近日学习Easyui,发现非常好用,界面很美观。将学习的心得在此写下,这篇博客写SSh结合Easyui实现Datagrid的分页显示,其他的例如添加、修改、删除、批量删除等功能将在后面的博客一一写来。
首先看一下要实现的效果: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
01 |
<?xml version="1.0" encoding="UTF-8"?> |
02 |
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" |
03 |
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" |
04 |
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee |
05 |
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> |
06 |
07 |
<!-- Sttuts2过滤器 --> |
08 |
<filter> |
09 |
<filter-name>struts2</filter-name> |
10 |
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> |
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</filter> |
12 |
<filter-mapping> |
13 |
<filter-name>struts2</filter-name> |
14 |
<url-pattern>/*</url-pattern> |
15 |
</filter-mapping> |
16 |
17 |
<!-- 监听器Spring --> |
18 |
<listener> |
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<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> |
20 |
</listener> |
21 |
22 |
<!-- 定位applicationContext.xml的物理位置 --> |
23 |
<context-param> |
24 |
<param-name>contextConfigLocation</param-name> |
25 |
<param-value>classpath:applicationContext.xml</param-value> |
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</context-param> |
27 |
28 |
</web-app> |
5、applicationContext.xml的配置
01 |
<?xml version="1.0" encoding="UTF-8"?> |
02 |
<beans xmlns="http://www.springframework.org/schema/beans" |
03 |
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" |
04 |
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" |
05 |
xsi:schemaLocation="http://www.springframework.org/schema/beans |
06 |
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd |
07 |
http://www.springframework.org/schema/context |
08 |
http://www.springframework.org/schema/context/spring-context-2.5.xsd |
09 |
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd |
10 |
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> |
11 |
12 |
13 |
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<import resource="applicationContext_bean.xml"/> |
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<import resource="applicationContext_db.xml"/> |
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</beans> |
6、在com.model中创建模型类Student.java
01 |
package com.model; |
02 |
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public class Student { |
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String studentid;// 主键 |
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String name;// 姓名 |
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String gender;// 性别 |
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String age;// 年龄 |
08 |
09 |
public String getStudentid() { |
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return studentid; |
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} |
12 |
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public void setStudentid(String studentid) { |
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this.studentid = studentid; |
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} |
16 |
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public String getName() { |
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return name; |
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} |
20 |
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public void setName(String name) { |
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this.name = name; |
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} |
24 |
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public String getGender() { |
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return gender; |
27 |
} |
28 |
29 |
public void setGender(String gender) { |
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this.gender = gender; |
31 |
} |
32 |
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public String getAge() { |
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return age; |
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} |
36 |
37 |
public void setAge(String age) { |
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this.age = age; |
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} |
40 |
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} |
7、根据Student.java生成对应的映射文件Student.hbm.xml
01 |
<?xml version="1.0"?> |
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<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" |
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"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> |
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<!-- Generated 2013-6-23 23:31:47 by Hibernate Tools 3.4.0.CR1 --> |
05 |
<hibernate-mapping> |
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<class name="com.model.Student" table="STUDENT"> |
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<id name="studentid" type="java.lang.String"> |
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<column name="STUDENTID" /> |
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<generator class="assigned" /> |
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</id> |
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<property name="name" type="java.lang.String"> |
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<column name="NAME" /> |
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</property> |
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<property name="gender" type="java.lang.String"> |
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<column name="GENDER" /> |
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</property> |
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<property name="age" type="java.lang.String"> |
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<column name="AGE" /> |
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</property> |
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</class> |
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</hibernate-mapping> |
8、编写接口StudentService.java
1 |
package com.service; |
2 |
3 |
import java.util.List; |
4 |
5 |
public interface StudentService { |
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public List getStudentList(String page,String rows) throws Exception;//根据第几页获取,每页几行获取数据 |
7 |
public int getStudentTotal() throws Exception;//统计一共有多少数据 |
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} |
9、编写接口的实现类StudentServiceImpl.java
01 |
package com.serviceImpl; |
02 |
03 |
import java.util.List; |
04 |
05 |
import org.hibernate.SessionFactory; |
06 |
07 |
import com.service.StudentService; |
08 |
09 |
public class StudentServiceImpl implements StudentService { |
10 |
private SessionFactory sessionFactory; |
11 |
|
12 |
// 根据第几页获取,每页几行获取数据 |
13 |
public List getStudentList(String page, String rows) { |
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|
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//当为缺省值的时候进行赋值 |
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int currentpage = Integer.parseInt((page == null || page == "0") ? "1": page);//第几页 |
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int pagesize = Integer.parseInt((rows == null || rows == "0") ? "10": rows);//每页多少行 |
18 |
|
19 |
List list = this.sessionFactory.getCurrentSession().createQuery("from Student") |
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.setFirstResult((currentpage - 1) * pagesize).setMaxResults(pagesize).list(); |
21 |
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return list; |
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} |
24 |
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// 统计一共有多少数据 |
26 |
public int getStudentTotal() throws Exception { |
27 |
return this.sessionFactory.getCurrentSession().find("from Student").size(); |
28 |
} |
29 |
|
30 |
public SessionFactory getSessionFactory() { |
31 |
return sessionFactory; |
32 |
} |
33 |
34 |
public void setSessionFactory(SessionFactory sessionFactory) { |
35 |
this.sessionFactory = sessionFactory; |
36 |
} |
37 |
|
38 |
|
39 |
} |
10、配置连接数据库的配置文件applicationContext_db.xml
001 |
<?xml version="1.0" encoding="UTF-8"?> |
002 |
<beans xmlns="http://www.springframework.org/schema/beans" |
003 |
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" |
004 |
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" |
005 |
xsi:schemaLocation="http://www.springframework.org/schema/beans |
006 |
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd |
007 |
http://www.springframework.org/schema/context |
008 |
http://www.springframework.org/schema/context/spring-context-2.5.xsd |
009 |
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd |
010 |
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> |
011 |
012 |
013 |
<!-- 用Bean定义数据源 --> |
014 |
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" |
015 |
destroy-method="close"> |
016 |
<!-- 定义数据库驱动 --> |
017 |
<property name="driverClass"> |
018 |
<value>oracle.jdbc.driver.OracleDriver</value> |
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</property> |
020 |
<!-- 定义数据库URL --> |
021 |
<property name="jdbcUrl"> |
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<value>jdbc:oracle:thin:@localhost:1521:orcl</value> |
023 |
</property> |
024 |
<!-- 定义数据库的用户名 --> |
025 |
<property name="user"> |
026 |
<value>lhq</value> |
027 |
</property> |
028 |
<!-- 定义数据库的密码 --> |
029 |
<property name="password"> |
030 |
<value>lhq</value> |
031 |
</property> |
032 |
<property name="minPoolSize"> |
033 |
<value>1</value> |
034 |
</property> |
035 |
<property name="maxPoolSize"> |
036 |
<value>40</value> |
037 |
</property> |
038 |
<property name="maxIdleTime"> |
039 |
<value>1800</value> |
040 |
</property> |
041 |
<property name="acquireIncrement"> |
042 |
<value>2</value> |
043 |
</property> |
044 |
<property name="maxStatements"> |
045 |
<value>0</value> |
046 |
</property> |
047 |
<property name="initialPoolSize"> |
048 |
<value>2</value> |
049 |
</property> |
050 |
<property name="idleConnectionTestPeriod"> |
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<value>1800</value> |
052 |
</property> |
053 |
<property name="acquireRetryAttempts"> |
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<value>30</value> |
055 |
</property> |
056 |
<property name="breakAfterAcquireFailure"> |
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<value>true</value> |
058 |
</property> |
059 |
<property name="testConnectionOnCheckout"> |
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<value>false</value> |
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</property> |
062 |
063 |
</bean> |
064 |
065 |
<!--定义Hibernate的SessionFactory --> |
066 |
<bean id="sessionFactory" |
067 |
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> |
068 |
<!-- 定义SessionFactory必须注入dataSource --> |
069 |
<property name="dataSource"> |
070 |
<ref bean="dataSource" /> |
071 |
</property> |
072 |
<!-- 定义Hibernate的SessionFactory属性 --> |
073 |
<property name="hibernateProperties"> |
074 |
<props> |
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<prop key="hibernate.dialect"> |
076 |
org.hibernate.dialect.Oracle10gDialect |
077 |
</prop> |
078 |
</props> |
079 |
</property> |
080 |
081 |
<!-- 定义POJO的映射文件 --> |
082 |
<property name="mappingResources"> |
083 |
<list> |
084 |
<value>com/model/Student.hbm.xml</value> |
085 |
</list> |
086 |
</property> |
087 |
</bean> |
088 |
089 |
<!-- 配置事务拦截器 --> |
090 |
<bean id="transactionManager" |
091 |
class="org.springframework.orm.hibernate3.HibernateTransactionManager"> |
092 |
<property name="sessionFactory" ref="sessionFactory" /> |
093 |
</bean> |
094 |
095 |
<tx:advice id="txAdvice" transaction-manager="transactionManager"> |
096 |
<tx:attributes> |
097 |
<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 --> |
098 |
<tx:method name="delete*" propagation="REQUIRED" /> |
099 |
<tx:method name="update*" propagation="REQUIRED" /> |
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<tx:method name="*" propagation="SUPPORTS" read-only="true" /><!-- 其他方法为只读方法 --> |
101 |
</tx:attributes> |
102 |
</tx:advice> |
103 |
104 |
<aop:config> |
105 |
<aop:pointcut id="interceptorPointCuts" expression="execution(* com.serviceImpl..*.*(..))" /> <!-- 对应实现类接口的包的位置 --> |
106 |
<aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" /> |
107 |
</aop:config> |
108 |
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</beans> |
11、在控制层编写StudentAction.java类型
01 |
package com.action; |
02 |
03 |
import java.util.List; |
04 |
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import javax.servlet.http.HttpServletRequest; |
06 |
import javax.servlet.http.HttpServletResponse; |
07 |
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import net.sf.json.JSONObject; |
09 |
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import org.apache.log4j.Logger; |
11 |
import org.apache.struts2.ServletActionContext; |
12 |
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import com.service.StudentService; |
14 |
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public class StudentAction { |
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static Logger log = Logger.getLogger(StudentAction.class); |
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private JSONObject jsonObj; |
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private String rows;// 每页显示的记录数 |
19 |
private String page;// 当前第几页 |
20 |
private StudentService student_services;//String依赖注入 |
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|
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//查询出所有学生信息 |
23 |
public String getAllStudent() throws Exception { |
24 |
log.info("查询出所有学生信息"); |
25 |
|
26 |
List list = student_services.getStudentList(page, rows); |
27 |
this.toBeJson(list,student_services.getStudentTotal()); |
28 |
29 |
return null; |
30 |
} |
31 |
|
32 |
//转化为Json格式 |
33 |
public void toBeJson(List list,int total) throws Exception{ |
34 |
HttpServletResponse response = ServletActionContext.getResponse(); |
35 |
HttpServletRequest request = ServletActionContext.getRequest(); |
36 |
|
37 |
JSONObject jobj = new JSONObject();//new一个JSON |
38 |
jobj.accumulate("total",total );//total代表一共有多少数据 |
39 |
jobj.accumulate("rows", list);//row是代表显示的页的数据 |
40 |
41 |
response.setCharacterEncoding("utf-8");//指定为utf-8 |
42 |
response.getWriter().write(jobj.toString());//转化为JSOn格式 |
43 |
|
44 |
log.info(jobj.toString()); |
45 |
} |
46 |
|
47 |
48 |
public StudentService getStudent_services() { |
49 |
return student_services; |
50 |
} |
51 |
52 |
public void setStudent_services(StudentService student_services) { |
53 |
this.student_services = student_services; |
54 |
} |
55 |
56 |
public void setJsonObj(JSONObject jsonObj) { |
57 |
this.jsonObj = jsonObj; |
58 |
} |
59 |
60 |
public void setRows(String rows) { |
61 |
this.rows = rows; |
62 |
} |
63 |
64 |
public void setPage(String page) { |
65 |
this.page = page; |
66 |
} |
67 |
|
68 |
|
69 |
|
70 |
} |
12、编写Spring的依赖注入applicationContext_bean.xml配置文件
01 |
<?xml version="1.0" encoding="UTF-8"?> |
02 |
<beans xmlns="http://www.springframework.org/schema/beans" |
03 |
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" |
04 |
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" |
05 |
xsi:schemaLocation="http://www.springframework.org/schema/beans |
06 |
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd |
07 |
http://www.springframework.org/schema/context |
08 |
http://www.springframework.org/schema/context/spring-context-2.5.xsd |
09 |
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd |
10 |
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> |
11 |
|
12 |
<!-- 业务层Service --> |
13 |
<bean id="student_service" class="com.serviceImpl.StudentServiceImpl"> |
14 |
<property name="sessionFactory"> |
15 |
<ref bean="sessionFactory"></ref> |
16 |
</property> |
17 |
</bean> |
18 |
19 |
<!-- 控制层Action --> |
20 |
<bean id="student_action" class="com.action.StudentAction"> |
21 |
<property name="student_services"> |
22 |
<ref bean="student_service" /> |
23 |
</property> |
24 |
</bean> |
25 |
|
26 |
</beans> |
13、编写struts.xml配置文件
01 |
<?xml version="1.0" encoding="UTF-8"?> |
02 |
<!DOCTYPE struts PUBLIC |
03 |
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" |
04 |
"http://struts.apache.org/dtds/struts-2.0.dtd"> |
05 |
<struts> |
06 |
<package name="Easyui" extends="json-default"> |
07 |
<!-- 学生信息 --> |
08 |
<action name="getAllStudentAction" class="student_action" method="getAllStudent"> |
09 |
<result type="json"> </result> |
10 |
</action> |
11 |
</package> |
12 |
</struts> |
14、编写JSP----index.jsp
01 |
<%@ page language="java" pageEncoding="utf-8" isELIgnored="false"%> |
02 |
<% |
03 |
String path = request.getContextPath(); |
04 |
%> |
05 |
<%@ taglib prefix="s" uri="/struts-tags"%> |
06 |
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
07 |
<html> |
08 |
<head> |
09 |
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
10 |
<title>数字框</title> |
11 |
<!-- 引入Jquery --> |
12 |
<script type="text/javascript" src="<%=path%>/js/easyui/jquery-1.8.0.min.js" charset="utf-8"></script> |
13 |
<!-- 引入Jquery_easyui --> |
14 |
<script type="text/javascript" src="<%=path%>/js/easyui/jquery.easyui.min.js" charset="utf-8"></script> |
15 |
<!-- 引入easyUi国际化--中文 --> |
16 |
<script type="text/javascript" src="<%=path%>/js/easyui/locale/easyui-lang-zh_CN.js" charset="utf-8"></script> |
17 |
<!-- 引入easyUi默认的CSS格式--蓝色 --> |
18 |
<link rel="stylesheet" type="text/css" href="<%=path%>/js/easyui/themes/default/easyui.css" /> |
19 |
<!-- 引入easyUi小图标 --> |
20 |
<link rel="stylesheet" type="text/css" href="<%=path%>/js/easyui/themes/icon.css" /> |
21 |
22 |
<script type="text/javascript"> |
23 |
$(function() { |
24 |
$('#mydatagrid').datagrid({ |
25 |
title : 'datagrid实例', |
26 |
iconCls : 'icon-ok', |
27 |
width : 600, |
28 |
pageSize : 5,//默认选择的分页是每页5行数据 |
29 |
pageList : [ 5, 10, 15, 20 ],//可以选择的分页集合 |
30 |
nowrap : true,//设置为true,当数据长度超出列宽时将会自动截取 |
31 |
striped : true,//设置为true将交替显示行背景。 |
32 |
collapsible : true,//显示可折叠按钮 |
33 |
toolbar:"#tb",//在添加 增添、删除、修改操作的按钮要用到这个 |
34 |
url:'getAllStudentAction.action',//url调用Action方法 |
35 |
loadMsg : '数据装载中......', |
36 |
singleSelect:true,//为true时只能选择单行 |
37 |
fitColumns:true,//允许表格自动缩放,以适应父容器 |
38 |
//sortName : 'xh',//当数据表格初始化时以哪一列来排序 |
39 |
//sortOrder : 'desc',//定义排序顺序,可以是'asc'或者'desc'(正序或者倒序)。 |
40 |
remoteSort : false, |
41 |
frozenColumns : [ [ { |
42 |
field : 'ck', |
43 |
checkbox : true |
44 |
} ] ], |
45 |
pagination : true,//分页 |
46 |
rownumbers : true//行数 |
47 |
}); |
48 |
|
49 |
}); |
50 |
|
51 |
</script> |
52 |
53 |
</head> |
54 |
<body> |
55 |
<h2> |
56 |
<b>easyui的DataGrid实例</b> |
57 |
</h2> |
58 |
59 |
<table id="mydatagrid"> |
60 |
<thead> |
61 |
<tr> |
62 |
<th data-options="field:'studentid',width:100,align:'center'">学生学号</th> |
63 |
<th data-options="field:'name',width:100,align:'center'">姓名</th> |
64 |
<th data-options="field:'gender',width:100,align:'center'">性别</th> |
65 |
<th data-options="field:'age',width:100,align:'center'">年龄</th> |
66 |
</tr> |
67 |
</thead> |
68 |
</table> |
69 |
|
70 |
</body> |
71 |
</html> |
15、启动程序,输入http://localhost:8080/easyui/index.jsp进行测试
来自:http://blog.csdn.net/lhq13400526230/article/details/9158111