我正在使用 Xerces-for-Android:https ://code.google.com/p/xerces-for-android/
如果我将源代码复制到一个简单的测试项目(java 项目,而不是 android 项目)中,我可以毫无问题地运行我的 xml 验证器测试。
当我从源文件制作一个 jar 然后在我的类路径而不是源中使用它时,NoClassDefFoundError
尽管文件存在于 jar 中,但我还是得到了。
以下是错误消息:
java.lang.ExceptionInInitializerError
at mf.org.apache.xerces.impl.dv.SchemaDVFactory.getInstance(Unknown Source)
at mf.org.apache.xerces.impl.dv.SchemaDVFactory.getInstance(Unknown Source)
at mf.org.apache.xerces.impl.xs.XMLSchemaLoader.reset(Unknown Source)
at mf.org.apache.xerces.impl.xs.XMLSchemaLoader.loadGrammar(Unknown Source)
at mf.org.apache.xerces.impl.xs.XMLSchemaLoader.loadGrammar(Unknown Source)
at mf.org.apache.xerces.jaxp.validation.XMLSchemaFactory.newSchema(Unknown Source)
at mf.javax.xml.validation.SchemaFactory.newSchema(Unknown Source)
at xml.MFXMLUtil.validate(MFXMLUtil.java:33)
at xml.MFXMLTester.main(MFXMLTester.java:8)
Caused by: java.lang.RuntimeException: internal error
at mf.org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl.applyFacets1(Unknown Source)
at mf.org.apache.xerces.impl.dv.xs.BaseSchemaDVFactory.createBuiltInTypes(Unknown Source)
at mf.org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl.createBuiltInTypes(Unknown Source)
at mf.org.apache.xerces.impl.dv.xs.SchemaDVFactoryImpl.<clinit>(Unknown Source)
... 9 more
下面是我制作 jar 的 ant 脚本:
<project name="XercesForAndroid" default="dist" basedir=".">
<description>
Builds jar for Xerces-For-Android
</description>
<!-- set global properties for this build -->
<property name="src" location="src"/>
<property name="build" location="build"/>
<property name="dist" location="dist"/>
<target name="init">
<!-- Create the build directory structure used by compile -->
<mkdir dir="${build}"/>
</target>
<target name="compile" depends="clean, init" description="compile the source " >
<!-- Compile the java code from ${src} into ${build} -->
<javac verbose="true" target="1.6" srcdir="${src}" destdir="${build}"/>
</target>
<target name="dist" depends="compile"
description="generate the distribution" >
<!-- Create the distribution directory -->
<mkdir dir="${dist}/lib"/>
<!-- Put everything in ${build} into the .jar file -->
<jar jarfile="${dist}/lib/Xerces-For-Android.jar" basedir="${build}"/>
</target>
<target name="clean"
description="clean up" >
<!-- Delete the ${build} and ${dist} directory trees -->
<delete dir="${build}"/>
<delete dir="${dist}"/>
</target>
</project>
类文件存在于 jar 中。我是否需要在清单中做任何特别的事情,还是我遗漏了一些明显的东西?