📄 uploadtest.java
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import java.io.*;import java.util.*;import javax.servlet.*;import javax.servlet.http.*;import com.oreilly.servlet.MultipartRequest;public class UploadTest extends HttpServlet { public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { res.setContentType("text/html"); PrintWriter out = res.getWriter(); try { // Blindly take it on faith this is a multipart/form-data request // Construct a MultipartRequest to help read the information. // Pass in the request, a directory to saves files to, and the // maximum POST size we should attempt to handle. // Here we (rudely) write to the server root and impose 5 Meg limit. MultipartRequest multi = new MultipartRequest(req, "C:/upload", 5 * 1024 * 1024); out.println("<HTML>"); out.println("<HEAD><TITLE>UploadTest</TITLE></HEAD>"); out.println("<BODY>"); out.println("<H1>UploadTest</H1>"); // Print the parameters we received out.println("<H3>Params:</H3>"); out.println("<PRE>"); Enumeration params = multi.getParameterNames(); while (params.hasMoreElements()) { String name = (String)params.nextElement(); String value = multi.getParameter(name); out.println(name + " = " + value); } out.println("</PRE>"); // Show which files we received // out.println("<H3>Files:</H3>"); // out.println("<PRE>"); Enumeration files = multi.getFileNames(); while (files.hasMoreElements()) { out.println("<H3>Files:</H3>"); out.println("<PRE>"); String name = (String)files.nextElement(); String filename = multi.getFilesystemName(name); String type = multi.getContentType(name); File f = multi.getFile(name); out.println("name: " + name); out.println("filename: " + filename); out.println("type: " + type); if (f != null) { out.println("length: " + f.length()); out.println(); } out.println("</PRE>"); } } catch (Exception e) { out.println("<PRE>"); e.printStackTrace(out); out.println("</PRE>"); } out.println("</BODY></HTML>"); }}⌨️ 快捷键说明
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