//以post方式提交表单
public class RequestDemo extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//请求数据的中文乱码问题
request.setCharacterEncoding("UTF-8");//客户端网页我们控制为UTF-8
String username = request.getParameter("username");
//获取数据正常，输出数据时可以查阅不同码表
response.setCharacterEncoding("gb2312");//通知服务器发送数据时查阅的码表
response.setContentType("text/html;charset=gb2312");//通知浏览器以何种码表打开
PrintWriter out = response.getWriter();
out.write(username);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
//以get方式提交表单
public class RequestDemo extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//请求数据的中文乱码问题
request.setCharacterEncoding("UTF-8");//以get方式提交数据时，request设置编码无效。即使设置了UTF-8还是会去查ISO8859-1
String username = request.getParameter("username");
System.out.println(username);
byte source [] = username.getBytes("iso8859-1"); //就是用这两句代码解决的
username = new String (source,"UTF-8");
System.out.println(username);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
}