搭建环境

使用Spring（业务层）整合其他的框架SpringMVC（表现层）和MyBatis（持久层）

`Spring`框架

创建数据库表

CREATE DATABASE ssm;

USE ssm;

CREATE TABLE account(

	id INT PRIMARY KEY AUTO_INCREMENT,

	NAME VARCHAR(20),

	money DOUBLE

);

pom文件导入坐标

  <properties>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <maven.compiler.source>1.8</maven.compiler.source>

    <maven.compiler.target>1.8</maven.compiler.target>

    <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>

实体类Account

public class Account implements Serializable {

    private Integer id;

    private String name;

    private Double money;

}

AccountDao接口（Spring框架）

public interface AccountDao {

    //查询所有账户

    public List<Account> findAll();

    //保存账户信息

    public void saveAccount(Account account);

}

AccountService接口

public interface AccountService {

    //查询所有账户

    public List<Account> findAll();

    //保存账户信息

    public void saveAccount(Account account);

}

AccountServiceImpl实现类

@Service("accountService")

public class AccountServiceImpl implements AccountService {

    @Override

    public List<Account> findAll() {

        System.out.println("业务层，查询所有账户");

        return null;

    }

    @Override

    public void saveAccount(Account account) {

        System.out.println("业务层，保存账户信息");

    }

}

表现层AccountController

@Controller

@RequestMapping(value = "/account")

public class AccountController {

}

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">

    <!--开启注解扫描，希望处理service和dao，controller不需要spring框架去处理，它会有自己的方法-->

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

        <!--配置哪些注解不扫描-->

        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>

    </context:component-scan>

</beans>

`SpringMVC`框架搭建

web.xml

1. <web-app>

     <display-name>Archetype Created Web Application</display-name>

  <!--配置前端服务器-->

  <servlet>

    <servlet-name>dispatcherServlet</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <!--加载springmvc.xml配置文件-->

    <init-param>

      <param-name>contextConfigLocation</param-name>

      <param-value>classpath:springmvc.xml</param-value>

    </init-param>

    <!--启动服务器，创建servlet-->

    <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>

</web-app>

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">

    <!--开启注解扫描，只扫描Controller注解-->

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

        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>

    </context:component-scan>

    <!--配置的视图解析器对象-->

    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/pages/"/>

        <property name="suffix" value=".jsp"/>

    </bean>

    <!--过滤静态资源-->

    <mvc:resources mapping="/css/**" location="/css/"/>

    <mvc:resources mapping="/images/**" location="/images/"/>

    <mvc:resources mapping="/js/**" location="/js/"/>

    <!--开启SpringMVC注解的支持-->

    <mvc:annotation-driven/>

</beans>

AccountController

<?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">

    <!--开启注解扫描，只扫描Controller注解-->

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

        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>

    </context:component-scan>

    <!--配置的视图解析器对象-->

    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/pages/"/>

        <property name="suffix" value=".jsp"/>

    </bean>

    <!--过滤静态资源-->

    <mvc:resources mapping="/css/**" location="/css/"/>

    <mvc:resources mapping="/images/**" location="/images/"/>

    <mvc:resources mapping="/js/**" location="/js/"/>

    <!--开启SpringMVC注解的支持-->

    <mvc:annotation-driven/>

</beans>

index.jsp

    <a href="account/findAll">测试</a>

list.jsp
```
      <h3>查询所有账户</h3>
```

`Spring`整合`SpringMVC`框架

1web.xml

  <!--配置Spring的监听器，默认只加载WEB-INF目录下的applicationContext.xml配置文件-->

  <listener>

      <listener-class>org.springframework.web.context.ContextLoader</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>

2AccountController）（方法中自动注入service）

@Controller

@RequestMapping(value = "/account")

public class AccountController {

    //自动注入

    @Autowired

    private AccountService accountService;

    @RequestMapping("/findAll")

    public String findAll(){

        System.out.println("表现层：查询所有账户");

        //调用Service的方法

        accountService.findAll();

        return "list";

    }

}

`Spring`整合`MyBatis`框架

web.xml配置Sping监听器，在服务器启动时加载applicationContext.xml配置文件

  <!--配置Spring的监听器，默认只加载WEB-INF目录下的application.xml配置文件-->

  <listener>

      <listener-class>org.springframework.web.context.ContextLoader</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>

SqlMapConfig.xml配置数据库环境，引入映射类的地址

<?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"></transactionManager>

            <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="000519"/>

            </dataSource>

        </environment>

    </environments>

    <!--引入映射配置文件-->

    <mappers>

        <!--<mapper class="com.atgw.dao.AccountDao"/>-->

        <package name="com.atgw.dao"/>

    </mappers>

</configuration>

AccountDao接口，添加注释，写SQL语句

public interface AccountDao {

    //查询所有账户

    @Select("select * from account")

    public List<Account> findAll();

    //保存账户信息

    @Insert("insert into account(name,money) values(#{name},#{money})")

    public void saveAccount(Account account);

}

测试

//查询所有数据

@Test

    public void run1() throws Exception {

        //加载配置文件

        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");

        //创建SQLSessionFactory对象

        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);

        //创建SQLSession对象

        SqlSession session = factory.openSession();

        //获取代理对象

        AccountDao dao = session.getMapper(AccountDao.class);

        //查询所有数据

        List<Account> list = dao.findAll();

        for (Account account : list){

            System.out.println(account);

        }

        //关闭资源

        session.close();

        in.close();

    }

    //保存数据

    @Test

    public void run2() throws Exception {

        //加载配置文件

        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");

        //创建SQLSessionFactory对象

        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);

        //创建SQLSession对象

        SqlSession session = factory.openSession();

        //获取代理对象

        AccountDao dao = session.getMapper(AccountDao.class);

        Account account = new Account();

        account.setName("司司");

        account.setMoney(199.0);

        dao.saveAccount(account);

        //提交事务（默认是手动提交事务的）

        session.commit();

        //关闭资源

        session.close();

        in.close();

    }

希望把dao对象代理到IOC容器中

SQLSessionFactory工厂可以创建SQLSession，然后创建dao代理对象，代理到IOC容器中

    <!--Spring整合MyBatis框架-->

    <!--配置连接池-->

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="driverClass" value="com.mysql.jdbc.Driver"/>

        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssm"/>

        <property name="user" value="root"/>

        <property name="password" value="000519"/>

    </bean>

    <!--配置SQLSessionFactory工厂-->

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

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

    </bean>

    <!--配置AccountDao接口所在的包-->

    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <property name="basePackage" value="com.atgw.dao"/>

    </bean>

AccountDao接口中添加@Repository注解

@Repository//交给IOC容器

public interface AccountDao {

}

AccountController中的方法中对遍历到数据的进行页面遍历

    @RequestMapping("/findAll")

    public String findAll(Model model){

        System.out.println("表现层：查询所有账户");

        //调用Service的方法

        List<Account> list = accountService.findAll();

        model.addAttribute("list",list);

        return "list";

    }

list.jsp页面（遍历数据）

<%@ 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>

    <h3>查询所有账户</h3>

    <c:forEach items="${list}" var="account">

        ${account.name}<br/>

    </c:forEach>

</body>

</html>

配置事务

applicationContext.xml

    <!--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 name="*" isolation="DEFAULT"/>

        </tx:attributes>

    </tx:advice>

    <!--配置AOP增强-->

    <aop:config>

        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.atgw.service.impl.*ServiceImpl.*(..))"/>

    </aop:config>

AccountController

    @RequestMapping("/save")

    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {

        accountService.saveAccount(account);

       //重定向

        response.sendRedirect(request.getContextPath()+"/account/findAll");

        return;

    }

index.jsp

    <form action="account/save" method="post">

        姓名：<input type="text" name="name" /><br/>

        金额：<input type="text" name="money" /><br/>

        <input type="submit" value="保存"/><br/>

    </form>

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编程基础 1-1 常用数据结构数组.链表.堆.栈.队列.Hash表.二叉树等1-2 算法思想算法时间复杂度和空间复杂度的分析计算 1-2 算法思想:递推.递归.穷举.贪心.分治.动态规划.迭代.分 ...

SSM框架整合（Spring + SpringMVC + MyBatis）

搭建环境

Spring框架

SpringMVC框架搭建

Spring整合SpringMVC框架