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創建自己的taglib 並打包入jar
1. Create a TLD (tag library descriptor) file namedmy-tags.tld. For
more information, see Creating
a Tag Library Descriptor.
例如：
<taglib>
<display-name>Raptor JSP Taglib</display-name>
<tlib-version>1.0</tlib-version>
<jspversion>2.0</jspversion>
<short-name>r</short-name>
<uri>https://ebay.com/raptor</uri>
<tag>
<name>deferredFragment</name>
<tagclass>com.ebay.raptor.fragment.jsp.DeferredFragmentTag</tagclass>
<body-content>scriptless</body-content>
<!--dynamic-attributes>true</dynamic-attributes-->
<attribute>
<name>afterRender</name>
<type>String</type>
<required>false</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
<attribute>
<name>beforeRender</name>
<type>String</type>
<required>false</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
<attribute>
<name>dependency</name>
<type>Object</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>fragmentDependencies</name>
<type>String</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>delay</name>
<type>int</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>timeoutFragment</name>
<type>String</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>timeoutURL</name>
<type>String</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>id</name>
<type>String</type>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>inline</name>
<type>boolean</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>outerElement</name>
<type>String</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>style</name>
<type>String</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>styleClass</name>
<type>String</type>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>
</taglib>
2. Create a directory containing the compiled Java tag handler class files used in your tag library.
3. Create
a sub-directory of the directory you created in step 2 and call it META-INF.
注意my-tag.tld必須放在META-INF裏，這也是web container回去search tld文件的位置
4. Copy the my-tags.tld file
you created in step
1 into the META-INF directory
you created in step
3
5. Archive your compiled Java class files into a jar file
6.Copy the jar file
into the WEB-INF/lib directory of the Web application that uses your tag library.
有些文檔說需要在web.xml 中提供對tag library 的引用才可以在JSP中使用，如下：
<taglib> <taglib-uri>myjar.tld</taglib-uri> <taglib-location> /WEB-INF/lib/myTagLibrary.jar </taglib-location> </taglib>但實際情況是，至少在Tomcat 和 Geronimo 服務器中，不需要上麵的配置，服務器可以自己找到Jar裏的tld文件，可能不同的服務器其實現不一樣吧。
7.Reference the tag library in your JSP. For example:
<%@ taglib prefix="r" uri="https://ebay.com/raptor"%>
<r:includeRaptorJS />
參考：
https://docs.oracle.com/cd/E15051_01/wls/docs103/taglib/admin.html
https://www.ibm.com/developerworks/cn/java/j-jsp07233/index.html
最後更新：2017-04-03 14:54:20