Spring 、springMVC、 jpa 三大框架的集成配置

￡神魔★判官ぃ 2022-04-15 03:07 139阅读 0赞

一：什么是SSj  
Spring springMVC jpa 三大框架  
二：spring xml的配置  
需要添加 context tx  
扫描需要：context 事务需要：tx

1.扫描dao层，扫描业务层

<context:component-scan base-package="cn.itsource.ssj.dao" />
            		
            	<context:component-scan base-package="cn.itsource.ssj.service" />

2.配置jdbc.properties

<context:property-placeholder location="classpath:jdbc.properties" />
        
    jdbc.properties文件配置  注意：尽量在前面加一个jdbc.的前缀，避免与spring内部冲突
    jdbc.driverClassName=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql:///ssj
    jdbc.username=root
    jdbc.password=root

3.配置jdbc数据源

这里的表达式：${} 引用我们前一步配置的数据
            <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
            <property name="driverClassName" value="${jdbc.driverClassName}" />
            <property name="url" value="${jdbc.url}" />
            <property name="username" value="${jdbc.username}" />
            <property name="password" value="${jdbc.password}" />
        </bean>

4.配置一个EntityManagerFactory 快捷键Alt+Insert JPA

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
      
            <property name="dataSource" ref="dataSource"/>
            
            <property name="packagesToScan" value="cn.itsource.ssj.domain" />
            
            <property name="jpaVendorAdapter">
                <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                    
                    <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
                    
                    <property name="showSql" value="true" />
                    
                    <property name="generateDdl" value="true" />
                </bean>
            </property>
        </bean>

5.配置事务

<!—这里的 transactionManager 是默认的名字，若要自定义名字则在支持事务注解的属性中配对修改—>
        <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
            <property name="entityManagerFactory" ref="entityManagerFactory"/>
        </bean>
        
        <tx:annotation-driven transaction-manager="transactionManager" />

三：springMVC .xml中的配置  
需要添加：context mvc  
扫描包需要：context 静态资源放行需要：mvc 支持springmvc注解需要：mvc

1.扫描表现层

<context:component-scan base-package="cn.itsource.ssj.Controller"></context:component-scan>

2.支持springMVC注解

<mvc:annotation-driven/>

3.静态资源放行

<mvc:default-servlet-handler/>

4.视图解析器

4.文件上传

<value>${1024*1024*10}</value>
            </property>
        </bean>-->

四：web xml中的配置  
1.Spring监听器的配置  
Spring监听器会找到相应的配置文件 找到 对应的spring配置文件

<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.spring mvc 核心控制器的配置

<servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        
        <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:applicationContext-mvc.xml</param-value>
        </init-param>
        
        <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
        
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>

3.配置解决中文乱码问题

<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>

4.过滤所有请求

<filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
      </filter-mapping>