struts2的分页标签

1、准备tld文件

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd">
  <description><![CDATA["To make it easier to access dynamic data;
                        the Apache Struts framework includes a library of custom tags.
                        The tags interact with the framework's validation and internationalization features;
                        to ensure that input is correct and output is localized.
                        The Struts Tags can be used with JSP FreeMarker or Velocity."]]></description>
  <display-name>LetGo</display-name>
  <tlib-version>1.0</tlib-version>
  <short-name>voice</short-name>
  <uri>/page-tags</uri>
  <tag>
    <description><![CDATA[Render a paging link tag]]></description>
    <name>paging</name>
    <tag-class>com.page.PagingAction</tag-class>
    <body-content>empty</body-content>
    <attribute>
      <description><![CDATA[current page index]]></description>
      <name>currPage</name>
      <required>true</required>
      <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
      <description><![CDATA[The total page]]></description>
      <name>totalPage</name>
      <required>true</required>
      <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
      <description><![CDATA[The page max]]></description>
      <name>pageMax</name>
      <required>true</required>
      <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
      <description><![CDATA[total link number for show]]></description>
      <name>count</name>
      <required>true</required>
      <rtexprvalue>false</rtexprvalue>
    </attribute>
  </tag>
</taglib>

2、写相应的处理类 继承的是 jsp-api.jar 中 SimpleTagSupport，在该类中同时也可以设置各个按钮的js事件....

 package com.page;

 import java.io.IOException;

 import javax.servlet.jsp.JspException;
 import javax.servlet.jsp.JspWriter;
 import javax.servlet.jsp.tagext.SimpleTagSupport;

 import com.opensymphony.xwork2.ActionContext;

 public class PagingAction extends SimpleTagSupport{

     private String currPage;
     private String totalPage;
     private String pageMax;
     private String count;

     /**
      * 返回
      * @return
      */
     public String getCurrPage() {
         return currPage;
     }

     /**
      * 设置
      * @param
      */
     public void setCurrPage(String currPage) {
         this.currPage = currPage;
     }

     /**
      * 返回
      * @return
      */
     public String getTotalPage() {
         return totalPage;
     }

     /**
      * 设置
      * @param
      */
     public void setTotalPage(String totalPage) {
         this.totalPage = totalPage;
     }

     /**
      * 返回
      * @return
      */
     public String getPageMax() {
         return pageMax;
     }

     /**
      * 设置
      * @param
      */
     public void setPageMax(String pageMax) {
         this.pageMax = pageMax;
     }

     /**
      * 返回
      * @return
      */
     public String getCount() {
         return count;
     }

     /**
      * 设置
      * @param
      */
     public void setCount(String count) {
         this.count = count;
     }

     @Override
     public void doTag() throws JspException, IOException {
         JspWriter write = getJspContext().getOut();
         StringBuffer sb = new StringBuffer();
         sb.append("<div>")
         .append("<button name=\"first\"><<</button>")
         .append("<button name=\"pre\"><</button>")
         .append("<input type=\"text\" name=\"inputName\" style=\"width: 45px;\"/>")
         .append("<label>"+getValueFromStack(this.getCurrPage())+"/共"+getValueFromStack(this.getTotalPage())+"</label>")
         .append("<button name=\"next\">></button>")
         .append("<button name=\"last\">>></button>")
         .append("<div>");
         write.write(sb.toString());
     }

     /**
      * 在值栈中取出值
      * @param str
      * @return
      */
     private String getValueFromStack(String str){
         //取出时不要加%{},直接是存放在值栈中的变量名，此处获取到str是从页面标签传过的值，jia
         //加%{}用以区分这个是从值栈中取出，对于不加%{}的属性表示表单提交的变量名称 相当于<input 中的 name属性
         //action中的get方法名与之相同，则可获取由标签传递的值
         if(str.startsWith("%{")){
             str = str.substring(2,str.length()-1);
         }
         return (String) ActionContext.getContext().getValueStack().findValue(str);
     }

 }

3、在jsp页面引用改标签

OK！！！