登录
当前位置： 首页 > 工具软件 > JBoss EJB3 Plugin > 使用案例 >

gwt-2.8.2下载_GWT EJB3 Maven JBoss 5.1集成教程

白吕恭
2023-12-01

gwt-2.8.2下载

大家好，

在本文中，我们将演示如何正确集成GWT和EJB3 ，以实现示例项目，使用maven进行构建并将其部署在JBoss 5.1应用服务器上。 实际上，您可以轻松地更改maven构建文件中的依赖关系，并将项目部署到您喜欢的应用程序服务器中。 为了尽可能通用，我们将使用命令行风格的maven和gedit文本编辑器。

首先，我们必须创建pom项目。 我们将其称为ejb-gwt。 

mkdir ejb-gwt 
cd ejb-gwt
gedit pom.xml

pom.xml 

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0" xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven4.0.0.xsd">
  <modelversion>4.0.0</modelversion>
  <groupid>com.javacodegeeks</groupid>
  <artifactid>ejb-gwt</artifactid>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <name>ejb-gwt</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceencoding>UTF-8</project.build.sourceencoding>
  </properties>
  <dependencies>
  </dependencies>
  <modules>
  </modules>
 <build>
  <plugins>
   <plugin>
    <groupid>org.apache.maven.plugins</groupid>
    <artifactid>maven-compiler-plugin</artifactid>
    <configuration>
     1.6
     <target>1.6</target>
    </configuration>
   </plugin>
  </plugins>
 </build>
</project>

然后，我们将创建包含ejb类的模块。 我们将其称为ejb-jar。 

mvn archetype:create -DgroupId=com.javacodegeeks -DartifactId=ejb-jar
cd ejb-jar/src/main
mkdir resources
cd resources
mkdir META-INF
cd META-INF
gedit persistence.xml

我们将配置persistence.xml以使用jboss的默认数据源。

persistence.xml 

<persistence version="2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/persistence" xsi:schemalocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="MyPersistenceUnit">
  <provider>org.hibernate.ejb.HibernatePersistence</provider>
  <jta-data-source>java:/DefaultDS</jta-data-source>
   <properties>
   <property name="hibernate.hbm2ddl.auto" value="update">
   <property name="hibernate.show_sql" value="true">
   <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect">
  </property></property></property></properties>
 </persistence-unit>
</persistence>

在src / java中，您将放置您的ejb代码。 在我们的示例中，我们有一个实体bean

Employee.java 

package com.javacodegeeks.ejb.entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "EMPLOYEE")
public class Employee implements java.io.Serializable {
 
 private static final long serialVersionUID = 7440297955003302414L;

 @Id
 @Column(name="employee_id")
 private long employeeId;
 
 @Column(name="employee_name", nullable = false, length=30)
 private String employeeName;
 
 @Column(name="employee_surname", nullable = false, length=30)
 private String employeeSurname;
 
 @Column(name="job", length=50)
 private String job;
  
 public Employee() {
 }

 public Employee(int employeeId) {
  this.employeeId = employeeId;  
 }

 public Employee(long employeeId, String employeeName, String employeeSurname,
   String job) {
  this.employeeId = employeeId;
  this.employeeName = employeeName;
  this.employeeSurname = employeeSurname;
  this.job = job;
 }

 public long getEmployeeId() {
  return employeeId;
 }

 public void setEmployeeId(long employeeId) {
  this.employeeId = employeeId;
 }

 public String getEmployeeName() {
  return employeeName;
 }

 public void setEmployeeName(String employeeName) {
  this.employeeName = employeeName;
 }

 public String getEmployeeSurname() {
  return employeeSurname;
 }

 public void setEmployeeSurname(String employeeSurname) {
  this.employeeSurname = employeeSurname;
 }

 public String getJob() {
  return job;
 }

 public void setJob(String job) {
  this.job = job;
 }
}

会话bean的本地接口。

EmployeeService.java 

package com.javacodegeeks.ejb.session;

import com.javacodegeeks.ejb.entity.Employee;

public interface EmployeeService {
 public Employee findEmployee(long employeeId);
 public void saveEmployee(long employeeId, String name, String surname, String jobDescription) throws Exception;
 public void updateEmployee(long employeeId, String name, String surname, String jobDescription) throws Exception;
 public void saveOrUpdateEmployee(long employeeId, String name, String surname, String jobDescription) throws Exception;
 public void deleteEmployee(long employeeId) throws Exception;
}

最后确定会话bean。

EmployeeServiceBean.java 

package com.javacodegeeks.ejb.session;

import javax.ejb.Local;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import com.javacodegeeks.ejb.entity.Employee;

@Stateless(name = "employeeService")
@Local(EmployeeService.class)
public class EmployeeServiceBean implements EmployeeService {
 @PersistenceContext
 private EntityManager entityManager;

 public void deleteEmployee(long employeeId) throws Exception {
  entityManager.remove(entityManager.find(Employee.class, employeeId));
 }

 public Employee findEmployee(long employeeId) {
  return entityManager.find(Employee.class, employeeId);
 }

 public void saveEmployee(long employeeId, String name, String surname,
   String jobDescription) throws Exception {
  Employee emp = new Employee();
  emp.setEmployeeId(employeeId);
  emp.setEmployeeName(name);
  emp.setEmployeeSurname(surname);
  emp.setJob(jobDescription);
  
  entityManager.persist(emp);

 }

 public void saveOrUpdateEmployee(long employeeId, String name,
   String surname, String jobDescription) throws Exception {
  Employee emp = new Employee();
  emp.setEmployeeId(employeeId);
  emp.setEmployeeName(name);
  emp.setEmployeeSurname(surname);
  emp.setJob(jobDescription);
  
  entityManager.merge(emp);
 }

 public void updateEmployee(long employeeId, String name, String surname,
   String jobDescription) throws Exception {
  Employee emp = entityManager.find(Employee.class, employeeId);
  emp.setEmployeeName(name);
  emp.setEmployeeSurname(surname);
  emp.setJob(jobDescription);
  
  entityManager.merge(emp);
 }

}

ejb-jar模块的pom.xml应该是：

pom.xml 

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0" xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelversion>4.0.0</modelversion>
  <parent>
    <artifactid>ejb-gwt</artifactid>
    <groupid>com.javacodegeeks</groupid>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <groupid>com.javacodegeeks</groupid>
  <artifactid>ejb-jar</artifactid>
  <version>0.0.1-SNAPSHOT</version>
  <name>ejb-jar</name>
  <packaging>ejb</packaging>
  <url>http://maven.apache.org</url>

  <repositories>
   <repository>
    <id>jboss-maven2</id>
    <url>http://repository.jboss.com/maven2</url>
    </repository>
  </repositories>

  <dependencies>
   <dependency>
     <groupid>org.jboss.jbossas</groupid>
     <artifactid>jboss-as-client</artifactid>
     <version>5.1.0.GA</version>
     <type>pom</type>
     <scope>provided</scope>
 </dependency>
   <dependency>
      <groupid>junit</groupid>
      <artifactid>junit</artifactid>
      <version>4.7</version>
      <scope>test</scope>
    </dependency> 
  </dependencies>
  <build>
    <plugins>
        <plugin>
            <groupid>org.apache.maven.plugins</groupid>
            <artifactid>maven-ejb-plugin</artifactid>
            <configuration>
                <ejbversion>3.0</ejbversion>
            </configuration>
        </plugin>
    </plugins>
</build>
</project>

现在，我们将基于gwt-maven-plugin原型生成我们的Web项目。 

mvn archetype:generate -DarchetypeGroupId=org.codehaus.mojo -DarchetypeArtifactId=gwt-maven-plugin -DarchetypeVersion=1.2    -DgroupId=com.javacodegeeks    -DartifactId=war
cd war
gedit pom.xml

pom.xml 

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0" xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  
  <modelversion>4.0.0</modelversion>
  <parent>
        <artifactid>ejb-gwt</artifactid>
        <groupid>com.javacodegeeks</groupid>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
  <groupid>com.javacodegeeks</groupid>
  <artifactid>war</artifactid>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version> 
  <properties>
      <gwt.version>2.0.4</gwt.version>
      <maven.compiler.source>1.6</maven.compiler.source>
      <maven.compiler.target>1.6</maven.compiler.target>
  </properties>
  <dependencies>
    <dependency>
      <groupid>com.google.gwt</groupid>
      <artifactid>gwt-servlet</artifactid>
      <version>${gwt.version}</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupid>com.google.gwt</groupid>
      <artifactid>gwt-user</artifactid>
      <version>${gwt.version}</version>  
      <scope>provided</scope>
    </dependency>
    <dependency>
     <groupid>org.jboss.jbossas</groupid>
     <artifactid>jboss-as-client</artifactid>
     <version>5.1.0.GA</version>
     <type>pom</type>
     <scope>provided</scope>
 </dependency>
 <dependency>
    <groupid>com.javacodegeeks</groupid>
    <artifactid>ejb-jar</artifactid>
    <version>0.0.1-SNAPSHOT</version>
    <type>ejb</type>
    <scope>provided</scope>
   </dependency>
    <dependency>
      <groupid>junit</groupid>
      <artifactid>junit</artifactid>
      <version>4.7</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
  <finalname>war</finalname>
    <outputdirectory>war/WEB-INF/classes</outputdirectory>
    <plugins>
      <plugin>
        <groupid>org.codehaus.mojo</groupid>
        <artifactid>gwt-maven-plugin</artifactid>
        <version>1.2</version>
        <executions>
          <execution>
            <goals>
              <goal>compile</goal>
              <goal>generateAsync</goal>
              <goal>test</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <runtarget>com.javacodegeeks.war.Application/Application.html</runtarget>
        </configuration>
      </plugin>
      <plugin>
          <groupid>org.apache.maven.plugins</groupid>
          <artifactid>maven-compiler-plugin</artifactid>
          <version>2.0.2</version>
          <configuration>
            ${maven.compiler.source}
            <target>${maven.compiler.target}</target>
          </configuration>
      </plugin>
    </plugins>
  </build>

</project>
cd src/main/webapp/WEB-INF
gedit web.xml

web.xml 

<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">
 <display-name>GWT-Maven-Archetype</display-name> 
 <servlet>
    <servlet-name>emp</servlet-name>
    <servlet-class>com.javacodegeeks.war.server.services.EmployeeServiceGWTImpl</servlet-class>
  </servlet>
  
  <servlet-mapping>
    <servlet-name>emp</servlet-name>
    <url-pattern>/com.javacodegeeks.war.Application/emp</url-pattern>
  </servlet-mapping>
 <welcome-file-list>
  <welcome-file>index.html</welcome-file>
 </welcome-file-list>
</web-app>

如果我们想在servlet容器中进行ejb注入，则web.xml应该适用于2.5规范。

现在，让我们看一下gwt服务。

EmployeeServiceGWT.java 

package com.javacodegeeks.war.shared.services;

import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
import com.javacodegeeks.war.shared.entity.EmployeeUtil;

@RemoteServiceRelativePath("emp")
public interface EmployeeServiceGWT  extends RemoteService  {
 public EmployeeUtil findEmployee(long employeeId);
 public void saveEmployee(long employeeId, String name, String surname, String jobDescription) throws Exception;
 public void updateEmployee(long employeeId, String name, String surname, String jobDescription) throws Exception;
 public void saveOrUpdateEmployee(long employeeId, String name, String surname, String jobDescription) throws Exception;
 public void deleteEmployee(long employeeId) throws Exception;
}

注意，RemoteServiceRelativePath与我们在web.xml中定义的servlet路径/com.javacodegeeks.war.Application/emp相关。

EmployeeServiceGWTImpl.java 

package com.javacodegeeks.war.server.services;

import javax.annotation.Resource;
import javax.ejb.EJB;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.UserTransaction;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import com.javacodegeeks.ejb.entity.Employee;
import com.javacodegeeks.ejb.session.EmployeeService;
import com.javacodegeeks.war.shared.entity.EmployeeUtil;
import com.javacodegeeks.war.shared.services.EmployeeServiceGWT;

public class EmployeeServiceGWTImpl extends RemoteServiceServlet implements EmployeeServiceGWT{

 /**
  * 
  */
 private static final long serialVersionUID = 5995064321382986251L;
 
 private EmployeeService employeeService;
 @Resource(name="java:UserTransaction") UserTransaction ut;


 
 @EJB
 public void setEmployeeService(EmployeeService employeeService) {
  this.employeeService = employeeService;
 }

 public void deleteEmployee(long employeeId) throws Exception {
  employeeService.deleteEmployee(employeeId);
  
 }

 public EmployeeUtil findEmployee(long employeeId) {
  
  Employee emp = employeeService.findEmployee(employeeId);
  if(emp != null) {
   try {
    ut.begin();
    EmployeeUtil util = new EmployeeUtil(emp.getEmployeeId(), emp.getEmployeeName(), emp.getEmployeeSurname(), emp.getJob());
    
    ut.commit();
    return util;
   } catch (Exception e) {
   }
   
  }
  return null;
 }

 public void saveEmployee(long employeeId, String name, String surname,
   String jobDescription) throws Exception {
  employeeService.saveEmployee(employeeId, name, surname, jobDescription);
  
 }

 public void saveOrUpdateEmployee(long employeeId, String name,
   String surname, String jobDescription) throws Exception {
  employeeService.saveOrUpdateEmployee(employeeId, name, surname, jobDescription);
  
 }

 public void updateEmployee(long employeeId, String name, String surname,
   String jobDescription) throws Exception {
  employeeService.updateEmployee(employeeId, name, surname, jobDescription);
  
 }

}

如您所见，我们使用注解@EJB注入employeeService会话bean。
请注意，出于基本原因，我们使用EmployeeUtil类 ：
GWT无法处理懒惰的初始化关系，因此我们将代理集合替换为实际集合。该替换应在事务范围内。 

package com.javacodegeeks.war.shared.entity;

import java.io.Serializable;

public class EmployeeUtil implements Serializable  {
 
 /**
  * 
  */
 private static final long serialVersionUID = -2732740011239267035L;

 private long employeeId;
 
 private String employeeName;
 
 private String employeeSurname;
 
 private String job;
 
 
 public EmployeeUtil() {
 }

 public EmployeeUtil(int employeeId) {
  this.employeeId = employeeId;  
 }

 public EmployeeUtil(long employeeId, String employeeName, String employeeSurname,
   String job) {
  this.employeeId = employeeId;
  this.employeeName = employeeName;
  this.employeeSurname = employeeSurname;
  this.job = job;
 }

 public long getEmployeeId() {
  return employeeId;
 }

 public void setEmployeeId(long employeeId) {
  this.employeeId = employeeId;
 }

 public String getEmployeeName() {
  return employeeName;
 }

 public void setEmployeeName(String employeeName) {
  this.employeeName = employeeName;
 }

 public String getEmployeeSurname() {
  return employeeSurname;
 }

 public void setEmployeeSurname(String employeeSurname) {
  this.employeeSurname = employeeSurname;
 }

 public String getJob() {
  return job;
 }

 public void setJob(String job) {
  this.job = job;
 }

}

本文的源代码中提供了gwt接口的其余源代码。

现在，我们已迈出最后一步，要建立耳朵。我们将创建一个模块来做到这一点。 

mvn archetype:create -DgroupId=com.javacodegeeks -DartifactId=ear
cd ear
rm -rf src
gedit pom.xml

pom.xml 

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0" xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelversion>4.0.0</modelversion>
  <parent>
    <artifactid>ejb-gwt</artifactid>
    <groupid>com.javacodegeeks</groupid>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <groupid>com.javacodegeeks</groupid>
  <artifactid>ear</artifactid>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>ear</packaging>
  <name>ear</name>
  <description>ear for gwt ejb3</description>
  <dependencies>
   <dependency>
    <groupid>com.javacodegeeks</groupid>
    <artifactid>ejb-jar</artifactid>
    <version>0.0.1-SNAPSHOT</version>
    <type>ejb</type>
   </dependency>
    <dependency>
    <groupid>com.javacodegeeks</groupid>
    <artifactid>war</artifactid>
    <version>0.0.1-SNAPSHOT</version>
    <type>war</type>
   </dependency>
  </dependencies>

 <build>
    <plugins>
      <plugin>
        <groupid>org.apache.maven.plugins</groupid>
        <artifactid>maven-ear-plugin</artifactid>
        <configuration>
          <generateapplicationxml>true</generateapplicationxml>
          <modules>
            <webmodule>
              <groupid>com.javacodegeeks</groupid>
              <artifactid>war</artifactid>
              <contextroot>ejb-gwt</contextroot>
            </webmodule>
            <ejbmodule>
              <groupid>com.javacodegeeks</groupid>
              <artifactid>ejb-jar</artifactid>
            </ejbmodule>
         </modules>
       </configuration>
     </plugin>
   </plugins>
  </build>
</project>

要构建项目，请转到根项目并输入：
mvn安装

本文的源代码位于此处 。

谢谢

。/拍

相关文章 ：

翻译自: https://www.javacodegeeks.com/2010/09/gwt-ejb3-maven-jboss-51-integration.html

gwt-2.8.2下载

 类似资料：

相关阅读

使用Servlet下载文件时如何使用GWT？MySQL Workbench下载与使用教程详解Android studio 2020中的Android SDK 下载教程MySQL下载安装详情图文教程VMware Workstation的下载与安装详细教程

相关文章

Java JDK下载与安装教程VC6.0下载地址和安装教程CLion下载、安装和汉化教程VS2010下载地址和安装教程VS2015下载地址和安装教程

相关问答

检查S3下载是否成功完成Spring集成（SFTP）：从子目录下载文件时出现问题Spring Thymeleaf下载生成的报告GWT模块正在随机卸载Stormpath Spring Boot集成-上下文重复

相关文档

GWT 入门教程GWT Highcharts 中文教程GWT Google Charts 中文教程NSIS 图文教程集锦Delphi API 文章合集 教程
快捷导航： 新手教程 算法原理 架构设计 Java进阶 数据库进阶 大厂专栏 面试经验 编程笔记 编程问答 所有专题 文档资料 工具软件 电子书籍 小牛导航
在线工具： 房贷计算器 个税计算器 Linux命令查询 Json格式化 正则表达式 颜色转换 AES加解密 SHA1加密 MD5加密 毒鸡汤 字数统计 随机密码生成 进制转换 Base64编解码 励志句子
Copyright © 2019-2024 小牛知识库@xnip.cn. All Rights Reserved.