整合SSM框架

配置SSM框架的步骤:

1.导入依赖
2.编写实体类entity
3.编写实体类对应的mapper接口、服务层、控制层
4.编写Spring框架配置文件:applicationContext.xml
5.Spring整合SpringMVC框架:
webapp\web.xml
springmvc.xml
6.Spring整合Mybatis框架：Mybatis-config.xml

SSM框架目录结构：

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

    <!-- 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>5.0.2.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.0.2.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>5.0.2.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.0.2.RELEASE</version>
    </dependency>
    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>5.0.2.RELEASE</version>
    </dependency>
    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>5.0.2.RELEASE</version>
    </dependency>
    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.0.2.RELEASE</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>5.1.47</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>1.2.12</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.33</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.33</version>
    </dependency>
    <!-- log end -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.4</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.5.2</version>
    </dependency>

</dependencies>

2.编写实体类

import org.springframework.stereotype.Component;

import java.io.Serializable;

@Component
public class Account implements Serializable {
    private Integer id;
    private String user_name;
    private Double money;

    public Account() {
    }

    public Account(Integer id, String user_name, Double money) {
        this.id = id;
        this.user_name = user_name;
        this.money = money;
    }

    public Integer getId() {
        return id;
    }

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

    public String getUser_name() {
        return user_name;
    }

    public void setUser_name(String user_name) {
        this.user_name = user_name;
    }

    public Double getMoney() {
        return money;
    }

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

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

3.编写对应的mapper

import com.PQK.entity.Account;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface Accountmapper {

    /**
     * 查询所有用户的信息
     * @return
     */
    @Select("select * from account")
    public List<Account> findAll();

    /**
     * 插入一条用户信息
     * @param account
     */
    @Select("insert into account (id,user_name,money) values (#{id},#{user_name},#{money})")
    public  void saveAccount(Account account);

    /**
     * 删除一个用户
     * @param id
     */
    @Delete("delete from account where id = #{id}")
    public int deleAccountById(Integer id);

    /**
     * 更新账户
     * @param account
     * @return
     */
    @Update("update account set user_name = #{user_name},money=#{money} where id = #{id}")
    public int updateAccountById(Account account);

}

服务层（service）

import com.PQK.entity.Account;

import java.util.List;

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

    /**
     * 插入一条用户信息
     * @param account
     */
    public void saveAccount(Account account);
}

import com.PQK.mapper.Accountmapper;
import com.PQK.entity.Account;
import com.PQK.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

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

    @Autowired
    private Accountmapper accountmapper;

    @Override
    public List<Account> findAll() {
        System.out.println("查询成功");
       return accountmapper.findAll();
    }

    @Override
    public void saveAccount(Account account) {
        System.out.println("保存成功");
        accountmapper.saveAccount(account);

    }
}

控制层：

import com.PQK.entity.Account;
import com.PQK.service.Impl.AccountServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    private AccountServiceImpl accountService;

    @GetMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层查询所有信息！");
        //调用Service方法
        List<Account> all = accountService.findAll();
        for (Account account : all) {
            System.out.println(account);
        }
        model.addAttribute("all",all);
        return "success";
    }

    @PostMapping("/save")
    public String save(Account account){
        accountService.saveAccount(account);
        return "success";
    }

    @GetMapping("/index")
    public String Toindex(){
        return "index";
    }


}

4.编写Spring框架配置文件: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">


    <!--声明使用注解配置-->
    <context:annotation-config></context:annotation-config>

    <!--声明Spring工厂注解的扫描范围-->
    <context:component-scan base-package="com.PQK">

        <!--配置哪些注解不扫描，进行忽略-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--加载propeties文件-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>

    <!--Spring整合Mybatis数据库-->
    <!--配置数据库连接  Druid连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
        <property name="user" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!--配置SqlSessionFactory工厂-->
    <bean id="sqlSessionFactroy" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--    配置Accountmapper接口所在的包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.PQK.mapper"></property>
    </bean>

    <!--    配置Spring框架声明式事务管理-->
    <!--    配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </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>
            <tx:method name="*" isolation="DEFAULT"></tx:method>
        </tx:attributes>
    </tx:advice>
    <!--    配置AOP增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(public * com.PQK.service..ServiceImpl.*(..))"/>
    </aop:config>
    <aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>

    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>

5.Spring整合SpringMVC框架:

webapp\web.xml
springmvc.xml

web.xml要放在webapp中，webapp要放在和resource同级的目录下

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<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_4_0.xsd"
         version="4.0">


    <!--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>
        <!--Servlet启动时刻-->
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--    解决中文乱码的过滤器-->
    <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>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!--配置监听Spring的监听器，applicationContext的默认的路径是”/WEB-INF/applicationContext.xml。也可以在web.xml中配置该文件的其他位置-->
    <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>
    
    <welcome-file-list>
        <welcome-file>/WEB-INF/pages/index.jsp</welcome-file>
    </welcome-file-list>


</web-app>

springmvc.xml

<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:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.2.xsd">



<!--开启springMVC注解的支持-->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--按照单一职责原则，我们springmvc负责的是我们的controller,所以我们需要扫描controller-->
    <context:component-scan base-package="com.PQK.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>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!--开发静态资源访问权限-->
    <mvc:default-servlet-handler></mvc:default-servlet-handler>

</beans>

6.Spring整合Mybatis框架：Mybatis-config.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>

    <properties resource="jdbc.properties"/>
    <!--设置MyBatis的全局配置-->
    <settings>
        <!--将_自动映射为驼峰，emp_name:empName-->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <!--开启延迟加载-->
        <setting name="lazyLoadingEnabled" value="true"/>
    </settings>
    <!--<typeAliases>
        <package name="com.chinasofti.entity"/>
    </typeAliases>-->

    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="${jdbc.driver}"/>
                <property name="url" value="${jdbc.url}"/>
                <property name="username" value="${jdbc.username}"/>
                <property name="password" value="${jdbc.password}"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
        <package name="com.PQK.mapper"/>
    </mappers>
</configuration>