Invalid tld file: "/WEB-INF/tags/xxxt.tld", see JSP 2.2 specification section 7.3.1 for more details

错误描述

在jsp页面引入了自定义的TLD文件的时候,碰到了一个错误

Invalid tld file: "/WEB-INF/tags/xxxt.tld",see JSP 2.2 specification section 7.3.1 for more details

错误原因

不符合 JSP2.2 中对tags的规定。
规定说的是这个:

In the jsp-2_2

JSP.7.3.1 Identifying Tag Library Descriptors Tag library descriptor files have names that use the extension .tld,and the extension indicates a tag library descriptor file. When deployed inside a JAR file,the tag library descriptor files must be in the META-INF directory,or a subdirectory of it. When deployed directly into a web application,the tag library descriptor files must always be in the WEB-INF directory,or some subdirectory of it. TLD files should not be placed in /WEB-INF/classes or /WEB-INF/lib,and must not be placed inside /WEB-INF/tags or a subdirectory of it,unless named implicit.tld and intended to configure an implicit tag library with its JSP version and tlib-version.

the .tld file can't be in classes,lib,tags folder or subfolder.

意思是说,如果你使用的是jsp2.2就不能把tld文件放在 /WEB-INF/tags 以及其子目录下。
jsp版本和tomcat的版本是相关的。jsp版本和tomcat的版本对应关系如下:

Servlet Spec JSP Spec EL Spec WebSocket Spec JASPIC Spec Apache Tomcat Version Latest Released Version Supported Java Versions
4.0 2.3 3.0 1.1 1.1 9.0.x 9.0.1 (beta) 8 and later
3.1 2.3 3.0 1.1 1.1 8.5.x 8.5.23 7 and later
3.1 2.3 3.0 1.1 N/A 8.0.x (superseded) 8.0.47 (superseded) 7 and later
3.0 2.2 2.2 1.1 N/A 7.0.x 7.0.82 6 and later(7 and later for WebSocket)
2.5 2.1 2.1 N/A N/A 6.0.x (archived) 6.0.53 (archived) 5 and later
2.4 2.0 N/A N/A N/A 5.5.x (archived) 5.5.36 (archived) 1.4 and later
2.3 1.2 N/A N/A N/A 4.1.x (archived) 4.1.40 (archived) 1.3 and later
2.2 1.1 N/A N/A N/A 3.3.x (archived) 3.3.2 (archived) 1.1 and later

详情可查看:http://tomcat.apache.org/whichversion.html

解决办法

1.如果你的tld文件放在 /WEB-INF/tags目录下,而你不想改代码,那么,把tomcat换成apache-tomcat-7.0.55 或者以下的版本。(亲测可行)
2.如果你不想换tomcat就把 tld放在 /WEB-INF下。

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