Java 构建路径问题学习指南

我不明白为什么我会在下面出现这个错误，我已经包括了我所能知道的所有适当的JAR（我在下面包括了eclipses.classpath文件）。所有的类路径条目都很好地解决了。我错过了什么

无法解析javax.servlet.ServletContextListener类型。它是从“extends GuiceServletContextListener”行上的必需.class文件间接引用的

-

.Classpath

    <?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" path="src"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/jdk1.7.0_21">
        <attributes>
            <attribute name="owner.project.facets" value="java"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="oracle.eclipse.tools.glassfish.lib.system">
        <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="lib" path="guice-3.0/aopalliance.jar"/>
    <classpathentry kind="lib" path="guice-3.0/guice-3.0.jar"/>
    <classpathentry kind="lib" path="guice-3.0/guice-servlet-3.0.jar"/>
    <classpathentry kind="lib" path="guice-3.0/javax.inject.jar"/>
    <classpathentry kind="output" path="build/classes"/>
</classpath>

---

Eclipse需要连接到glassfish服务器才能正常工作

我会把它标记为正确的

    <?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" path="src"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/jdk1.7.0_21">
        <attributes>
            <attribute name="owner.project.facets" value="java"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="oracle.eclipse.tools.glassfish.lib.system">
        <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="lib" path="guice-3.0/aopalliance.jar"/>
    <classpathentry kind="lib" path="guice-3.0/guice-3.0.jar"/>
    <classpathentry kind="lib" path="guice-3.0/guice-servlet-3.0.jar"/>
    <classpathentry kind="lib" path="guice-3.0/javax.inject.jar"/>
    <classpathentry kind="output" path="build/classes"/>
</classpath>