SSM整合

整合思路

选择XML + 注解的方式

搭建整合的环境
配置Spring
配置SpringMVC，再使用Spring整合SpringMVC
配置Mybatis，最后使用Spring整合Mybatis

环境搭建

利用Maven骨架创建webapp项目，在pom.xml中导入依赖的坐标

<properties>
    <!--版本锁定-->
    <spring.version>5.0.2.RELEASE</spring.version>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
    <mysql.version>5.1.6</mysql.version>
    <mybatis.version>3.4.5</mybatis.version>
</properties>
<dependencies>
    <!-- spring -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.6.8</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- log start -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <!-- log end -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
</dependencies>

创建数据库

create table account(
	id int primary key auto_increment,
	name varchar(20),
	money double
);

创建实体类

public class Account implements Serializable {
    private Integer id;
    private String name;
    private Double money;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

    @Override
    public String toString() {
        return "Account{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", money=" + money +
                '}';
    }
}

创建dao层接口

public interface AccountDao {

    /**
     * 查询所有账户
     * @return
     */
    List<Account> findAll();

    /**
     * 保存账户
     * @param account
     */
    void saveAccount(Account account);
}

创建service层接口及其实现类

public interface AccountService {
    /**
     * 查询所有账户
     * @return
     */
    List<Account> findAll();

    /**
     * 保存账户
     * @param account
     */
    void saveAccount(Account account);
}

public class AccountServiceImpl implements AccountService {

    private AccountDao accountDao;

    @Override
    public List<Account> findAll() {
        System.out.println("业务层：查询所有账户");
        return accountDao.findAll();
    }

    @Override
    public void saveAccount(Account account) {
        accountDao.saveAccount(account);
    }
}

在resources目录下创建连接数据库属性文件jdbcConfig.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf-8&useSSL=false
jdbc.username=root
jdbc.password=...

log4j.properties日志文件

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

配置Spring

在resources目录下创建Spring配置文件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: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/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">

    <!--配置spring创建容器时要扫描的包-->
    <context:component-scan base-package="com.chenpeng">
        <!--配置要忽略的注解-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
</beans>

在dao层接口上配置注解

@Repository
public interface AccountDao

为service层接口实现类配置注解

@Service("accountService")
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;
    ...
}

创建测试类测试通过

public class SpringTest {
    @Test
    public void testOne(){
        ApplicationContext ac = new ClassPathXmlApplicationContext("ApplicationContext.xml");
        AccountService as = ac.getBean("accountService", AccountService.class);
        as.findAll();
    }
}

配置SpringMVC

在resources目录下创建SpringMVC配置文件SpringMVC.xml

<?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">

    <!--配置扫描Controller的注解，其他的不扫描-->
    <context:component-scan base-package="com.chenpeng">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

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

    <!--配置哪些静态资源不过滤-->
    <mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
    <mvc:resources location="/css/" mapping="/css/**"></mvc:resources>
    <mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
    
    <!--配置开启spring注解mvc的支持-->
    <mvc:annotation-driven/>
</beans>

在webapp/WEB-INF/目录下的web.xml中添加配置

<!--配置前端控制器-->
  <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:SpringMVC.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>
<!--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>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

创建控制器类com.chenpeng.controller.AccountController

@Controller
@RequestMapping(path = "/account")
public class AccountController {

    @Autowired
    private AccountService accountService;

    @RequestMapping(path = "/findAll")
    public String findAll(Model model){
        System.out.println("表现层：查询所有账户");
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "success";
    }

    @RequestMapping(path = "/saveAccount")
    public void saveAccount(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return;
    }
}

在webapp目录下创建index.jsp，在webapp/WEB-INF目录下创建pages目录，在其中创建success.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <a href="account/findAll">测试查询</a>

    <h3>测试保存</h3>
    <form action="account/saveAccount" method="post">
        姓名：<input type="text" name="name"><br>
        金钱：<input type="text" name="money"><br>
        <input type="submit" value="提交">
    </form>
</body>
</html>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1>查询所有账户</h1>
<c:forEach items="${list}" var="account">
    ${account.name}
</c:forEach>
</body>
</html>

Spring整合SpringMVC

在web.xml中配置监听器ContextLoaderListener，该监听器可以监听ServletContext的创建和销毁，ServletContext的创建和销毁与Tomcat是同步的，而ContextLoaderListener默认加载WEB-INF目录下的ApplicationContext.xml配置文件，所以要设置配置文件的路径

<!--配置Spring的监听器，默认值加载WEB-INF目录下的ApplicationContext.xml配置文件-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--设置配置文件的路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:ApplicationContext.xml</param-value>
  </context-param>

配置Mybatis

在resources目录下创建Mybatis主配置文件SqlMapConfig.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>
    <!--配置环境-->
    <environments default="mysql">
        <environment id="mysql">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/ssm"/>
                <property name="username" value="root"/>
                <property name="password" value="..."/>
            </dataSource>
        </environment>
    </environments>
    <!--配置mappers-->
    <mappers>
        <package name="com.chenpeng.dao"/>
    </mappers>
</configuration>

为dao层方法配置注解

@Repository
public interface AccountDao {

    /**
     * 查询所有账户
     * @return
     */
    @Select("select * from account")
    List<Account> findAll();

    /**
     * 保存账户
     * @param account
     */
    @Insert("insert into account(name,money) values(#{name},#{money})")
    void saveAccount(Account account);
}

创建测试类测试通过

public class TestMybatis {

    private InputStream in;
    private SqlSession sqlSession;
    private AccountDao accountDao;

    @Before
    public void init() throws IOException {
        in = Resources.getResourceAsStream("SqlMapConfig.xml");
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
        sqlSession = factory.openSession(true);
        accountDao = sqlSession.getMapper(AccountDao.class);
    }

    @After
    public void destroy() throws IOException {
        sqlSession.close();
        in.close();
    }

    @Test
    public void testFindAll() {
        List<Account> list = accountDao.findAll();
        for (Account account : list) {
            System.out.println(account);
        }

    }

    @Test
    public void testSaveAccount(){
        Account account = new Account();
        account.setName("cc");
        account.setMoney(666.0);
        accountDao.saveAccount(account);
    }
}

Spring整合Mybatis

让spring来管理SqlSession的创建，即在spring配置文件中配置SqlSessionFactory工厂，并且不再需要SqlMapConfig.xml，在ApplicationContext.xml中配置Mybatis

<!--Spring整合Mybatis框架-->
    <context:property-placeholder location="classpath:jdbcConfig.properties"/>
    <!--配置连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--配置SqlSession工厂-->
    <bean id="SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置AccountDao接口所在包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.chenpeng.dao"/>
    </bean>

dao层接口中的保存方法需要为其添加事务控制，在ApplicationContext配置spring的声明式事务管理

<!--配置spring的声明式事务管理-->
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>
    <!--配置AOP切入点-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.chenpeng.service.impl.*.*(..))"/>
    </aop:config>

posted @ 2020-04-14 16:59 codeDD 阅读(107) 评论(0) 编辑收藏举报

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