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Я создал некоторую форму с весной mvc Framework, но я столкнулся с проблемой при нажатии кнопки отправки, studentName не связан с другими данными в файле AdmissionSuccess.jsp. Я не знаю, что я делаю неправильно в классе StudentNameEditor. Вызывается метод setAsText, но значение studentName не отображается в AdmissionSuccess.jsp.PropertyEditor не передает данные по умолчанию
Как я могу заставить его работать?
StudentAdmissionController
package com.stack;
import java.sql.Date;
import java.text.SimpleDateFormat;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
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.servlet.ModelAndView;
@Controller
public class StudentAdmissionController {
@InitBinder
public void iniBinder(WebDataBinder binder){
//binder.setDisallowedFields(new String[] {"studentMobile"});
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy.MM.dd");
binder.registerCustomEditor(Date.class, "studentDOB", new CustomDateEditor(dateFormat, false));
//add to handle a specific data.
binder.registerCustomEditor(String.class,"studentName", new StudentNameEditor());
}
@RequestMapping(value = "/admission.html", method = RequestMethod.GET)
public ModelAndView getAdmissionForm() {
ModelAndView model = new ModelAndView("AdmissionForm");
return model;
}
// Aded
// This method is being called by every request.
@ModelAttribute
public void addingCommonObjects(Model model1) {
model1.addAttribute("headerMessage", "University of Lübeck, Germany ");
}
@RequestMapping(value = "/submitAdmissionForm.html", method = RequestMethod.POST)
public ModelAndView submitAdmissionForm(@ModelAttribute("student1") Student student1, BindingResult result) {
if (result.hasErrors()) {
ModelAndView model = new ModelAndView("AdmissionForm");
return model;
}
ModelAndView model = new ModelAndView("AdmissionSuccess");
return model;
}
}
StudentNameEditor класс
package com.stack;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.beans.PropertyChangeListener;
import java.beans.PropertyEditor;
public class StudentNameEditor implements PropertyEditor {
/*
* (non-Javadoc) when you will submit the admission form, Spring mvc will run
* serAsText function this class before performing data binding task for
* studentName property of student.
*/
@Override
public void setAsText(String studentName) throws IllegalArgumentException {
if(studentName.contains("Mr.") || studentName.contains("Ms.")){
setValue(studentName);
}else{
studentName = "Ms." + studentName;
setValue(studentName);
}
}
@Override
public void addPropertyChangeListener(PropertyChangeListener listener) {
// TODO Auto-generated method stub
}
@Override
public String getAsText() {
// TODO Auto-generated method stub
return null;
}
@Override
public Component getCustomEditor() {
// TODO Auto-generated method stub
return null;
}
@Override
public String getJavaInitializationString() {
// TODO Auto-generated method stub
return null;
}
@Override
public String[] getTags() {
// TODO Auto-generated method stub
return null;
}
@Override
public Object getValue() {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean isPaintable() {
// TODO Auto-generated method stub
return false;
}
@Override
public void paintValue(Graphics gfx, Rectangle box) {
// TODO Auto-generated method stub
}
@Override
public void removePropertyChangeListener(PropertyChangeListener listener) {
// TODO Auto-generated method stub
}
@Override
public void setValue(Object value) {
// TODO Auto-generated method stub
}
@Override
public boolean supportsCustomEditor() {
// TODO Auto-generated method stub
return false;
}
}
AdmissionForm.jsp
<!-- Added -->
<%@taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<body>
<h1>${headerMessage}</h1>
<h1>Student admission form for Engineeering courses</h1>
<!-- Added -->
<form:errors path="student1.*" />
<form action="/FirstSpringMVCProject/submitAdmissionForm.html"
method="post">
<table>
<tr>
<td>Student's Name:</td>
<td><input type="text" name="studentName" /></td>
</tr>
<tr>
<td>Student's Hobby:</td>
<td><input type="text" name="studentHobby" /></td>
</tr>
<tr>
<td>Student's Mobile:</td>
<td><input type="text" name="studentMobile" /></td>
</tr>
<tr>
<td>Student's DOB:</td>
<td><input type="text" name="studentDOB" /></td>
</tr>
<tr>
<td>Student's Skill set:</td>
<td><select name="studentSkills" multiple>
<option value="Java Core">Java Core</option>
<option value="Spring Core">Spring Core</option>
<option value="Spring MVC">Spring MVC</option>
</select></td>
</tr>
</table>
<table>
<tr>
<td>Student's Address:</td>
</tr>
<tr>
<td>county: <input type="text" name="studentAddress.country" />
</td>
<td>city: <input type="text" name="studentAddress.city" />
</td>
<td>street: <input type="text" name="studentAddress.street" />
</td>
<td>pincode: <input type="text" name="studentAddress.pincode" />
</td>
</tr>
</table>
<input type="submit" value="Submit this form by clicking here" />
</form>
</body>
</html>
AdmissionSuccess.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<h1>${headerMessage}</h1>
<h3>STUDENT ADMISSION FROM ENGINEERING COURSES</h3>
<h2>Detials submitted by you::</h2>
<table>
<tr>
<td>Student Name:</td>
<td>${student1.studentName}</td>
</tr>
<tr>
<td>Student Hobby:</td>
<td>${student1.studentHobby}</td>
</tr>
<tr>
<td>Student Mobile:</td>
<td>${student1.studentMobile}</td>
</tr>
<tr>
<td>Student DOB:</td>
<td>${student1.studentDOB}</td>
</tr>
<tr>
<td>Student skills:</td>
<td>${student1.studentSkills}</td>
</tr>
<tr>
<td>Student Adress:</td>
<td>${student1.studentAddress.country}
${student1.studentAddress.city}
${student1.studentAddress.street}
${student1.studentAddress.pincode}</td>
</tr>
</table>
<body>
</body>
</html>
В вашем классе 'StudentNameEditor', когда вы' setValue() 'в методе метода нет, чтобы фактически установить имя Студента. Вам нужно будет добавить там код, чтобы убедиться, что при вызове 'setValue (studentName);' что имя задано правильно. –