http://localhost:8080/SSHLearning/tags/ssh_sort
struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="com.ssh.tags" extends="struts-default" namespace="/tags">
<action name="ssh_*" class="com.ssh.actions.ExampleAction" method="{1}">
<result name="success">/WEB-INF/pages/tags/{1}.jsp</result>
</action>
</package>
</struts>
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ExampleAction
package com.ssh.actions;
import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.ssh.beans.Student;
public class ExampleAction extends ActionSupport {
List<Student> list;
private int type;//接受sort.jsp传来的排序信息 再传入sort.jsp的排序器中
//排序
public String sort(){
System.out.println("ExampleAction.sort");
Student s;
list=new ArrayList<Student>();
for (int i=99;i>90;i--) {
list.add(new Student(99-i, "rain", "男", i));
}
ActionContext.getContext().put("students", list);
return SUCCESS;
}
public void setType(int type) {
this.type = type;
}
public int getType() {
return type;
}
}
sort.jsp
这里basePath一定要写(tags/ssh_sort?type=1的url必须以项目根目录为起点)
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@taglib uri="/struts-tags" prefix="s"%> <% 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> <base href="<%=basePath%>"> </head> <body> <s:bean id="stuCompBean" name="com.ssh.util.StudentComparator"> <s:param name="type"> <s:property value="type" /> </s:param> </s:bean> <table> <tr> <td> 姓名 </td> <td> <a href="tags/ssh_sort?type=1"> 学号 </a> </td> <td> 性别 </td> <td> <a href="tags/ssh_sort?type=2">年龄</a> </td> </tr> <s:sort comparator="#stuCompBean" source="#students"> <s:iterator id="stu" status="stus"> <tr <s:if test="#stus.even">style="background: blue"</s:if>> <td> <s:property value="name" /> </td> <td> <s:property value="id" /> </td> <td> <s:property value="sex" /> </td> <td> <s:property value="age" /> </td> <td> count: <s:property value="#stus.count" /> index: <s:property value="#stus.index" /> </td> </tr> </s:iterator> </s:sort> </table> </body> </html>
StudentComparator
package com.ssh.util;
import java.util.Comparator;
import com.ssh.beans.Student;
public class StudentComparator implements Comparator<Student> {
private int type;
public int compare(Student s1, Student s2) {
System.out.println(type);
if (type == 1)
return s1.getAge() - s2.getAge();
else
return s1.getId() - s2.getId();
}
public void setType(int type) {
this.type = type;
}
}