servlet传汉字出现问题
本帖最后由 itelly 于 2012-11-27 13:16:12 编辑 在index.jsp页面上用表单上传一个文件,然后再servle中获得输入的汉字
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="/Upload/servlet/Upload" method="post" enctype="multipart/form-data">
商品<input type="text" name="product"><br>
图片<input type="file" name="myFile"/><br>
<input type="submit" value="提交"/>
</form>
</body>
</html>
package com.haolly;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.jspsmart.upload.File;
import com.jspsmart.upload.Request;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;
public class Upload extends HttpServlet
{
/**
* Constructor of the object.
*/
public Upload()
{
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
{
doPost(request, response);
}
/**
* 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
{
//request.setCharacterEncoding("utf-8");//这里设置后不管用
//创建smartupload
SmartUpload upload=new SmartUpload();
//初始化
upload.initialize(this.getServletConfig(), request, response);
//限定上传数据的长度10M
upload.setTotalMaxFileSize(1024*1024*10);
//限定上传文件格式
upload.setAllowedFilesList("jpg,JPG,gif");
try
{
//调用上传
upload.upload();
//将上传的文件放在指定目录
upload.save("/upload");
//获得文件参数
File file=upload.getFiles().getFile(0);
String filename=file.getFileName();
String fileExt=file.getFileExt();
//获得form表单的参数
Request req=upload.getRequest();
String name=req.getParameter("product");
String n=new String(name.getBytes("ISO-8859-1"),"UTF-8");//换成这样也不行,GBK,GB2312都不行
System.out.println(n);
} catch (SmartUploadException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException
{
// Put your code here
}
}
<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<form action="Test" method="post" enctype="multipart/form-data">
goods:<input type="text" name="product">
picture:<input type="file" name="myFile"/>
<input type="submit" value="submit"/>
</form>
</body>
</html>
/*
* To change this template, choose Tools
[其他解释]
Templates
* and open the template in the editor.
*/
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author lisanhu-v570
*/
@WebServlet(name = "Test", urlPatterns = {"/Test"})
public class Test extends HttpServlet {
/**
* Processes requests for both HTTP
* <code>GET</code> and
* <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
String str=request.getParameter("product");
System.out.println(str);
out.println(str);
} finally {
out.close();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP
* <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP
* <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
List fileItems = upload.parseRequest(request);// 表单中的所有二进制数据
Iterator iter = fileItems.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (!item.isFormField()) {
//文件流，把文件保存到服务器，代码就不贴了，你懂的
}else{
//非文件流
String value=item.getString();
value = new String(value.getBytes("ISO-8859-1"),"UTF-8");// 这行代码根据服务器的编码格式来定
}
