SSM:SpringMVC、SpringBean

SSM配置web、pom

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <mvc:annotation-driven></mvc:annotation-driven>

    <context:component-scan base-package="com.cn"></context:component-scan>

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

Spring-config.xml

按照需求,头部,另外配置mvc、context,上面的copy只需要改最后面的一个单词即可,下面的copy后共需要改3个

mvc:annotation-driven:注解驱动

context:component-scan:注解扫描,所有的包里基本上都有注解需要扫描,所以,base-package是所有Java包,即com.cn

然后,是试图解析,改变controller返回值,添加前缀和后缀

### 把日志信息输出到控制台 ###

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n



### 设置优先级别,以及输出源###
log4j.rootLogger=debug,stdout

log4j.properties

使控制台的运行记录、报错更加规范

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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
    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">

    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="user" value="${user}"></property>
        <property name="password" value="${pass}"></property>
        <property name="jdbcUrl" value="${url}"></property>
        <property name="driverClass" value="${driver}"></property>
        <property name="initialPoolSize" value="${initPool}"></property>
        <property name="maxPoolSize" value="${maxPool}"></property>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="typeAliasesPackage" value="com.cn.model"></property>
    </bean>

    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.cn.mapper"></property>
    </bean>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="insert*" propagation="REQUIRED"></tx:method>
            <tx:method name="delete*" propagation="REQUIRED"></tx:method>
            <tx:method name="update*" propagation="REQUIRED"></tx:method>
            <tx:method name="*" read-only="true"></tx:method>
        </tx:attributes>
    </tx:advice>

    <aop:config>
        <aop:pointcut id="pointCut" expression="execution(* com.cn.services.*.*(..))"></aop:pointcut>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointCut"></aop:advisor>
    </aop:config>

</beans>

applicationContext-common.xml

Spring核心配置,bean的工厂

1.头部配置context、aop、tx

2.引入db.properties

user=root
pass=root
url=jdbc:mysql://localhost:3306/cn?characterEncoding=utf-8
driver=com.mysql.jdbc.Driver
initPool=3
maxPool=20

3.dataSource

使用c3p0的

ComboPooledDataSource

连接数据库

属性包括:用户名、密码、连接地址、数据库的驱动类、最小连接数、最大连接数

4.SqlSessionFactoryBean

(1)依赖注入dataSource

(2)别名配置

typeAliasesPackage

com.cn.model:实体类

5.MapperScannerConfigurer

Mapper扫描设置

basePackage:com.cn.mapper--dao包

6.DataSourceTransactionManager

数据源的事务管理

(1)依赖注入dataSource

7.tx:advice

切点配置

transactionManager为上面的数据源的事务管理

tx:attributes:指明哪些方法需要提交事务,只有insert、update、delete需要,其他的视为只读。

propagation="REQUIRED":事务传播特性

当前存在事务就继续使用,没有就创建

8.

aop:config 切面配置,aop是面向切面

aop:pointcut      execution(* com.cn.services.*.*(..))

这个services(biz)包下,需要tx:advice

aop:advisor :advice-ref="txAdvice" pointcut-ref="pointCut"  为切面配置切点

applicationContext-common.xml配置成功!

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转载自blog.csdn.net/qq_43532342/article/details/83859688