springmvc+mybatis+easyui分页
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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
版本
Spring
4.0.2.RELEASE
Mybatis
3.2.6
jquery
jquery -1.11.1.js
EasyUI
1.4
Maven
2.5
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;@JsonIgnorepublic 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;}@JsonIgnorepublic 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;}@JsonIgnorepublic int getPage() {return page;}public void setPage(int page) {this.page = page;}@JsonIgnorepublic String getSort() {return sort;}public void setSort(String sort) {this.sort = sort;}@JsonIgnorepublic String getOrder() {return order;}public void setOrder(String order) {this.order = order;}@JsonIgnorepublic 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;}@Overridepublic 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;@Overridepublic 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; } @Overridepublic Object plugin(Object target) {return Plugin.wrap(target, this);} @Overridepublic 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;}@Overridepublic 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 {@Resourceprivate 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 {@Resourceprivate UserInfoMapper userInfoMapper;@Overridepublic List<UserInfo> queryUser() {return userInfoMapper.queryUser();}@Overridepublic 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'});});
补充ReflectUtil
package com.asia.util;import java.lang.reflect.Field;/** * 反射工具类 * @author SCY * * @createDate 2013-12-19上午09:29:45 * * @version 1.0 */public class ReflectUtil {private ReflectUtil(){}/** * 反射获取对象String类型属性值 * @param obj * @param paramName * @return String 对象属性值 * @throws Exception */public static String getObjValue(Object obj, String paramName)throws Exception{String getMethodName = "get"+ Character.toUpperCase(paramName.charAt(0))+ paramName.substring(1);return (String) obj.getClass().getMethod(getMethodName).invoke(obj);}/** * 为对象某String类型属性设置指定值 * @param obj 待赋值对象 * @param paramName 属性名称 * @param paramValue 属性值 * @throws Exception */public static void setObjValue(Object obj, String paramName,String paramValue) throws Exception {String getMethodName = "set"+ Character.toUpperCase(paramName.charAt(0))+ paramName.substring(1);obj.getClass().getMethod(getMethodName, String.class).invoke(obj,paramValue);} /** * 利用反射获取指定对象的指定属性 * @throws IllegalAccessException * @throws IllegalArgumentException */ public static Object getFieldValue(Object obj, String fieldName) throws IllegalArgumentException, IllegalAccessException { Object result = null; final Field field = ReflectUtil.getField(obj, fieldName); if (field != null) {field.setAccessible(true);result = field.get(obj); } return result; } /** * 利用反射获取指定对象里面的指定属性 */ private static Field getField(Object obj, String fieldName) { Field field = null; for (Class<?> clazz = obj.getClass(); clazz != Object.class; clazz = clazz.getSuperclass()) { try { field = clazz.getDeclaredField(fieldName); break; } catch (NoSuchFieldException e) { // 这里不用做处理，子类没有该字段可能对应的父类有，都没有就返回null。 } } return field; } /** * 利用反射设置指定对象的指定属性为指定的值 * @throws IllegalAccessException * @throws IllegalArgumentException */ public static void setFieldValue(Object obj, String fieldName, String fieldValue) throws IllegalArgumentException, IllegalAccessException { final Field field = ReflectUtil.getField(obj, fieldName); if (field != null) { field.setAccessible(true); field.set(obj, fieldValue); } }}demo下载地址
http://download.csdn.net/download/suijiarui/9515485
转载地址 http://m.blog.csdn.net/suijiarui/article/details/51360980 感谢博主
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