spring-mvc - 多个JSP表单中的Spring模型属性没有会话
问题描述
我的要求：我有一个注册页面，我在其中获取用户信息并提交表单。提交时，我验证用户信息并显示确认页面，其中包含在上一页中输入的相同详细信息，并在确认页面中有提交按钮。在提交确认时，我需要保留用户数据。
面临的困难：我成功地能够在注册表单控制器中获取用户信息，并能够将模型属性转发到确认页面。现在，如果我在标签属性中显示内容，那么在提交确认控制器时会获取用户对象的新实例，因此我不得不将属性设置为文本字段，并启用编辑以在确认控制器中获取模型属性。
下面是我的代码
//Registration Controller
@RequestMapping("/register")
public ModelAndView processRegistration(@Valid @ModelAttribute("regUser")User registrationUser, BindingResult result,
@RequestParam(value="name") String name){
ModelAndView modelAndView = new ModelAndView();
if(result.hasErrors())
{
LOG.debug("Error Occured While Registration : "+result);
modelAndView.setViewName("RegisterationPage");
modelAndView.addObject("name",name);
modelAndView.addObject("regUser",new User());
return modelAndView;
}
LOG.debug("Process Registration : "+registrationUser.getName());
modelAndView.setViewName("ConfirmRegistration");
Utils.checkUser(registrationUser);
modelAndView.addObject("regUser",registrationUser);
return modelAndView;
}
//Confirmation Controller
@RequestMapping("/confirmRegistration")
public ModelAndView confirmRegistration( @ModelAttribute("regUser") User registrationUser){
LOG.debug("Confirm User registration User :"+registrationUser);
ModelAndView modelAndView = new ModelAndView();
if(null == registrationUser.getName() || registrationUser.getName().isEmpty()){
modelAndView.setViewName("ConnectionInterupt");
modelAndView.addObject("message","Registration Details Incomplete");
return modelAndView;
}
registrationUser = logic.registerUser(registrationUser);
modelAndView.addObject("title", "Registration Success");
modelAndView.addObject("message", "Registration is success with User Id :"+registrationUser.getUserId());
modelAndView.setViewName("Success");
return modelAndView;
}
下面是我的 JSP：
<!-- Registration JSP -->
<form:form action="register" method="post" commandName="regUser" class="form-horizontal">
<div class="row">
<div class="form-group col-md-12">
<h2>${name}Registration Form</h2>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="name">User Name</label>
<div class="col-md-7">
<form:input path="name" />
<div class="has-error">
<form:errors path="name" class="help-inline" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="designation">Designation</label>
<div class="col-md-7">
<form:input path="designation" />
<div class="has-error">
<form:errors path="designation" class="help-inline" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="email">Email</label>
<div class="col-md-7">
<form:input path="email" />
<div class="has-error">
<form:errors path="email" class="help-inline" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="dob">Date Of Birth(mm/dd/yyyy)</label>
<div class="col-md-7">
<form:input path="dob" />
<div class="has-error">
<form:errors path="dob" class="help-inline" />
</div>
</div>
</div>
</div>
<h2>Address</h2>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.addressType">Address Type</label>
<div class="col-md-7">
<form:select path="address.addressType">
<form:options items= "${addressTypes}"/>
</form:select>
<div class="has-error">
<form:errors path="address.addressType" class="help-inline" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.street">Street</label>
<div class="col-md-7">
<form:input path="address.street" />
<div class="has-error">
<form:errors path="address.street" class="help-inline" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.city">City</label>
<div class="col-md-7">
<form:input path="address.city" />
<div class="has-error">
<form:errors path="address.city" class="help-inline" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.state">State</label>
<div class="col-md-7">
<form:input path="address.state" />
<div class="has-error">
<form:errors path="address.state" class="help-inline" />
</div>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.country">Country</label>
<div class="col-md-7">
<form:input path="address.country" />
<div class="has-error">
<form:errors path="address.country" class="help-inline" />
</div>
</div>
</div>
</div>
<input align="center" type="submit" value="Register" />
</form:form>
<!-- Confirmation JSP -->
<form:form action="confirmRegistration" method="post" commandName="regUser" class="form-horizontal">
<div class="row">
<div class="form-group col-md-12">
<h2>Confirm Registration</h2>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="name">User Name</label>
<div class="col-md-7">
<form:input path="name" value="${regUser.name}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="age">Age</label>
<div class="col-md-7">
<label class="col-md-3 control-lable">${regUser.age}</label>
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="designation">Profession</label>
<div class="col-md-7">
<form:input path="designation" value="${regUser.designation}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="email">Email</label>
<div class="col-md-7">
<form:input path="email" value="${regUser.email}"/> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="email">Date Of Birth</label>
<div class="col-md-7">
<form:input path="dob" value="${regUser.dob}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<h4>Address Details</h4>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.addressType">Address Type</label>
<div class="col-md-7">
<form:input path="address.addressType" value="${regUser.address.addressType}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.street">Street</label> <!-- Needs this value attribute as <Label> and also persist value -->
<div class="col-md-7">
<form:input path="address.street" value="${regUser.address.street}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.street">City</label>
<div class="col-md-7">
<form:input path="address.city" value="${regUser.address.city}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.state">State</label>
<div class="col-md-7">
<form:input path="address.state" value="${regUser.address.state}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<div class="row">
<div class="form-group col-md-12">
<label class="col-md-3 control-lable" for="address.country">Country</label>
<div class="col-md-7">
<form:input path="address.country" value="${regUser.address.country}" /> <!-- Needs this value attribute as <Label> and also persist value -->
</div>
</div>
</div>
<input align="center" type="submit" value="Confirm" />
</form:form>
解决方案
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