tomcat启动报错：At least one JAR was scanned for TLDs yet contained no TLDs.

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转自：http://blog.csdn.net/yangsen251024/article/details/21952613

http://love-love-l.blog.163.com/blog/static/2107830420131159580327/

At least one JAR was scanned for TLDs yet contained no TLDs.

Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. 

Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
 

tomcat 7对EL表达式的语法要求比较严格，例如"${owner.new}"因包含关键字new就会导致解析出错。 
问题是出来了，怎么解决呢？有三种，如下： 
第一种：严格遵守java规范，修改对象的属性名称，要求不包含java关键字; 
第二种：修改EL表达式，例如"${owner.new}"可以修改为"${owner['new']}"; 

1.调整Tomcat对应类的log级别

修改${tomcat}/conf/log4j.properties

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