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public class MyTag2 extends SimpleTagSupport { @Override public void doTag() throws JspException, IOException { JspWriter out = getJspContext().getOut(); out.print("<h1>你好啊,我是自定义标签</h1>"); } } |
<tag> <name>tag2</name> <tag-class>com.atguigu.web.tag.MyTag2</tag-class> <body-content>empty</body-content> </tag> |
<a:if test=””>
标签体
</a:if>
public class IfTag extends SimpleTagSupport { private boolean test; public void setTest(boolean test) { this.test = test; } @Override public void doTag() throws JspException, IOException { if(test){ getJspBody().invoke(null); } } } |
<tag> <name>if</name> <tag-class>com.atguigu.web.tag.IfTag</tag-class> <body-content>tagdependent</body-content> <attribute> <name>test</name> <required>true</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> |
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