Hibernate、postgresql、spring mvcで操作を更新および削除する方法

私は、hibernateとpostgresqlとspring mvcを使用してcrud web-appを作成しようとしています。私は編集それは代わりに、更新の新しいレコードを挿入し、私はその後、を削除何も操作しますHibernate、postgresql、spring mvcで操作を更新および削除する方法

問題行います。私は十分ではありませんよと私を助けてください。

プロジェクト構造のスナップshote

1）それが追加されます私は、従業員にABC年齢25から27を編集するときもう1つのレコード新しい従業員ID従業員（abc）

は、ここで私はそれがその社員を取るが、操作を行う削除しない従業員XYZを削除するスナップshote

2）です。

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.ObjectFactory; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.beans.propertyeditors.StringArrayPropertyEditor; 
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 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) { 
     employeeService.deleteEmployee(prepareModel(employeeBean)); 
     Map<String, Object> model = new HashMap<String, Object>(); 
     model.put("employee", null); 
     model.put("employees", prepareListofBean(employeeService.listEmployees())); 
     return new ModelAndView("addEmployee", model); 
    } 

    @RequestMapping(value = "/edit", method = RequestMethod.GET) 
    public ModelAndView deleteEmployee(@ModelAttribute("command") EmployeeBean employeeBean, 
             BindingResult result) { 
     Map<String, Object> model = new HashMap<String, Object>(); 
     model.put("employee", prepareEmployeebean(employeeService.getEmployee(employeeBean.getId()))); 
     model.put("employees", prepareListofBean(employeeService.listEmployees())); 
     return new ModelAndView("addEmployee", model); 
    } 


    private EmployeeBean prepareEmployeebean(Employee employee) { 
     EmployeeBean employeeBean = new EmployeeBean(); 
     employeeBean.setAddress(employee.getEmpAddress()); 
     employeeBean.setAge(employee.getEmpAge()); 
     employeeBean.setSalary(employee.getSalary()); 
     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.setSalary(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.getSalary()); 
       bean.setAddress(employee.getEmpAddress()); 
       bean.setId(employee.getEmpId()); 
       employeeBeen.add(bean); 
      } 
     } 
     return employeeBeen; 
    } 

}

EmployeeDao.javaインタフェース

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); 
}

EmployeeDaoImpl.java

EmployeeController.java

下記のように

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) { Transaction transaction = sessionFactory.getCurrentSession().beginTransaction(); Employee employee = (Employee) sessionFactory.getCurrentSession().get(Employee.class, empid); transaction.commit(); return employee; } public void deleteEmployee(Employee employee) { Transaction transaction = sessionFactory.getCurrentSession().beginTransaction(); sessionFactory.getCurrentSession().createQuery("DELETE FROM Employee WHERE empid = " + employee.getEmpId()).executeUpdate(); transaction.commit(); } }

EmployeeService.javaインタフェース

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.java

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); } }
Employee.java

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 = "salary") private Long salary; 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 getSalary() { return salary; } public void setSalary(Long salary) { this.salary = salary; } }
EmployeeBean.java

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; } }

addEmployee.jspページ

<%@ 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="${pageContext.request.contextPath}/save.html"> <table> <tr> <td><form:label path="id">Employee ID:</form:label></td> <td><form:input path="id" value="${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="${employee.address}"/></td> <td align="center"><a href="edit.html?id=${employee.id}">Edit</a> | <a href="delete.html?id=${employee.id}">Delete</a></td> </tr> </c:forEach> </table> </c:if> </body> </html>

employeeList.jspページ

<%@ 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><a href="add.html">Add More Employee</a></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>

インデックス。jspページ

<%@ 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. <a href="employees.html">List of Employees</a></h2> <h2>2. <a href="add.html">Add Employee</a></h2> </body> </html>

春-servlet.xmlファイル

<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/waseem"></property> <property name="username" value="postgres"></property> <property name="password" value="coviam"></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>

のweb.xmlファイル

<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>

pom.xmlファイル

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com</groupId> <artifactId>waseem</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>waseem Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <org.springframework.version>3.1.1.RELEASE</org.springframework.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc-portlet</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${org.springframework.version}</version> <scope>test</scope> </dependency> <dependency> <groupId>org.postgresql</groupId> <artifactId>postgresql</artifactId> <version>9.4-1206-jdbc42</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.2.2</version> </dependency> <dependency> <groupId>commons-pool</groupId> <artifactId>commons-pool</artifactId> <version>1.6</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>4.0.1.Final</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>4.2.0.Final</version> </dependency> <dependency> <groupId>org.hibernate.common</groupId> <artifactId>hibernate-commons-annotations</artifactId> <version>4.0.1.Final</version> <classifier>tests</classifier> </dependency> <dependency> <groupId>org.hibernate.javax.persistence</groupId> <artifactId>hibernate-jpa-2.0-api</artifactId> <version>1.0.1.Final</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>4.0.1.Final</version> </dependency> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>1.0.0.GA</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.6.4</version> </dependency> <dependency> <groupId>org.jboss.logging</groupId> <artifactId>jboss-logging</artifactId> <version>3.1.0.CR2</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.6.4</version> </dependency> </dependencies> <build> <finalName>waseem</finalName> </build> </project>

ここでは、事前に私を助けて

出典

2016-12-02 waseem khan

更新する前にエンティティを読む必要があります – Jens

@Jens okありがとう –

@Jens上記のコードをもう少し詳しく解説してください。 –

のおかげでは問題ではなく、この書き込みののprepareModel（たEmployeeBeanたEmployeeBean）メソッド

private Employee prepareModel(EmployeeBean employeeBean) { 
     Employee employee = new Employee(); 
     employee.setEmpAddress(employeeBean.getAddress()); 
     employee.setEmpAge(employeeBean.getAge()); 
     employee.setEmpName(employeeBean.getName()); 
     employee.setSalary(employeeBean.getSalary()); 
     employee.setEmpId(null); 
     return employee;

この1つの変更にControllerEmployeeクラスで発生employee.setEmpId（employeeBean.getId（））;

この（編集をして削除）やって正常に動作し、リンクをすることで、ここで完全な変更方法

private Employee prepareModel(EmployeeBean employeeBean) { 
     Employee employee = new Employee(); 
     employee.setEmpAddress(employeeBean.getAddress()); 
     employee.setEmpAge(employeeBean.getAge()); 
     employee.setEmpName(employeeBean.getName()); 
     employee.setSalary(employeeBean.getSalary()); 
     employee.setEmpId(employeeBean.getId()); 
     return employee;

。

出典

2016-12-06 19:05:44

Hibernate、postgresql、spring mvcで操作を更新および削除する方法

答えて

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