近日學習Easyui，發現非常好用，界面很美觀。將學習的心得在此寫下，這篇博客寫SSh結合Easyui實現Datagrid的分頁顯示，其他的例如添加、修改、刪除、批量刪除等功能將在後面一一寫來。
首先看一下要實現的效果：當每頁顯示5行數據：
當每頁顯示10行數據，效果如下：
具體步驟：
1、下載Easyui，並搭建環境。
2、搭建SSH工程，整個工程的目錄結構如圖所示：
3、在Oracle數據庫中創建表Student。並且輸入下面6行數據，因為添加操作還沒有實現，所以先在數據庫表中添加數據。默認設定的值是每行5個數據，所以請至少輸入6行數據，便於分頁的測試。
4、web.xml的配置
<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <!-- Sttuts2過濾器--> <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>/*</url-pattern> </filter-mapping> <!-- 監聽器Spring --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 定位applicationContext.xml的物理位置--> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param></web-app>
5、applicationContext.xml的配置
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><import resource="applicationContext_bean.xml"/><import resource="applicationContext_db.xml"/></beans>
6、在com.model中創建模型類Student.Java
package com.model;public class Student { String studentid;// 主鍵String name;// 姓名String gender;// 性別String age;// 年齡public String getStudentid() { return studentid; } public void setStudentid(String studentid) { this.studentid = studentid; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getGender() { return gender; } public void setGender(String gender) { this.gender = gender; } public String getAge() { return age; } public void setAge(String age) { this.age = age; }} 7、根據Student.java生成對應的映射文件Student.hbm.xml
<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!-- Generated 2013-6-23 23:31:47 by Hibernate Tools 3.4.0.CR1 --><hibernate-mapping> <class name="com.model.Student" table="STUDENT"> <id name="studentid" type="java.lang.String"> <column name="STUDENTID" /> <generator /> </id> <property name="name" type="java.lang.String"> <column name="NAME" /> </property> <property name="gender" type="java.lang.String"> <column name="GENDER" /> </property> <property name="age" type="java.lang.String"> <column name="AGE" /> </property> </class></hibernate-mapping>
8、編寫接口StudentService.java
package com.service;import java.util.List;public interface StudentService { public List getStudentList(String page,String rows) throws Exception;//根據第幾頁獲取，每頁幾行獲取數據public int getStudentTotal() throws Exception;//統計一共有多少數據} 9、編寫接口的實現類StudentServiceImpl.java
package com.serviceImpl;import java.util.List;import org.hibernate.SessionFactory;import com.service.StudentService;public class StudentServiceImpl implements StudentService { private SessionFactory sessionFactory; // 根據第幾頁獲取，每頁幾行獲取數據public List getStudentList(String page, String rows) { //當為缺省值的時候進行賦值int currentpage = Integer.parseInt((page == null || page == "0") ? "1": page);//第幾頁int pagesize = Integer.parseInt((rows == null || rows == "0") ? "10": rows);//每頁多少行List list = this.sessionFactory.getCurrentSession().createQuery("from Student") .setFirstResult((currentpage - 1) * pagesize).setMaxResults(pagesize).list(); return list; } // 統計一共有多少數據public int getStudentTotal() throws Exception { return this.sessionFactory.getCurrentSession().find("from Student").size(); } public SessionFactory getSessionFactory() { return sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } } 10、配置連接數據庫的配置文件applicationContext_db.xml
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <!-- 用Bean定義數據源--> <bean id="dataSource" destroy-method="close"> <!-- 定義數據庫驅動--> <property name="driverClass"> <value>oracle.jdbc.driver.OracleDriver</value> </property> <!-- 定義數據庫URL --> <property name="jdbcUrl"> <value>jdbc:oracle:thin:@localhost:1521:orcl</value> </property> <!-- 定義數據庫的用戶名--> <property name="user"> <value>lhq</value> </property> <!-- 定義數據庫的密碼--> <property name="password"> <value>lhq</value> </property> <property name="minPoolSize"> <value>1</value> </property> <property name="maxPoolSize"> <value>40</value> </property> <property name="maxIdleTime"> <value>1800</value> </property> <property name="acquireIncrement"> <value>2</value> </property> <property name="maxStatements"> <value>0</value> </property> <property name="initialPoolSize"> <value>2</value> </property> <property name="idleConnectionTestPeriod"> <value>1800</value> </property> <property name="acquireRetryAttempts"> <value>30</value> </property> <property name="breakAfterAcquireFailure"> <value>true</value> </property> <property name="testConnectionOnCheckout"> <value>false</value> </property> </bean> <!--定義Hibernate的SessionFactory --> <bean id="sessionFactory"> <!-- 定義SessionFactory必須注入dataSource --> <property name="dataSource"> <ref bean="dataSource" /> </property> <!-- 定義Hibernate的SessionFactory屬性--> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect"> org.hibernate.dialect.Oracle10gDialect </prop> </props> </property> <!-- 定義POJO的映射文件--> <property name="mappingResources"> <list> <value>com/model/Student.hbm.xml</value> </list> </property> </bean> <!-- 配置事務攔截器--> <bean id="transactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="save*" propagation="REQUIRED" /><!-- 只有一save、delete、update開頭的方法才能執行增刪改操作--> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="*" propagation="SUPPORTS" read-only="true" /><!-- 其他方法為只讀方法--> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="interceptorPointCuts" expression="execution(* com.serviceImpl..*.*(..))" /> <!-- 對應實現類接口的包的位置--> <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" /> </aop:config></beans>
11、在控制層編寫StudentAction.java類型
package com.action;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.sf.json.JSONObject;import org.apache.log4j.Logger;import org.apache.struts2.ServletActionContext;import com.service.StudentService;public class StudentAction { static Logger log = Logger.getLogger(StudentAction.class); private JSONObject jsonObj; private String rows;// 每頁顯示的記錄數private String page;// 當前第幾頁private StudentService student_services;//String依賴注入//查詢出所有學生信息public String getAllStudent() throws Exception { log.info("查詢出所有學生信息"); List list = student_services.getStudentList(page, rows); this.toBeJson(list,student_services.getStudentTotal()); return null; } //轉化為Json格式public void toBeJson(List list,int total) throws Exception{ HttpServletResponse response = ServletActionContext.getResponse(); HttpServletRequest request = ServletActionContext.getRequest(); JSONObject jobj = new JSONObject();//new一個JSON jobj.accumulate("total",total );//total代表一共有多少數據jobj.accumulate("rows", list);//row是代表顯示的頁的數據response.setCharacterEncoding("utf-8");//指定為utf-8 response.getWriter().write(jobj.toString());//轉化為JSOn格式log.info(jobj.toString()); } public StudentService getStudent_services() { return student_services; } public void setStudent_services(StudentService student_services) { this.student_services = student_services; } public void setJsonObj(JSONObject jsonObj) { this.jsonObj = jsonObj; } public void setRows(String rows) { this.rows = rows; } public void setPage(String page) { this.page = page; } } 12、編寫spring的依賴注入applicationContext_bean.xml配置文件
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <!-- 業務層Service --> <bean id="student_service"> <property name="sessionFactory"> <ref bean="sessionFactory"></ref> </property> </bean> <!-- 控制層Action --> <bean id="student_action"> <property name="student_services"> <ref bean="student_service" /> </property> </bean> </beans>
13、編寫struts.xml配置文件
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"><struts> <package name="Easyui" extends="json-default"> <!-- 學生信息--> <action name="getAllStudentAction" method="getAllStudent"> <result type="json"> </result> </action> </package></struts>
14、編寫JSP----index.jsp
<%@ page language="java" pageEncoding="utf-8" isELIgnored="false"%><% String path = request.getContextPath();%><%@ taglib prefix="s" uri="/struts-tags"%><!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>數字框</title><!-- 引入Jquery --><script type="text/javascript" src="<%=path%>/js/easyui/jquery-1.8.0.min.js" charset="utf-8"></script><!-- 引入Jquery_easyui --><script type="text/javascript" src="<%=path%>/js/easyui/jquery.easyui.min.js" charset="utf-8"></script><!-- 引入easyUi國際化--中文--><script type="text/javascript" src="<%=path%>/js/easyui/locale/easyui-lang-zh_CN.js" charset="utf-8"></script><!-- 引入easyUi默認的CSS格式--藍色--><link rel="stylesheet" type="text/css" href="<%=path%>/js/easyui/themes/default/easyui.css" /><!-- 引入easyUi小圖標--><link rel="stylesheet" type="text/css" href="<%=path%>/js/easyui/themes/icon.css" /><script type="text/javascript"> $(function() { $('#mydatagrid').datagrid({ title : 'datagrid實例', iconCls : 'icon-ok', width : 600, pageSize : 5,//默認選擇的分頁是每頁5行數據pageList : [ 5, 10, 15, 20 ],//可以選擇的分頁集合nowrap : true,//設置為true，當數據長度超出列寬時將會自動截取striped : true,//設置為true將交替顯示行背景。 collapsible : true,//顯示可折疊按鈕toolbar:"#tb",//在添加增添、刪除、修改操作的按鈕要用到這個url:'getAllStudentAction.action',//url調用Action方法loadMsg : '數據裝載中......', singleSelect:true,//為true時只能選擇單行fitColumns:true,//允許表格自動縮放，以適應父容器//sortName : 'xh',//當數據表格初始化時以哪一列來排序//sortOrder : 'desc',//定義排序順序，可以是'asc'或者'desc'（正序或者倒序）。 remoteSort : false, frozenColumns : [ [ { field : 'ck', checkbox : true } ] ], pagination : true,//分頁rownumbers : true//行數}); }); </script> </head><body> <h2> <b>easyui的DataGrid實例</b> </h2> <table id="mydatagrid"> <thead> <tr> <th data-options="field:'studentid',width:100,align:'center'">學生學號</th> <th data-options="field:'name',width:100,align:'center'">姓名</th> <th data-options="field:'gender',width:100,align:'center'">性別</th> <th data-options="field:'age',width:100,align:'center'">年齡</th> </tr> </thead> </table> </body></html>15、啟動程序，輸入http://localhost:8080/easyui/index.jsp進行測試。
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。