0
Ich habe eine einfache Webanwendung mit SpringMVC und Hibernate erstellt. Alles funktioniert gut, sind meine Mitarbeiter-Datenbank hinzugefügt (MySQL), aber Seite zeigen nicht die Liste von ihnen:Spring MVC Hibernate Anwendung loadnig Datenbank Tabelle
auch nicht Logger keine Ausgabe Meldung, wenn ich hinzufüge, das Objekt, wenn es zeigen sollte so etwas wie: "Mitarbeiter erfolgreich hinzufügen, Mitarbeiterdetails: ..."
Hier ist die Seite:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%@ page session="false" %>
<html>
<head>
<title>Employee Page</title>
<style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;border-color:#ccc;}
.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#ccc;color:#333;background-color:#fff;}
.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#ccc;color:#333;background-color:#f0f0f0;}
.tg .tg-4eph{background-color:#f9f9f9}
</style>
</head>
<body>
<h1>
Add a Employee
</h1>
<c:url var="addAction" value="/employee/add" ></c:url>
<form:form action="${addAction}" commandName="employee">
<table>
<c:if test="${!empty employee.name}">
<tr>
<td>
<form:label path="id">
<spring:message text="ID"/>
</form:label>
</td>
<td>
<form:input path="id" readonly="true" size="8" disabled="true" />
<form:hidden path="id" />
</td>
</tr>
</c:if>
<tr>
<td>
<form:label path="name">
<spring:message text="Name"/>
</form:label>
</td>
<td>
<form:input path="name" />
</td>
</tr>
<tr>
<td colspan="2">
<c:if test="${!empty employee.name}">
<input type="submit"
value="<spring:message text="Edit Employee"/>" />
</c:if>
<c:if test="${empty employee.name}">
<input type="submit"
value="<spring:message text="Add Employee"/>" />
</c:if>
</td>
</tr>
</table>
</form:form>
<br>
<h3>List of Employees</h3>
<c:if test="${!empty listEmployees}">
<table class="tg">
<tr>
<th width="80">Employee ID</th>
<th width="120">Employee Name</th>
<th width="60">Edit</th>
<th width="60">Delete</th>
</tr>
<c:forEach items="${listEmployee}" var="employee">
<tr>
<td>${employee.id}</td>
<td>${employee.name}</td>
<td><a href="<c:url value='/edit/${employee.id}' />" >Edit</a></td>
<td><a href="<c:url value='/remove/${employee.id}' />" >Delete</a></td>
</tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
@Qualifier(value = "employeeDAO")
public class EmployeeDAOImpl implements EmployeeDAO {
private static final Logger logger = LoggerFactory.getLogger(EmployeeDAOImpl.class);
private SessionFactory sessionFactory;
public void setSessionFactory(SessionFactory sf){
this.sessionFactory = sf;
}
@Override
public void addEmployee(Employee e) {
Session session = this.sessionFactory.getCurrentSession();
session.persist(e);
logger.info("Employee saved successfully, Employee details: " + e);
}
@Override
public void updateEmployee(Employee e) {
Session session = this.sessionFactory.getCurrentSession();
session.update(e);
logger.info("Employee updated successfully, Employee details: " + e);
}
@SuppressWarnings("uncheked")
@Override
public List<Employee> listEmployee() {
Session session = this.sessionFactory.getCurrentSession();
List<Employee> employeeList = session.createQuery("FROM Employee").list();
for (Employee e: employeeList){
logger.info("Employee List::" + e);
}
return employeeList;
}
@Override
public Employee getEmployeeById(int id) {
Session session = this.sessionFactory.getCurrentSession();
Employee e = (Employee) session.load(Employee.class, new Integer(id));
logger.info("Employee loaded successfully, Employee details: " + e);
return null;
}
@Override
public void removeEmployee(int id) {
Session session = this.sessionFactory.getCurrentSession();
Employee e = (Employee) session.load(Employee.class, new Integer(id));
if(e != null){
session.delete(e);
}
logger.info("Employee delete successfully, Employee details: " + e);
}
}
Meine Service-Klasse:
@Service
@Qualifier(value = "employeeService")
public class EmployeeServiceImpl implements EmployeeService{
public EmployeeServiceImpl() {
}
private EmployeeDAO employeeDAO;
public EmployeeServiceImpl(EmployeeDAO employeeDAO) {
this.employeeDAO = employeeDAO;
}
@Override
@Transactional
public void addEmployee(Employee e) {
this.employeeDAO.addEmployee(e);
}
@Override
@Transactional
public void updateEmployee(Employee e) {
this.employeeDAO.updateEmployee(e);
}
@Override
@Transactional
public List<Employee> listEmployee() {
return this.employeeDAO.listEmployee();
}
@Override
@Transactional
public Employee getEmployeeById(int id) {
return this.employeeDAO.getEmployeeById(id);
}
@Override
@Transactional
public void removeEmployee(int id) {
this.employeeDAO.removeEmployee(id);
}
public void setEmployeeDAO(EmployeeDAOImpl employeeDAO) {
this.employeeDAO = employeeDAO;
}
}
Hier erstelle ich die Abbildung:
@Entity
@Table(name = "Employee")
public class Employee {
@Column(name = "Name")
private String name;
@Id
@Column(name = "Employee ID")
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int employeeID;
public Employee(String name) {
this.name = name;
}
public Employee() {
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getEmployeeID() {
return employeeID;
}
public void setEmployeeID(int employeeID) {
this.employeeID = employeeID;
}
@Override
public String toString() {
return "Employee{" +
"name='" + name + '\'' +
", employeeID=" + employeeID +
'}';
}
}
Controller-Klasse:
@Controller
public class EmployeeController {
private EmployeeService employeeService;
@Autowired(required = true)
@Qualifier("employeeService")
public void setEmployeeService(EmployeeService employeeService) {
this.employeeService = employeeService;
}
@RequestMapping(value = "/employee", method = RequestMethod.GET)
public String employeeList(Model model) {
model.addAttribute("employee", new Employee());
model.addAttribute("listEmployee", this.employeeService.listEmployee());
return "employee";
}
//For add and update person both
@RequestMapping(value = "/employee/add", method = RequestMethod.GET)
public String addEmployee(@ModelAttribute("person") Employee e){
if (e.getEmployeeID() == 0){
//new employee, add it
this.employeeService.addEmployee(e);
}else {
//existing employee, call update
this.employeeService.updateEmployee(e);
}
return "redirect:/employee";
}
@RequestMapping(value = "employees/remove/{id}")
public String removeEmployee(@PathVariable("id") int id){
this.employeeService.removeEmployee(id);
return "redirect:/employees";
}
@RequestMapping(value = "/employees/edit{id}")
public String editEmployee(@PathVariable("id") int id, Model model){
model.addAttribute("employee", this.employeeService.getEmployeeById(id));
model.addAttribute("listEmployees", this.employeeService.listEmployee());
return "employee";
}
}