我是Spring的新手，正在尝试为我的Web门户创建RegisterController。
当我在主页上按下“注册”按钮时，它显示此错误：“ BeanResult'newUser'的BindingResult或普通目标对象都不能作为请求使用”。
我已经阅读了很多有关此主题的文章，但其中任何一个都对您有所帮助。
RegisterController.class
import com.springapp.Entity.User;
import com.springapp.Service.UserService.UserService;
import com.springapp.mvc.RegisterForm;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.servlet.http.HttpServletRequest;
import javax.validation.Valid;
@Controller
@RequestMapping(value = "/register.do")
public class RegisterController {
//Log4j
private static final Logger logger = Logger.getLogger(RegisterController.class);
@Qualifier("userServiceImpl")
@Autowired
private UserService userService;
private void putNewUserForm(ModelMap model) {
RegisterForm newUser = new RegisterForm();
model.addAttribute("newUser", newUser);
}
@RequestMapping(method = RequestMethod.GET)
public String register(ModelMap model) {
putNewUserForm(model);
return "register";
}
@RequestMapping(method = RequestMethod.POST)
public String processRegister(@ModelAttribute("newUser")
@Valid final RegisterForm newUser, final BindingResult result,
Model model, HttpServletRequest request) {
if (result.hasErrors()) {
logger.debug("result has errors!");
return "register";
}
if (createUser(newUser, model)) {
return "register";
}
return "welcome";
}
private boolean createUser(RegisterForm newUser, Model model) {
User user = newUser.getUser();
userService.insertUser(user);
return false;
}
}
Register.jsp
我试图设置commandName =“ newUser”，但没有区别。
<DIV class="registration_block">
<sf:form method="POST" modelAttribute="newUser" action="${app}/register.do">
<sf:label path="login"><strong>Enter Login:</strong></sf:label>
<sf:input path="login" type="text" size="20"/><br>
<span class="error"><form:errors path="login"/></span>
<br>
.........
<input type="SUBMIT" name="SUBMIT" value="Register"/>
</sf:form>
RegisterForm.class
import com.springapp.Entity.User;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotEmpty;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
import java.sql.Timestamp;
public class RegisterForm {
private static final Log logger = LogFactory.getLog(RegisterForm.class);
private Integer userId;
@NotEmpty
@Size(min = 2, max = 25)
@Pattern(regexp = "^([a-zA-Z0-9_-])+$")
private String login;
@NotEmpty
@Size(min = 2, max = 25)
@Pattern(regexp = "^([a-zA-Z])+$")
private String name;
@NotEmpty
@Size(min = 2, max = 25)
@Pattern(regexp = "^([a-zA-Z0-9_-])+$")
private String password;
@NotEmpty
@Size(min = 2, max = 25)
private String passwordConfirm;
@NotEmpty
@Email
@Pattern(regexp = "^([a-zA-Z0-9_\\.\\-+])+@(([a-zA-Z0-9-])+\\.)+([a-zA-Z0-9]{2,4})+$")
private String email;
@NotEmpty
@Email
private String emailConfirm;
private Timestamp regDate;
private String role;
public RegisterForm() {
}
public User getUser() {
User user = new User();
user.setUserId(userId);
logger.trace("set user 'login'" + userId);
user.setLogin(login);
logger.trace("set user 'email'" + login);
user.setEmail(email);
logger.trace("set user 'firstName'" + email);
user.setName(name);
logger.trace("set user 'password'" + name);
user.setPassword(password);
logger.trace("set user 'password'" + password);
user.setRegDate(regDate);
logger.trace("set user regDate'" + regDate);
return user;
}
public void setUser(User user) {
logger.trace("Constructor " + user);
this.userId = user.getUserId();
logger.trace("Get 'id' " + getUserId());
this.login = user.getLogin();
logger.trace("Get 'login' " + user.getLogin());
this.password = user.getPassword();
logger.trace("Get 'password' " + user.getPassword());
this.name = user.getName();
logger.trace("get 'Name'" + name);
this.email = user.getEmail();
logger.trace("Get 'email' " + user.getEmail());
this.regDate = user.getRegDate();
logger.trace("Get 'regDate' " + user.getRegDate());
}
//Getters and Setters....
}
MainController.class
import com.springapp.Service.UserService.UserService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
@Controller
@RequestMapping("/")
public class MainController {
private static final Log logger = LogFactory.getLog(MainController.class);
@Qualifier("userServiceImpl")
@Autowired
private UserService userService;
@RequestMapping(value = "/", method = RequestMethod.GET)
public String showIndexPage() {
return "login";
}
@RequestMapping(value = "/login")
public String showLoginPage() {
return "login";
}
@RequestMapping(value = "/welcome")
public String userWelcomePage() {
return "welcome";
}
@RequestMapping(value = "/viewall", method = RequestMethod.GET)
private ModelAndView listUsers(ModelAndView model) {
return model.addObject("members", userService.getAllUsers());
}
@RequestMapping("delete")
public ModelAndView deleteUser(@RequestParam("userId") Integer userId) {
ModelAndView mav = new ModelAndView("redirect:/viewall");
userService.deleteUser(userId);
return mav;
}
@RequestMapping(value = "/edit", method = RequestMethod.GET)
public String userEdit() {
return "adminUserUpdate";
}
@RequestMapping(value = "/register", method = RequestMethod.GET)
private ModelAndView registerUser(ModelAndView model) {
return model.addObject("register");
}
}
最佳答案
好吧，我已经解决了这个问题。它在RequestMapping中。
这是有效的代码。尚不完美，但它显示RegisterPage并允许提交。
import com.springapp.Entity.User;
import com.springapp.Service.RoleService.RoleService;
import com.springapp.Service.UserService.UserService;
import com.springapp.mvc.RegisterForm;
import com.springapp.mvc.UserValidator;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.validation.Valid;
@Controller
public class RegisterController {
//Log4j
private static final Logger logger = Logger.getLogger(RegisterController.class);
@Qualifier("userServiceImpl")
@Autowired
private UserService userService;
@Qualifier("roleServiceImpl")
@Autowired
private RoleService roleService;
private void putNewUserForm(ModelAndView model) {
RegisterForm newUser = new RegisterForm();
model.addObject("newUser", newUser);
}
@RequestMapping(value = "/register", method = RequestMethod.GET)
public String register(ModelMap model) {
model.addAttribute("newUser", new RegisterForm());
return "register";
}
@RequestMapping(value = "/register.do", method = RequestMethod.POST)
public String sayHello(RegisterForm newUser, Model model) {
model.addAttribute("newUser", newUser);
if (createUser(newUser, model)) {
return "register";
}
return "welcome";
}
private boolean createUser(RegisterForm newUser, Model modelAndView) {
User user = newUser.getUser();
user.setRole(roleService.findByName(newUser.getRole()));
userService.insertUser(user);
return false;
}
关于java - BeanResult'newUser'的BindingResult和普通目标对象都不能用作请求属性，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/23913646/