整合SSM(Spring+SpringMVC+Mybatis)所有到的jar包和筆記
阿新 • • 發佈:2019-02-11
1.匯入Spring、Mybatis、log4j等相關jar包
整合SSM框架需要配置如下檔案:
web.xml
applicationContext.xml(配置Spring)
springmvc-servlet.xml(配置SpringMVC)
log4j.properties(配置log輸出)
mybatis.xml(配置Mybatis)
*Mapper.xml(配置sql)
2.配置web.xml檔案
配置DispatcherServlet,引入SpringMVC檔案。
<!--配置springmvcDispatcherServlet的設定和配置對映 --> <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-servlet.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>
配置ContextLoaderListener監聽器,引入Spring配置檔案
<!-- 配置掃描SpringIOC的資原始檔 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param>
配置編碼集
<!-- 配置編碼集 --> <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>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
3.applicationContext.xml檔案
配置Spring掃描的包路徑
<!-- 掃描SpringIOC -->
<context:component-scan base-package="com.ssm"></context:component-scan>
配置Mybatis,資料庫連線也配置在這裡了,沒有使用properties檔案,因為我使用properties檔案出現了型別轉換異常。
<!-- MyBatis配置 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 顯式指定Mapper檔案位置 -->
<property name="mapperLocations" value="classpath:/com/ssm/config/mybatis/sqlxml/*Mapper.xml" />
<!-- mybatis配置檔案路徑 -->
<property name="configLocation" value="classpath:/com/ssm/config/mybatis/mybatis.xml"/>
</bean>
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory" />
<!-- 這個執行器會批量執行更新語句, 還有SIMPLE 和 REUSE -->
<constructor-arg index="1" value="BATCH" />
</bean>
<!-- 掃描basePackage介面 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 對映器介面檔案的包路徑, -->
<property name="basePackage" value="com.ssm.dao" />
</bean>
<!-- 使用annotation定義事務 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
<!-- 資料來源配置, 使用Tomcat JDBC連線池 -->
<bean id="dataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close">
<!-- Connection Info -->
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://127.0.0.1:3306/mybatis?useUnicode=true&characterEncoding=utf-8&autoReconnect=true&allowMultiQueries=true" />
<property name="username" value="root" />
<property name="password" value="x5" />
<!-- Connection Pooling Info -->
<property name="maxActive" value="50" />
<property name="maxIdle" value="10" />
<property name="minIdle" value="0" />
<property name="defaultAutoCommit" value="false" />
</bean>
4.配置springmvc-servlet.xml
在SpringMVC中只需要配置掃描包和檢視路徑
<!-- 掃描SpringmvcIOC -->
<context:component-scan base-package="com.ssm.*"></context:component-scan>
<!-- 配置檢視路徑 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<!-- 字首 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 字尾 -->
<property name="suffix" value=".jsp" />
</bean>
以下為其他配置
<!-- 不處理靜態資源 -->
<mvc:default-servlet-handler />
5.log4j.properties
配置log4j
log4j.rootLogger=INFO,Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.org.apache=INFO
#log4j.logger.org.mybatis=DEBUG
log4j.logger.com.ssm.dao=DEBUG
6.配置mybatis.xml
只需要配置一句。
<settings>
<setting name="cacheEnabled" value="true" />
</settings>
7.*Mapper.xml
這裡配置sql
<select id="selectAll" resultType="com.ssm.bean.Book">
select * from Book where 1=1
</select>
配置完成之後執行sql的時候很有可能會出現下面的問題:
十二月 22, 2017 11:19:33 上午 org.apache.tomcat.jdbc.pool.ConnectionPool init
嚴重: Unable to create initial connections of pool.
java.sql.SQLException: com.mysql.jdbc.Driver
…
這個問題是因為tomcat的lib包中沒有com.mysql.jdbc.Driver驅動類,
需要將mysql-connector-java-5.1.7-bin.jar包拷貝到tomcat的lib資料夾下。