目录
MyBatis与Spring集成
导入pom依赖
导入generatorConfig.xml
导入spring-mybatis.xml
自动生成mapper文件
编写接口类：BookBiz
aop整合PageHelper分页插件
编写分页查询
编写pagebean
编写PagerAspect类
测试结果
MyBatis与Spring集成
导入pom依赖
<?xml version="1.0" encoding="UTF-8"?>
<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>org.example</groupId>
<artifactId>Spring</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.plugin.version>3.7.0</maven.compiler.plugin.version>
<!--添加jar包依赖-->
<!--1.spring 5.0.2.RELEASE相关-->
<spring.version>5.0.2.RELEASE</spring.version>
<!--2.mybatis相关-->
<mybatis.version>3.4.5</mybatis.version>
<!--mysql-->
<mysql.version>5.1.44</mysql.version>
<!--pagehelper分页jar依赖-->
<pagehelper.version>5.1.2</pagehelper.version>
<!--mybatis与spring集成jar依赖-->
<mybatis.spring.version>1.3.1</mybatis.spring.version>
<!--3.dbcp2连接池相关 druid-->
<commons.dbcp2.version>2.1.1</commons.dbcp2.version>
<commons.pool2.version>2.4.3</commons.pool2.version>
<!--4.log日志相关-->
<log4j2.version>2.9.1</log4j2.version>
<!--5.其他-->
<junit.version>4.12</junit.version>
<servlet.version>4.0.0</servlet.version>
<lombok.version>1.18.2</lombok.version>
</properties>
<dependencies>
<!--1.spring相关-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!--2.mybatis相关-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!--pagehelper分页插件jar包依赖-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<!--mybatis与spring集成jar包依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!--3.dbcp2连接池相关-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>${commons.dbcp2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>${commons.pool2.version}</version>
</dependency>
<!--4.log日志相关依赖-->
<!--核心log4j2jar包-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j2.version}</version>
</dependency>
<!--web工程需要包含log4j-web，非web工程不需要-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-web</artifactId>
<version>${log4j2.version}</version>
</dependency>
<!--5.其他-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<!-- <scope>test</scope>-->
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<finalName>Spring</finalName>
<resources>
<!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题-->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题-->
<resource>
<directory>src/main/resources</directory>
<includes>
<include>jdbc.properties</include>
<include>*.xml</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven.compiler.plugin.version}</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<dependencies>
<!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
</dependencies>
<configuration>
<overwrite>true</overwrite>
</configuration>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</build>
</project>
导入generatorConfig.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" >
<generatorConfiguration>
<!-- 引入配置文件 -->
<properties resource="jdbc.properties"/>
<!--指定数据库jdbc驱动jar包的位置-->
<classPathEntry location="D:\\temp2\\mvn_repository\\mysql\\mysql-connector-java\\5.1.44"/>
<!-- 一个数据库一个context -->
<context id="infoGuardian">
<!-- 注释 -->
<commentGenerator>
<property name="suppressAllComments" value="true"/><!-- 是否取消注释 -->
<property name="suppressDate" value="true"/> <!-- 是否生成注释代时间戳 -->
</commentGenerator>
<!-- jdbc连接 -->
<jdbcConnection driverClass="${jdbc.driver}"
connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/>
<!-- 类型转换 -->
<javaTypeResolver>
<!-- 是否使用bigDecimal， false可自动转化以下类型（Long, Integer, Short, etc.） -->
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!-- 01 指定javaBean生成的位置 -->
<!-- targetPackage：指定生成的model生成所在的包名 -->
<!-- targetProject：指定在该项目下所在的路径 -->
<javaModelGenerator targetPackage="com.xiaoxu.model"
targetProject="src/main/java">
<!-- 是否允许子包，即targetPackage.schemaName.tableName -->
<property name="enableSubPackages" value="false"/>
<!-- 是否对model添加构造函数 -->
<property name="constructorBased" value="true"/>
<!-- 是否针对string类型的字段在set的时候进行trim调用 -->
<property name="trimStrings" value="false"/>
<!-- 建立的Model对象是否 不可改变 即生成的Model对象不会有 setter方法，只有构造方法 -->
<property name="immutable" value="false"/>
</javaModelGenerator>
<!-- 02 指定sql映射文件生成的位置 -->
<sqlMapGenerator targetPackage="com.xiaoxu.mapper"
targetProject="src/main/java">
<!-- 是否允许子包，即targetPackage.schemaName.tableName -->
<property name="enableSubPackages" value="false"/>
</sqlMapGenerator>
<!-- 03 生成XxxMapper接口 -->
<!-- type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 -->
<!-- type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 -->
<!-- type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 -->
<javaClientGenerator targetPackage="com.xiaoxu.mapper"
targetProject="src/main/java" type="XMLMAPPER">
<!-- 是否在当前路径下新加一层schema,false路径com.oop.eksp.user.model， true:com.oop.eksp.user.model.[schemaName] -->
<property name="enableSubPackages" value="false"/>
</javaClientGenerator>
<!-- 配置表信息 -->
<!-- schema即为数据库名 -->
<!-- tableName为对应的数据库表 -->
<!-- domainObjectName是要生成的实体类 -->
<!-- enable*ByExample是否生成 example类 -->
<!--<table schema="" tableName="t_book" domainObjectName="Book"-->
<!--enableCountByExample="false" enableDeleteByExample="false"-->
<!--enableSelectByExample="false" enableUpdateByExample="false">-->
<!--<!– 忽略列，不生成bean 字段 –>-->
<!--<!– <ignoreColumn column="FRED" /> –>-->
<!--<!– 指定列的java数据类型 –>-->
<!--<!– <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> –>-->
<!--</table>-->
<table schema="" tableName="t_mvc_Book" domainObjectName="Book"
enableCountByExample="false" enableDeleteByExample="false"
enableSelectByExample="false" enableUpdateByExample="false">
<!-- 忽略列，不生成bean 字段 -->
<!-- <ignoreColumn column="FRED" /> -->
<!-- 指定列的java数据类型 -->
<!-- <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> -->
</table>
</context>
</generatorConfiguration>导入spring-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
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.xsd">
<!-- spring框架与mybatis整合的配置文件加载到spring的上下文中-->
<import resource="classpath:spring-mybatis.xml"></import>
</beans>导入spring-mybatis.xml
<?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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.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.xsd">
<!--1. 注解式开发 -->
<!-- 注解驱动 -->
<context:annotation-config/>
<!-- 用注解方式注入bean，并指定查找范围：com.xiaoxu及子子孙孙包-->
<context:component-scan base-package="com.xiaoxu"/>
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!--初始连接数-->
<property name="initialSize" value="10"/>
<!--最大活动连接数-->
<property name="maxTotal" value="100"/>
<!--最大空闲连接数-->
<property name="maxIdle" value="50"/>
<!--最小空闲连接数-->
<property name="minIdle" value="10"/>
<!--设置为-1时，如果没有可用连接，连接池会一直无限期等待，直到获取到连接为止。-->
<!--如果设置为N（毫秒），则连接池会等待N毫秒，等待不到，则抛出异常-->
<property name="maxWaitMillis" value="-1"/>
</bean>
<!--4. spring和MyBatis整合 -->
<!--1) 创建sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 指定数据源 -->
<property name="dataSource" ref="dataSource"/>
<!-- 自动扫描XxxMapping.xml文件，**任意路径 -->
<property name="mapperLocations" value="classpath*:com/xiaoxu/**/mapper/*.xml"/>
<!-- 指定别名 -->
<property name="typeAliasesPackage" value="com/xiaoxu/**/model"/>
<!--配置pagehelper插件-->
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<value>
helperDialect=mysql
</value>
</property>
</bean>
</array>
</property>
</bean>
<!--2) 自动扫描com/xiaoxu/**/mapper下的所有XxxMapper接口(其实就是DAO接口)，并实现这些接口，-->
<!-- 即可直接在程序中使用dao接口，不用再获取sqlsession对象-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--basePackage 属性是映射器接口文件的包路径。-->
<!--你可以使用分号或逗号 作为分隔符设置多于一个的包路径-->
<property name="basePackage" value="com/xiaoxu/**/mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<aop:aspectj-autoproxy/>
</beans>自动生成mapper文件
编写接口类：BookBiz
package com.xiaoxu.biz;
import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;
import java.util.List;
/**
* @author小徐
* @site www.veryedu.cn
* @company xu集团
* @create 2023-08-25 15:17
*/
public interface BookBiz {
int deleteByPrimaryKey(Integer bid);
int insert(Book record);
int insertSelective(Book record);
Book selectByPrimaryKey(Integer bid);
int updateByPrimaryKeySelective(Book record);
int updateByPrimaryKey(Book record);
List<Book> listPage(Book book, PageBean pageBean);
}
编写接口实现类：
package com.xiaoxu.impl;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.biz.BookBiz;
import com.xiaoxu.mapper.BookMapper;
import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* @author小徐
* @site www.veryedu.cn
* @company xu集团
* @create 2023-08-25 15:19
*/
@Service
public class BookBizimpl implements BookBiz {
//相当于set,get方法
@Autowired
private BookMapper bookMapper;
@Override
public int deleteByPrimaryKey(Integer bid) {
return bookMapper.deleteByPrimaryKey(bid);
}
@Override
public int insert(Book record) {
return bookMapper.insert(record);
}
@Override
public int insertSelective(Book record) {
return bookMapper.insertSelective(record);
}
@Override
public Book selectByPrimaryKey(Integer bid) {
return bookMapper.selectByPrimaryKey(bid);
}
@Override
public int updateByPrimaryKeySelective(Book record) {
return bookMapper.updateByPrimaryKeySelective(record);
}
@Override
public int updateByPrimaryKey(Book record) {
return bookMapper.updateByPrimaryKey(record);
}
@Override
public List<Book> listPage(Book book, PageBean pageBean) {
// if (pageBean !=null && pageBean.isPagination())
// PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
// List<Book> list = bookMapper.listPage(book);
// if (pageBean !=null && pageBean.isPagination()){
// PageInfo<Book> info = new PageInfo<>(list);
// pageBean.setTotal((int)info.getTotal());
// }
return bookMapper.listPage(book);
}
}
编写实体类：
package com.xiaoxu.model;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
//@Data
@AllArgsConstructor
@NoArgsConstructor
public class Book {
private Integer bid;
private String bname;
private Float price;
public Book(Integer bid, String bname, Float price) {
this.bid = bid;
this.bname = bname;
this.price = price;
}
public Book() {
super();
}
public Integer getBid() {
return bid;
}
public void setBid(Integer bid) {
this.bid = bid;
}
public String getBname() {
return bname;
}
public void setBname(String bname) {
this.bname = bname;
}
public Float getPrice() {
return price;
}
public void setPrice(Float price) {
this.price = price;
}
@Override
public String toString() {
return "Book{" +
"bid=" + bid +
", bname='" + bname + '\'' +
", price=" + price +
'}';
}
}编写接口测试类：
package com.xiaoxu.impl;
import com.xiaoxu.biz.BookBiz;
import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import static org.junit.Assert.*;
/**
* @author小徐
* @site www.veryedu.cn
* @company xu集团
* @create 2023-08-25 16:04
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:spring-context.xml"})
public class BookBizimplTest {
@Autowired
private BookBiz bookBiz;
@Before
public void setUp() throws Exception {
}
@After
public void tearDown() throws Exception {
}
@Test
public void deleteByPrimaryKey() {
System.out.println(this.bookBiz.deleteByPrimaryKey(1));
}
@Test
public void insert() {
}
@Test
public void insertSelective() {
}
@Test
public void selectByPrimaryKey() {
System.out.println(bookBiz.selectByPrimaryKey(37));
}
@Test
public void updateByPrimaryKeySelective() {
}
@Test
public void updateByPrimaryKey() {
}
@Test
public void listPage() {
Book book = new Book();
PageBean pageBean = new PageBean();
pageBean.setPage(2);
pageBean.setRows(20);
book.setBname("圣墟");
this.bookBiz.listPage(book,pageBean).forEach(System.out::println);
}
}测试结果：
aop整合PageHelper分页插件
编写分页查询
<select id="listPage" resultType="com.xiaoxu.model.Book" parameterType="com.xiaoxu.model.Book" >
select
<include refid="Base_Column_List" />
from t_mvc_book
<where>
<if test="bname != null">
and bname like concat('%',#{bname},'%')
</if>
</where>
</select>编写pagebean
package com.xiaoxu.utlis;
import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import java.util.Map;
public class PageBean implements Serializable {
private static final long serialVersionUID = 2422581023658455731L;
//页码
private int page=1;
//每页显示记录数
private int rows=10;
//总记录数
private int total=0;
//是否分页
private boolean isPagination=true;
//上一次的请求路径
private String url;
//获取所有的请求参数
private Map<String,String[]> map;
public PageBean() {
super();
}
//设置请求参数
public void setRequest(HttpServletRequest req) {
String page=req.getParameter("page");
String rows=req.getParameter("rows");
String pagination=req.getParameter("pagination");
this.setPage(page);
this.setRows(rows);
this.setPagination(pagination);
this.url=req.getContextPath()+req.getServletPath();
this.map=req.getParameterMap();
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public Map<String, String[]> getMap() {
return map;
}
public void setMap(Map<String, String[]> map) {
this.map = map;
}
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public void setPage(String page) {
if(null!=page&&!"".equals(page.trim()))
this.page = Integer.parseInt(page);
}
public int getRows() {
return rows;
}
public void setRows(int rows) {
this.rows = rows;
}
public void setRows(String rows) {
if(null!=rows&&!"".equals(rows.trim()))
this.rows = Integer.parseInt(rows);
}
public int getTotal() {
return total;
}
public void setTotal(int total) {
this.total = total;
}
public void setTotal(String total) {
this.total = Integer.parseInt(total);
}
public boolean isPagination() {
return isPagination;
}
public void setPagination(boolean isPagination) {
this.isPagination = isPagination;
}
public void setPagination(String isPagination) {
if(null!=isPagination&&!"".equals(isPagination.trim()))
this.isPagination = Boolean.parseBoolean(isPagination);
}
/**
* 获取分页起始标记位置
* @return
*/
public int getStartIndex() {
//(当前页码-1)*显示记录数
return (this.getPage()-1)*this.rows;
}
/**
* 末页
* @return
*/
public int getMaxPage() {
int totalpage=this.total/this.rows;
if(this.total%this.rows!=0)
totalpage++;
return totalpage;
}
/**
* 下一页
* @return
*/
public int getNextPage() {
int nextPage=this.page+1;
if(this.page>=this.getMaxPage())
nextPage=this.getMaxPage();
return nextPage;
}
/**
* 上一页
* @return
*/
public int getPreivousPage() {
int previousPage=this.page-1;
if(previousPage<1)
previousPage=1;
return previousPage;
}
@Override
public String toString() {
return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", isPagination=" + isPagination
+ "]";
}
}
编写PagerAspect类
package com.xiaoxu.aspect;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.utlis.PageBean;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
import java.util.List;
/**
* @author小徐
* @site www.veryedu.cn
* @company xu集团
* @create 2023-08-25 17:24
*
* * *..*Service.*Pager(..)
* *:任意返回值类型
* *..:任意包，不限层级
* *service：以serveice结尾的类/接口
* *page：以page结尾的方法
* ..：任意参数
* 符合上述条件，即为目标类或者目标方法
*/
@Aspect//代表当前类为切面类
@Component//代表当前类交给spring进行管理
public class PagerAspect {
@Around("execution(* *..*Service.*Pager(..))")
public Object invoke(ProceedingJoinPoint args) throws Throwable {
PageBean pageBean = null;
Object[] params = args.getArgs();
for (Object param : params) {
if(param instanceof PageBean){
pageBean = (PageBean)param;
break;
}
}
if(pageBean != null && pageBean.isPagination())
PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
Object list = args.proceed(params);
if(null != pageBean && pageBean.isPagination()){
PageInfo pageInfo = new PageInfo((List) list);
pageBean.setTotal(pageInfo.getTotal()+"");
}
return list;
}
}
测试结果
