基于原理的架构里面,斟酌这次升级版本,可谓是1步1个脚印的向上走啊,可以说步步为坎,他人的知识,和自己的知识,相差很多啊,甚么都懂点,但是具体没有使用,就理解不深入了,爱莫能助,所以1切我们自己来操作吧,可谓是体会深入了,各种错,各种bug,是最好的学习进步的见证吧,
最近的升级Jboss版本到EAP6.2,所谓是版本升级,内容新增很多啊,比5.1改观很多,现在我们遇到的问题是注入到EJB容器内部的实体在最后的持久化的数据库的时候报错了,实体找不到,报错以下:
<span style="font-size:18px;">JBWEB000065: HTTP Status 500 - Request processing failed; nested exception is javax.ejb.EJBTransactionRolledbackException: Unknown entity: Jc.entity.Student
</span>
在尝试几种方法解决,我做了使用达成EAR包的构成测试,具体步骤总结分享(0、1、2加载顺序)
0:封装了mgr接口和实体
1:
2:web层
我要把这3个包打成1个eao包,把相互的依赖关系打到1起,参考官网
新建1个Mavne Project,写入pom文件内容
<span style="font-size:18px;"><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/xsd/maven⑷.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tgb</groupId>
<artifactId>lishehetestear</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>ear</packaging>
<build>
<plugins>
<plugin>
<artifactId>maven-ear-plugin</artifactId>
<version>2.9</version>
</plugin>
</plugins>
</build>
</project></span>
如果pom文件报错,那末安装1下 m2e-wtp这个插件,插件地址
插件装好以后,需要把需要打入的jar和war包都添加到里面来
<span style="font-size:18px;"><dependencies>
<dependency>
<groupId>com.tgb</groupId>
<artifactId>lishehe_api</artifactId>
<version>0.0.1-SNAPSHOT</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>com.tgb</groupId>
<artifactId>lishehe_core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>com.tgb</groupId>
<artifactId>lishehe_war</artifactId>
<version>0.0.1-SNAPSHOT</version>
<type>war</type>
</dependency>
</dependencies></span>
然后运行mvn的命令 ear: generate-application-xml,此命令是用来生成ear中的部署描写符的。
成功以后运行mvn的命令,ear:ear,,成功后,从target开发打包好的ear,发现要打包的几个包外,几个依赖的包也都在里面,ear提供的插件Creatin Skinny WARS,
<span style="font-size:18px;"><span style="font-size:18px;"><plugin>
<artifactId>maven-ear-plugin</artifactId>
<version>2.9</version>
<configuration>
<packagingIncludes>META-INF/**,**/lishehe_*.jar,**/lishehe_*.war</packagingIncludes>
</configuration>
</plugin></span></span>
注:上面这句话是说要将META-INF下(有application.xml等)及所有的lishehe开头的jar、war都打包进来。
现在再来看,这样生成的ear包以下,现在就只剩下我们需要部署的jar及war。
现在可以打成EAR包了,当我加载的时候出现了问题,空指针,Jboss依照字母加载,需要改成依照1定的依赖关系加载
只是在pom中对JBoss进行配置,还得将那些jar加载顺序写到application.xml文件(用ear:generate-application-xml生成的)里面。
<span style="font-size:18px;"><span style="font-size:18px;"><plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ear-plugin</artifactId>
<version>2.9</version>
<configuration>
<packagingIncludes>META-INF/**,**/lishehe_*.jar,**/lihehe_*.war</packagingIncludes>
<jboss>
<version>5</version>
<module-order>strict</module-order>
</jboss>
<modules>
<jarModule>
<groupId>com.tgb</groupId>
<artifactId>lishehe_api</artifactId>
<includeInApplicationXml>true</includeInApplicationXml>
</jarModule>
<jarModule>
<groupId>com.tgb</groupId>
<artifactId>lishehe_core</artifactId>
<includeInApplicationXml>true</includeInApplicationXml>
</jarModule>
<webModule>
<groupId>com.tgb</groupId>
<artifactId>lishehe_war</artifactId>
</webModule>
</modules>
</configuration>
</plugin>
</plugins></span></span>
application.xml中文件生成是
<span style="font-size:18px;"><span style="font-size:18px;"><?xml version="1.0" encoding="UTF⑻"?>
<!DOCTYPE application PUBLIC
"-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
"http://java.sun.com/dtd/application_1_3.dtd">
<application>
<display-name>lishehetestear</display-name>
<module>
<java>lishehe_api-0.0.1-SNAPSHOT.jar</java>
</module>
<module>
<java>lishehe_core-0.0.1-SNAPSHOT.jar</java>
</module>
<module>
<web>
<web-uri>lishehe_war-0.0.1-SNAPSHOT.war</web-uri>
<context-root>/lishehe_war</context-root>
</web>
</module>
</application></span></span>
jboss-app.xml内容
<span style="font-size:18px;"><span style="font-size:18px;"><?xml version="1.0" encoding="UTF⑻"?>
<!DOCTYPE jboss-app PUBLIC
"-//JBoss//DTD Java EE Application 5.0//EN"
"http://www.jboss.org/j2ee/dtd/jboss-app_5_0.dtd">
<jboss-app>
<module-order>strict</module-order>
</jboss-app></span></span>
全的pom内容
<span style="font-size:18px;"><span style="font-size:18px;"><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/xsd/maven⑷.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tgb</groupId>
<artifactId>lishehetestear</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>ear</packaging>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>com.tgb</groupId>
<artifactId>lishehe_api</artifactId>
<version>0.0.1-SNAPSHOT</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>com.tgb</groupId>
<artifactId>lishehe_core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>com.tgb</groupId>
<artifactId>lishehe_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>
<version>2.9</version>
<configuration>
<packagingIncludes>META-INF/**,**/lishehe_*.jar,**/lihehe_*.war</packagingIncludes>
<jboss>
<version>5</version>
<module-order>strict</module-order>
</jboss>
<modules>
<jarModule>
<groupId>com.tgb</groupId>
<artifactId>lishehe_api</artifactId>
<includeInApplicationXml>true</includeInApplicationXml>
</jarModule>
<jarModule>
<groupId>com.tgb</groupId>
<artifactId>lishehe_core</artifactId>
<includeInApplicationXml>true</includeInApplicationXml>
</jarModule>
<webModule>
<groupId>com.tgb</groupId>
<artifactId>lishehe_war</artifactId>
</webModule>
</modules>
</configuration>
</plugin>
</plugins>
</build>
</project></span></span>
剩下的就是部署了,直接扔到Jboss里面便可,
总结
这个时候深入体会到英语很重要啊,仔细的深入的去学习,查资料(外网的靠谱)。