使用FileSaver和Blob将响应正文另存为文件 [英] Save a response body as file with FileSaver and blob

问题描述

我想从api下载并保存文件.我的文件名为text.txt，但保存的文件名为:_text.txt_，此文件的内容为:[object Object]

I want to download and save a file from an api. The name of my file is text.txt but the saved file is called: _text.txt_ and the content of this file is: [object Object]

这是我下载文件的功能:

This is my function to download as file:

const options = {
      headers: new HttpHeaders().append('Authorization', this.oAuthService.getAccessToken()),
      params: new HttpParams().append('responseType', 'text'),
      observe: 'response' as 'response'
    }

    return this.http.get(this.fileServerUrl + 'file/download/' + filename + '/' + version, options)
      .subscribe(
        resp => { this.saveToFileSystem(resp)

      });
  }

  private saveToFileSystem(response) {
    const contentDispositionHeader: string = response.headers.get('Disposition');
    const parts: string[] = contentDispositionHeader.split(';');
    const filename = parts[1].split('=')[1];
    filename.replace(/"/g, '');
    console.log(filename);
    console.log(response.body)
    const blob = new Blob([response.body], { type: 'text/plain' });
    saveAs(blob, filename);
  }

第一个console.log的输出是text.txt，response.body的console.log是:这是一个测试文本.

the output of the first console.log is text.txt and the console.log of the response.body is: this is a test text..

为什么保存的文件名开头和结尾都是_，而内容不是响应正文中的文本.

so why is the saved file name with _ at the begin and end and the content not the text from the response body.

感谢前进

推荐答案

尝试一下:

const blob = new Blob([JSON.stringify(response.body)], { type: 'text/plain' });

对于_text.txt_: 字符串是不可变的类型.所以filename.replace ...不会更改文件名的值，它会返回新值. 您必须创建新变量:

And for _text.txt_: String is immutable type. So filename.replace... will not change filename value, it's returns new value. You have to create new variable:

const newFileName = filename.replace(/"/g, '');
...
saveAs(blob, newFileName);

或仅将filename.replace(/"/g, '')放入saveAs

saveAs(blob, filename.replace(/"/g, ''));

这篇关于使用FileSaver和Blob将响应正文另存为文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！