只需要在Service加入request.setCharacterEncoding("utf-8");这句话
具体如下
@WebServlet("/register.do")
public class UserRegister extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
*/
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String login_name=request.getParameter("login_name");
String password=request.getParameter("password");
String email=request.getParameter("email");
........................