EJB的调用

EJB调用.html

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EJB的调用

调用 EJB

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1. 配置客户端上下文属性
   在应用程序的 classpath 中创建一个“jboss-ejb-client.properties” 文件，我们可以把它放在应用程序的 ejbModule 文件夹下，该文件中包含以下属性：

    remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED=false
    remote.connections=default
    remote.connection.default.host=localhost
    remote.connection.default.port = 4447
    remote.connection.default.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS=false
    remote.connection.default.username =YOUR_JBOSS_COSOLE_USERNAME
    remote.connection.default.password =YOUR_JBOSS_COSOLE_PASSWORD
   

2. 给 client 添加所需的 JAR 文件来运行客户端程序
3. 通过 InitialContext 获得 Context

    private static Context initialContext;
    private static final String PKG_INTERFACES = "org.jboss.ejb.client.naming";
    Properties properties = new Properties();
    properties.put(Context.URL_PKG_PREFIXES, PKG_INTERFACES);
    initialContext = new InitialContext(properties);
   

4. 得到 EJB 的jndiName

    //appName 表示部署的 ear 文件的名称部分（不包括 '.ear')
    String appName = "";
    //moduleName 表示该EJB jar 文件的名称部分
    String moduleName = "JPAProject";
    /* Jboss 7 允许每个部署有一个（可选）唯一的名字，如果我们没有明确该名字distinctName 为 "" */
    String distinctName = "";
    //要调用的 EJB 的类名
    String beanName = "ProjectBean";
    //将 ProjectBean 的 remote 接口放在和 Client 中（包名和 EJB 端相同）
    String interfaceName = ProjectBeanRemote.class.getName();
   
    String jndiName = "ejb:" + appName + "/" + moduleName + "/" +
      distinctName + "/" + beanName + "!" + interfaceName;
   

5. 获得 EJB 远程接口

    ProjectBeanRemote PB = (ProjectBeanRemote) context.lookup(jndiName);
   

6. 通过接口 PB 调用方法

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