servlet传汉字出现问题

设置编码为utf-8 表单提交应该就不会出乱码吧ajax就会出问题

看下你编译器设置的格式项目右击》》JAVA Editor 看下Text file eccoding 的Other 选的是不是UTF-8

Request req=upload.getRequest();
req.setCharacterEncoding("UTF-8");
String name=req.getParameter("product");
试试

先检查jsp，servlet编码格式是否统一，然后这样
request.getParameter("product");
product = new String(product.getBytes("UTF-8"));

你确定能获取汉字么，我记得这种情况会无法获取text参数的啊，结果是null为了传文件你设置了enctype="multipart/form-data"
好像这样会使上传的参数失效，即使在调试器中看到报头中添加了参数但是获取的结果也为null如果获取null的话解决方法是使用两个表单，或者重写onsubmit方法，使用Ajax先传文字参数，再传图片，总之是要用两个Servlet
如果是这种情况

结果为null 是由汉字乱码引起的。

呃……是么，英文也为null啊

只要是request请求或者请求在request作用域内 getParameter都是可以取到值的

index.html<!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>Test.java/*
* To change this template, choose Tools | 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>
}
在windows tomcat7 netbeansIDE
结果为null

req.setCharacterEncoding("UTF-8");这个方法没有定义

Quote: 引用 10 楼 lisanhu2010 的回复:

在windows tomcat7 netbeansIDE
结果为null ......
Quote:
是的，为null才算正常，原因是：
<form action="Test" method="post" enctype="multipart/form-data">
表明该表单的数据为二进制数据，二进制数据必须用流(java.io.InputStream)的方式才能接收，
request.getParameter(String param); 该方法返回的是String，接收不到流，结果为null 并非乱码引起的，你的编码貌似没什么问题，问题在于你取值的方式！
如果你用了commons-fileupload-x.jar，就好办了，请看代码：
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

                }

调试易

servlet传汉字出现问题

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