Spring+SringMVC+Mybatis整合（idea版本，Maven管理項目）
前言：最近剛把SSM框架過了一遍，爲了防止忘記配置，特地記錄一下SSM整合的過程java
搭建環境以及版本介紹
本人採用的是idea2017，Maven3.6.1，Spring 5.1.6.RELEASE，Mybatis 3.5.0mysql
建立JavaWeb項目
建立後的目錄結構以下 git
引入依賴
pom.xml文件以下，有點多，可是裏面的東西確實比較好用，推薦使用github
<?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>cn.kt</groupId>
<artifactId>SSM</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<!--自動生成mapper.xml-->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build>
<!--框架版本信息-->
<properties>
<springVersion>5.1.6.RELEASE</springVersion>
<mybatisVersion>3.5.0</mybatisVersion>
</properties>
<dependencies>
<!--junit用於單元測試-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
</dependency>
<!--druid-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.17</version>
</dependency>
<!--mysql數據庫驅動-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.15</version>
</dependency>
<!--日誌log4j-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<!--緩存ehcache-->
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>2.6.11</version>
</dependency>
<!--分頁插件-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.10</version>
</dependency>
<!--cglib用於動態代理-->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.2.12</version>
</dependency>
<!--mybatis-spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.0</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatisVersion}</version>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${springVersion}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.12</version>
</dependency>
</dependencies>
</project>
複製代碼
配置文件
這裏我使用mybatis-generator這個插件來生成*Mapper.xml文件，對於通常的CURD基本上是都包括了，強烈推薦web
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>
<!--你的數據庫驅動位置-->
<classPathEntry
location="D:\Maven\localRepository\mysql\mysql-connector-java\8.0.15\mysql-connector-java-8.0.15.jar"/>
<context id="mysqlgenerator" targetRuntime="MyBatis3">
<!--不生成註釋-->
<commentGenerator>
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!-- 配置數據庫鏈接 -->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/mybatis?serverTimezone=GMT"
userId="root"
password="你的密碼"/>
<!-- 指定javaBean生成的位置 -->
<javaModelGenerator targetPackage="cn.kt.domain" targetProject="src/main/java">
<!-- 在targetPackage的基礎上，根據數據庫的schema再生成一層package，最終生成的類放在這個package下，默認爲false -->
<property name="enableSubPackages" value="true"/>
<!-- 設置是否在getter方法中，對String類型字段調用trim()方法 -->
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!--指定sql映射文件生成的位置 -->
<sqlMapGenerator targetPackage="cn.kt.mapper" targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<!-- 指定dao接口生成的位置，mapper接口 -->
<javaClientGenerator type="XMLMAPPER" targetPackage="cn.kt.mapper" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<!-- table表生成對應的DoaminObject -->
<table tableName="student" domainObjectName="Student"/>
</context>
</generatorConfiguration>
複製代碼
配置完成後 啓動插件：打開maven->Plugins->mybatis-generator,直接運行就能夠裏spring
特別說明 StudentExample這個類是爲了實現QBC（query by criteria）查詢sql
db.properties 數據庫相關的屬性配置，記得在url後添加serverTimezone的設置
driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/mybatis?serverTimezone=GMT%2B8&useSSL=false
name=root
password=你的密碼
maxActive=100
maxIdle=50
initialSize=20
timeBetweenEvictionRunsMillis=60000
minEvictableIdleTimeMillis=300000
複製代碼
applicationContext-mybatis.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>
<settings>
<!--這些都是可選項-->
<!--啓用緩存，記得在Mapper.xml文件中啓用緩存-->
<setting name="cacheEnabled" value="true"/>
<!--啓用log4j-->
<setting name="logImpl" value="LOG4J"/>
<!--懶加載-->
<setting name="lazyLoadingEnabled" value="true"/>
<setting name="aggressiveLazyLoading" value="false"/>
<setting name="lazyLoadTriggerMethods" value="clone"/>
</settings>
<plugins>
<!--分頁插件-->
<plugin interceptor="com.github.pagehelper.PageInterceptor">
<property name="pageSizeZero" value="true"/>
</plugin>
</plugins>
</configuration>
複製代碼
applicationContext-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">
<!--<!–處理器映射器–>
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
<!–處理器適配器–>
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>-->
<!--等效於上面兩個-->
<mvc:annotation-driven/>
<!--視圖解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--前綴-->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!--後綴-->
<property name="suffix" value=".jsp"/>
</bean>
<!--須要掃描的包-->
<context:component-scan base-package="cn.kt"/>
</beans>
複製代碼
applicationContext.xml spring主配置文件
<?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:mvc="http://www.springframework.org/schema/mvc"
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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--引入數據庫配置文件-->
<context:property-placeholder location="classpath:db.properties"/>
<context:component-scan base-package="cn.kt"></context:component-scan>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="url" value="${url}"/>
<property name="username" value="${name}"/>
<property name="password" value="${password}"/>
<property name="driverClassName" value="${driver}"/>
<!-- 配置初始化大小、最小、最大 -->
<property name="initialSize" value="${initialSize}"/>
<property name="minIdle" value="${maxIdle}"/>
<property name="maxActive" value="${maxActive}"/>
<!-- 配置獲取鏈接等待超時的時間 -->
<property name="maxWait" value="60000"/>
<!-- 配置間隔多久才進行一次檢測，檢測須要關閉的空閒鏈接，單位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}"/>
<!-- 配置一個鏈接在池中最小生存的時間，單位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}"/>
</bean>
<!--建立SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--鏈接池-->
<property name="dataSource" ref="dataSource"/>
<!--掃描Mapper.xml配置文件-->
<property name="mapperLocations" value="classpath:cn/kt/mapper/*.xml"/>
<!--mybatis相關配置-->
<property name="configLocation" value="classpath:applicationContext-mybatis.xml"/>
</bean>
<bean id="session" factory-bean="sqlSessionFactory" factory-method="openSession" scope="prototype"/>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cn.kt.mapper"/>
</bean>
<!--spring管理事務-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
複製代碼
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<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:applicationContext-springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext*.xml</param-value>
</context-param>
<!--解決post亂碼-->
<filter>
<filter-name>Encoding</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>
</filter>
<filter-mapping>
<filter-name>Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--監聽器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<!--防止spring內存溢出監聽器-->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
</web-app>
複製代碼
ehcacahe.xml 若是沒有在mybatis配置文件中啓用ehcache能夠不用配置
<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd">
<!-- 磁盤保存路徑 -->
<diskStore path="F:/out/mybatis_cache"/>
<defaultCache
maxElementsInMemory="1"
maxElementsOnDisk="10000000"
eternal="false"
overflowToDisk="true"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU">
</defaultCache>
</ehcache>
複製代碼
log4j.properties,一樣若是沒有啓用也不用配置
### 設置###
log4j.rootLogger = ERROR ,stdout
log4j.logger.cn.kt.mapper=TRACE
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
複製代碼
至此，SSM的配置文件就算寫完了
最後記得把maven引入的依賴倒入war包，否則運行起來會報ClassNotFound的bug數據庫
測試
編寫一個controller
@Controller
public class MyController {
@Autowired
private MyService myService;
@RequestMapping("/test")
public ModelAndView controller(){
myService.service();
ModelAndView modelAndView=new ModelAndView();
modelAndView.setViewName("hello");
return modelAndView;
}
}
複製代碼
一個service
@Service
public class MyService {
@Autowired
StudentMapper studentMapper;
public void service(){
StudentExample studentExample=new StudentExample();
StudentExample.Criteria criteria1 = studentExample.createCriteria();
criteria1.andAgeBetween(1,10);
List<Student> list=studentMapper.selectByExample(studentExample);
System.out.println(list);
}
}
複製代碼
在地址欄輸入相應的路徑， http://localhost:8080/項目名/test service層成功查詢到了數據，在控制檯輸出apache
瀏覽器也成功跳轉至相應的頁面瀏覽器
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