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上传word文档

发布于 2024-10-25 20:16:25 字数 214 浏览 2 评论 0原文

我需要从用户上传的word文档中提取文本。我得到了代码来从位于我的文档中提取单词米/克。但我的要求是允许用户使用上传按钮上传自己的文档阅读该文档（我不需要保存该文档）。你能建议我该怎么做吗？我需要知道单击上传按钮后需要发生什么。

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你的心境我的脸 2024-11-01 20:16:25

当用户上传文件时，获取关联的 InputStream 并将其存储到变量中，例如 inputStream。然后只需使用示例代码，并将此行：

fs = new POIFSFileSystem(new FileInputStream(filesname));

...替换为：

fs = new POIFSFileSystem(inputStream);

应该足够简单，假设您已经有一个 Servlet 来处理上传。

编辑：

以下是 servlet 如何工作的基础知识，假设您使用 commons-fileupload 来解析上传：

public class UploadServlet extends HttpServlet {
    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
        // Create a factory for disk-based file items
        FileItemFactory factory = new DiskFileItemFactory();

        // Create a new file upload handler
        ServletFileUpload upload = new ServletFileUpload(factory);

        // Parse the request
        List<FileItem> items = upload.parseRequest(request);

        //this assumes that the uploaded file is the only thing submitted by the form
        //if not you need to iterate the list and find it
        FileItem wordFile = items.get(0);

        //get a stream that can be used to read the uploaded file
        InputStream inputStream = wordFile.getInputStream();

        //and the rest you already know...
    }
}

When the user uploads their file, grab the associated InputStream and store it to a variable, like inputStream. Then just take the example code, and replace this line:

fs = new POIFSFileSystem(new FileInputStream(filesname));

...with something like:

fs = new POIFSFileSystem(inputStream);

Should be simple enough, assuming that you already have a Servlet in place to handle the upload.

Edit:

Here are the basics of how the servlet could work, assuming that you are using commons-fileupload to parse the upload:

public class UploadServlet extends HttpServlet {
    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
        // Create a factory for disk-based file items
        FileItemFactory factory = new DiskFileItemFactory();

        // Create a new file upload handler
        ServletFileUpload upload = new ServletFileUpload(factory);

        // Parse the request
        List<FileItem> items = upload.parseRequest(request);

        //this assumes that the uploaded file is the only thing submitted by the form
        //if not you need to iterate the list and find it
        FileItem wordFile = items.get(0);

        //get a stream that can be used to read the uploaded file
        InputStream inputStream = wordFile.getInputStream();

        //and the rest you already know...
    }
}

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