关闭Tomcat的TLD扫描功能

Tomcat启动，显示“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”

这是因为Tomcat的TLD自动扫描功能，进入Tomcat目录下的conf/context
```
<?xml version='1.0' encoding='utf-8'?>
    <Context processTlds="false">
    <WatchedResource>WEB-INF/web.xml</WatchedResource>
</Context>
```
把Context processTlds设为false就可以了。