Spring Boot + angularjs-用于文件下载，内容处置未打开“另存为”

Question

当我单击下载按钮时，我想显示“另存为”窗口。

但是，当单击下载按钮时，“另存为”不会显示并立即下载。

我将response.setContentType的应用程序/八位字节流更改为x-download和zip，但是“另存为”未打开。

我该怎么办？

html

<button type="button" class="btn btn-large btn-danger" ng-click="serverInfoDownload()">Download</button>

controller.js

$scope.serverInfoDownload = function(){
        fileDownload.downloadFile(function (success){
            console.log("download success");
        }, function(error){
            console.log("error", error);
        });
        $(".serverInfoDownload").modal('hide');
    }

service.js

angular.module('oggApp')
.factory('fileDownload', ['$resource', function ($resource) {
    return $resource('/api/download/',{

    }, {
        downloadFile: {
            url: '/api/download/download',
            method: 'GET'
            }
        }
    );
}]);

controller.java

@RequestMapping(value="download", method=RequestMethod.GET)
public void download(HttpServletRequest request, HttpServletResponse response) throws Exception {

    try {
        backup.backupDatabase();
    } catch (SQLException e) {
        System.out.println(e.getMessage());
    }

    String fileName = backup.getFileName();
    File downloadfile = new File(backup.getUrl() + fileName+".zip");

    if (downloadfile.exists() && downloadfile.isFile()) {
        response.setContentType("application/octet-stream; charset=utf-8");
        response.setContentLength((int) downloadfile.length());
        ServletOutputStream os = null;
        FileInputStream fis = null;
        try {
            response.setHeader("Content-Disposition", getDisposition(fileName+".zip", check_browser(request)));
            response.setHeader("Content-Transfer-Encoding", "binary");
            os = response.getOutputStream();
            fis = new FileInputStream(downloadfile);

            FileCopyUtils.copy(fis, os);

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (fis != null){
                    fis.close();
                }
                os.flush();
                os.close();  
            } catch (Exception e2) {}
        }
    }else {
        System.out.println("FILE Not Found");
    }
}

 private String getDisposition(String down_filename, String browser_check) throws UnsupportedEncodingException {
    String prefix = "attachment; filename=";
    String encodedfilename = null;
    System.out.println("browser_check:"+browser_check);
    if (browser_check.equals("ie")) {
        encodedfilename = URLEncoder.encode(down_filename, "UTF-8").replaceAll("\\+", "%20");
    }else if (browser_check.equals("chrome")) {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < down_filename.length(); i++){
            char c = down_filename.charAt(i);
            if (c > '~') {
                sb.append(URLEncoder.encode("" + c, "UTF-8"));
            } else {
                sb.append(c);
            }
        }
        encodedfilename = sb.toString();
    }else {
        encodedfilename = "\"" + new String(down_filename.getBytes("UTF-8"), "8859_1") + "\"";
    }
    return prefix + encodedfilename;
}