在webLogic 10.3中部署Hibernate 3.5出现 ClassNotFoundException解决办法

http://sundoctor.iteye.com/blog/815651

在webLogic 10.3中部署Hibernate 3.5出现 ClassNotFoundException解决办法

博客分类：
• Java

Weblogic Hibernate JPA Java Eclipse

在开发Hibernate的Web项目应用时使用tomcat时运行很好，但实际生产环境中要部署到WebLogic就会出现一些ClassNotFoundException异常。

org.hibernate.QueryException: ClassNotFoundException: org.hibernate.hql.ast.HqlToken异常
这是使用Hibernate 3.0以后版本均会出现的异常；

exception is java.lang.NoSuchMethodError: javax.persistence.UniqueConstraint.name()Ljava/lang/String，如果使用Hibernate 3.5，在实体中使用了唯一约束会出现这个异常，因为在Hibernate 3.5使用了最新的Jpa 2.0，WebLogic中还是Jpa 1.0， UniqueConstraint.name在Jpa 2.0才有。

exception is java.lang.NoSuchMethodError: org.apache.commons.lang.ArrayUtils.isNotEmpty，我在项目使用了比较新版本的commons-lang-2.5.jar在webLogic 10.3会报这个异常；

在网search一下，解决ClassNotFoundException异常最常用的办法就是将出现异常类所在的jar包入到weblogic环境中的classpath最前面加载，将相应的antlr-2.7.6.jar、hibernate-jpa-2.0-api-1.0.0.Final.jar、commons-lang-2.5.jar copy到${WL_HOME/}server/lib/或其他目录，可以修改${DOMAIN_HOME}/bin/startWebLogic.sh,在CLASSPATH之前加上下面一句：

PRE_CLASSPATH=”${WL_HOME/}server/lib/antlr-2.7.6.jar:${WL_HOME/}server/lib/hibernate-jpa-2.0-api-1.0.0.Final.jar:${WL_HOME/}server/lib/commons-lang-2.5.jar”

PRE_CLASSPATH=”${WL_HOME/}server/lib/antlr-2.7.6.jar:${WL_HOME/}server/lib/hibernate-jpa-2.0-api-1.0.0.Final.jar:${WL_HOME/}server/lib/commons-lang-2.5.jar”

并将修改为CLASSPATH="${SAVE_CLASSPATH}"

CLASSPATH="${PRE_CLASSPATH}:${SAVE_CLASSPATH}"

CLASSPATH="${PRE_CLASSPATH}:${SAVE_CLASSPATH}"

或者修改${DOMAIN_HOME}/bin/setDomainEnv.sh，在setDomainEnv.sh前面加入一句：

EXT_PRE_CLASSPATH=”${WL_HOME/}server/lib/antlr-2.7.6.jar:${WL_HOME/}server/lib/hibernate-jpa-2.0-api-1.0.0.Final.jar:${WL_HOME/}server/lib/commons-lang-2.5.jar”
export EXT_PRE_CLASSPATH

EXT_PRE_CLASSPATH=”${WL_HOME/}server/lib/antlr-2.7.6.jar:${WL_HOME/}server/lib/hibernate-jpa-2.0-api-1.0.0.Final.jar:${WL_HOME/}server/lib/commons-lang-2.5.jar”
export EXT_PRE_CLASSPATH

在我项目实践中发现加入antlr-2.7.6.jar、hibernate-jpa-2.0-api-1.0.0.Final.jar、commons-lang-2.5.jar后，前两个起作用，异常消除，commons-lang-2.5.jar没有作用，exception is java.lang.NoSuchMethodError: org.apache.commons.lang.ArrayUtils.isNotEmpty异常依旧，当时没有解决方法，只好在项目中去掉ArrayUtils.isNotEmpty，杯具!!!

后来在网上找到一种更有效解决ClassNotFoundException的，可以解决所有WebLogic中的ClassNotFoundException。改解决办法是将web项目包含进ear包中。将web项目打包成war文件，在war文件相同目录下建立META-INF目录，目录建立application.xml、weblogic-application.xml两个文件，文件内容很简单，开发过weblogic EJB应用的应该很清楚。
application.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC '-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN' 'http://java.sun.com/dtd/application_1_3.dtd'>
<application>
  <display-name>cckzzx</display-name>
  <description>cckzzx</description>
  <module>
    <web>
      <web-uri>cckzzx.war</web-uri>
      <context-root>cckzzx</context-root>
    </web>
  </module>
</application>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC '-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN' 'http://java.sun.com/dtd/application_1_3.dtd'>
<application>
  <display-name>cckzzx</display-name>
  <description>cckzzx</description>
  <module>
    <web>
      <web-uri>cckzzx.war</web-uri>
      <context-root>cckzzx</context-root>
    </web>
  </module>
</application>

weblogic-application.xml

<?xml version="1.0"?>
<weblogic-application xmlns="http://www.bea.com/ns/weblogic/90"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <application-param>
        <param-name>webapp.encoding.default</param-name>
        <param-value>UTF-8</param-value>
    </application-param>
    <prefer-application-packages>
        <package-name>org.apache.commons.*</package-name>
        <package-name>antlr.*</package-name>
        <package-name>javax.persistence.*</package-name>
    </prefer-application-packages>
</weblogic-application>

<?xml version="1.0"?>
<weblogic-application xmlns="http://www.bea.com/ns/weblogic/90"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<application-param>
		<param-name>webapp.encoding.default</param-name>
		<param-value>UTF-8</param-value>
	</application-param>
	<prefer-application-packages>
		<package-name>org.apache.commons.*</package-name>	
		<package-name>antlr.*</package-name>
		<package-name>javax.persistence.*</package-name>
	</prefer-application-packages>
</weblogic-application>

<prefer-application-packages>
表示在weblogic中优先使用当前应用中的jar包
最后将war文件和META-INF目录打包成ear包、部署。在这里我参考网上资料写了一个ant脚本build.xml对项目进行ear打包
build.xml

<?xml version="1.0"?>
<project name="cckzzx" default="ear" basedir=".">
    <property name="project.name" value="cckzzx" />
    <property name="app.dir" value="${basedir}" />
    <property name="src.java.dir" value="${app.dir}/src/main/java" />
    <property name="src.resources.dir" value="${app.dir}/src/main/resources" />
    <property name="weblogic.home" value="/opt/Oracle/Middleware/wlserver_10.3" />
    <property name="wls.username" value="weblogic" />
    <property name="wls.password" value="weblogic123" />
    <property name="wls.hostname" value="localhost" />
    <property name="wls.port" value="7001" />
    <property name="wls.server.name" value="AdminServer" />
    <property name="build.dir" value="${app.dir}/build" />
    <property name="build.classes.dir" value="${build.dir}/classes" />
    <property name="build.tmp.dir" value="${build.dir}/tmp" />
    <path id="build.classpath" description="编译时的classpath路径">
        <fileset dir="${basedir}/WebRoot/WEB-INF/lib">

        <include name="*.jar" />
        </fileset>
        <fileset dir="${weblogic.home}/server/lib">
<include name="weblogic.jar" />
        </fileset>
        <pathelement location="${build.classes.dir}" />
    </path>
    <taskdef name="wldeploy" classname="weblogic.ant.taskdefs.management.WLDeploy" classpathref="build.classpath" />
    <target name="clean" description="删除编译目录">
        <delete dir="${build.dir}" />
    </target>
    <target name="prepare" depends="clean" description="创建编译目录">
        <mkdir dir="${build.dir}" />
        <mkdir dir="${build.classes.dir}" />
        <mkdir dir="${build.tmp.dir}" />
    </target>
    <target name="compile" depends="prepare" description="编译">
<javac srcdir="${src.java.dir}" destdir="${build.classes.dir}" compiler="org.eclipse.jdt.core.JDTCompilerAdapter" encoding="UTF-8" source="1.6" target="1.6" debug="on" deprecation="on" optimize="off" includes="**">
    <classpath refid="build.classpath" />
    </javac>
    </target>
    <target name="ear" depends="compile" description="打包EAR包">
    <jar jarfile="${build.dir}/${project.name}.jar">
    <fileset dir="${build.classes.dir}">
    <include name="com/**/*.class" />
    <include name="**/*.xml" />
    </fileset>
    </jar>
    <mkdir dir="${build.tmp.dir}/WebRoot" />
    <copy todir="${build.tmp.dir}/WebRoot">
    <fileset dir="${app.dir}/WebRoot">
    <exclude name="WEB-INF/classes/**" />
    </fileset>
    </copy>
    <copy todir="${build.tmp.dir}/WebRoot/WEB-INF/lib">
    <fileset file="${build.dir}/${project.name}.jar" />
    </copy>
    <mkdir dir="${build.tmp.dir}/WebRoot/WEB-INF/classes" />
    <copy todir="${build.tmp.dir}/WebRoot/WEB-INF/classes">
    <fileset dir="${src.resources.dir}" />
    </copy>
    <war warfile="${build.dir}/${project.name}.war" webxml="${build.tmp.dir}/WebRoot/WEB-INF/web.xml">
    <fileset dir="${build.tmp.dir}/WebRoot">
    <exclude name="WEB-INF/web.xml" />
    </fileset>
    </war>
    <ear earfile="${build.dir}/${project.name}.ear" appxml="${app.dir}/src/weblogic/META-INF/application.xml">
            <fileset dir="${app.dir}/src/weblogic">
                <include name="META-INF/weblogic-application.xml" />
    </fileset>
    <fileset dir="${build.dir}">
    <include name="${project.name}.war" />
    </fileset>
    </ear>

    <delete file="${build.dir}/${project.name}.jar" />
    <delete file="${build.dir}/${project.name}.war" />
    <delete dir="${build.classes.dir}" />
    <delete dir="${build.tmp.dir}" />
    </target>

    <target name="deploy" depends="ear,undeploy" description="布署EAR服务">
        <wldeploy action="deploy" name="${project.name}" source="${build.dir}/${project.name}.ear" targets="${wls.server.name}" user="${wls.username}" password="${wls.password}" adminurl="t3://${wls.hostname}:${wls.port}" debug="true" verbose="true" failonerror="true" />
    <echo message="come here......" />    <echo message="deploy success......." />
    </target>
    <target name="undeploy" description="删除EAR服务">
    <wldeploy action="undeploy" name="${project.name}" targets="${wls.server.name}" user="${wls.username}" password="${wls.password}" adminurl="t3://${wls.hostname}:${wls.port}" debug="false" verbose="false" failonerror="false" />
    </target>
</project>

<?xml version="1.0"?>
<project name="cckzzx" default="ear" basedir=".">
	<property name="project.name" value="cckzzx" />
	<property name="app.dir" value="${basedir}" />
	<property name="src.java.dir" value="${app.dir}/src/main/java" />
	<property name="src.resources.dir" value="${app.dir}/src/main/resources" />
	<property name="weblogic.home" value="/opt/Oracle/Middleware/wlserver_10.3" />
	<property name="wls.username" value="weblogic" />
	<property name="wls.password" value="weblogic123" />
	<property name="wls.hostname" value="localhost" />
	<property name="wls.port" value="7001" />
	<property name="wls.server.name" value="AdminServer" />
	<property name="build.dir" value="${app.dir}/build" />
	<property name="build.classes.dir" value="${build.dir}/classes" />
	<property name="build.tmp.dir" value="${build.dir}/tmp" />
	<path id="build.classpath" description="编译时的classpath路径">
		<fileset dir="${basedir}/WebRoot/WEB-INF/lib">

		<include name="*.jar" />
		</fileset>
		<fileset dir="${weblogic.home}/server/lib">
<include name="weblogic.jar" />
		</fileset>
		<pathelement location="${build.classes.dir}" />
	</path>
	<taskdef name="wldeploy" classname="weblogic.ant.taskdefs.management.WLDeploy" classpathref="build.classpath" />
	<target name="clean" description="删除编译目录">
		<delete dir="${build.dir}" />
	</target>
	<target name="prepare" depends="clean" description="创建编译目录">
		<mkdir dir="${build.dir}" />
		<mkdir dir="${build.classes.dir}" />
		<mkdir dir="${build.tmp.dir}" />
	</target>
	<target name="compile" depends="prepare" description="编译">
<javac srcdir="${src.java.dir}" destdir="${build.classes.dir}" compiler="org.eclipse.jdt.core.JDTCompilerAdapter" encoding="UTF-8" source="1.6" target="1.6" debug="on" deprecation="on" optimize="off" includes="**">
	<classpath refid="build.classpath" />
	</javac>
	</target>
	<target name="ear" depends="compile" description="打包EAR包">
	<jar jarfile="${build.dir}/${project.name}.jar">
	<fileset dir="${build.classes.dir}">
	<include name="com/**/*.class" />
	<include name="**/*.xml" />
	</fileset>
	</jar>
	<mkdir dir="${build.tmp.dir}/WebRoot" />
	<copy todir="${build.tmp.dir}/WebRoot">
	<fileset dir="${app.dir}/WebRoot">
	<exclude name="WEB-INF/classes/**" />
	</fileset>
	</copy>
	<copy todir="${build.tmp.dir}/WebRoot/WEB-INF/lib">
	<fileset file="${build.dir}/${project.name}.jar" />
	</copy>
	<mkdir dir="${build.tmp.dir}/WebRoot/WEB-INF/classes" />
	<copy todir="${build.tmp.dir}/WebRoot/WEB-INF/classes">
	<fileset dir="${src.resources.dir}" />
	</copy>
	<war warfile="${build.dir}/${project.name}.war" webxml="${build.tmp.dir}/WebRoot/WEB-INF/web.xml">
	<fileset dir="${build.tmp.dir}/WebRoot">
	<exclude name="WEB-INF/web.xml" />
	</fileset>
	</war>
	<ear earfile="${build.dir}/${project.name}.ear" appxml="${app.dir}/src/weblogic/META-INF/application.xml">
			<fileset dir="${app.dir}/src/weblogic">
				<include name="META-INF/weblogic-application.xml" />
	</fileset>
	<fileset dir="${build.dir}">
	<include name="${project.name}.war" />
	</fileset>
	</ear>

	<delete file="${build.dir}/${project.name}.jar" />
	<delete file="${build.dir}/${project.name}.war" />
	<delete dir="${build.classes.dir}" />
	<delete dir="${build.tmp.dir}" />
	</target>

	<target name="deploy" depends="ear,undeploy" description="布署EAR服务">
		<wldeploy action="deploy" name="${project.name}" source="${build.dir}/${project.name}.ear" targets="${wls.server.name}" user="${wls.username}" password="${wls.password}" adminurl="t3://${wls.hostname}:${wls.port}" debug="true" verbose="true" failonerror="true" />
	<echo message="come here......" />	<echo message="deploy success......." />
	</target>
	<target name="undeploy" description="删除EAR服务">
	<wldeploy action="undeploy" name="${project.name}" targets="${wls.server.name}" user="${wls.username}" password="${wls.password}" adminurl="t3://${wls.hostname}:${wls.port}" debug="false" verbose="false" failonerror="false" />
	</target>
</project>

如果项目中使用了泛型，使用该脚本如果抛出无法确定 T 的类型参数；对于上限为 T ,java.lang.Object 的类型变量 T，不存在唯一最大实例异常，在eclipse中可以编译运行，为什么用ant就不行了呢？
解决方法是在classpath加入${eclipse_home}/plugins/org.eclipse.jdt.core_3.6.1.v_A68_R36x.jar和从org.eclipse.jdt.core_3.6.1.v_A68_R36x.jar解决出来的jdtCompilerAdapter.jar两个包。