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| //img.jsp页面 | |
| <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> | |
| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> | |
| <html> | |
| <head> | |
| <title>My JSP 'img.jsp' starting page</title> | |
| </head> | |
| <body> | |
| <img alt="" src="img.jspx?img=2.png"> | |
| </body> | |
| </html> | |
| //imgServlet文件 | |
| package com.kaishengit.web; | |
| import java.io.File; | |
| import java.io.FileInputStream; | |
| import java.io.IOException; | |
| import java.io.InputStream; | |
| import java.io.OutputStream; | |
| import javax.servlet.ServletException; | |
| import javax.servlet.http.HttpServlet; | |
| import javax.servlet.http.HttpServletRequest; | |
| import javax.servlet.http.HttpServletResponse; | |
| public class ImgServlet extends HttpServlet { | |
| private static final long serialVersionUID = 1L; | |
| @Override | |
| protected void service(HttpServletRequest request, HttpServletResponse response) | |
| throws ServletException, IOException { | |
| String img = request.getParameter("img"); | |
| File file = new File("C:/upload",img); | |
| if(file.exists()) { | |
| InputStream in = new FileInputStream(file); | |
| OutputStream out = response.getOutputStream(); | |
| byte[] buffer = new byte[512]; | |
| int len = -1; | |
| while((len = in.read(buffer)) != -1) { | |
| out.write(buffer,0,len); | |
| } | |
| out.flush(); | |
| in.close(); | |
| out.close(); | |
| } else { | |
| response.sendError(404); | |
| } | |
| } | |
| } | |
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