您的位置:首页 > 产品设计 > UI/UE

实例:SSh结合Easyui实现Datagrid的分页显示

2016-06-15 09:27 836 查看
要实现的效果:当每页显示5行数据:





当每页显示10行数据,效果如下:



具体步骤:

1、下载Easyui,并搭建环境。可参照博客 http://blog.csdn.net/lhq13400526230/article/details/9148299

2、搭建SSH工程,整个工程的目录结构如图所示:



3、在Oracle数据库中创建表Student。并且输入下面6行数据,因为添加操作还没有实现,所以先在数据库表中添加数据。默认设定的值是每行5个数据,所以请至少输入6行数据,便于分页的测试。



4、web.xml的配置

[html] view
plain copy

<?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过滤器 -->

<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>

<!-- 监听器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

[html] view
plain copy

<?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中创建模型类Student.Java

[java] view
plain copy

package com.model;

public class Student {

String studentid;// 主键

String name;// 姓名

String gender;// 性别

String age;// 年龄

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、根据Student.java生成对应的映射文件Student.hbm.xml

[html] view
plain copy

<?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 class="assigned" />

</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、编写接口StudentService.java

[java] view
plain copy

package com.service;

import java.util.List;

public interface StudentService {

public List getStudentList(String page,String rows) throws Exception;//根据第几页获取,每页几行获取数据

public int getStudentTotal() throws Exception;//统计一共有多少数据

}

9、编写接口的实现类StudentServiceImpl.java

[java] view
plain copy

package com.serviceImpl;

import java.util.List;

import org.hibernate.SessionFactory;

import com.service.StudentService;

public class StudentServiceImpl implements StudentService {

private SessionFactory sessionFactory;

// 根据第几页获取,每页几行获取数据

public List getStudentList(String page, String rows) {

//当为缺省值的时候进行赋值

int currentpage = Integer.parseInt((page == null || page == "0") ? "1": page);//第几页

int pagesize = Integer.parseInt((rows == null || rows == "0") ? "10": rows);//每页多少行

List list = this.sessionFactory.getCurrentSession().createQuery("from Student")

.setFirstResult((currentpage - 1) * pagesize).setMaxResults(pagesize).list();

return list;

}

// 统计一共有多少数据

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、配置连接数据库的配置文件applicationContext_db.xml

[html] view
plain copy

<?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定义数据源 -->

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"

destroy-method="close">

<!-- 定义数据库驱动 -->

<property name="driverClass">

<value>oracle.jdbc.driver.OracleDriver</value>

</property>

<!-- 定义数据库URL -->

<property name="jdbcUrl">

<value>jdbc:oracle:thin:@localhost:1521:orcl</value>

</property>

<!-- 定义数据库的用户名 -->

<property name="user">

<value>lhq</value>

</property>

<!-- 定义数据库的密码 -->

<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>

<!--定义Hibernate的SessionFactory -->

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<!-- 定义SessionFactory必须注入dataSource -->

<property name="dataSource">

<ref bean="dataSource" />

</property>

<!-- 定义Hibernate的SessionFactory属性 -->

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.Oracle10gDialect

</prop>

</props>

</property>

<!-- 定义POJO的映射文件 -->

<property name="mappingResources">

<list>

<value>com/model/Student.hbm.xml</value>

</list>

</property>

</bean>

<!-- 配置事务拦截器 -->

<bean id="transactionManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<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开头的方法才能执行增删改操作 -->

<tx:method name="delete*" propagation="REQUIRED" />

<tx:method name="update*" propagation="REQUIRED" />

<tx:method name="*" propagation="SUPPORTS" read-only="true" /><!-- 其他方法为只读方法 -->

</tx:attributes>

</tx:advice>

<aop:config>

<aop:pointcut id="interceptorPointCuts" expression="execution(* com.serviceImpl..*.*(..))" /> <!-- 对应实现类接口的包的位置 -->

<aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" />

</aop:config>

</beans>

11、在控制层编写StudentAction.java类型

[java] view
plain copy

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;// 每页显示的记录数

private String page;// 当前第几页

private StudentService student_services;//String依赖注入

//查询出所有学生信息

public String getAllStudent() throws Exception {

log.info("查询出所有学生信息");

List list = student_services.getStudentList(page, rows);

this.toBeJson(list,student_services.getStudentTotal());

return null;

}

//转化为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一个JSON

jobj.accumulate("total",total );//total代表一共有多少数据

jobj.accumulate("rows", list);//row是代表显示的页的数据

response.setCharacterEncoding("utf-8");//指定为utf-8

response.getWriter().write(jobj.toString());//转化为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、编写spring的依赖注入applicationContext_bean.xml配置文件

[html] view
plain copy

<?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">

<!-- 业务层Service -->

<bean id="student_service" class="com.serviceImpl.StudentServiceImpl">

<property name="sessionFactory">

<ref bean="sessionFactory"></ref>

</property>

</bean>

<!-- 控制层Action -->

<bean id="student_action" class="com.action.StudentAction">

<property name="student_services">

<ref bean="student_service" />

</property>

</bean>

</beans>

13、编写struts.xml配置文件

[html] view
plain copy

<?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">

<!-- 学生信息 -->

<action name="getAllStudentAction" class="student_action" method="getAllStudent">

<result type="json"> </result>

</action>

</package>

</struts>

14、编写JSP----index.jsp

[html] view
plain copy

<%@ 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>数字框</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国际化--中文 -->

<script type="text/javascript" src="<%=path%>/js/easyui/locale/easyui-lang-zh_CN.js" charset="utf-8"></script>

<!-- 引入easyUi默认的CSS格式--蓝色 -->

<link rel="stylesheet" type="text/css" href="<%=path%>/js/easyui/themes/default/easyui.css" />

<!-- 引入easyUi小图标 -->

<link rel="stylesheet" type="text/css" href="<%=path%>/js/easyui/themes/icon.css" />

<script type="text/javascript">

$(function() {

$('#mydatagrid').datagrid({

title : 'datagrid实例',

iconCls : 'icon-ok',

width : 600,

pageSize : 5,//默认选择的分页是每页5行数据

pageList : [ 5, 10, 15, 20 ],//可以选择的分页集合

nowrap : true,//设置为true,当数据长度超出列宽时将会自动截取

striped : true,//设置为true将交替显示行背景。

collapsible : true,//显示可折叠按钮

toolbar:"#tb",//在添加 增添、删除、修改操作的按钮要用到这个

url:'getAllStudentAction.action',//url调用Action方法

loadMsg : '数据装载中......',

singleSelect:true,//为true时只能选择单行

fitColumns:true,//允许表格自动缩放,以适应父容器

//sortName : 'xh',//当数据表格初始化时以哪一列来排序

//sortOrder : 'desc',//定义排序顺序,可以是'asc'或者'desc'(正序或者倒序)。

remoteSort : false,

frozenColumns : [ [ {

field : 'ck',

checkbox : true

} ] ],

pagination : true,//分页

rownumbers : true//行数

});

});

</script>

</head>

<body>

<h2>

<b>easyui的DataGrid实例</b>

</h2>

<table id="mydatagrid">

<thead>

<tr>

<th data-options="field:'studentid',width:100,align:'center'">学生学号</th>

<th data-options="field:'name',width:100,align:'center'">姓名</th>

<th data-options="field:'gender',width:100,align:'center'">性别</th>

<th data-options="field:'age',width:100,align:'center'">年龄</th>

</tr>

</thead>

</table>

</body>

</html>

15、启动程序,输入http://localhost:8080/easyui/index.jsp进行测试
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: