springmvc+mybatis+easyui分页

道德三黄五帝，功名夏侯商周。五霸七雄闹春秋，顷刻兴亡过手。清时几行名姓，北芒无数荒丘。前人播种后人收，说什么原创与否。

今天和大家分享一下springmvc+mybatis+easyui的分页实现。springmvc，mybatis的优缺点不做太多敖述大家都比较了解了，ssm框架整合的例子网上也有很多了，为什么还要写这篇文章那，主要是觉得大多过于零散配置方式又是千差万别，总结一下本文希望对遇到此问题的人有所帮助，前人播种后人收。当然程序开发没有觉得正确，谁也说不出一个正确的实现第N行代码是什么，由于水平有限，难免有纰漏之处，希望大家多多指点。

正文开始之前和大家说说为什么选择easyui，个人从13年开始管理系统前端技术使用easyui非常多，easyui很对得起easy这个词，上手很容易，浏览器兼容性优良，文档内容完善且有中文，datagrid请求数据参数简单方便。

本文应用到技术相关版本如下：

技术思路：

1.  用Springmvc构建 Web应用程序的全功能 MVC 模块

2.  ORM框架选用mybatis，mybatis相对ibatis增加了mapper功能，大大简化了开发的工作量，但是spring和mybatis整合时没有了类似整合ibatis时的queryForList(String
statementName,Object parameterObject, int skipResults, intmaxResults)方法，对于数据范围的控制需要借助mybatis的Interceptor实现。

3.  结合思路2中提到的特点，需要定义StatementHandler类型的Interceptor，同时本实例将分页相关的查询参数封装为PageUtil类。在该拦截器中判断如果参数类型为PageUtil则需要对sql进行处理，将其构造为分页模式的sql，oracle可用利用rownum，mysql利用limit函数。同时我们还可以在拦截器中获取到查询数据的总记录数，这样是相对于spring整合ibatis的又一方便之处。

4.  PageUtil中封装分页相关的参数。由于easyui在请求时使用rows（Int类型）表示每页显示的记录数，page表示当前页，而响应时需要使用rows（List类型）表示查询结果，total表示记录数，所以PageUtil中的setRows，getRows方法不能简单的依靠IDE自动生成了。同时为了方便将PageUtil作为了控制层返回值，所以PageUtil类还需注意对其转换为符合easyuidatagrid标准的json格式时，不必要参数的控制。

5.  Spring自动扫描mybatis的xml文件，自动扫描mapper类，service层控制事务。

程序代码如下：

1.   Maven pom.xml文件内容如下

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.asiainfo</groupId>
	<artifactId>cbar</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>war</packaging>
	<name>bomcreport2</name>
	<properties>
		<!-- spring版本号 -->
		<spring.version>4.0.2.RELEASE</spring.version>
		<!-- mybatis版本号 -->
		<mybatis.version>3.2.6</mybatis.version>
		<!-- log4j日志文件管理包版本 -->
		<slf4j.version>1.7.7</slf4j.version>
		<log4j.version>1.2.17</log4j.version>
	</properties>

	<dependencies>
			<dependency>
		    <groupId>org.apache.maven.plugins</groupId>
		    <artifactId>maven-resources-plugin</artifactId>
		    <version>2.4.1</version>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
			<!-- 表示开发的时候引入，发布的时候不会加载此包 -->
			<scope>test</scope>
		</dependency>
		<!-- spring核心包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-oxm</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
			<version>${spring.version}</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<!-- mybatis核心包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${mybatis.version}</version>
		</dependency>
		<!-- mybatis/spring包 -->
			<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
		<dependency>
			<groupId>commons-dbcp</groupId>
			<artifactId>commons-dbcp</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!-- JSTL标签类 -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
		<!-- 日志文件管理包 -->
		<!-- log start -->
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>${log4j.version}</version>
		</dependency>

		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${slf4j.version}</version>
		</dependency>

		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<!-- log end -->
		<!-- 上传组件包 -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>1.3.1</version>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.4</version>
		</dependency>
		<dependency>
			<groupId>commons-codec</groupId>
			<artifactId>commons-codec</artifactId>
			<version>1.9</version>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.0.1</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.9.2</version>
        </dependency>
		<dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.5.0</version>
        </dependency>
		<dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>
	</dependencies>
	<build>
		<defaultGoal>compile</defaultGoal>
		<sourceDirectory>src/main/java</sourceDirectory>
		<resources>
			<resource>
				<directory>src/main/java</directory>
				<excludes>
					<exclude>**/*.java</exclude>
				</excludes>
			</resource>
		</resources>
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.3.2</version>
				<configuration>
					<source>1.6</source>
					<target>1.6</target>
				</configuration>
			</plugin>
			<plugin>
				<artifactId>maven-war-plugin</artifactId>
				<version>2.2</version>
				<configuration>
					<warSourceDirectory>${basedir}/WebRoot</warSourceDirectory>
					<version>3.0</version>
					<failOnMissingWebXml>false</failOnMissingWebXml>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

2.   spring-config.xml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:p="http://www.springframework.org/schema/p"
     xmlns:tx="http://www.springframework.org/schema/tx"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/tx
         http://www.springframework.org/schema/tx/spring-tx.xsd
         http://www.springframework.org/schema/aop
         http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <context:annotation-config />
    <!-- 自动扫描com.asia包先相关类 -->
    <context:component-scan base-package="com.asia" >
        <!-- <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> -->
    </context:component-scan>

    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:base.properties" />
    </bean>
    <!-- 定义数据源 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
        <property name="driverClassName" value="${driverClassName}" />
        <property name="url" value="${DBTUrl}" />
        <property name="username" value="${DBUser}" />
        <property name="password" value="${DBPassword}" />
        <!-- 初始化连接大小 -->
        <property name="initialSize" value="${initialSize}"></property>
        <!-- 连接池最大数量 -->
        <property name="maxActive" value="${maxActive}"></property>
        <!-- 连接池最大空闲 -->
        <property name="maxIdle" value="${maxIdle}"></property>
        <!-- 连接池最小空闲 -->
        <property name="minIdle" value="${minIdle}"></property>
        <!-- 获取连接最大等待时间 -->
        <property name="maxWait" value="${maxWait}"></property>
    </bean>

    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描mapping.xml文件  -->
        <property name="mapperLocations" value="classpath:mapping/*.xml"></property>
        <property name="plugins">
        	<array>
		      <bean class="com.asia.util.mybatispage.PageInterceptor">
		        <property name="properties">
		          <value>
		            databaseType=oracle
		          </value>
		        </property>
		      </bean>
		    </array>
        </property>
    </bean>  

   <!--  DAO接口所在包名，Spring会自动查找其下的类   -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.asia.*.mapper" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>  

    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx   -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <tx:advice id="userTxAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="delete*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" no-rollback-for="java.lang.RuntimeException"/>
			<tx:method name="add*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" />
			<tx:method name="insert*" propagation="REQUIRES_NEW" read-only="false" rollback-for="java.lang.Exception" />
			<tx:method name="update*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception" />
			<tx:method name="modify*" propagation="REQUIRES_NEW" read-only="false" rollback-for="java.lang.Exception" />
			<tx:method name="find*" propagation="SUPPORTS"/>
			<tx:method name="get*" propagation="SUPPORTS"/>
			<tx:method name="select*" propagation="SUPPORTS"/>
		</tx:attributes>
	</tx:advice>

	<aop:config>
		<aop:pointcut id="pc" expression="execution(public * com.asia.*.service.*.*(..))" /> <!-- 把事务控制在Service层 -->
		<aop:advisor pointcut-ref="pc" advice-ref="userTxAdvice" />
	</aop:config>
</beans>

3.   spring-servlet.xml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:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="
        http://www.springframework.org/schema/util
        http://www.springframework.org/schema/util/spring-util-3.0.xsd
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> -->
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:p="http://www.springframework.org/schema/p"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
	<mvc:annotation-driven />
	<!-- <context:annotation-config /> -->
	<context:component-scan base-package="com.asia.*.controller">
	<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /></context:component-scan>

	<!-- <context:component-scan base-package="com.asia.*.controller"  /> -->
<!-- 	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp" />
 -->	<!-- <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>  

    启动Spring MVC的注解功能，完成请求和注解POJO的映射
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter" />json转换器
            </list>
        </property>
    </bean>  -->
<!-- 	<bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:order="3">
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
		<property name="contentType" value="text/html" />
		<property name="prefix" value="/" />
		<property name="suffix" value=".jsp" />
	</bean> -->

	<!-- <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
	    <property name="mediaTypes">
	        <map>
	            <entry key="atom" value="application/atom+xml"/>
	            <entry key="html" value="text/html"/>
	            <entry key="json" value="application/json"/>
	        </map>
	    </property>
	    <property name="viewResolvers">
	        <list>
	            <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>
	            <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
	                <property name="prefix" value="/WEB-INF/"/>
	                <property name="suffix" value=".jsp"/>
	            </bean>
	        </list>
	    </property>
	    <property name="defaultViews">
	        <list>
	            <bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView"/>
	        </list>
	    </property>
	</bean> -->
</beans>

4.   web.xml文件

<?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"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<display-name>cbar</display-name>
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			classpath:spring-config.xml
		</param-value>
	</context-param>
	<listener>
		<listener-class>
			org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>
	<filter>
		<filter-name>Encoding</filter-name>
		<filter-class>
			org.springframework.web.filter.CharacterEncodingFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>utf8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>Encoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	<servlet>
		<servlet-name>spring</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet
		</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring-servlet.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>spring</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
	<error-page>
		<exception-type>java.lang.Exception</exception-type>
		<location>/error.jsp</location>
	</error-page>
	<welcome-file-list>
		<welcome-file>report/report.jsp</welcome-file>
	</welcome-file-list>
</web-app>

5.   PageUtil类

package com.asia.util.mybatispage;

import java.util.List;

import com.fasterxml.jackson.annotation.JsonIgnore;

public class PageUtil {

	private int rows;

	private int total;

	private int page;

	private String orderStr;

	private String sort;

	private String order;

	private Object queryObj;

	private List<?> data;

	@JsonIgnore
	public String getOrderStr() {
		orderStr = "";
		if (!org.springframework.util.StringUtils.isEmpty(order)) {
			String[] orders = order.split(",");
			String[] sorts = sort.split(",");
			for (int i = 0; i < sorts.length; i++) {
				orderStr += sorts[i] + " " + orders[i] + ", ";
			}
			orderStr = orderStr.endsWith(", ") ? orderStr.substring(0, orderStr.length() - 2) : orderStr;
		}
		return orderStr;
	}

	@JsonIgnore
	public int getPageSize() {
		return rows;
	}

	public List<?> getRows(){
		return data;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}

	public int getTotal() {
		return total;
	}

	public void setTotal(int total) {
		this.total = total;
	}

	@JsonIgnore
	public int getPage() {
		return page;
	}

	public void setPage(int page) {
		this.page = page;
	}

	@JsonIgnore
	public String getSort() {
		return sort;
	}

	public void setSort(String sort) {
		this.sort = sort;
	}

	@JsonIgnore
	public String getOrder() {
		return order;
	}

	public void setOrder(String order) {
		this.order = order;
	}

	@JsonIgnore
	public Object getQueryObj() {
		return queryObj;
	}

	public void setQueryObj(Object queryObj) {
		this.queryObj = queryObj;
	}

	public void setOrderStr(String orderStr) {
		this.orderStr = orderStr;
	}

	public void setData(List<?> data) {
		this.data = data;
	}

	@Override
	public String toString() {
		return "PageUtil [rows=" + rows + ", total=" + total + ", page=" + page
				+ ", orderStr=" + orderStr + ", sort=" + sort + ", order="
				+ order + ", queryObj=" + queryObj + ", data=" + data + "]";
	}

}

6.   Mybatis过滤器PageInterceptor类

package com.asia.util.mybatispage;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import java.util.Properties;

import org.apache.ibatis.executor.parameter.ParameterHandler;
import org.apache.ibatis.executor.statement.RoutingStatementHandler;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Plugin;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.scripting.defaults.DefaultParameterHandler;

import com.asia.util.ReflectUtil;

/**
 * 分页拦截器
 *
 * @author SCY
 *
 * @CreateTime 2016年2月19日下午2:21:26
 *
 * @Vsersion 1.0
 */
@Intercepts({@Signature(method = "prepare", type = StatementHandler.class, args = {Connection.class})} )
public class PageInterceptor implements Interceptor {

	private String databaseType;

	@Override
	public Object intercept(Invocation invocation) throws Throwable {
		final RoutingStatementHandler handler = (RoutingStatementHandler) invocation.getTarget();
		final StatementHandler delegate = (StatementHandler) ReflectUtil.getFieldValue(handler, "delegate");
		final BoundSql boundSql = delegate.getBoundSql();
        final Object obj = boundSql.getParameterObject();

        //如果参数类型为自定义的PageUtil类型则执行分页处理
        if (obj instanceof PageUtil) {
            final PageUtil page = (PageUtil) obj;
            MappedStatement mappedStatement = (MappedStatement) ReflectUtil.getFieldValue(delegate, "mappedStatement");
            Connection connection = (Connection) invocation.getArgs()[0];
            final String sql = boundSql.getSql();//获取原sql
            final String pageSql = this.getPageSql(page, sql);//转换为分页SQL
            System.out.println(pageSql);
            //获取总记录数
            int rowCount = getRowCount(page, mappedStatement, connection);
            System.out.println("rowCount:"+rowCount);
            page.setTotal(rowCount);
            ReflectUtil.setFieldValue(boundSql, "sql", pageSql);
        }
        return invocation.proceed();
	}

	private String getCountSql(String sql) {
		return "select count(*) from (" + sql+") a";
	}

	/**
	 * 生成分页数据sql
	 * @param page
	 * @param sql
	 * @return
	 */
	private String getPageSql(PageUtil page, String sql) {
        final StringBuffer sqlBuffer = new StringBuffer(sql);
        if ("mysql".equalsIgnoreCase(databaseType)) {
            return getMysqlPageSql(page, sqlBuffer);
        } else if ("oracle".equalsIgnoreCase(databaseType)) {
            return getOraclePageSql(page, sqlBuffer);
        }
        return sqlBuffer.toString();
    }

	/**
	 * 生产mysql数据分页sql
	 * @param page
	 * @param sqlBuffer
	 * @return
	 */
	private String getMysqlPageSql(PageUtil page, StringBuffer sqlBuffer) {
		int offset = (page.getPage() - 1) * page.getPageSize() ;
        sqlBuffer.append(" limit ").append(offset).append(",").append(page.getPageSize());
        return sqlBuffer.toString();
    }

    /**
     * 获取Oracle数据库的分页查询语句
     */
    private String getOraclePageSql(PageUtil page, StringBuffer sqlBuffer) {
    	System.out.println(page);
        int offset = (page.getPage() - 1) * page.getPageSize() + 1;
        System.out.println(offset);
        sqlBuffer.insert(0, "select u.*, rownum r from (").append(") u where rownum < ")
                .append(offset + page.getPageSize());
        sqlBuffer.insert(0, "select * from (").append(") where r >= ").append(offset);
        return sqlBuffer.toString();
    }

	/**
	 * 获取总数据量
	 * @param page
	 * @param mappedStatement
	 * @param connection
	 * @return
	 * @throws SQLException
	 */
	private int getRowCount(PageUtil page, MappedStatement mappedStatement, Connection connection) throws SQLException {
		int totalRecord = 0;
		BoundSql boundSql = mappedStatement.getBoundSql(page);
		String sql = boundSql.getSql();
		String countSql = this.getCountSql(sql);
		List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
		BoundSql countBoundSql = new BoundSql(mappedStatement.getConfiguration(), countSql, parameterMappings, page);
		ParameterHandler parameterHandler = new DefaultParameterHandler(mappedStatement, page, countBoundSql);
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try {
		   pstmt = connection.prepareStatement(countSql);
		   parameterHandler.setParameters(pstmt);
		   rs = pstmt.executeQuery();
		   if (rs.next()) {
			   totalRecord = rs.getInt(1);
		   }
		}  finally {
		   try {
		      if (rs != null)
		          rs.close();

		   } finally{
			   if (pstmt != null)
		        pstmt.close();
		   }
		}
		return totalRecord;
    }

    @Override
	public Object plugin(Object target) {
		return Plugin.wrap(target, this);
	}

	@Override
	public void setProperties(Properties properties) {
		this.databaseType = properties.getProperty("databaseType");
	}
}

以下相关内容为样例程序代码，已简单的用户信息管理为例

7.   UserInfo类

package com.asia.demo.bean;

public class UserInfo {

	private int id;
	private String uname;
	private String birthday;
	private String sex;
	private String address;
	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getUname() {
		return uname;
	}

	public void setUname(String uname) {
		this.uname = uname;
	}

	public String getBirthday() {
		return birthday;
	}

	public void setBirthday(String birthday) {
		this.birthday = birthday;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	@Override
	public String toString() {
		return "UserInfo [id=" + id + ", uname=" + uname + ", birthday="
				+ birthday + ", sex=" + sex + ", address=" + address + "]";
	}

}

8.   UserController类

package com.asia.demo.controller;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import com.asia.demo.bean.UserInfo;
import com.asia.demo.service.IUserService;
import com.asia.util.mybatispage.PageUtil;

@Controller
@RequestMapping("/user")
public class UserController {
	@Resource
	private IUserService userService;

	@RequestMapping(value="/searchUser")
	public @ResponseBody PageUtil search(UserInfo uesrInfo, PageUtil pu) {
		pu.setQueryObj(uesrInfo);//设置查询条件
		List<UserInfo> data= userService.searchUser(pu);
		pu.setData(data);//设置反馈结果
		return pu;
	}

	public IUserService getUserService() {
		return userService;
	}

	public void setUserService(IUserService userService) {
		this.userService = userService;
	}

}

9.   UserInfoMapper类

package com.asia.demo.mapper;

import java.util.List;

import org.springframework.stereotype.Repository;

import com.asia.demo.bean.UserInfo;
import com.asia.util.mybatispage.PageUtil;

@Repository("userInfoMapper")
public interface UserInfoMapper {

	public List<UserInfo> queryUser();

	public List<UserInfo> searchUser(PageUtil spu);
}

10.  Mybatis配置文件UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.asia.demo.mapper.UserInfoMapper">
	<!-- 查询所有记录 -->
	<select id="queryUser" resultType="com.asia.demo.bean.UserInfo">
		select id, uname, birthday, sex, address from userinfo
	</select>
	<select id="searchUser" resultType="com.asia.demo.bean.UserInfo" parameterType="com.asia.util.mybatispage.PageUtil">
		select id, uname, birthday, sex, address from userinfo
		<where>
			<if test="queryObj.uname != null">
				AND uname = #{queryObj.uname}
			</if>
			<if test="queryObj.sex != null ">
	           AND sex = #{queryObj.sex}
	        </if>
		</where>
	</select>
</mapper>  

11.  UserServiceImpl类，接口代码省略

package com.asia.demo.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.asia.demo.bean.UserInfo;
import com.asia.demo.mapper.UserInfoMapper;
import com.asia.demo.service.IUserService;
import com.asia.util.mybatispage.PageUtil;

@Service("userServiceImpl")
public class UserServiceImpl implements IUserService {

	@Resource
	private UserInfoMapper userInfoMapper;

	@Override
	public List<UserInfo> queryUser() {
		return userInfoMapper.queryUser();
	}

	@Override
	public List<UserInfo> searchUser(PageUtil spu) {
		return userInfoMapper.searchUser(spu);
	}

	public UserInfoMapper getUserInfoMapper() {
		return userInfoMapper;
	}

	public void setUserInfoMapper(UserInfoMapper userInfoMapper) {
		this.userInfoMapper = userInfoMapper;
	}

}

12.  UserList.jsp

<%@ page contentType="text/html; charset=UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<title>查询</title>
	<meta http-equiv="pragma" content="no-cache" />
	<meta http-equiv="cache-control" content="no-cache" />
	<meta http-equiv="expires" content="0" />
	<link type="text/css" href="<%=path %>/common/jquery/easyui/css/default/easyui.css"  rel="stylesheet" charset='UTF-8'>
	<link type="text/css" href="<%=path %>/common/jquery/easyui/css/icon.css" rel="stylesheet" charset='UTF-8'>
	<script type="text/javascript">
	var basePath="<%=path %>";
	</script>
	<script language="javascript" src="<%=path %>/common/jquery/core/jquery-1.11.1.js"></script>
	<script language="javascript" src="<%=path %>/common/jquery/easyui/js/jquery.easyui.min.js"></script>
	<script language="javascript" src="<%=path %>/demo/js/UserList.js"></script>
</head>
<body class="body">
<table width="98%">
    <tr>
        <td>
            <table id="userInfo" title="">
		    </table>
        </td>
    </tr>
</table>

</body>
</html>

13.  UserList.js

/**
 * 设置列
 *
 * @return
 */
function getColumns() {
	return [[
             {field:'id', title:"编号", checkbox:true},
		   	 {field:'user', title:"用户名", halign:'center', align:'center',sortable:true, width:278},
		   	 {field:'birthday', title:"出生日期", halign:'center', align:'center', sortable:true, width:150},
		   	 {field:'sex', title:"性别", halign:'center', align:'center',sortable:true, width:80},
		   	/* {field:'address', title:"状态", halign:'center', align:'center',sortable:true, width:80,
		   		formatter: function(value,row,index){
					return taskState.get(value);
				}
		   	 },*/
		   	 {field:'address', title:"地址", halign:'center', align:'center',sortable:true, width:180}
		   	 ]];
}

/**
 * 初始化页面
 */
jQuery(function() {
	var gridParam = {
			rownumbers:true,
			loadMsg : "数据加载中",
			pagination : true,
			multiSort : true,
		    pageSize :  10,
			pageList : [  10, 20, 30, 50, 100 ],
			striped : true,
			columns : getColumns(),
			//queryParams : queryParams,
			url:basePath+"/user/searchUser.do",
			collapsible : true,
			singleSelect : true,
			idField : "id" // 支持跨页选择
		};

		$('#userInfo').datagrid(gridParam);
		$('#userInfo').datagrid("getPager").pagination( {
			pageSize : 10,
			displayMsg : '当前数据范围 {from} 到 {to} ，共 {total} 条记录',
			beforePageText : '当前',
			afterPageText : '  ,共 {pages}页'
		});
});

欢迎大家拍砖