将 zip 文件从 REST 返回到客户端不弹出文件

Posted 2023-03-06

【中文标题】将 zip 文件从 REST 返回到客户端不弹出文件

【英文标题】：Returning zip file from REST to client not popping up the file

【发布时间】：2016-03-19 10:15:13

【问题描述】：

我正在尝试通过添加 Content-Type 和 Content-Disposition 来下载从 REST 发送的 zip 文件，方法如下：

服务器端

@Produces("application/x-zip-compressed")
    public Response export(@PathParam("username") String username,
            @Context UriInfo ui) 

        long timeStamp = new Date().getTime();
        String exportedFolder = "/home/madmin/pods/"+username+"/download/";

        String Path = ui.getRequestUri().toString()
                .replace(replaceMe + username, "");

        Path = Path.replace("http://", "https://");


        Path = Path.replace(",system/export", "");



        String outputZipFile = exportedFolder+"exported_on_"+timeStamp+".zip";
        String sourceFolder = null;

        File file = new File(exportedFolder);
        if (!file.exists()) 
            if (file.mkdirs()) 
                System.out.println("Directory is created!");
             else 
                System.out.println("Failed to create directory for exporting!");
                //return ;
            
        

        constructGraphs cGraphs = new constructGraphs(Path, username);
        sourceFolder = cGraphs.writeGraphFiles();

        generateZipFile appZip = new generateZipFile(sourceFolder,outputZipFile);
            appZip.generateFileList(new File(sourceFolder));
            appZip.zipIt(outputZipFile);

            //Read the outputZipFile as inputStream and return it

            FileInputStream fileIs = null;
        try 
            fileIs = new FileInputStream(outputZipFile);
         catch (IOException e) 
            throw new WebApplicationException(404);
        

        String fileName= outputZipFile.substring(outputZipFile.lastIndexOf("/")+1, outputZipFile.length());

        return Response.status(Status.OK).entity(fileIs).header("Content-Disposition","attachment; filename = "+fileName).build();
    

客户端：

另一方面，客户端期望application/x-zip-compressed如下：

$http(
        method: 'GET',
        url: uri,
        headers: 
          'Accept': 'application/x-zip-compressed'
        ,
        withCredentials: true
      ).
      success(function(data, status, headers) 
        if (status == 200 || status == 201) 
          notify('Success', 'Node exported.');
        
      ).
      error(function(data, status) 
        if (status == 401) 
          notify('Forbidden', 'Authentication required to edit the resource.');
         else if (status == 403) 
          notify('Forbidden', 'You are not allowed to edit the resource.');
         else 
          notify('Failed', status + " " + data);
        
      );

文件没有弹出，而是在响应中看到输入流。

我在这里做错了什么吗？任何帮助将不胜感激。

【问题讨论】：

在返回响应之前尝试这个 response.setContentType("application/x-zip-compressed")

@userRaj 检查默认情况下在标头中设置的响应，这就是为什么我不必明确地这样做。

【参考方案1】：

使用 AJAX 是不可能的，我假设您在这种情况下使用的是 angularjs http 服务。见：Why threre is no way to download file using ajax request?。

您有不同的选择来解决您的问题。 例如：easiest way to open a download window without navigating away from the page 或How do you serve a file for download with AngularJS or javascript?