记录工厂错误

Question

我在Eclipse上使用Hibernate并在尝试编译时不断收到以下错误消息：

  

build.xml：39：java.lang.NoClassDefFoundError：org / apache / commons / logging / LogFactory

我的libs文件夹中有commons-logging.jar文件，这是我的classpath文件：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" path="src"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
        <attributes>
            <attribute name="owner.project.facets" value="java"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v6.0">
        <attributes>
            <attribute name="owner.project.facets" value="jst.web"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
    <classpathentry kind="src" path="flex_src"/>
    <classpathentry kind="output" path="build/classes"/>
</classpath>

我甚至尝试在build.xml文件中打印类路径，并且commons-logging.jar也出现在那里，并且具有正确的目录。这是我的build.xml文件以供进一步参考：

<project name="project" default="main">
    <property file="build.properties" />
    <xmlproperty file="${project-root}/src/META-INF/persistence.xml" collapseAttributes="true" />
    <description>Generate CDB files</description>
    <target name="force">
        <property name="force.build" value="true" />
        <antcall target="mainInternal" />
    </target>
    <target name="main">
        <property name="force.build" value="false" />
        <antcall target="mainInternal" />
    </target>
    <target name="mainInternal">
        <antcall target="generateHibernateCfg" />
        <antcall target="compileEntities" />
        <antcall target="findAnnotations" />
        <antcall target="compileServiceInterfaces" />
        <antcall target="generateDTOs" />
        <antcall target="generateServices" />
        <antcall target="generateFlex" />
        <antcall target="generateBlazeDSConfig" />
    </target>
    <target name="generateHibernateCfg">
        <xslt in="${project-root}/src/META-INF/persistence.xml" style="${project-root}/cdb_build/src/hibernate.cfg.xsl" out="${project-root}/src/hibernate.cfg.xml" force="${force.build}" />
    </target>
    <target name="compileEntities">
        <path id="build.class.path">
            <fileset dir="${project-root}/WebContent/WEB-INF/lib" />
            <pathelement path="${classes-folder}" />
        </path>
        <pathconvert property="cp" refid="build.class.path" />
        <echo message="Classpath = ${cp}"/>
        <path id="srcfiles">
            <fileset dir="${project-root}/src">
                <include name="**/*.java" />
            </fileset>
        </path>
        <pathconvert property="srcfiles" refid="srcfiles" pathsep=" " />
        <script language="javascript">
            <![CDATA[
            var includes = "";
            var entitiesString = project.getProperty("persistence.persistence-unit.class");
            if (entitiesString) {
                var entities = entitiesString.split(",");
                for (entity in entities) {
                    if (entities[entity] != null && entities[entity] != "") {
                        includes += String(entities[entity]).replace(/\./g, '/') + ".java,";
                    }
                }
            }
            project.setProperty("entities.include", includes);
            ]]>
        </script>
        <mkdir dir="${project-root}/build/classes" />
        <javac includes="${entities.include}" srcdir="${project-root}/src" destdir="${classes-folder}" classpath="${cp}" debug="on" />
    </target>
    <target name="findAnnotations">
        <file name="annotated.xml" id="annotated.xml" />
        <echo file="annotated.xml" message="&lt;annotated-types/&gt;" />
        <path id="build.class.path">
            <fileset dir="${project-root}/WebContent/WEB-INF/lib" />
            <pathelement path="${classes-folder}" />
        </path>
        <pathconvert property="cp" refid="build.class.path" />
        <path id="srcfiles">
            <fileset dir="${project-root}/src">
                <include name="**/*.java" />
            </fileset>
        </path>
        <pathconvert property="srcfiles" refid="srcfiles" pathsep=" " />
        <path id="cfg-xml-path">
            <fileset file="${project-root}/src/hibernate.cfg.xml" />
        </path>
        <pathconvert property="cfg-xml" refid="cfg-xml-path" />
        <apt classpath="${cp}" 
            compile="false"
            factory="com.farata.cdb.annotations.processor.CDBFullAnnotationProcessor"
            srcdir="${project-root}/src"
            sourcepath="${project-root}/src">
            <option name="com.faratasystems.cdb.annotations.file" value="annotated.xml"/>
            <option name="com.faratasystems.cdb.configuration.file" value="${cfg-xml}"/>
            <include name="**/*.java"/>
        </apt>
    </target>
    <target name="compileServiceInterfaces">
        <path id="build.class.path">
            <fileset dir="${project-root}/WebContent/WEB-INF/lib" />
            <pathelement path="${classes-folder}" />
        </path>
        <pathconvert property="cp" refid="build.class.path" />
        <path id="srcfiles">
            <fileset dir="${project-root}/src">
                <include name="**/*.java" />
            </fileset>
        </path>
        <pathconvert property="srcfiles" refid="srcfiles" pathsep=" " />
        <xmlproperty file="annotated.xml" collapseAttributes="true" />
        <script language="javascript">
            <![CDATA[
            var includes = "";
            var typeNamesString = project.getProperty("annotated-types.annotated-type.name");
            if (typeNamesString) {
                var annotationNamesString = project.getProperty("annotated-types.annotated-type.annotations.annotation.name");
                var annotationNames = annotationNamesString.split(",");
                var typeNames = typeNamesString.split(",");
                for (annotationName in annotationNames) {
                    if (annotationNames[annotationName] != null && annotationNames[annotationName] != "") {
                        if (annotationNames[annotationName] == "clear.cdb.annotations.CX_Service") {
                            includes += String(typeNames[annotationName]).replace(/\./g, '/') + ".java,";
                        }
                    }
                }
            }
            project.setProperty("entities.include", includes);
            ]]>
        </script>
        <javac includes="${entities.include}" srcdir="${project-root}/src" destdir="${classes-folder}" classpath="${cp}" debug="on" />
    </target>
    <target name="generateDTOs">
        <xmlproperty file="annotated.xml" collapseAttributes="true" />
        <path id="build.class.path">
            <fileset dir="${project-root}/WebContent/WEB-INF/lib" />
            <pathelement path="${classes-folder}" />
        </path>
        <pathconvert property="cp" refid="build.class.path" />
        <path id="srcfiles">
            <fileset dir="${project-root}/src">
                <include name="**/*.java" />
            </fileset>
        </path>
        <pathconvert property="srcfiles" refid="srcfiles" pathsep=" " />
        <xslt classpathref="build.class.path" in="annotated.xml" style="src/service-dto-all.xsl" out="tmp.txt" force="true">
            <param name="outputFolder" expression="${project-root}src" />
            <param name="force" expression="${force.build}" />
        </xslt>
        <script language="javascript" src="${basedir}/scripts.js">
            <![CDATA[
                var includes = getServicesDTOs();
                includes += getServicesDTOSubclasses();
                project.setProperty("entities.include", includes == ""? "none":includes);
            ]]>
        </script>
        <javac includes="${entities.include}" srcdir="${project-root}/src" destdir="${classes-folder}" classpath="${cp}" debug="on" failonerror="false" />
    </target>
    <target name="generateServices">
        <xmlproperty file="annotated.xml" collapseAttributes="true" />
        <path id="build.class.path">
            <fileset dir="${project-root}/WebContent/WEB-INF/lib" />
            <pathelement path="${classes-folder}" />
        </path>
        <pathconvert property="cp" refid="build.class.path" />
        <path id="srcfiles">
            <fileset dir="${project-root}/src">
                <include name="**/*.java" />
            </fileset>
        </path>
        <pathconvert property="srcfiles" refid="srcfiles" pathsep=" " />
        <xslt classpathref="build.class.path" in="annotated.xml" style="src/service-impl-all.xsl" out="tmp.txt" force="true">
            <param name="outputFolder" expression="${project-root}src" />
            <param name="force" expression="${force.build}" />
        </xslt>
        <script language="javascript" src="${basedir}/scripts.js">
            <![CDATA[
            var includes = getServices();
            includes += getServicesSubclasses();
            project.setProperty("entities.include", includes == ""? "none":includes);
            ]]>
        </script>
        <javac includes="${entities.include}" srcdir="${project-root}/src" destdir="${classes-folder}" classpath="${cp}" debug="on" />
    </target>
    <target name="generateFlex">
        <xmlproperty file="annotated.xml" collapseAttributes="true" />
        <path id="build.class.path">
            <fileset dir="${project-root}/WebContent/WEB-INF/lib" />
            <pathelement path="${classes-folder}" />
        </path>
        <pathconvert property="cp" refid="build.class.path" />
        <path id="srcfiles">
            <fileset dir="${project-root}/src">
                <include name="**/*.java" />
            </fileset>
        </path>
        <pathconvert property="srcfiles" refid="srcfiles" pathsep=" " />
        <xslt classpathref="build.class.path" in="annotated.xml" style="flex_src/flex-all.xsl" out="tmp.txt" force="true">
            <param name="flexOutputFolder" expression="${flex-output-folder}" />
            <param name="javaSrcFolder" expression="${project-root}src" />
            <param name="force" expression="${force.build}" />
        </xslt>
        <xslt classpathref="build.class.path" in="annotated.xml" style="flex_src/application-all.xsl" out="tmp.txt" force="true">
            <param name="javaSrcFolder" expression="${project-root}src" />
            <param name="testFolder" expression="${project-root}test" />
            <param name="force" expression="${force.build}" />
        </xslt>
    </target>
    <target name="generateBlazeDSConfig">
        <xmlproperty file="annotated.xml" collapseAttributes="true" />
        <path id="build.class.path">
            <fileset dir="${project-root}/WebContent/WEB-INF/lib" />
            <pathelement path="${classes-folder}" />
        </path>
        <pathconvert property="cp" refid="build.class.path" />
        <path id="srcfiles">
            <fileset dir="${project-root}/src">
                <include name="**/*.java" />
            </fileset>
        </path>
        <pathconvert property="srcfiles" refid="srcfiles" pathsep=" " />
        <script language="javascript" src="${basedir}/scripts.js">
            <![CDATA[
            generateRemotingConfig();
            generateMessagingConfig();
            ]]>
        </script>
    </target>
</project>

Answer 1

我认为您可能需要提供有关项目结构的更多详细信息。你是如何打包你的项目的？ （它是否包含带有ejb模块封装的耳朵......）

很明显它是一个类加载问题。或者jar可能没有与最终可部署存档一起打包。解决方案最简单的方法是将common-logging.jar文件复制并粘贴到服务器的lib目录中。 （对于tomcat我相信它在catalina_home文件夹下......但我不确定）

Answer 2

您似乎已发布了Eclipse的.classpath元数据文件的内容，该文件定义了Eclipse在Eclipse 中构建项目时使用的类路径，但您还提到使用{{1}这意味着你也在使用Ant从IDE外部构建项目。

确保build.xml中的<javac>个任务也引用build.xml;除非您以某种方式配置构建脚本来执行此操作（可能通过从Eclipse生成build.xml），否则Ant将不会使用commons-logging.jar文件。