乱码解决方案：

　　　代码详解：

1 package com.bjpowernode.javaweb.servlet; 2  3 import java.io.IOException; 4  5 import javax.servlet.ServletException; 6 import javax.servlet.http.HttpServlet; 7 import javax.servlet.http.HttpServletRequest; 8 import javax.servlet.http.HttpServletResponse; 9 10 public class SaveDeptServlet extends HttpServlet {11 12     private static final long serialVersionUID = 1L;13 14     15     16     @Override17     protected void doGet(HttpServletRequest request, HttpServletResponse response)18             throws ServletException, IOException {19         //Tomcat配置文件中的URIEncoding修改后，doGet方法就已经解决了编码问题20         String dname = request.getParameter("dname");21         System.out.println(dname);22     }23 24     @Override25     protected void doPost(HttpServletRequest request, HttpServletResponse response)26             throws ServletException, IOException {27         28         /*29         String dname = request.getParameter("dname");30         31         //第一种解决方式：万能解决方案，post和get都可以使用32         byte[] bytes = dname.getBytes("ISO-8859-1");  //解码33         dname = new String(bytes, "UTF-8");  //编码方式需要同浏览器的的编码方式一致34         System.out.println(dname);35         */36         37         //第二种解决方案：调用request的setCharacterEncoding方法，但是这种方式只适合POST请求，只对请求体编码38         //告诉Tomcat服务器，请求体中的数据采用UTF-8的方式进行编码39         request.setCharacterEncoding("UTF-8");40         String dname = request.getParameter("dname");41         System.out.println(dname);42     }43 }