解决HTTP会话乱码问题-优快云博客

本文介绍了一种解决HTTP会话中字符乱码的方法，通过编码和解码操作确保了从会话中获取的数据正确显示。具体实现包括设置响应的内容类型为UTF-8，并从会话中获取字符串数据进行编码转换。

package com.chenchao.session;

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 javax.servlet.http.HttpSession;

public class ServletDemo2 extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=utf-8");
//request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
HttpSession session=request.getSession();
String value=(String) session.getAttribute("name");

byte[ ] arr=value.getBytes("ISO-8859-1");
String ss=new String(arr,"utf-8");

out.println(ss);
out.println(session.getId());
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

//doGet(request,response);
}

}

关于乱码的问题：解决的方法是，在编码，在解码。