如果在jdk1.4下运行，web-inf下包括了javax.servlet.jsp.jar，这个jar包是jdk1.4下jsp编译的jar包，这个包导致1.5 jdk 读取standard.jar中的class报错。

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Unable to read TLD "META-INF/c-1_0.tld" from JAR file "file:/C:/jakarta-tomcat-5.5.4/webapps/springapp/WEB-INF/lib/standard.jar": org.apache.jasper.JasperException: Failed to load or instantiate TagLibraryValidator class: org.apache.taglibs.standard.tlv.JstlCoreTLV