通过搭建ssm框架，然后通过mybatis的分页插件pagehelp进行分页查询。
源码：https://gitee.com/smfx1314/pagehelper
看一下项目结构：
首先创建一个maven工程，pom中引入相关jar包
1<dependencies> 2 <dependency> 3 <groupId>org.springframework</groupId> 4 <artifactId>spring-core</artifactId> 5 <version>4.3.2.RELEASE</version> 6 </dependency> 7 <dependency> 8 <groupId>org.springframework</groupId> 9 <artifactId>spring-aop</artifactId> 10 <version>4.3.2.RELEASE</version> 11 </dependency> 12 <dependency> 13 <groupId>org.springframework</groupId> 14 <artifactId>spring-aspects</artifactId> 15 <version>4.3.2.RELEASE</version> 16 </dependency> 17 <dependency> 18 <groupId>org.springframework</groupId> 19 <artifactId>spring-beans</artifactId> 20 <version>4.3.2.RELEASE</version> 21 </dependency> 22 <dependency> 23 <groupId>org.springframework</groupId> 24 <artifactId>spring-context</artifactId> 25 <version>4.3.2.RELEASE</version> 26 </dependency> 27 <dependency> 28 <groupId>org.springframework</groupId> 29 <artifactId>spring-expression</artifactId> 30 <version>4.3.2.RELEASE</version> 31 </dependency> 32 <dependency> 33 <groupId>org.springframework</groupId> 34 <artifactId>spring-jdbc</artifactId> 35 <version>4.3.2.RELEASE</version> 36 </dependency> 37 <dependency> 38 <groupId>org.springframework</groupId> 39 <artifactId>spring-test</artifactId> 40 <version>4.3.2.RELEASE</version> 41 </dependency> 42 <dependency> 43 <groupId>org.springframework</groupId> 44 <artifactId>spring-tx</artifactId> 45 <version>4.3.2.RELEASE</version> 46 </dependency> 47 <dependency> 48 <groupId>org.springframework</groupId> 49 <artifactId>spring-web</artifactId> 50 <version>4.3.2.RELEASE</version> 51 </dependency> 52 <dependency> 53 <groupId>org.springframework</groupId> 54 <artifactId>spring-webmvc</artifactId> 55 <version>4.3.2.RELEASE</version> 56 </dependency> 57 <dependency> 58 <groupId>org.mybatis</groupId> 59 <artifactId>mybatis-spring</artifactId> 60 <version>1.3.0</version> 61 </dependency> 62 <dependency> 63 <groupId>org.mybatis</groupId> 64 <artifactId>mybatis</artifactId> 65 <version>3.4.4</version> 66 </dependency> 67 <dependency> 68 <groupId>commons-io</groupId> 69 <artifactId>commons-io</artifactId> 70 <version>2.4</version> 71 </dependency> 72 <dependency> 73 <groupId>org.apache.commons</groupId> 74 <artifactId>commons-lang3</artifactId> 75 <version>3.4</version> 76 </dependency> 77 <dependency> 78 <groupId>commons-logging</groupId> 79 <artifactId>commons-logging</artifactId> 80 <version>1.1.1</version> 81 </dependency> 82 <dependency> 83 <groupId>org.apache.logging.log4j</groupId> 84 <artifactId>log4j-core</artifactId> 85 <version>2.9.1</version> 86 </dependency> 87 <dependency> 88 <groupId>org.slf4j</groupId> 89 <artifactId>slf4j-log4j12</artifactId> 90 <version>1.7.21</version> 91 <scope>test</scope> 92 </dependency> 93 <dependency> 94 <groupId>aopalliance</groupId> 95 <artifactId>aopalliance</artifactId> 96 <version>1.0</version> 97 </dependency> 98 <dependency> 99 <groupId>mysql</groupId> 100 <artifactId>mysql-connector-java</artifactId> 101 <version>5.1.38</version> 102 </dependency> 103 <dependency> 104 <groupId>com.mchange</groupId> 105 <artifactId>c3p0</artifactId> 106 <version>0.9.5.2</version> 107 </dependency> 108 <dependency> 109 <groupId>javax.servlet</groupId> 110 <artifactId>jstl</artifactId> 111 <version>1.2</version> 112 </dependency> 113 <dependency> 114 <groupId>javax.servlet</groupId> 115 <artifactId>javax.servlet-api</artifactId> 116 <version>3.1.0</version> 117 <scope>provided</scope> 118 </dependency> 119 120 <dependency> 121 <groupId>javax.servlet.jsp</groupId> 122 <artifactId>javax.servlet.jsp-api</artifactId> 123 <version>2.2.1</version> 124 <scope>provided</scope> 125 </dependency> 126 127 <dependency> 128 <groupId>taglibs</groupId> 129 <artifactId>standard</artifactId> 130 <version>1.1.2</version> 131 </dependency> 132 <dependency> 133 <groupId>com.github.pagehelper</groupId> 134 <artifactId>pagehelper</artifactId> 135 <version>5.1.2</version> 136 </dependency> 137 138 </dependencies> 139 <build> 140 <plugins> 141 <plugin> 142 <groupId>org.apache.maven.plugins</groupId> 143 <artifactId>maven-compiler-plugin</artifactId> 144 <version>3.6.1</version> 145 <configuration> 146 <encoding>utf-8</encoding> 147 </configuration> 148 </plugin> 149 150 <plugin> 151 <groupId>org.apache.tomcat.maven</groupId> 152 <artifactId>tomcat7-maven-plugin</artifactId> 153 <version>2.2</version> 154 <configuration> 155 <uriEncoding>UTF-8</uriEncoding> 156 </configuration> 157 </plugin> 158 </plugins> 159 </build> 160</project>
pom.xml中引入page分页的jar包
1<dependency> 2 <groupId>com.github.pagehelper</groupId> 3 <artifactId>pagehelper</artifactId> 4 <version>5.1.2</version> 5 </dependency>
jar包这里就引入完了。下面引入配置文件
applicationContext.xml
1<?xml version="1.0" encoding="UTF-8"?> 2<beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:context="http://www.springframework.org/schema/context" 7 xsi:schemaLocation="http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans.xsd 9 http://www.springframework.org/schema/tx 10 http://www.springframework.org/schema/tx/spring-tx.xsd 11 http://www.springframework.org/schema/aop 12 http://www.springframework.org/schema/aop/spring-aop.xsd 13 http://www.springframework.org/schema/context 14 http://www.springframework.org/schema/context/spring-context.xsd"> 15 <!-- 扫描注解的包 --> 16 <context:component-scan base-package="com.jiangfx.service"/> 17 <!-- 配置数据库 --> 18 <!-- 加载配置文件 --> 19 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> 20 <property name="driverClass" value="com.mysql.jdbc.Driver"></property> 21 <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/pagehelper"></property> 22 <property name="user" value="root"></property> 23 <property name="password" value="1234"></property> 24 </bean> 25 <!-- 配置sqlSessionFactory, 并将数据源注入 --> 26 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 27 <!-- 引入数据源 --> 28 <property name="dataSource" ref="dataSource"></property> 29 <!--载入mybatis配置文件--> 30 <property name="configLocation" value="classpath:mybatis-config.xml"/> 31 <!--载入配置mapper映射的xml--> 32 <property name="mapperLocations" value="classpath:com/jiangfx/mapper/*.xml"/> 33 </bean> 34 <!-- 配置映射接口 --> 35 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 36 <property name="basePackage" value="com.jiangfx.mapper"/> 37 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> 38 </bean> 39 <!-- 配置声明式事务 --> 40 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 41 <property name="dataSource" ref="dataSource"></property> 42 </bean> 43 <tx:annotation-driven transaction-manager="transactionManager"/> 44 45 <!-- 配置aop --> 46 47 48</beans>
springmvc.xml
1<?xml version="1.0" encoding="UTF-8"?> 2<beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:mvc="http://www.springframework.org/schema/mvc" 4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 5 xmlns:context="http://www.springframework.org/schema/context" 6 xsi:schemaLocation=" 7 http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans.xsd 9 http://www.springframework.org/schema/context 10 http://www.springframework.org/schema/context/spring-context.xsd 11 http://www.springframework.org/schema/mvc 12 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 13 <!-- 扫描注解的包 --> 14 <context:component-scan base-package="com.jiangfx.controller"/> 15 <!-- 开启注解 --> 16 <mvc:annotation-driven/> 17 <!--静态资源访问--> 18 <mvc:default-servlet-handler/> 19 20 <!-- 配置视图解析器 --> 21 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 22 <property name="prefix" value="/WEB-INF/jsp/"></property> 23 <property name="suffix" value=".jsp"></property> 24 </bean> 25</beans>
mybatis-config.xml
1<?xml version="1.0" encoding="UTF-8" ?> 2<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" 3 "http://mybatis.org/dtd/mybatis-3-config.dtd"> 4 5<configuration> 6 <!-- 引入 pageHelper插件 --><!--注意这里要写成PageInterceptor, 5.0之前的版本都是写PageHelper, 5.0之后要换成PageInterceptor--> 7 <plugins> 8 <plugin interceptor="com.github.pagehelper.PageInterceptor"> 9 <!--reasonable：分页合理化参数，默认值为false。 10 当该参数设置为 true 时，pageNum<=0 时会查询第一页， 11 pageNum>pages（超过总数时），会查询最后一页。 12 默认false 时，直接根据参数进行查询。--> 13 <property name="reasonable" value="true"/> 14 </plugin> 15 </plugins> 16</configuration>
以上你也可以直接配置的applicationContext中。
web.xml
1<?xml version="1.0" encoding="UTF-8"?> 2<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> 3 <display-name>pagehelper</display-name> 4 <welcome-file-list> 5 <welcome-file>index.jsp</welcome-file> 6 </welcome-file-list> 7 <listener> 8 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 9 </listener> 10 <context-param> 11 <param-name>contextConfigLocation</param-name> 12 <param-value>classpath:applicationContext.xml</param-value> 13 </context-param> 14 <servlet> 15 <servlet-name>springmvc</servlet-name> 16 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 17 <init-param> 18 <param-name>contextConfigLocation</param-name> 19 <param-value>classpath:springmvc.xml</param-value> 20 </init-param> 21 <load-on-startup>1</load-on-startup> 22 </servlet> 23 <servlet-mapping> 24 <servlet-name>springmvc</servlet-name> 25 <url-pattern>/</url-pattern> 26 </servlet-mapping> 27 <filter> 28 <filter-name>encodingFilter</filter-name> 29 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 30 <init-param> 31 <param-name>encoding</param-name> 32 <param-value>UTF-8</param-value> 33 </init-param> 34 </filter> 35 <filter-mapping> 36 <filter-name>encodingFilter</filter-name> 37 <url-pattern>/*</url-pattern> 38 </filter-mapping> 39</web-app>
controller:
1package com.jiangfx.controller; 2 3import java.util.List; 4import org.springframework.beans.factory.annotation.Autowired; 5import org.springframework.stereotype.Controller; 6import org.springframework.ui.ModelMap; 7import org.springframework.web.bind.annotation.RequestMapping; 8import org.springframework.web.bind.annotation.RequestMethod; 9import org.springframework.web.bind.annotation.RequestParam; 10 11import com.github.pagehelper.PageHelper; 12import com.github.pagehelper.PageInfo; 13import com.jiangfx.entity.User; 14import com.jiangfx.service.UserService; 15 16@Controller 17public class UserController { 18 19 @Autowired 20 private UserService pageService; 21 22 /** 23 * 分页查询 24 */ 25 @RequestMapping(value="/list",method=RequestMethod.GET) 26 public String pageList(ModelMap map,@RequestParam(defaultValue="1",required=true,value="pageNo") Integer pageNo){ 27 Integer pageSize=4;//每页显示记录数 28 //分页查询 29 PageHelper.startPage(pageNo, pageSize); 30 List<User> userList = pageService.list();//获取所有用户信息 31 PageInfo<User> pageInfo=new PageInfo<User>(userList); 32 map.addAttribute("pageInfo", pageInfo); return "list"; 33 } 34 35}
serviceImpl:接口自己定义，这里就不贴了
1package com.jiangfx.service.impl; 2 3import java.util.List; 4 5import org.springframework.beans.factory.annotation.Autowired; 6import org.springframework.stereotype.Service; 7 8import com.jiangfx.entity.User; 9import com.jiangfx.mapper.UserMapper; 10import com.jiangfx.service.UserService; 11 12@Service 13public class UserServiceImpl implements UserService { 14 15 @Autowired 16 private UserMapper userMapper; 17 18 /** 19 * 查询所有用户 20 * @return 21 */ 22 @Override 23 public List<User> list() { 24 25 return userMapper.getAllUser(); 26 } 27 28}
entity:
1package com.jiangfx.entity; 2 3public class User { 4 5 private Integer id; 6 private String username; 7 private String sex; 8 private String city; 9 public Integer getId() { 10 return id; 11 } 12 public void setId(Integer id) { 13 this.id = id; 14 } 15 public String getUsername() { 16 return username; 17 } 18 public void setUsername(String username) { 19 this.username = username; 20 } 21 public String getSex() { 22 return sex; 23 } 24 public void setSex(String sex) { 25 this.sex = sex; 26 } 27 public String getCity() { 28 return city; 29 } 30 public void setCity(String city) { 31 this.city = city; 32 } 33 @Override 34 public String toString() { 35 return "User [id=" + id + ", username=" + username + ", sex=" + sex + ", city=" + city + "]"; 36 } 37 38}
mapper
1package com.jiangfx.mapper; 2 3import java.util.List; 4 5import com.jiangfx.entity.User; 6 7public interface UserMapper { 8 9 //查询所有用户 10 List<User> getAllUser(); 11}
mapper.xml
1<?xml version="1.0" encoding="UTF-8" ?> 2<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" 3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 4 5<mapper namespace="com.jiangfx.mapper.UserMapper"> 6 <!-- 查询博客 --> 7 <select id="getAllUser" resultType="com.jiangfx.entity.User"> 8 select * from user 9 </select> 10</mapper>
下面是jsp
index.jsp
1<%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4<html> 5<head> 6<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7<title>Insert title here</title> 8</head> 9<body> 10<a href="list">分页查询</a> 11</body> 12</html>
返回list
list.jsp
1<%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 4<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5<html> 6<head> 7<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8<title>Insert title here</title> 9</head> 10<body> 11 <center> 12 <table width="200" border="1"> 13 <tr> 14 <th scope="col">ID</th> 15 <th scope="col">姓名</th> 16 <th scope="col">性别</th> 17 <th scope="col">城市</th> 18 </tr> 19 <c:forEach items="${pageInfo.list}" var="user"> 20 <tr> 21 <td>${user.id}</td> 22 <td>${user.username}</td> 23 <td>${user.sex}</td> 24 <td>${user.city}</td> 25 </tr> 26 </c:forEach> 27 </table> 28 <p>当前 ${pageInfo.pageNum }页,总${pageInfo.pages } 29 页,总 ${pageInfo.total } 条记录</div></p> 30 <a href="list?pageNo=${pageInfo.firstPage}">第一页</a> 31 <c:if test="${pageInfo.hasPreviousPage }"> 32 <a href="list?pageNo=${pageInfo.pageNum-1}">上一页</a> 33 </c:if> 34 35 <c:if test="${pageInfo.hasNextPage }"> 36 <a href="list?pageNo=${pageInfo.pageNum+1}">下一页</a> 37 </c:if> 38 39 <a href="list?pageNo=${pageInfo.lastPage}">最后页</a> 40 </center> 41 </body> 42</html>
访问localhost:8080/pagehelper
点击分页查询结果：
有什么问题可以联系我