首先配置mybatis,可以参考这篇博客的前期基础配置使用。
https://blog.csdn.net/qq_41520636/article/details/84146699
下面配置结构:
需要的jar,在pom.xml中引入
<!--统一jar包-->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.vision>5.1.1.RELEASE</spring.vision>
<shiro.version>1.2.3</shiro.version>
</properties>
<dependencies>
<!--mybatis框架-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- JUnit单元测试工具 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</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>
<!--mysql连接池jar包-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<!--缓存-->
<dependency>
<groupId>org.mybatis.caches</groupId>
<artifactId>mybatis-ehcache</artifactId>
<version>1.1.0</version>
</dependency>
<!--打印日志-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.5</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.12</version>
</dependency>
<!--自动生成bean-->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.2</version>
</dependency>
<!--toString与重载方法过滤-->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<!--分页-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.8</version>
</dependency>
<!--spring框架核心库-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.vision}</version>
</dependency>
<!-- spring-aop -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.vision}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.vision}</version>
</dependency>
<!--Spring java数据库访问包,在本例中主要用于提供数据源 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.vision}</version>
</dependency>
<!--Spring Web-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.vision}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.vision}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.vision}</version>
</dependency>
<!--spring和mybatis整合-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- aspectjweaver 切面-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.2</version>
</dependency>
<!--最新版c3p0连接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
下面是applicationContext.xml配置,连接数据库事务的配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<!--引入属性文件,在配置中占位使用 -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--配置C3P0数据源-->
<bean id="ds" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<!--连接数据库的基本信息-->
<property name="user" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="driverClass" value="${jdbc.driver}" />
<!--连接池的相应配置-->
<property name="maxPoolSize" value="${maxPoolSize}"></property>
<property name="minPoolSize" value="${minPoolSize}"></property>
<property name="initialPoolSize" value="${initialSize}"></property>
<property name="acquireIncrement" value="${acquireIncrement}"></property>
<property name="autoCommitOnClose" value="${autoCommitOnClose}"></property>
</bean>
<!--配置mybatis的工厂-->
<bean id="sessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--数据源-->
<property name="dataSource" ref="ds"></property>
<!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!--类的别名的包-->
<property name="typeAliasesPackage" value="org.lisonglin.entity"></property>
<!-- 扫描sql配置文件:mapper需要的xml文件 -->
<property name="mapperLocations" value="classpath:org/lisonglin/mapper/*.xml" />
</bean>
<!--spring和mybatis整合 (自动扫描映射接口)-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--指定ioc容器中的mybatis工厂的bean的名字-->
<property name="sqlSessionFactoryBeanName" value="sessionFactoryBean"></property>
<!--mapper所在的包-->
<property name="basePackage" value="org.lisonglin.mapper"></property>
</bean>
<!--声明式事务管理-->
<!--定义事物管理器,由spring管理事务 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="ds"></property>
</bean>
<!--支持注解驱动的事务管理,指定事务管理器 -->
<!--事务属性-->
<tx:advice id="advice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="*" isolation="READ_COMMITTED" propagation="REQUIRED"/>
<tx:method name="insert*" isolation="SERIALIZABLE" propagation="REQUIRED"></tx:method>
</tx:attributes>
</tx:advice>
<!--配置事务(拦截service)-->
<aop:config>
<!--切入点表达式-->
<aop:pointcut id="pc" expression="execution(* org.lisonglin.service.*.*(..))"></aop:pointcut>
<!--关联切入点表达式和事务属性-->
<aop:advisor advice-ref="advice" pointcut-ref="pc"></aop:advisor>
</aop:config>
<!--使事务注解起作用-->
<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
<!--只扫描controller的包以外的包-->
<context:component-scan base-package="org.lisonglin">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
</context:component-scan>
<!--aspectj支持自动代理实现AOP功能-->
<aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>
<!-- 拦截器方式配置事物 -->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="append*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="modify*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="repair" propagation="REQUIRED" />
<tx:method name="delAndRepair" propagation="REQUIRED" />
<tx:method name="get*" propagation="SUPPORTS" />
<tx:method name="find*" propagation="SUPPORTS" />
<tx:method name="load*" propagation="SUPPORTS" />
<tx:method name="search*" propagation="SUPPORTS" />
<tx:method name="datagrid*" propagation="SUPPORTS" />
<tx:method name="*" propagation="SUPPORTS" />
</tx:attributes>
</tx:advice>
</beans>
对应的jdbc.properties配置,如果出现以下错误
spring连接c3p0出现错误 Connections could not be acquired from the underlying database!
可以查看这篇博客解决方案
https://blog.csdn.net/qq_41520636/article/details/84344133
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/stus?useUnicode=true&characterEncoding=utf8&useSSL=false
jdbc.username=root
jdbc.password=123
#最大连接数
maxPoolSize=100
#最小连接数
minPoolSize=20
# 关闭连接后不自动commit
autoCommitOnClose=false
# 获取连接超时时间
checkoutTimeout=10000
# 初始化连接
initialSize=30
#driver default 指定由连接池所创建的连接的只读(read-only)状态。
#如果没有设置该值,则“setReadOnly”方法将不被调用。(某些驱动并不支持只读模式,如:Informix)
defaultReadOnly=
#driver default 指定由连接池所创建的连接的事务级别(TransactionIsolation)。
#可用值为下列之一:(详情可见javadoc。)NONE,READ_UNCOMMITTED, READ_COMMITTED, REPEATABLE_READ, SERIALIZABLE
defaultTransactionIsolation=READ_UNCOMMITTED
#连接数
acquireIncrement=30
在然后是mybatis-config.xml配置
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 配置全局属性 -->
<settings>
<!--允许返回多个结果集-->
<setting name="multipleResultSetsEnabled" value="true"></setting>
<!-- 使用jdbc的getGeneratedKeys获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true" />
<!-- 使用列别名替换列名 默认:true -->
<setting name="useColumnLabel" value="true" />
<!-- 开启驼峰命名转换:Table{create_time} -> Entity{createTime} -->
<setting name="mapUnderscoreToCamelCase" value="true" />
<!--二级缓存开关-->
<setting name="cacheEnabled" value="true"></setting>
<!--允许返回多个结果集-->
<setting name="multipleResultSetsEnabled" value="true"></setting>
<!--日志-->
<setting name="logImpl" value="LOG4J"></setting>
<!-- 延迟加载总开关 -->
<setting name="lazyLoadingEnabled" value="false"/>
<!-- 侵入懒加载,设置为false则按需加载,否则会全部加载 -->
<setting name="aggressiveLazyLoading" value="false"/>
<!--设置一个时限,以决定让驱动器等待数据库回应的多长时间为超时-->
<setting name="defaultStatementTimeout" value="25000" />
</settings>
<!-- mybatis分页插件 -->
<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
</plugins>
</configuration>
接着是log4j.properties的配置
#---- global logging configuration
#---- level: FATAL,ERROR,WARN,INFO,DEBUG
#---- appender: console, file, mail
### set log levels ###
log4j.rootLogger = DEBUG,console
### 输出到控制台 ###
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern = %d{yyyy-MM-dd HH\:mm\:ss} %5p %c{1}:%L - %m%n
### 输出到日志文件 ###
log4j.appender.file = org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.File = ${webapp.root}/WEB-INF/logs/platform.log
log4j.appender.file.DatePattern=_yyyyMMdd'.log'
#log4j.appender.file.Append = true
#log4j.appender.file.Threshold = INFO
log4j.appender.file.layout = org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern =%-d{yyyy-MM-dd HH\:mm\:ss} [ %t\:%r ] - [ %p ] %m%n
### 打印SQL ###
#log4j.logger.com.ibatis=DEBUG
#log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG
#log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG
#log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
#log4j.logger.java.sql.ResultSet=DEBUG
最后是spring-mvc.xml配置
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd ">
<!-- 自动扫描controller包下所有的类,成为spring mvc 的控制器-->
<context:component-scan base-package="org.lisonglin" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:include-filter>
</context:component-scan>
<!--视图解析器-->
<!--定义JSP文件的位置-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.InternalResourceView"/>
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
<property name="order" value="0"></property>
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.InternalResourceView"/>
<property name="prefix" value="/WEB-INF/html/" />
<property name="order" value="10"></property>
<property name="suffix" value=".html" />
</bean>
<!-- 视图解析器:通用视图名来解析视图(Excel) -->
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver">
<property name="order" value="100"></property>
</bean>
<context:annotation-config/>
<!-- 开启注解( 用于将对象转换为 JSON) -->
<mvc:annotation-driven/>
<!--处理静态资源-->
<mvc:default-servlet-handler></mvc:default-servlet-handler>
<!--
配置静态资源,直接映射到对应的文件夹,不被DispatcherServlet处理,3.04新增功能,需要重新设置spring-mvc-3.0.xsd
-->
<mvc:resources mapping="/img/**" location="/img/" />
<mvc:resources mapping="/js/**" location="/js/" />
<mvc:resources mapping="/css/**" location="/css/" />
<mvc:resources mapping="/html/**" location="/WEB-INF/html/" />
<!-- 定义文件上传解析器 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" p:defaultEncoding="UTF-8">
<!-- 设定文件上传的最大值为100MB,100*1024*1024 -->
<property name="maxUploadSize">
<value>104857600</value>
</property>
<property name="maxInMemorySize">
<value>40960</value>
</property>
</bean>
</beans>