMediaType("application/pdf"));
    // Here you have to set the actual filename of your pdf
    String filename = "output.pdf";
    headers.setContentDispositionFormData(filename, filename);
    headers.setCacheControl("must-revalidate, post-check=0, pre-check=0");
    ResponseEntity<byte[]> response = new ResponseEntity<>(fileContent, headers, HttpStatus.OK);
    return response;
}

服务：

import {Injectable} from '@angular/core';
import {HttpClient, HttpParams} from "@angular/common/http";
import {Observable} from "rxjs/index";
import {environment} …