javax.naming.NamingException，Tomcat7 和 Struts2 无法通过 JNDI 访问数据库资源

Question

我正在使用 Struts2 框架 eclipse 开发新的 Web 应用程序，并且我已经使用 Hibernate 映射了 db 结构。问题是，当我执行“列表”操作时，框架会返回此错误:

    Struts Problem Report    Struts has detected an unhandled exception:    Messages:       This context must be accessed through a java: URL    Unable to lookup JNDI name [java:comp/env/jdbc/main]    File:   org/apache/naming/SelectorContext.java    Line number:    776

The server.xml is:

<?xml version="1.0" encoding="UTF-8"?>
<Server port="8005" shutdown="SHUTDOWN">
    <Listener SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/>
    <Listener className="org.apache.catalina.core.JasperListener"/>
    <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/>
    <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
    <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/>

    <GlobalNamingResources>
        <Resource auth="Container" defaultAutoCommit="false" driverClassName="net.sourceforge.jtds.jdbc.Driver" maxActive="200" maxIdle="100" maxWait="20000" name="jdbc/main" password="########" type="javax.sql.DataSource" url="jdbc:jtds:sqlserver://10.4.1.85/SBAGRU_DEV" username="****"/>

    </GlobalNamingResources>
    <Service name="Catalina">
        <Connector connectionTimeout="2000" executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>

        <Connector SSLEnabled="true" clientAuth="false" keystoreFile="C:\jpeople.bin" keystorePass="gesbanke" keystoreType="PKCS12" maxThreads="200" port="8443" protocol="HTTP/1.1" scheme="https" secure="true" sslProtocol="SSL"/>

        <!--<Connector port="8009" protocol="AJP/1.3" redirectPort="8443"/> -->
        <Engine defaultHost="localhost" name="Catalina">
            <Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true" xmlNamespaceAware="false" xmlValidation="false"> 
                <Context docBase="mag0" path="/mag0" reloadable="true" source="org.eclipse.jst.jee.server:mag0">
                    <ResourceLink global="jdbc/main" name="jdbc/main" type="javax.sql.DataSource" />
                </Context>
            </Host>
        </Engine>
    </Service>
</Server>

我也 hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<Server port="8005" shutdown="SHUTDOWN">
    <Listener SSLEngine="on" className="org.apache.catalina.core.AprLifecycleListener"/>
    <Listener className="org.apache.catalina.core.JasperListener"/>
    <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/>
    <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
    <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/>

    <GlobalNamingResources>
        <Resource auth="Container" defaultAutoCommit="false" driverClassName="net.sourceforge.jtds.jdbc.Driver" maxActive="200" maxIdle="100" maxWait="20000" name="jdbc/main" password="########" type="javax.sql.DataSource" url="jdbc:jtds:sqlserver://10.4.1.85/SBAGRU_DEV" username="****"/>

    </GlobalNamingResources>
    <Service name="Catalina">
        <Connector connectionTimeout="2000" executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>

        <Connector SSLEnabled="true" clientAuth="false" keystoreFile="C:\jpeople.bin" keystorePass="******" keystoreType="PKCS12" maxThreads="200" port="8443" protocol="HTTP/1.1" scheme="https" secure="true" sslProtocol="SSL"/>

        <!--<Connector port="8009" protocol="AJP/1.3" redirectPort="8443"/> -->
        <Engine defaultHost="localhost" name="Catalina">
            <Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true" xmlNamespaceAware="false" xmlValidation="false"> 
                <Context docBase="mag0" path="/mag0" reloadable="true" source="org.eclipse.jst.jee.server:mag0">
                    <ResourceLink global="jdbc/main" name="jdbc/main" type="javax.sql.DataSource" />
                </Context>
            </Host>
        </Engine>
    </Service>
</Server>

有什么建议可以在哪里看吗？我真的要疯了!

Answer 1

我找到了 解决方案 ，以及 真正的问题 .我在Eclipse中编辑server.xml，并没有看到真正的发布结果。出于奇怪的原因，eclipse 删除了真实 server.xml 中的资源链接，但在 eclipse View 中显示了链接。所以我谷歌搜索了一整天，我发现我必须在 WEB-INF 目录下的 context.xml 文件中添加:

<?xml version="1.0" encoding="UTF-8"?> 
<Context antiJARLocking="true" path="">
<ResourceLink global="jdbc/main" name="jdbc/main" type="javax.sql.DataSource" /> 
</Context>