JBOSS EAP6 系列二客户端访问位于EAR中的EJB时，jndi name要遵守的规则

怼烎@ 2022-08-06 12:20 6阅读 0赞

# EJB 的 jndi语法（在整个调用远程ejb的过程中语法的遵循是相当重要的） #

参见jboss-as-quickstarts-7.1.1.CR2\\ejb-remote\\client\\src\\main\\java\\org\\jboss\\as\\quickstarts\\ejb\\remote\\client\\RemoteEJBClient.java 中的注释：

// The JNDI lookup name for a stateless session bean has the syntax of:
 // ejb:<appName>/<moduleName>/<distinctName>/<beanName>!<viewClassName>
 
 // <appName> The application name is the name of the EAR that the EJB is deployed in
 // (without the .ear). If the EJB JAR is not deployed in an EAR then this is
 // blank. The app name can also be specified in the EAR's application.xml
 // 
 // <moduleName> By the default the module name is the name of the EJB JAR file (without the
 // .jar suffix). The module name might be overridden in the ejb-jar.xml
 //
 // <distinctName> : AS7 allows each deployment to have an (optional) distinct name.
 // This example does not use this so leave it blank.
 //
 // <beanName> : The name of the session been to be invoked.
 //
 // <viewClassName>: The fully qualified classname of the remote interface. Must include
 // the whole package name.

// The JNDI lookup name for a **stateful** session bean has the syntax of:

**// ejb:<appName>/<moduleName>/<distinctName>/<beanName>!<viewClassName>?stateful**

//
 // <appName> The application name is the name of the EAR that the EJB is deployed in
 // (without the .ear). If the EJB JAR is not deployed in an EAR then this is
 // blank. The app name can also be specified in the EAR's application.xml
 // 
 // <moduleName> By the default the module name is the name of the EJB JAR file (without the
 // .jar suffix). The module name might be overridden in the ejb-jar.xml
 //
 // <distinctName> : AS7 allows each deployment to have an (optional) distinct name.
 // This example does not use this so leave it blank.
 //
 // <beanName> : The name of the session been to be invoked.
 //
 // <viewClassName>: The fully qualified classname of the remote interface. Must include
 // the whole package name.

现在我们对上面的语法进行细化，这是最容易出错的地方！

## 1. 纯EJB jar部署中的bean的访问 ##

### 1.1 JNDI lookup name for astatelesssession bean has the  syntax of:    ###

ejb:/<moduleName>/<distinctName>/<beanName>!<viewClassName>
 或者
 ejb:/<moduleName>/<distinctName>//<beanName>!<viewClassName>
 
 比如：
 "ejb:/jboss-as-ejb-remote-app/CounterBean!" + RemoteCounter.class.getName()
 "ejb:/jboss-as-ejb-remote-app//CounterBean!" + RemoteCounter.class.getName()

### **1.2 JNDI lookup name for astatefullsession bean has the  syntax of:**    ###

ejb:/<moduleName>/<distinctName>/<beanName>!<viewClassName>?stateful
 或者
 ejb:/<moduleName>/<distinctName>//<beanName>!<viewClassName>?stateful
 
 
 比如：
 "ejb:/jboss-as-ejb-remote-app/CounterBean!" + RemoteCounter.class.getName()+"?stateful"
 "ejb:/jboss-as-ejb-remote-app//CounterBean!" + RemoteCounter.class.getName()+"?stateful"

## 2. 包含在 ear部署中的EJB jar中的bean的访问 ##

### 2.1 JNDI lookup name for astatelesssession bean has the ###

syntax of:

ejb:<appName>/<moduleName>/<distinctName>/<beanName>!<viewClassName>
 或者
 ejb:<appName>/<moduleName>/<distinctName>//<beanName>!<viewClassName>
 
 比如：
 "ejb:nms-server-ear/nms-server-ejb/SecuredRemoteSession!" + ISecuredRemoteSession.class.getName()
 "ejb:nms-server-ear/nms-server-ejb//SecuredRemoteSession!" + ISecuredRemoteSession.class.getName()
 
 注意： appName 前面没有 斜线 "/"!!! 这是最容易出错的地方！！！
 （如果以斜线开头，表明是ejb jar不是在 ear中部署的！！！）

### **2.2 JNDI lookup name for astatefullsession bean has the syntax of:**    ###

ejb:<appName>/<moduleName>/<distinctName>/<beanName>!<viewClassName>?stateful
 或者
 ejb:<appName>/<moduleName>/<distinctName>//<beanName>!<viewClassName>?stateful
 
 注意： appName 前面没有 斜线 "/"!!! 这是最容易出错的地方！！！
 （如果以斜线开头，表明是ejb jar不是在 ear中部署的！！！）

# 总结 #

看英文文档耐人寻味啊，好好学习英语吧，外网的资料更加的可靠啊！