JSTL详解(一)

原文链接: http://www.cnblogs.com/james1207/p/3255913.html

将jstl.jar包导入到工程中

     jstldemo1.jsp

     <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
    <%@ page contentType="text/html; charset=gb2312" language="java" %>
    <c:set var="userName" value="jstl"/>
    <c:set value="16" var="age"/>
    欢迎您,<c:out value="${userName}"/><hr>
   <c:forEach var="i" begin="1" end="5">
   <font size=${i}>${i}</font>
   <br>
   </c:forEach>

   <c:if test="${age<18}">
    年龄过小

   </c:if>
   <br>
   </body>
   </html>

    web.xml
(使用java的标签库文件*.jar)
  
    <?xml version="1.0" encoding="ISO-8859-1"?>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee web-app_2_4.xsd"
    version="2.4">
  <display-name>jstl test</display-name>
  <description>
     jstl test
  </description>
</web-app>

(使用标签库文件*.tld)

  <?xml version="1.0" encoding="ISO-8859-1"?>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2eehttp://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">
 
  <taglib>
    <taglib-uri>http://java.sun.com/jstl/fmt</taglib-uri>
    <taglib-location>/WEB-INF/fmt.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>http://java.sun.com/jstl/fmt-rt</taglib-uri>
    <taglib-location>/WEB-INF/fmt-rt.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
    <taglib-location>/WEB-INF/c.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>http://java.sun.com/jstl/core-rt</taglib-uri>
    <taglib-location>/WEB-INF/c-rt.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>http://java.sun.com/jstl/sql</taglib-uri>
    <taglib-location>/WEB-INF/sql.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>http://java.sun.com/jstl/sql-rt</taglib-uri>
    <taglib-location>/WEB-INF/sql-rt.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>http://java.sun.com/jstl/x</taglib-uri>
    <taglib-location>/WEB-INF/x.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>http://java.sun.com/jstl/x-rt</taglib-uri>
    <taglib-location>/WEB-INF/x-rt.tld</taglib-location>
</taglib>
</web-app>

好了,一个最简单的包含有jstl的页面设计完成了。下面测试。
http://localhost:8080/jstl/jstldemo1.jsp
页面输出结果:

欢迎您,jstl


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年龄过小

转载于:https://www.cnblogs.com/james1207/p/3255913.html

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转载自blog.csdn.net/weixin_30672019/article/details/94987836