【发布时间】：2018-07-20 15:56:10
【问题描述】：
@Controller
public class UsersController
{
@Autowired
UsersService userServices;
@RequestMapping(value="/page", method = RequestMethod.GET) /* whenever the client gives the url request "/page" it will run this method and shows the users.jsp page to the client */
public ModelAndView getuserPage(){
ModelAndView view =new ModelAndView("users");
return view;
}
@RequestMapping(value="register" ,method = RequestMethod.POST )// whenever the client gives the url request "users/register" it will run this method and shows the users.jsp page to the client //
public ModelAndView Registeruser(@RequestParam("user_name") String user_name, @RequestParam("user_contact") int user_contact,@RequestParam("user_email") String user_email, @RequestParam("user_password") String user_password)
{
Users usersobj=new Users(user_name, user_contact, user_email, user_password);
ModelAndView modelview=new ModelAndView();
if(userServices.saveOrUpdate(usersobj))
{
modelview.setViewName("users");
return modelview;
}
else
{
modelview.setViewName("users");
return modelview;
}
}
}
/*
@ModelAttribute("users_obj")
public Users constructUser() {
return new Users();
}
@RequestMapping(value="/register.html" ,method = RequestMethod.POST )// whenever the client gives the url request "users/register" it will run this method and shows the users.jsp page to the client //
public ModelAndView Registeruser(@ModelAttribute("users_obj") Users users_obj)
{
ModelAndView modelview=new ModelAndView();
if(userServices.saveOrUpdate(users_obj))
{
modelview.setViewName("users");
return modelview;
}
modelview.setViewName("users");
return modelview;
}
}<body>
<div id="login-form">
<!-- gives the toggle effect between login and register -->
<input type="radio" checked id="login" name="switch" class="hide">
<input type="radio" id="signup" name="switch" class="hide">
<!-- bootstrap icons that does not require download or install-->
<div>
<ul class="form-header">
<li><label for="login"><i class="fa fa-unlink"></i> LOGIN</label></li>
<li><label for="signup"><i class="fa fa-credit-card"></i> REGISTER</label></li>
</ul>
</div>
<div class="section-out">
<section class="login-section">
<div class="login">
<form action=""> <!-- on login i have to put the url of the backend class to handle it -->
<ul class="ul-list">
<li><input type="email" required class="input" placeholder="Email ID" id="email"/><span class="icon"><i class="fa fa-user-secret" style="font-size:20px"></i></span></li>
<li><input type="password" required class="input" placeholder="Password" id="pass"/><span class="icon"><i class="fa fa-lock" style="font-size:20px"></i></span></li>
<li><span class="remember"><input type="checkbox" id="check"> <label for="check">Remember Me</label></span><span class="remember"><a href="">Forgot Password</a></span></li><!-- on forgot password i have to put the url of the backend class to handle it -->
<li><input type="submit" value="SIGN IN" class="btn" onclick="validate()"/></li>
</ul>
</form>
</div>
</section>
<section class="signup-section">
<div class="login">
<form action="register" method="post"><!-- on registration i have to put the url of the backend class to handle it -->
<ul class="ul-list">
<li><input type="text" required class="input" placeholder="Your Name" id="R_name" name="user_name"/><span class="icon"><i class="fa fa-user" style="font-size:20px"></i></span></li>
<li><input type="number" required class="input" placeholder="Your Number (no plus or minus signs)" id="R_number" name="user_contact" pattern="('^\\d+$')" title="Must contain only numbers" required/><span class="icon"><i class="fa fa-mobile-phone" style="font-size:25px"></i></span></li>
<li><input type="email" required class="input" placeholder="Your Email" id="R_email" name="user_email"/><span class="icon"><i class="fa fa-envelope" style="font-size:15px"></i></span></li>
<li><input type="password" placeholder="Password" required class="input" id="R_pass" name="user_password" pattern="(?=.*?[0-9]).{8,}" title="Must contain at least one number and at least 8 or more characters" required/><span class="icon"><i class="fa fa-lock" style="font-size:20px" ></i></span></li>
<li><input type="password" placeholder="Retype Password" required class="input" id="Rc_pass"pattern="(?=.*?[0-9]).{8,}" title="Must contain at least one number and at least 8 or more characters" required/><span class="icon"><i class="fa fa-lock" style="font-size:20px" ></i></span></li>
<li><input type="checkbox" id="check1"> <label for="check1">I accept terms and conditions</label></li>
<li><input type="submit" value="SIGN UP" class="btn" onclick="validate2()"></li>
</ul>
</form>
</div>
</section>
</div>
</div>
</body>下面是我的控制器类和 users.jsp 文件 在 users.jsp 文件中，我有不同的表单，一种用于登录，另一种用于用户注册。 我目前正在处理注册表及其相关的控制器类并收到此错误
我也尝试过modelattribute，得到了同样的错误信息，所以尝试了@requestparam，但仍然出现同样的错误，我在这里做错了什么我有一个javascript来强制客户端不要给空参数
我有用户 pojo，saveorupdate 类的服务如下：
@Service
public class UsersServiceImpl implements UsersService{
@Autowired
UsersDao userDao;
public boolean saveOrUpdate(Users users) {
return userDao.saveOrUpdate(users);
}
请有人帮我指出这段代码有什么问题我做错了什么，我是否缺少 pom.xml 或前端控制器 xml 文件中的一些配置？我正在尝试修复过去 2 天的代码，这是我最后的希望，如果有知识的人指出我做错了什么以及如何修复此代码，我将不胜感激。
【问题讨论】：
标签： spring hibernate spring-mvc jsp