1 <servlet>2         <servlet-name>chartServlet</servlet-name>3         <servlet-class>com.stronginfo.transenly.website.servlet.chartServlet</servlet-class>4     </servlet>5     <servlet-mapping>6         <servlet-name>chartServlet</servlet-name>7         <url-pattern>/chartServlet</url-pattern>8     </servlet-mapping>

 1 package com.stronginfo.transenly.website.servlet; 2  3 import java.io.FileInputStream; 4 import java.io.IOException; 5  6 import javax.servlet.ServletException; 7 import javax.servlet.ServletOutputStream; 8 import javax.servlet.http.HttpServlet; 9 import javax.servlet.http.HttpServletRequest;10 import javax.servlet.http.HttpServletResponse;11 12 import com.stronginfo.core.dao.OrderDao;13 import com.stronginfo.transenly.util.ConfigManager;14 15 public class chartServlet extends HttpServlet16 {17 18     private static final long serialVersionUID = 1L;19 20    21     22 23     public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException24     {25 26     27         ServletOutputStream outStream = res.getOutputStream();// 得到向客户端输出二进制数据的对象28         FileInputStream fis = new FileInputStream(图片路径); // 以byte流的方式打开文件29         // 读数据30         byte data[] = new byte[1000];31         while (fis.read(data) > 0)32         {33             outStream.write(data);34         }35         fis.close();36         res.setContentType("image/*"); // 设置返回的文件类型37         outStream.write(data); // 输出数据38 39         outStream.close();40 41     }42 43 }