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私はspring mvcを学んでおり、spring mvcのテキストフィールドの下に検証エラーメッセージを表示することに固執しています。
ここにコントローラがあります。 updateUser（）メソッドでは、検証エラーをコード化します。spring mvcの検証エラーを表示できません
@Controller
public class ReportsController {
@Autowired
private ReportsDAO reportsDAO;
@Autowired
MyValidationUtils myValidationUtils;
public void setReportsDAO(ReportsDAO reportsDAO) {
this.reportsDAO = reportsDAO;
}
@RequestMapping(value="/reports",method=RequestMethod.GET)
public ModelAndView report(){
List<User> userList=reportsDAO.showAll();
ModelAndView modelAndView=new ModelAndView();
modelAndView.setViewName("Reports");
modelAndView.addObject("userList", userList);
modelAndView.addObject("User", new User());
return modelAndView;
}
@RequestMapping(value="/update/{id}", method=RequestMethod.GET)
public ModelAndView reportUpdate(@PathVariable("id") String id){
User user=reportsDAO.showByUCode(id);
List<User> userList=reportsDAO.showAll();
ModelAndView modelAndView=new ModelAndView();
modelAndView.setViewName("Reports");
modelAndView.addObject("userList", userList);
modelAndView.addObject("User", user);
if(user!=null){
modelAndView.addObject("editUser", user);
}
return modelAndView;
}
@RequestMapping(value="/delete/{id}", method=RequestMethod.GET)
public ModelAndView reportDelete(@PathVariable("id") String id){
int result=reportsDAO.deleteByID(id);
ModelAndView modelAndView=new ModelAndView();
modelAndView.setViewName("redirect:/reports");
return modelAndView;
}
@InitBinder
protected void initBinder(WebDataBinder binder) {
binder.setValidator(myValidationUtils);
}
@RequestMapping(value="/reportUpdate",method=RequestMethod.POST)
public ModelAndView updateUser(@ModelAttribute @Validated User user,BindingResult results,RedirectAttributes redirectAttributes){
ModelAndView modelAndView=new ModelAndView();
if(results.hasErrors()){
modelAndView.setViewName("Reports");
modelAndView.addObject("User", user);
results.rejectValue("name", "Name cannot be empty.");
return modelAndView;
}
if(user!=null){
int result=reportsDAO.updateByCode(user);
if(result!=-1){
modelAndView.setViewName("redirect:/reports");
}else{
modelAndView.setViewName("Reports");
modelAndView.addObject("message", "Unable to edit, Please try again.");
}
}else{
modelAndView.setViewName("Reports");
modelAndView.addObject("message", "Unable to edit, Please try again.");
}
return modelAndView;
}
}
ここはjsp形式です。
<form:form action="/ORMWebApp/reportUpdate" modelAttribute="User"
method="post" class="form-style-9">
<ul>
<li><%-- <form:label path="ucode">UCODE</form:label> --%> <form:input type="hidden" path="ucode"
class="field-style field-full align-none"
placeholder="UCode" value="${editUser.ucode}" /> <form:errors
path="ucode" class="field-style field-full align-none"></form:errors></li>
<li>
<spring:bind path="name">
<form:label path="name">NAME</form:label> <form:input type="text" path="name"
class="field-style field-full align-none"
placeholder="Name" value="${editUser.name}" /> <form:errors
path="name" class="field-style field-full align-none"></form:errors></spring:bind></li>
<li>
<spring:bind path="email">
<form:label path="email">EMAIL</form:label> <form:input type="email" path="email"
class="field-style field-full align-none"
placeholder="Email" value="${editUser.email}" /> <form:errors
path="email" class="field-style field-full align-none"></form:errors></spring:bind></li>
<li>
<spring:bind path="address">
<form:label path="address">ADDRESS</form:label> <form:input type="text"
path="address"
class="field-style field-full align-none" placeholder="Address"
value="${editUser.address}" /> <form:errors path="address"
class="field-style field-full align-none"></form:errors></spring:bind></li>
<li>
<spring:bind path="password">
<form:label path="password">PASSWORD</form:label> <form:input type="password"
path="password"
class="field-style field-full align-none" placeholder="Password"
value="${editUser.password}" /> <form:errors path="password"
class="field-style field-full align-none"></form:errors></spring:bind></li>
<li>
<spring:bind path="about">
<form:label path="about">ABOUT</form:label> <form:textarea path="about"
class="field-style" placeholder="About" ></form:textarea>
<form:errors path="about"
class="field-style field-full align-none"></form:errors></spring:bind></li>
<li><input type="submit" value="UPDATE" /></li>
</ul>
</form:form>
ここに検証ユーティリティクラスがあります。
public class MyValidationUtils implements Validator{
@Override
public boolean supports(Class<?> arg0) {
return User.class.equals(arg0);
}
@Override
public void validate(Object target, Errors errors) {
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", "NotNull.user.name", "Name cannot be blank.");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "address", "NotNull.user.address", "Address cannot be blank.");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "email", "NotNull.user.email", "email cannot be blank.");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "password", "NotNull.user.password", "password cannot be blank.");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "about", "NotNull.user.about", "About cannot be blank.");
}
}
フォームに妥当性検査エラーを返すために、これが欠けています。前もって感謝します。