整合步骤 0、搭建动态web项目 1、需要的jar包 spring(包括springmvc) mybatis相关jar包 mybatis与spring的整合包(个人建议尽量使用高版本的,避免出现一些奇怪的错误mybatis-spring-2.0.2.jar) 数据
整合步骤
0、搭建动态web项目
1、需要的jar包
- spring(包括springmvc)
- mybatis相关jar包
- mybatis与spring的整合包(个人建议尽量使用高版本的,避免出现一些奇怪的错误mybatis-spring-2.0.2.jar)
- 数据库驱动包(mysql-connector-java-5.1.44.jar)
- 第三方连接池(druid-1.1.10.jar,也可用spring的dbcp连接池或c3p0连接池c3p0-0.9.5.2.jar)
- json依赖包Jackson
jstl标签库
以下为可选- 另外,若要使用mybatis逆向工程,需导入mybatis-generator-core-1.3.5.jar以及增加配置文件
mbg.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> <context id="DB2Tables" targetRuntime="MyBatis3"> <commentGenerator> <property name="suppressAllComments" value="true" /> </commentGenerator> <!-- 配置数据库连接 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/ssm_crud" userId="root" password="123"> </jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 指定Javabean生成的位置 --> <javaModelGenerator targetPackage="com.fei.pojo" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 指定sql映射文件生成的位置 --> <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources"> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!-- 指定mapper(dao)接口生成的位置 --> <javaClientGenerator type="XMLMAPPER" targetPackage="com.fei.mapper" targetProject=".\src\main\java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!-- 指定每个表的生成策略 --> <table tableName="tbl_emp" domainObjectName="Employee"></table> <table tableName="tbl_dept" domainObjectName="Department"></table> </context> </generatorConfiguration>
还有核心主程序
package com.fei.test; import java.io.File; import java.util.ArrayList; import java.util.List; import org.mybatis.generator.api.MyBatisGenerator; import org.mybatis.generator.config.Configuration; import org.mybatis.generator.config.xml.ConfigurationParser; import org.mybatis.generator.internal.DefaultShellCallback; /** * mybatis代码生成主程序 * @Author xiaofei * @CreateDate 2019年9月2日 */ public class MBGTest { public static void main(String[] args) throws Exception { List<String> warnings = new ArrayList<String>(); boolean overwrite = true; File configFile = new File("mybatis-generator.xml"); ConfigurationParser cp = new ConfigurationParser(warnings); Configuration config = cp.parseConfiguration(configFile); DefaultShellCallback callback = new DefaultShellCallback(overwrite); MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings); myBatisGenerator.generate(null); System.out.println("代码生成完毕!请查收"); } }
- 若要使用分页插件,还需导入pagehelper-5.1.2.jar和jsqlparser-1.0.jar
- 若要使用文件上传还要另外导相关的包
2、整合思路
- dao层
- sqlMapConfig.xml,空文件即可,但是需要文件头
- applicationContext-dao.xml
- 数据库连接池druid
- sqlSessionFactory对象,需要spring和mybatis整合包下的
- 配置mapper文件扫描器,Mapper动态代理开发增强版
- service层
- applicationContext-service.xml:配置包扫描器,扫描@service注解的组件类
- applicationContext-tx.xml配置事务
- web层
- springmvc.xml:核心三大组件
- web.xml:前端控制器、拦截器、编码过滤器等
也可以将dao层和service层的配置在一个文件中
下面是配置文件,我把dao层的applicationContext-dao.xml和applicationContext-service.xml写到一个配置文件spring-mybatis.xml中
3、配置文件编写
- applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd "> <!-- spring的配置文件,这里主要配置业务和逻辑有关的配置,包括数据源,事务控制 --> <context:component-scan base-package="com.fei.service"> <!-- <context:exclude-filter type="annotation" expression=" org.springframework.stereotype.Controller"/> --> </context:component-scan> <!-- ==================数据源的配置start================== --> <!-- 告诉spring让他去读取db.properties配置文件 --> <context:property-placeholder location="classpath:db.properties"/> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${jdbc.driver}"/> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </bean> <!-- ==================数据源的配置end================== --> <!-- ==============配置spring和mybatis的整合start============== --> <!-- MyBatis工厂 --> <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <!-- 指定mybatis核心配置文件的位置 --> <property name="configLocation" value="classpath:sqlMapConfig.xml"/> <!-- 指定mapper文件的位置 --> <property name="mapperLocations" value="classpath:mapper/*.xml"/> </bean> <!-- 配置扫描器,将mybatis接口的实现(一个代理对象)加入到ioc容器中,Mapper动态代理开发,扫描 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 指定基本包,扫描所有mapper接口的实现,加入到ioc容器中 --> <property name="basePackage" value="com.fei.mapper"/> </bean> <!-- 配置一个可以执行批量操作的sqlSession --> <bean id="sqlSession" class=" org.mybatis.spring.SqlSessionTemplate"> <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactoryBean"/> <constructor-arg name="executorType" value="BATCH"/> </bean> <!-- ==============配置spring和mybatis的整合end============== --> <!-- ====================事务控制的配置start==================== --> <!-- 注解事务 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 控制住数据源里面连接的开启、关闭、回滚等操作 --> <property name="dataSource" ref="dataSource"/> </bean> <!-- 1)开启基于注解的事务 --> <!-- <tx:annotation-driven transaction-manager="transactionManager"/> --> <!-- 2)开启基于xml配置的事务(比较重要的都是用配置形式) --> <aop:config> <!-- 切入点表达式 --> <aop:pointcut expression="execution(* com.fei.service..*(..))" id="txPoint"/> <!-- 配置事务增强 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/> </aop:config> <!-- 配置事务增强,事务如何切入 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 所有的方法都是事务方法 --> <tx:method name="*"/> <tx:method name="get*" read-only="true"/> </tx:attributes> </tx:advice> <!-- ====================事务控制的配置end==================== --> <!-- spring配置文件核心点(数据源,与mybatis的整合,事务控制) --> <!-- springmvc的异常处理器 --> <!-- <bean class="com.fei.exception.CustomExceptionResolver"/> --> </beans>
- springmvc.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:mvc="http://www.springframework.org/schema/mvc" 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"> <!-- springmvc的配置文件,主要包含网站跳转的逻辑控制 --> <!-- 配置controller扫描,精准扫描 --> <context:component-scan base-package="com.fei.controller" /> <!-- 定义视图文件解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> <!-- 两个标准配置 --> <!-- 将springmvc不能处理的请求交给tomcat --> <mvc:default-servlet-handler/> <!-- 能支持一些springmvc更高级的一些功能,JSR303校验,快捷的ajax...,映射动态请求 --> <mvc:annotation-driven/> <!-- ================ 上面是springmvc的基本配置 ================ --> <!-- 对静态资源放行 --> <!-- <mvc:resources location="/css/" mapping="/css/**"/> <mvc:resources location="/js/" mapping="/js/**"/> <mvc:resources location="/fonts/" mapping="/fonts/**"/> <mvc:resources location="/img/" mapping="/img/**"/> <mvc:resources location="/bower_components/" mapping="/bower_components/**"/> <mvc:resources location="/dist/" mapping="/dist/**"/> <mvc:resources location="/plugins/" mapping="/plugins/**"/> --> <!-- 配置拦截器(多个) --> <!-- <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**"/> <mvc:exclude-mapping path="/login"/> <mvc:exclude-mapping path="/static/**"/> <bean class="com.fei.ssmcrm.interceptor.LoginInterceptor"/> </mvc:interceptor> </mvc:interceptors> --> <!-- 读取配置文件,解决硬编码问题 --> <!-- <context:property-placeholder location="classpath:code-params.properties" /> --> </beans>
- db.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql:///ssm_crud?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=123
- sqlMapConfig.xml
<?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> <!-- 配置别名,放置实体类 --> <typeAliases> <package name="com.fei.pojo"/> </typeAliases> <!-- pagehelper分页插件注册 --> <plugins> <plugin interceptor="com.github.pagehelper.PageInterceptor"> <!-- 分页参数合理化 --> <property name="resonable" value="true"/> </plugin> </plugins> </configuration>
- web.xml
<?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"> <!-- 1、启动spring容器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 2、springmvc的前端控制器,拦截所有请求 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 3、字符编码过滤器,一定要放在所有过滤器之前 --> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceRequestEncoding</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>forceResponseEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 4、使用Restful风格的URI,将页面普通的post请求转为指定的delete或put请求 --> <filter> <filter-name>HiddenHttpMethodFilter</filter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class> </filter> <filter-mapping> <filter-name>HiddenHttpMethodFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 处理直接发送put请求的过滤器 --> <filter> <filter-name>HttpPutFormContentFilter</filter-name> <filter-class> org.springframework.web.filter.HttpPutFormContentFilter</filter-class> </filter> <filter-mapping> <filter-name>HttpPutFormContentFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>