struts配置

<package name="users" namespace="/users" extends="default">
?? ??? ?<action name="*_*" class="action.{1}Action" method="{2}">
?? ??? ??? ?<result name="input">/users/Users_login.jsp</result>
?? ??? ??? ?<result name="login_success">/users/Users_login_success.jsp</result>
?? ??? ??? ?<result name="login_failure">/users/Users_login.jsp</result>
?? ??? ??? ?<result name="logout_success">/users/Users_login.jsp</result>
?? ??? ?</action>
?? ?</package>

Action

@SkipValidation
?? ?public String login(){
?? ??? ?UsersDao udao=new UsersDaoImpl();
?? ??? ?if(udao.usersLogin(u)){
?? ??? ??? ?//在session中保存
?? ??? ??? ?session.setAttribute("loginUserName", u.getUsername());
?? ??? ??? ?return "login_success";
?? ??? ?}else
?? ??? ??? ?return "login_failure";
?? ?}

@Override
?? ?public void validate() {
?? ??? ?//用戶名不能為空
?? ??? ?if("".equals(u.getUsername())){
?? ??? ??? ?this.addFieldError("usernameError", "用戶名不能為空！");
?? ??? ?}
?? ??? ?if(u.getPassword().length()<6){
?? ??? ??? ?this.addFieldError("password", "密碼長度不能少于6位！");
?? ??? ?}
?? ?}

哪里不對了呢