Spring MVC Errors are not shown to user

Spring MVC Errors are not shown to user - java

I am trying to learn spring MVC. I have a User Registration form which has some validations to be applied. I have written a controller for it and used javax validation annotations on the model class i.e. UserBo.
I have used Spring MVC tag to show any errors found by #Valid annotation. However, the errors are not visible on screen.
Following are the files in my setup.
The Model: UserBO
package com.shailesh.beans;
import javax.validation.constraints.NotNull;
public class UserBO {
public enum MaritalStatus {
SINGLE, MARRIED
}
#Override
public String toString() {
return "UserBO [firstName=" + firstName + ", lastName=" + lastName
+ ", id=" + id + ", phone=" + phone + ", maritalStatus="
+ maritalStatus + "]";
}
#NotNull(message="First Name can not be null")
private String firstName;
#NotNull
private String lastName;
#NotNull
private Long id;
#NotNull
private String phone;
#NotNull
private MaritalStatus maritalStatus;
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public MaritalStatus getMaritalStatus() {
return maritalStatus;
}
public void setMaritalStatus(MaritalStatus maritalStatus) {
this.maritalStatus = maritalStatus;
}
}
The Controller : AllPathController
package com.shailesh.controller;
import javax.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
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 com.shailesh.beans.UserBO;
#Controller
public class AllPathController {
#RequestMapping(value="/register", method=RequestMethod.GET)
public String register(Model model) {
model.addAttribute("userBo", new UserBO());
return "registerform";
}
#RequestMapping(value="/register", method=RequestMethod.POST)
public String register(#Valid #ModelAttribute("userBo") UserBO userBo, BindingResult result, Model model) {
if(result.hasErrors()) {
System.out.println("Input has some errors :"+result.toString());
//model.addAttribute("userBo", userBo);
return "registerform";
}
System.out.println("Input user details :" +userBo);
return "helloboss";
}
#RequestMapping(value="/homepage", method=RequestMethod.GET)
public String show() {
return "homepage";
}
#RequestMapping(value="/helloboss.do", method=RequestMethod.GET)
public String show2() {
System.out.println("get");
return "helloboss";
}
#RequestMapping(value="/helloboss.do", method=RequestMethod.POST)
public String show3() {
System.out.println("post");
return "hellobosspost";
}
}
The Spring context.xml file :
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd ">
<mvc:annotation-driven />
<!-- <context:component-scan base-package="com.shailesh.controller.*" /> -->
<bean id="allPathController" class="com.shailesh.controller.AllPathController" />
<bean id="resolver" class="org.springframework.web.servlet.view.ResourceBundleViewResolver">
<property name="basename" value="views" />
</bean>
</beans>
And the very own registerform.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%# taglib uri="http://www.springframework.org/tags/form" prefix="sf"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<style type="text/css">
.error {
color: red;
}
</style>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h2>Registration Form</h2>
<sf:form method="POST" commandName="userBo">
First Name : <sf:input path="firstName" />
<br />
<sf:errors path="firstName" element="div"/>
Last Name : <sf:input path="lastName" />
<br />
<sf:errors path="lastName" />
Phone : <sf:input path="phone" />
<br />
<sf:errors path="phone" />
Marital Status :
<sf:select path="maritalStatus">
<sf:options path="maritalStatus" />
</sf:select>
<sf:errors path="maritalStatus" />
<input type="submit" value="Register" />
</sf:form>
</body>
</html>
My observation is, when i give path value for as "*", it works. However, when i use some specific value ex. firstName , it doesn't show any errors. I tried debugging in this case. I can see the errors being populated inside BindingResult but not shown on UI.
Any help is appeciated. Thanks.

Related

Spring MVC :how a form transfer an object to Controller?? Always 400 error

When i try to access http://localhost:8080/XX/articles/addArticle
and submit the form, there is always a "400 BAD REQUEST" error.
i've tried to look up for the reason, all i got is that object transfered from the form is not as same type as my model(, which is an Article object? here). However, i don't think i really get it..
All codes are here, the config is all good.
Here are 2 models:
Article.java
#Entity
#Table(name="article_inf")
public class Article {
private int articleId;
private String title;
private User author;
private String content;
public Article() {
}
public Article(String title, User author, String content) {
this.title = title;
this.author = author;
this.content = content;
}
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
public int getArticleId() {
return articleId;
}
public void setArticleId(int articleId) {
this.articleId = articleId;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
#ManyToOne(targetEntity=User.class)
#JoinColumn(name="author", referencedColumnName="userId", nullable=false)
public User getAuthor() {
return author;
}
public void setAuthor(User author) {
this.author = author;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
User.java
#Entity
#Table(name="agri_user_inf")
public class User {
private int userId;
private String userName;
private String password;
private String cellPhone;
private List<Article> articles;
public User() {
articles = new ArrayList<>();
}
public User(String userName, String password, String cellPhone) {
this.userName = userName;
this.password = password;
this.cellPhone = cellPhone;
}
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getCellPhone() {
return cellPhone;
}
public void setCellPhone(String cellPhone) {
this.cellPhone = cellPhone;
}
#OneToMany(targetEntity=Article.class, mappedBy="author")
public List<Article> getArticles() {
return articles;
}
public void setArticles(List<Article> articles) {
this.articles = articles;
}
controller
ArticleController.java
#Controller
#RequestMapping("articles")
public class ArticleController {
private ArticleDao articleDao;
#Autowired
public ArticleController(ArticleDao articleDao) {
this.articleDao = articleDao;
}
#RequestMapping(value="addArticle", method=GET)
public String addArticle(ModelMap modelMap) {
List<User> authors = userDao.getAllUsers();
// add all authors
modelMap.addAttribute("authors", authors);
return "articles/addArticleForm";
}
#RequestMapping(value="addArticle", method=POST)
public String addArticle(Article article) {
articleDao.addArticle(article);
return "redirect:/articles";
}
// other code
my form addArticleForm.jsp
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%#taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form method="post">
title: <input type="text" name="title"/><br/>
author: <select name="author">
<c:forEach items="${authors}" var="author">
<option value="${author}">${author.userName}</option>
</c:forEach>
</select>
<br/>
content: <input type="text" name="content"/><br/>
<input type="submit" value="add"/>
</form>
</body>
</html>

You are violating REST principles. Always use version in your endpoint and resource name after that. Example - /api/v1/articles. After that with help of HttpMethods access your resources. Example - If you want to
1.1 add new Article , use POST request to /api/v1/articles
1.2 delete existing Article, use DELETE request to /api/v1/articles/{articleId}
1.3 get one Article, use GET request to /api/v1/articles/{articleId}
1.4 get all Articles, use GET request to /api/v1/articles
1.5 update existing Article, use PUT request to /api/v1/articles/{articleId}
Never use your Entity which is going to be persisted in DB for all layers. It`s bad practice to connect Entity with your view, instead you can use DTO.
Use #ModelAttribute annotation in your controller layer with same name as in view to handle incoming Article object. Example
public String addArticle(#ModelAttribute("article") Article article )
To add new Article first you need to create endpoint which is returning empty Article object inside of ModelMap. Then you must handle this in your front end(JSP) and for submitting this form follow step 3.
Hope this will help.

I got solution :
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%#taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form method="post">
title: <input type="text" name="title"/><br/>
author: <select name="author.userId">
<c:forEach items="${authors}" var="author">
<option value="${author.userId}">${author.userName}</option>
</c:forEach>
</select>
<br/>
content: <input type="text" name="content"/><br/>
<input type="submit" value="add"/>
</form>
</body>
</html>
change name of <select> tag from "author" to "author.userId" . That works.

Form submission with Java and Thymeleaf

I am creating my first form with Java developing with Sprint Tool Suite on my local machine. I created an index.html page with a simple form with 3 input fields. I want to have the form submit to a results.html page which just displays the values entered into the form. The issue I am having is that when I launch the application, fill in some data, and click the submit button, I get a 404 error. Also, what I noticed is that when I click on the submit button, the url box of the browser changes to localhost:8080/person. I expected to see localhost:8080/results. I thank you in advance for any assistance.
My main application class code is this:
package com.baconbuddy;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class BaconBuddyApplication {
public static void main(String[] args) {
SpringApplication.run(BaconBuddyApplication.class, args);
}
}
My index.html has the following code:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Home Page</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
</head>
<body>
<h1>Hello world!</h1>
<form action="#" th:action="#{/person}" th:object="${person}" method="post" >
<input th:field="*{firstName}" placeholder="First Name" />
<input th:field="*{lastName}" placeholder="Last Name" />
<input th:field="*{age}" placeholder="Age" />
<button >Submit</button>
</form>
</body>
</html>
My results.html has the following code:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Insert title here</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<div>
<p>First Name:
<span th:text="${person.firstName}"></span>
</p>
<br />
<p>Last Name:
<span th:text="${person.lastName}"></span>
</p>
<br />
<p>Age:
<span th:text="${person.age}"></span>
</p>
</div>
</body>
</html>
My Person.java file looks like this:
package com.baconbuddy.models;
public class Person {
private String firstName;
private String lastName;
private int age;
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
and my HomeController.java looks like this:
package com.baconbuddy.controllers;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import com.baconbuddy.models.Person;
#Controller
#RequestMapping({ "/", "/home" })
public class HomeController {
#GetMapping()
public String index(Model model) {
model.addAttribute("person", new Person());
// The string index will be looked for in src/main/resources/templates
return "index";
}
#PostMapping()
public String personSubmit(#ModelAttribute Person person) {
return "results";
}
}

You have #{/person} as your th:action in your <form> HTML, but your controller isn't mapping a method for it. The POST you have mapped right now is mapping to / and /home (inherited from your class-level #RequestMapping). Change your #PostMapping or modify your <form>, e.g.:
#PostMapping("person")
public String personSubmit(#ModelAttribute Person person) {
return "results";
}
Or update your form:
<form action="#" th:action="#{/}" th:object="${person}" method="post" >

The requested resource is not available in spring mvc

After click on AddEmployee link next page is open given below
when i click on submit the then next page opening like that
addEmployee.jsp file
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%#taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Spring MVC Form Handling</title>
</head>
<body>
<h2>Add Employee Data</h2>
<form:form method="POST" action="/save.html">
<table>
<tr>
<td><form:label path="id">Employee ID:</form:label></td>
<td><form:input path="id" value="${employee.id}" readonly="true"/></td>
</tr>
<tr>
<td><form:label path="name">Employee Name:</form:label></td>
<td><form:input path="name" value="${employee.name}"/></td>
</tr>
<tr>
<td><form:label path="age">Employee Age:</form:label></td>
<td><form:input path="age" value="${employee.age}"/></td>
</tr>
<tr>
<td><form:label path="salary">Employee Salary:</form:label></td>
<td><form:input path="salary" value="${employee.salary}"/></td>
</tr>
<tr>
<td><form:label path="address">Employee Address:</form:label></td>
<td><form:input path="address" value="${employee.address}"/></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="Submit"/></td>
</tr>
</table>
</form:form>
<c:if test="${!empty employees}">
<h2>List Employees</h2>
<table align="left" border="1">
<tr>
<th>Employee ID</th>
<th>Employee Name</th>
<th>Employee Age</th>
<th>Employee Salary</th>
<th>Employee Address</th>
<th>Actions on Row</th>
</tr>
<c:forEach items="${employees}" var="employee">
<tr>
<td><c:out value="${employee.id}"/></td>
<td><c:out value="${employee.name}"/></td>
<td><c:out value="${employee.age}"/></td>
<td><c:out value="${employee.salary}"/></td>
<td><c:out value="${employee.address}"/></td>
<td align="center">Edit | Delete</td>
</tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
employeeList.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>All Employees</title>
</head>
<body>
<h1>List Employees</h1>
<h3>Add More Employee</h3>
<c:if test="${!empty employees}">
<table align="left" border="1">
<tr>
<th>Employee ID</th>
<th>Employee Name</th>
<th>Employee Age</th>
<th>Employee Salary</th>
<th>Employee Address</th>
</tr>
<c:forEach items="${employees}" var="employee">
<tr>
<td><c:out value="${employee.id}"/></td>
<td><c:out value="${employee.name}"/></td>
<td><c:out value="${employee.age}"/></td>
<td><c:out value="${employee.salary}"/></td>
<td><c:out value="${employee.address}"/></td>
</tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
index.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>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Spring3MVC with Hibernate3 CRUD Example using Annotations</title>
</head>
<body>
<h2>Spring3MVC with Hibernate3 CRUD Example using Annotations</h2>
<h2>1. List of Employees</h2>
<h2>2. Add Employee</h2>
</body>
</html>
web.xml file
<web-app version="2.5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
spring-servlet.xml file
<beans xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:component-scan base-package="com"></context:component-scan>
<tx:annotation-driven transaction-manager="hibernateTransactionManager"></tx:annotation-driven>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView"></property>
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<bean class="org.springframework.jdbc.datasource.DriverManagerDataSource" id="dataSource">
<property name="driverClassName" value="org.postgresql.Driver"></property>
<property name="url" value="jdbc:postgresql://localhost:5433/databaseDb"></property>
<property name="username" value="postgres"></property>
<property name="password" value="postgres"></property>
</bean>
<bean class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" id="sessionFactory">
<property name="dataSource" ref="dataSource"></property>
<property name="annotatedClasses">
<list>
<value>com.model.Employee</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.current_session_context_class">thread</prop>
</props>
</property>
</bean>
<bean class="org.springframework.orm.hibernate4.HibernateTransactionManager" id="hibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
</beans>
EmployeeController class
package com.controller;
import com.bean.EmployeeBean;
import com.model.Employee;
import com.service.EmployeeService;
import com.sun.javafx.collections.MappingChange;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.propertyeditors.StringArrayPropertyEditor;
import org.springframework.stereotype.Controller;
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.servlet.ModelAndView;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import java.util.*;
/**
* Created by khan on 28/11/16.
*/
#Controller
public class EmployeeController {
#Autowired
private EmployeeService employeeService;
#RequestMapping(value = "/save", method = RequestMethod.POST)
public ModelAndView saveEmployee(#ModelAttribute("command") EmployeeBean employeeBean, BindingResult result) {
Employee employee = prepareModel(employeeBean);
employeeService.addEmployee(employee);
return new ModelAndView("redirect:/add.html");
}
#RequestMapping(value = "/employees", method = RequestMethod.GET)
public ModelAndView listEmployee() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("employees", prepareListofBean(employeeService.listEmployees()));
return new ModelAndView("employeesList", map);
}
#RequestMapping(value = "/add", method = RequestMethod.GET)
public ModelAndView addEmployee(#ModelAttribute("command") EmployeeBean employeeBean, BindingResult result) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("employees", prepareListofBean(employeeService.listEmployees()));
return new ModelAndView("addEmployee", map);
}
#RequestMapping(value = "/index", method = RequestMethod.GET)
public ModelAndView welcome() {
return new ModelAndView("index");
}
#RequestMapping(value = "/delete", method = RequestMethod.GET)
public ModelAndView editEmployee(#ModelAttribute("command") EmployeeBean employeeBean, BindingResult result) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("employee", null);
map.put("employees", prepareListofBean(employeeService.listEmployees()));
return new ModelAndView("addEmployee", map);
}
#RequestMapping(value = "/edit", method = RequestMethod.GET)
public ModelAndView deleteEmployee(#ModelAttribute("command") EmployeeBean employeeBean, BindingResult result) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("employee", prepareEmployeebean(employeeService.getEmployee(employeeBean.getId())));
map.put("employees", prepareListofBean(employeeService.listEmployees()));
return new ModelAndView("addEmployee", map);
}
private EmployeeBean prepareEmployeebean(Employee employee) {
EmployeeBean employeeBean = new EmployeeBean();
employeeBean.setAddress(employee.getEmpAddress());
employeeBean.setAge(employee.getEmpAge());
employeeBean.setSalary(employee.getEmpSalary());
employeeBean.setName(employee.getEmpName());
employeeBean.setId(employee.getEmpId());
return employeeBean;
}
private Employee prepareModel(EmployeeBean employeeBean) {
Employee employee = new Employee();
employee.setEmpAddress(employeeBean.getAddress());
employee.setEmpAge(employeeBean.getAge());
employee.setEmpName(employeeBean.getName());
employee.setEmpSalary(employeeBean.getSalary());
employee.setEmpId(null);
return employee;
}
private List<EmployeeBean> prepareListofBean(List<Employee> employees) {
List<EmployeeBean> employeeBeen = null;
if (employees != null && !employees.isEmpty()) {
employeeBeen = new ArrayList<EmployeeBean>();
EmployeeBean bean = null;
for (Employee employee : employees) {
bean = new EmployeeBean();
bean.setName(employee.getEmpName());
bean.setAge(employee.getEmpAge());
bean.setSalary(employee.getEmpSalary());
bean.setAddress(employee.getEmpAddress());
bean.setId(employee.getEmpId());
employeeBeen.add(bean);
}
}
return employeeBeen;
}
}
EmployeeService interface
package com.service;
import com.dao.EmployeeDao;
import com.model.Employee;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* Created by khan on 28/11/16.
*/
public interface EmployeeService {
public void addEmployee(Employee employee);
public List<Employee> listEmployees();
public Employee getEmployee(int empid);
public void deleteEmployee(Employee employee);
}
EmployeeServiceImpl class
package com.serviceImpl;
import com.dao.EmployeeDao;
import com.model.Employee;
import com.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
/**
* Created by khan on 28/11/16.
*/
#Service("EmployeeService")
#Transactional(propagation = Propagation.SUPPORTS, readOnly = true)
public class EmployeeServiceImpl implements EmployeeService {
#Autowired
private EmployeeDao employeeDao;
#Transactional(propagation = Propagation.REQUIRED, readOnly = false)
public void addEmployee(Employee employee) {
employeeDao.addEmployee(employee);
}
public List<Employee> listEmployees() {
return (List<Employee>) employeeDao.listEmployees();
}
public Employee getEmployee(int empid) {
return employeeDao.getEmployee(empid);
}
public void deleteEmployee(Employee employee) {
employeeDao.deleteEmployee(employee);
}
}
EmployeeDao interface
package com.dao;
import com.model.Employee;
import java.util.List;
/**
* Created by khan on 28/11/16.
*/
public interface EmployeeDao {
public List<Employee> listEmployees();
public void addEmployee(Employee employee);
public Employee getEmployee(int empid);
public void deleteEmployee(Employee employee);
}
EmployeDaoImpl class
package com.daoImpl;
import com.bean.EmployeeBean;
import com.dao.EmployeeDao;
import com.model.Employee;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
* Created by khan on 28/11/16.
*/
#Repository
public class EmployeeDaoImpl implements EmployeeDao {
#Autowired
private SessionFactory sessionFactory;
#SuppressWarnings("unchecked")
public List<Employee> listEmployees() {
Transaction transaction = sessionFactory.getCurrentSession().beginTransaction();
Criteria criteria = sessionFactory.getCurrentSession().createCriteria(Employee.class);
List<Employee> list = (List<Employee>) criteria.list();
transaction.commit();
return list;
}
public void addEmployee(Employee employee) {
Transaction transaction = sessionFactory.getCurrentSession().beginTransaction();
sessionFactory.getCurrentSession().saveOrUpdate(employee);
transaction.commit();
}
public Employee getEmployee(int empid) {
return (Employee) sessionFactory.getCurrentSession().get(Employee.class, empid);
}
public void deleteEmployee(Employee employee) {
Transaction transaction = sessionFactory.getCurrentSession().beginTransaction();
sessionFactory.getCurrentSession()
.createQuery("Delete from Employee where id=" + employee.getEmpId()).executeUpdate();
transaction.commit();
}
}
Employee class
package com.model;
import javax.persistence.*;
/**
* Created by khan on 28/11/16.
*/
#Entity
#Table(name = "Employee")
public class Employee {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "empid")
private Integer empId;
#Column(name = "empage")
private Integer empAge;
#Column(name = "empname")
private String empName;
#Column(name = "empaddress")
private String empAddress;
#Column(name = "empsalary")
private Long empSalary;
public Integer getEmpId() {
return empId;
}
public void setEmpId(Integer empId) {
this.empId = empId;
}
public Integer getEmpAge() {
return empAge;
}
public void setEmpAge(Integer empAge) {
this.empAge = empAge;
}
public String getEmpName() {
return empName;
}
public void setEmpName(String empName) {
this.empName = empName;
}
public String getEmpAddress() {
return empAddress;
}
public void setEmpAddress(String empAddress) {
this.empAddress = empAddress;
}
public Long getEmpSalary() {
return empSalary;
}
public void setEmpSalary(Long empSalary) {
this.empSalary = empSalary;
}
}
EmployeeBean class
package com.bean;
import org.omg.CORBA.INTERNAL;
/**
* Created by khan on 28/11/16.
*/
public class EmployeeBean {
private Integer id;
private Integer age;
private String name;
private Long salary;
private String address;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Long getSalary() {
return salary;
}
public void setSalary(Long salary) {
this.salary = salary;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
Please Help me i try but not getting how to solve this.
Thanks every buddy in advance

change your form action to
<form:form action="${pageContext.request.contextPath}/save.html" method="POST">
..
</form:form>

Hibernate validator doesn't work

I'm using Hibernate validator with Hibernate and Spring, but it seems that validations don't work. When I don't enter a String or enter a String of 1 character (which is not between min=4 and max=20) is not showing any error and therefore saves in the table. What am I missing?
package dao;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
#Entity
#Table(name="etudiant")
public class Etudiant {
#Id
#Column(name="ID_ETUDIANT")
#GeneratedValue
private Long idEtudiant;
#Column(name="NOM")
#Size (min=4, max=20)
private String nom;
#Size(min=4, max=20, message="nom doit etre entre 4 et 20 svp..")
#Column(name="PRENOM")
private String prenom;
#Column(name="DATE_NAISSANCE")
#Temporal(TemporalType.DATE)
private Date dateNaissance;
#NotNull
#Column(name="EMAIL")
private String email;
public Etudiant() {
super();
}
public Long getIdEtudiant() {
return idEtudiant;
}
public void setIdEtudiant(Long idEtudiant) {
this.idEtudiant = idEtudiant;
}
public Etudiant(String nom, String prenom, Date dateNaissance, String email) {
super();
this.nom = nom;
this.prenom = prenom;
this.dateNaissance = dateNaissance;
this.email = email;
}
public String getNom() {
return nom;
}
public void setNom(String nom) {
this.nom = nom;
}
public String getPrenom() {
return prenom;
}
public void setPrenom(String prenom) {
this.prenom = prenom;
}
public Date getDateNaissance() {
return dateNaissance;
}
public void setDateNaissance(Date dateNaissance) {
this.dateNaissance = dateNaissance;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
Controller:
#RequestMapping(value="save",method=RequestMethod.POST)
public String saveetudient(Model md,
#Valid #ModelAttribute("etudiant") Etudiant et,
BindingResult res) {
if (res.hasErrors()) {
List <Etudiant> ets=service.listeEtudiants();
md.addAttribute("etudiants",ets);
return "etudiant1";
}
else {
service.addEtudiant(et);
List <Etudiant> ets=service.listeEtudiants();
md.addAttribute("etudiants",ets);
return "etudiant1";
}
}
In JSP I put this line to show errors:
<form action="save" method="post">
<table border="1" width="500" bgcolor="grey">
<tr>
<th>Nom </th>
<th>Prenom </th>
<th> Date de naissance</th>
<th>Email </th>
</tr>
<tr>
<td> <input type="text" name="nom" > </td>
<td> <input type="text" name="prenom" > </td>
<td> <input type="text" name="dateNaissance" > </td>
<td> <input type="text" name="email" > </td>
</tr>
</table> <br>
<input type="submit" value="ajouter">
<sform:errors path="etudiant.*"/>
<sform:errors path="prenom"/>
</form>
XML file configuration :
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd ">
<context:component-scan base-package="controller"/>
<mvc:annotation-driven/>
<bean class="dao.DaoEtudiantImpl" name="daoetud"></bean>
<bean class="service.EtudiantMetierImpl" name="servetud">
<property name="dao" ref="daoetud"></property>
</bean>
<mvc:resources mapping="/resources/**" location="/resources/" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
<property name="prefix">
<value>/WEB-INF/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>

Finally I found the error ,
the problem was that I didin't add hibernate-validator jar I only added files in the dist/lib/required :
classmate-1.3.1
javax.el-2.2.4
-javax.el-api-2.2.2
jboss-logging-3.3.0.Final
validation-api-1.1.0
So if that happens to someone just add : hibernate-validator-5.3.2.Final.

After spent one hour to study two validation tutorials:
Hibernate Validator Annotations Example
Spring MVC Form Validation Annotation Example
I suggest you some solutions.
1) Verify hibernate validation annotation working or not
ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
Validator validator = factory.getValidator();
Set<ConstraintViolation<Etudiant>> constraintViolations = validator.validate(etudiant);
2) You can create custom validator, for example EtudiantValidator, then validate manually like below:
#RequestMapping(value="save",method=RequestMethod.POST)
public String saveetudient(Model md,#ModelAttribute("etudiant") Etudiant etudiant, BindingResult res){
new EtudiantValidator().validate(etudiant, result);
...
}
However I deep into your code,I see that you have a mistake on this method:
#RequestMapping(value="save",method=RequestMethod.POST)
public String saveetudient(Model md,
#Valid #ModelAttribute("etudiant") Etudiant et,
BindingResult res)
Should change it to like below
#RequestMapping(value="save",method=RequestMethod.POST)
public String saveetudient(Model md,
#Valid #ModelAttribute("etudiant") Etudiant etudiant,
BindingResult res)
Hope this help!

Spring MVC form error

I am trying to run a project in Spring MVC. Here is the code
index.jsp
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<%#taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Welcome to Spring Web MVC project</title>
</head>
<body>
<h1>Spring 3 Register!</h1>
click
<form:form action="${pageContext.request.contextPath}/register" method="POST" modelAttribute="userForm">
<table>
<tr>
<td colspan="2" align="center">Spring MVC Form Demo - Registration</td>
</tr>
<tr>
<td>User Name</td>
<td><form:input path="username" /></td>
</tr>
<tr>
<td>Password</td>
<td><form:password path="password" /></td>
</tr>
<tr>
<td>Email</td>
<td><form:input path="email" /></td>
</tr>
<tr>
<td>BirthDate (mm/dd/yyyy)</td>
<td><form:input path="birthDate" /></td>
</tr>
<tr>
<td>Profession</td>
<td><form:select path="profession" items="${professionList}" /></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="Register" /></td>
</tr>
</table>
</form:form>
</body>
</html>
RegistrationController.java
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package RegisterInfo;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
*
* #author Harshit Shrivastava
*/
import RegisterInfo.model.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.ui.Model;
#Controller
#RequestMapping(value = "/register")
public class RegistrationController {
#RequestMapping(method = RequestMethod.GET)
public String viewRegistration(Model model)
{
User userForm = new User();
model.addAttribute("userForm", new User());
/*List<String> professionList = new ArrayList();
professionList.add("Developer");
professionList.add("Designer");
professionList.add("IT Manager");
model.put("professionList", professionList);*/
return "index";
}
#RequestMapping(method = RequestMethod.POST)
public String processRegistration(#ModelAttribute("userForm") User user, Map<String, Object> model)
{
System.out.println("Username : " + user.getUserName());
model.put("userForm", new User());
return "index";
}
}
User.java
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package RegisterInfo.model;
/**
*
* #author Harshit Shrivastava
*/
import java.util.Date;
public class User {
private String username;
private String password;
private String email;
private Date birthDate;
private String profession;
public String getUserName()
{
return username;
}
public void setUserName(String username)
{
this.username = username;
}
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
public String getEmail()
{
return email;
}
public void setEmail(String email)
{
this.email = email;
}
public Date getBirthDate()
{
return birthDate;
}
public void setBirthDate(Date birthDate)
{
this.birthDate = birthDate;
}
public String getProfession()
{
return profession;
}
public void setProfession(String profession)
{
this.profession = profession;
}
}
dispatcher-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd ">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<context:component-scan base-package="SpringRegister" />
<mvc:annotation-driven />
<!--
Most controllers will use the ControllerClassNameHandlerMapping above, but
for the index controller we are using ParameterizableViewController, so we must
define an explicit mapping for it.
-->
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="index.htm">indexController</prop>
</props>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<!--
The index controller.
-->
<bean name="indexController"
class="org.springframework.web.servlet.mvc.ParameterizableViewController"
p:viewName="index" />
</beans>
In the above program, Whenever I go to http://localhost:8080/SpringRegister/index.htm, I always gets this error
Error:
neither bindingresult nor plain target object for bean 'userForm' available as request attribute
What is wrong with the code?

When you hit the http://localhost:8080/SpringRegister/index.htm from browser, Your request is handled by ParameterizableViewController which does not set the model attribute (userForm) and forwards to index.jsp, the index.jsp's form tag expects the model attribute userForm <form:form action="${pageContext.request.contextPath}/register" method="POST" modelAttribute="userForm"> , which is not available. that why the error. To resolve this you can create your own conrtoller which handles your http://localhost:8080/SpringRegister/index.htm URL,
ModelAndView modelAndView = new ModelAndView("your view name");
model.addAttribute("userForm", new User());
configure that controller instead of class="org.springframework.web.servlet.mvc.ParameterizableViewController" in your servlet xml. Hope this helps.

You need to Change in Controller To bind userForm with Bean ----
Jsp Form --
<form:form action="userAction" modelAttribute="userForm " class="form-search" role="form">
Controller --
#RequestMapping (value = "/userAction")
public ModelAndView checkFeasibility(#ModelAttribute("userForm ")User userForm)
{
// Any Action
model.addObject("userForm",userForm);
return model;
}
In order to Bind userForm modelAttribute of form with User Bean.

We Keep Coding

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

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