📄 downservlet.java
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package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;
import com.page.Show;
public class DownServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public DownServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("GB2312");
response.setContentType("text/html;charset=GB2312");
PrintWriter out = response.getWriter();
Show show=new Show();
//out.print(show.errorBox("下载文件失败", "警告"));
//HttpSession session = request.getSession(true);
ServletContext session = getServletContext();
String up=(String) session.getAttribute("up");
if(up!=null){
SmartUpload su = new SmartUpload();
// 初始化
su.initialize(this.getServletConfig(),request,response);
// 设定contentDisposition为null以禁止浏览器自动打开文件，
//保证点击链接后是下载文件。若不设定，则下载的文件扩展名为
//doc时，浏览器将自动用word打开它。扩展名为pdf时，
//浏览器将用acrobat打开。
su.setContentDisposition(null);
String filename=(String) session.getAttribute("filename");
// String filename=new String(filenamepr.getBytes("utf-8"));
System.out.println(filename);
// 下载文件
try {
su.downloadFile("c:\\ocr\\file\\"+filename+".txt");
//删除图片和txt文件
//注释之后就不删除相应的文件了
/*String filepath="c:\\ocr\\file\\"+filename+".txt";
String imagepath="c:\\ocr\\images\\"+filename;
java.io.File filef=new java.io.File(filepath);
java.io.File fileimage=new java.io.File(imagepath);
filef.delete();
fileimage.delete();*/
} catch (SmartUploadException e) {
// TODO Auto-generated catch block
out.print(show.errorBox("下载文件失败", "警告"));
e.printStackTrace();
}
//
}
else{
out.print(show.errorBox("请先上传识别文件后在下载文档！！", "警告"));
}
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
/*out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();*/
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
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