Question

我有一个控制器：

@RequestMapping(method = RequestMethod.POST, params = "action=downloading")
public void downloading(HttpServletRequest request,
        HttpServletResponse response) throws IOException {

    String dbType = request
            .getParameter(JDBCConnectionUtility.DATABASE);
    String fileName = request.getParameter("fileType");
    String browserVersion = request.getHeader(Constants.BROWSER_TYPE);
    boolean bFlag = (browserVersion.toUpperCase().contains("MSIE 5.5"));

    Utility.downloadFiles(response, response.getOutputStream(), bFlag ,
            fileName);
}

Utility类中的downloadFiles方法定义：

 public static boolean downloadFiles(HttpServletResponse res,
        ServletOutputStream out, boolean bIE55, String fileName) {

    File file = new File(fileName);
    if (bIE55) {
        res.setContentType("application/download; name=\"" + file.getName()
                + "\"");
        res.setHeader("Content-Disposition",
                "anything; filename=\"" + file.getName() + "\";");
    } else {
        res.setContentType("application/octet-st" + "; name=\""
                + file.getName() + "\"");
        res.setHeader("Content-Disposition",
                "anything; filename=\"" + file.getName() + "\";");
    }
        logger.debug("stored the response");
    BufferedInputStream bis = null;
    try {
        bis = new BufferedInputStream(new FileInputStream(file));

        int bytesRead = 0;
        byte[] byteBuff = new byte[1024];
        while ((bytesRead = bis.read(byteBuff)) > 0) {
            out.write(byteBuff, 0, bytesRead);
        }
        out.flush();
    } catch (Exception exc) {
        logger.error(exc.getStackTrace());
        return false;
    } finally {
        closeStream(bis);
    }

        logger.debug("In the download files Exit");
    return true;
}

我的代码段会下载所需的日志文件。预期的情况是所需的日志文件应作为浏览器窗口中的新选项卡打开。如何通过修改代码来实现这一目标？

Answer 1

尝试以下更改，

要在浏览器中打开而不是下载：

来自：

 res.setHeader("Content-Disposition",
                "inline; filename=\"" + file.getName() + "\";");

要：

target="_blank"

要在新标签页中打开：

添加<form method="post" action="/urlhere" target="_blank">属性

如果是表单提交

<a href="/urlhere" target="_blank"/>

如果是锚标记

/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 /Users/erdogan/PycharmProjects/CNN/tens/model/research/object_detection/object_detection_tutorial.py
/Users/erdogan/PycharmProjects/CNN/tens/model/research/object_detection/utils/visualization_utils.py:25: UserWarning: 
This call to matplotlib.use() has no effect because the backend has already
been chosen; matplotlib.use() must be called *before* pylab, matplotlib.pyplot,
or matplotlib.backends is imported for the first time.

The backend was *originally* set to 'MacOSX' by the following code:
  File "/Users/erdogan/PycharmProjects/CNN/tens/model/research/object_detection/object_detection_tutorial.py", line 22, in <module>
    from matplotlib import pyplot as plt
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/matplotlib/pyplot.py", line 71, in <module>
    from matplotlib.backends import pylab_setup
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/matplotlib/backends/__init__.py", line 16, in <module>
    line for line in traceback.format_stack()


  import matplotlib; matplotlib.use('Agg')  # pylint: disable=multiple-statements

在浏览器中以新标签打开文件而不是下载？

1 个答案: