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

Tomcat 8.x

1. conf/logging.properties 修改：

# To see debug messages in TldLocationsCache, uncomment the following line:
org.apache.jasper.compiler.TldLocationsCache.level = FINE

2. 重啓Tomcat，啓動成功後，打開日誌文件catalina.out，看到很多行如下的日誌：

No TLD files were found in.....xxx.jar

3. 把所有2中出現的jar加到排除掃描的列表中，打開catalina.properties, 添加進去:

	tomcat.util.scan.StandardJarScanFilter.jarsToSkip=\

Linux下可使用如下命令把相關的Jar導出到一個文件中：

egrep "No TLD files were found in \[file:[^\]+\]" catalina.out -o | egrep "[^]/]+.jar" -o | sort | uniq | sed -e 's/.jar/.jar,\\/g' > skips.txt

4.  重啓Tomat，可看到之前的提示消息已經沒有了，重新註釋掉步驟1中的代碼，完成修改。