struts2 整合 jQuery-easyUI之datagrid小例子

运行结果：

实体类:

package com.yjdgis.domain;

import java.util.Date;

public class Student {
    private Integer id;
    private Integer age;
    private String name;
    private Date birthday;
    private String className;
    private char sex;
    
    public Student(){ }
    public Student(Integer id, Integer age, String name, Date birthday, String className, char sex) {
        this.id = id;
        this.age = age;
        this.name = name;
        this.birthday = birthday;
        this.className = className;
        this.sex = sex;
    }

    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public Integer getAge() {
        return age;
    }
    public void setAge(Integer age) {
        this.age = age;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    public String getClassName() {
        return className;
    }
    public void setClassName(String className) {
        this.className = className;
    }
    public char getSex() {
        return sex;
    }
    public void setSex(char sex) {
        this.sex = sex;
    }
    
}

dao接口:

package com.yjdgis.dao;

import java.util.List;

public interface StudentDao {
	public List<Object> getStudent(int page,int rows);
	public int getTotalPages(int rows);
}

　dao.impl(模拟了一个数据库)

package com.yjdgis.dao.impl;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.yjdgis.dao.StudentDao;
import com.yjdgis.domain.Student;

public class StudentDaoBean implements StudentDao {
	private static List<Student> list ;
	static{
//模拟数据
		list = new ArrayList<Student>();
		for(int i=1;i<=110023;i++){
			Student st = new Student(i,i,"NAME"+i,new Date(),"ClassName"+i,i%2==0? '0':'1');
			list.add(st);
		}
	}

	@Override
	public List<Object> getStudent(int page, int rows) {
		System.out.println(page +" : "+ rows);
		List<Object> students = new ArrayList<Object>();
		for(int i=page*rows ;i<rows*(page+1); i++ ){
			students.add(list.get(i));
		}
//获取数据
		return students;
	}

	@Override
	public int getTotalPages(int rows) {
		int size = list.size();
		//int pages = size%rows==0?  size/rows: size/rows+1; 
		return size;
//获取总的条数
	}

}

　　不那么麻烦了，没有了server层 直接应用dao层

Action：

package com.yjdgis.action;

import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.interceptor.ServletRequestAware;
import com.opensymphony.xwork2.ActionSupport;
import com.yjdgis.dao.StudentDao;
import com.yjdgis.dao.impl.StudentDaoBean;

public class StudentAction extends ActionSupport implements ServletRequestAware {
    private static final long serialVersionUID = 1L;
    private StudentDao studentDao;
    private HttpServletRequest request;
    private int total;
    private List<Object> rows;
    
    public StudentAction(){
        System.out.println("Action初始化了");
    }
    
    public int getTotal() {
        return total;
    }
    public void setTotal(int total) {
        this.total = total;
    }

    public List<Object> getRows() {
        return rows;
    }
    public void setRows(List<Object> rows) {
        this.rows = rows;
    }

    @Override
    public void setServletRequest(HttpServletRequest request) {
        this.request = request;
    }
    
    public String execute(){
        int page = Integer.parseInt(request.getParameter("page"));
        int row = Integer.parseInt(request.getParameter("rows"));
        studentDao=new StudentDaoBean();

        this.rows = studentDao.getStudent(page, row);
        this.total = studentDao.getTotalPages(row);
        System.out.println("总页数："+this.total);
        return "success";
    }
}

strut2配置

<?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="dataGrid" extends="json-default">
        <action name="studentAction" class="com.yjdgis.action.StudentAction" method="execute">
            <result name="success" type="json"/>
        </action>
    </package>
</struts>    

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
  <display-name></display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>
          org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
      </filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>*.action</url-pattern>
  </filter-mapping>
</web-app>

jsp:

<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>easyUi-dataGrid</title>
<link rel="stylesheet" type="text/css" href="easyUi/easyui.css">
<script type="text/javascript" src="js/jquery-1.8.0.min.js"></script>
<script type="text/javascript" src="js/jquery.easyui.min.js"></script>
<script type="text/javascript">
    var xmlhttp;
    function verify(){
        if(window.XMLHttpRequest){        
            xmlhttp = new XMLHttpRequest();        
            if(xmlhttp.overrideMimeType){            
                xmlhttp.overrideMimeType("text/xml");        
            }    
        }else if(window.ActiveXObject){      
            var activerxName = ["MSXML2.XMLHTTP","Microsoft.XMLHTTP"];        
            for(var i=0;i<activerxName.length;i++){            
                try{                 
                    xmlhttp = new ActiveXObject(activerxName[i]);              
                    break;            
                }catch(e){ 
                }        
            }    
        }
        if(!xmlhttp){        
            alert("XMLHttpRequest对象创建失败");        
            return;    
        }
        xmlhttp.onreadystatechange = callback;    
        xmlhttp.open("POST","studentAction.action?page=1&rows=5","true");    
        xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");    
        xmlhttp.send();
    }
    function callback(){  
        if(xmlhttp.readyState == 4){        
            if(xmlhttp.status == 200){        
                var oBook = eval('(' + xmlhttp.responseText + ')');
                $.messager.alert('test jsonData',xmlhttp.responseText);        
            }   
        }
    }
    
    $(function(){
        $("#tt").datagrid({
            title:'DataGrid例子',
            width:600,
            height:400,
            pageSize:5,
            pageList:[5,10,15,20],
            nowrap:false,
            striped:true,
            collapsible:true,
            url:'studentAction.action',
            loadMsg:'数据加载中...',
            sortName:'code',
            sortOrder:'desc',
            remoteSort:false,

            pagination :true,//可以不要下面的 注释部分  要显示中文 可以easyui-lang-zh_CN.js
            frozenColumns:[[     
                  {field:'ck',checkbox:true}
            ]],
            columns:[[     
                  {title:'学号',field:'id',width:'50',rowspan:2,align:'center'},
                  {title:'姓名',field:'name',width:'60',rowspan:2,align:'center'},
                  {title:'性别',field:'sex',width:'50',rowspan:2,align:'center'},
                  {title:'年龄',field:'age',width:'50',rowspan:2,align:'center'},     
                  {title:'出生日期',field:'birthday',width:'120',rowspan:2,align:'center'},     
                  {title:'班级',field:'className',width:'100',rowspan:2,align:'center'}    
            ]],
            pagination:true,    
            rownumbers:true
        });

　　    /* $('#tt').datagrid('getPager').pagination({    
            displayMsg:'当前显示从{from}到{to}共{total}记录',    
            onBeforeRefresh:function(pageNumber, pageSize){     
                $(this).pagination('loading');     
                    //alert('pageNumber:'+pageNumber+',pageSize:'+pageSize);     
                $(this).pagination('loaded');    
            },   
         });
        */        
    })();

</script>
</head>
<body>
<a href="javascript:vodi(0)" onclick="verify()" class="easyui-linkbutton">json</a>
   
 <h2><b>DataGrid</b></h2>   

 <table id="tt"></table>
 <hr>
 <form action="">
     <input type="submit" value="提 交">
 </form>
</body>
</html>

说明：返回的json格式的数据格式：

{
    "total": 2,
    "rows": [
        {
            "userCode": "kf123456",
            "userName": "屌丝",
            "attorney": "屌丝",
            "addressee": "文哥哥",
            "userAddr": "大幅度舒服点",
            "tele2": "18987651525",
            "applyDate": "2013-06-27 09:11:38"
        },
        {
            "userCode": "kf_123456",
            "userName": "白秋霜",
            "attorney": "白秋霜",
            "addressee": "文哥哥",
            "userAddr": "江湖难填恨海，剑出伤我心怀",
            "tele2": "18987651525",
            "applyDate": "2013-06-27 09:09:27"
        }
    ]
}