<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@page import="com.jyc.damain.Cat"%>
<%@ taglib prefix="bean" uri="http://struts.apache.org/tags-bean" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
<h3>bean tags</h3>
<%
request.setAttribute("a","ok");
Cat c = new Cat();
c.setName1("tom");
c.setAge("1");
//c.setCount(1);
request.setAttribute("cat",c);
%>
<!-- bean:write 用于输出信息 -->
<bean:write name="a"/><br/>
<bean:define id="kk" name="a" value="hello" ></bean:define>
<bean:write name="a"/>
<h3> get对象</h3>
<bean:write name="cat" property="name1"/>
<bean:write name="cat" property="age"/><br>
<h3>bean:message</h3>
</body>
</html>
---------------
<body>
<%
int i = 2;
Cat c = new Cat();
c.setAge("1");
c.setName1("c1");
Cat c2 = new Cat();
c2.setAge("2");
c2.setName1("c2");
Cat c3 = new Cat();
c3.setAge("3");
c3.setName1("c3");
ArrayList<Cat> al= new ArrayList<Cat>();
al.add(c);
al.add(c2);
al.add(c3);
request.setAttribute("num",i);
request.setAttribute("cats",al);
%>
<logic:notEmpty name="cats">
<logic:iterate id="mycat" name="cats">
<bean:write name="mycat" property="name1"/>=
<bean:write name="mycat" property="age"/><br/>
${mycat.name1 } == ${mycat.age }
cats is not null<br/>
</logic:iterate>
</logic:notEmpty>
<br/>
<h3>logic compare big or small</h3>
<logic:iterate id="cc" name="cats" >
<logic:greaterThan name="cc" value="${num }" property="age">
<bean:write name="cc" property="name1"/> dayu ${num }<br/>
</logic:greaterThan><br/>
<logic:equal value="${num }" name="cc" property="age">
<%--name="对象名称" property="属性名称" value="比较值" --%>
等于${num }的猫是：<bean:write name="cc" property="name1"/><br/>
</logic:equal>
</logic:iterate><br/>
<logic:empty name="ee">ee is null</logic:empty><br/>
i的值:${num }<br/>
<h3></h3>
<logic:match value="" ></logic:match>
</body>
---------------
<body>
<h3>logic2.jsp</h3>
<%
HashMap course = new HashMap();
course.put("math",new Integer(120));
course.put("english",new Integer(122));
course.put("chinese",new Integer(100));
course.put("physics",new Integer(111));
course.put("chymistry",new Integer(129));
course.put("biology",new Integer(111));
course.put("politics",new Integer(98));
course.put("geography",new Integer(132));
course.put("history",new Integer(98));
request.setAttribute("course",course);
%>
<bean:size id="course_length" name="course"/>
<%=course_length.toString()%><br>
<logic:present name="course">
<logic:iterate id="c" name="course" length="<%=course_length.toString()%>" offset="3" indexId="course_id">
<bean:write name="c" property="key"/>:<br>
</logic:iterate>
</logic:present>
<h3></h3>
</body>
public class Cat {
private String name;
private String age;
/**
* @return the name
*/
public String getName1() {
return name;
}
/**
* @param name the name to set
*/
public void setName1(String name) {
this.name = name;
}
/**
* @return the age
*/
public String getAge() {
return age;
}
/**
* @param age the age to set
*/
public void setAge(String age) {
this.age = age;
}
}