Spring_SSJ集成

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原创最新推荐文章于 2026-03-07 08:35:51 发布 609 阅读 AI 写同款· GEO 优化 ›

spring框架ssj ssj的整合, 简单的spring框架搭建，mysql数据库的crud, 立即下载

文章目录

1 三大框架

1.1 ssh

struts
spring
hibernate
(struts2 Spring Hibernate)

1.2 ssm(最流行的框架)

SpringMVC
Spring
MyBatis

1.3 ssj(Spring springMvc jpa)

Struts2 Spring JPA
SpringMVC Spring JPA
SpringMVC Spring spring Data JPA（spring的全家桶）

2 Spring集成JPA

<dependencies>
<!-- spring和springmvc整合包-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>4.2.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>4.2.5.RELEASE</version>
</dependency>
<!-- springjdbc的包-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>4.2.5.RELEASE</version>
</dependency>
<!-- Spring和ORM(JPA)整合的包-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>4.2.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>4.3.8.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>4.3.8.Final</version>
</dependency>
<!-- mysql数据库-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.6</version>
</dependency>
<!-- 连接池-->
<dependency>
    <groupId>commons-dbcp</groupId>
    <artifactId>commons-dbcp</artifactId>
    <version>1.2.2</version>
</dependency>
<!-- Spring测试-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>4.2.5.RELEASE</version>
</dependency>
<!-- Springaop-->
<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.8.9</version>
</dependency>
<!-- 处理json的包-->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.6.5</version>
</dependency>

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
    <scope>test</scope>
</dependency>
</dependencies>

2.1 加载jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///ssj
jdbc.username=root
jdbc.password=root

2.2 配置ApplicationContext.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: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/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!--开启注解扫描-->
    <context:component-scan base-package="cn.itsource" />
    
    <!-- 加载jdbc.properties -->
    <context:property-placeholder location="classpath:jdbc.properties" />
    
    <!-- 配置连接池dataSource -->
    <!-- destroy-method="close当前bean销毁的时候，会先调用close方法，关闭连接" -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <!-- 依赖注入连接池需要的属性 -->
        <!-- property name="是BasicDataSource的set方法，本质属性" -->
        <!-- property value="是jdbc.properties配置文件的key" -->
        <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>

    <!--得到EntityManagerFactory-->
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <!--配置属性-->
        <property name="dataSource" ref="dataSource" />
        <!--扫描实体类-->
        <property name="packagesToScan" value="cn.itsource.domain" />
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <!--是否显示sql-->
                <property name="showSql" value="true" />
                <!--是否创建表-->
                <property name="generateDdl" value="true" />
                <!--数据库方言-->
                <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
            </bean>
        </property>
    </bean>

    <!--事物管理器-->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>
    <!--开启事物  扫描@Transaction这种注解-->
    <tx:annotation-driven />

</beans>

2.3 spring事物传播机制

事物的传播机制 Propagation
Propagation.REQUIRED
表示当前方法必须运行在事物中

Propagation.SUPPORTS
表示当前不需要事物，如果存在当前事物那么就在这个事物中运行

Propagation.MANDATORY
表示该方法必须在事务中运行，如果当前事务不存在，则会抛出一个异常

Propagation.REQUIRES_NEW
表示当前方法必须运行在它自己的事务中。一个新的事务将被启动。如果存在当前事务，在该方法执行期间，
当前事务会被挂起。如果使用JTATransactionManager的话，则需要访问TransactionManager

Propagation.NOT_SUPPORTED
表示该方法不应该运行在事务中。如果存在当前事务，在该方法运行期间，当前事务将被挂起。
如果使用JTATransactionManager的话，则需要访问TransactionManager

Propagation.NEVER
表示当前方法不应该运行在事务上下文中。如果当前正有一个事务在运行，则会抛出异常

Propagation.NESTED
表示如果当前已经存在一个事务，那么该方法将会在嵌套事务中运行。嵌套的事务可以独立于当前事务进行单独地提交或回滚。
如果当前事务不存在，那么其行为与PROPAGATION_REQUIRED一样。注意各厂商对这种传播行为的支持是有所差异的。

2.3.1 事物配置

readOnly = true
只读

@Transactional(propagation = Propagation.SUPPORTS,readOnly = true)
public class ProductServiceImpl implements IProductService

如果自身的方法配置传播机制方法上面就采用自己配置注解

@Transactional(propagation = Propagation.REQUIRED)
public void save(Product product) {
    productDao.save(product);
}

3 SpringMVC和spring集成或者整合

3.1 配置web.xml

导入jar --spring-web /spring-webmvc

配置springmvc配置文件
配置前缀后缀 (视图解析器)
静态资源放行
上传解析器
扫描@RequestMapping注解

<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_3_1.xsd"
         version="3.1">

    <!--处理懒加载关闭问题-->
    <filter>
        <filter-name>OpenEntityManagerInViewFilter</filter-name>
        <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
    </filter>

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


    <!--监听器读取配置-->
    <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>

    <!--字符编码过滤器-->
    <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>


    <!--核心控制器-->
    <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>
</web-app>

3.2 配置ApplicationContext-mvc.xml

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

    <context:component-scan base-package="cn.itsource.web.controller" />

    <!--静态资源放行-->
    <mvc:default-servlet-handler />

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

    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

3.3 修改web.xml，解决延迟加载的异常

<!-- 添加关闭entityManger过滤器，必须在struts2过滤器之前 -->
<filter>
	<filter-name>OpenEntityManagerInViewFilter</filter-name>
	<filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
</filter>

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

在Product类里面配置

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name="dir_id")
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
private ProductDir productDir;