运行servlet 出现乱码了？

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;


public class webexampleservlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;chatset=utf-8");
doPost(request,response);
}

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

response.setContentType("text/html;chatset=utf-8");
PrintWriter out = response.getWriter();
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>");
request.setCharacterEncoding("utf-8");
out.println("名字："+request.getParameter("name")+"<br>");
out.println("邮箱："+request.getParameter("email")+"<br>");
out.println("年龄："+request.getParameter("age")+"<br>");
out.println("编程时间："+request.getParameter("time")+"<br>");
String system[]=request.getParameterValues("system");
out.println("操作系统");
for(int i=0;i<system.length;i++)
out.println("<li>"+system[i]+"</li>");
out.println("<br>");
String lanager[]=request.getParameterValues("lanager");
out.println("操作语言");
for(int i=0;i<lanager.length;i++)
out.println("<li>"+lanager[i]+"</li>");
out.println("<br>");
out.println("留言："+request.getParameter("code")+"<br>");
out.println("我");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}

}
运行结果是：？？？？？