SSM框架整合

1.1 准备工作

1.原始方式整合

CREATE DATABASE ssm;
CREATE TABLE account(
	id int PRIMARY KEY auto_increment,
	name VARCHAR(100),
	money DOUBLE(7,2)
)

2.创建Maven工程

3.导入Maven坐标

  <dependencies>
    <!--与spring相关-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.3.25</version>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.4</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.3.25</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.3.25</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.3.25</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.3.25</version>
    </dependency>

    <!--servlet和jsp-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>

    <!--与Mybatis相关-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.32</version>
    </dependency>
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.5</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
  </dependencies>

4.编写实体类

在domain包下创建Account实体类

private Integer id;
private String name;
private Double money;

5.编写Mapper接口

在mapper包下创建AccountMapper接口

public interface AccountMapper {
    public void save(Account account);
    public List<Account> findAll();
}

6.编写Service接口

在service包下创建AccountService接口

public interface AccountService {
    public void save(Account account);
    public List<Account> findAll();
}

7.编写Service接口实现类

然后在内部impl包下创建AccountServiceImpl类实现AccountService接口的方法

@Service("accountService")
public class AccountServiceImpl implements AccountService {
    @Override
    public void save(Account account) {
        try {
            InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
            SqlSession sqlSession = sqlSessionFactory.openSession();
            AccountMapper mapper = sqlSession.getMapper(AccountMapper.class);
            mapper.save(account);
            sqlSession.commit();
            sqlSession.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public List<Account> findAll() {
        try {
            InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
            SqlSession sqlSession = sqlSessionFactory.openSession();
            AccountMapper mapper = sqlSession.getMapper(AccountMapper.class);
            List<Account> accountList = mapper.findAll();
            sqlSession.close();
            return accountList;
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

8.创建控制器

在controller包下创建AccountController控制器页面

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

    @Autowired
    public void setAccountService(AccountService accountService){
        this.accountService = accountService;
    }

    //保存
    @RequestMapping(value = "/save",method = RequestMethod.POST,produces = "text/html;charset=UTF-8")
    @ResponseBody
    public String save(Account account){
        accountService.save(account);
        return "保存成功！";
    }
    //查询
    @RequestMapping("/GetAll")
    public ModelAndView GetAll(){
        List<Account> accountList = accountService.findAll();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("accountList",accountList);
        modelAndView.setViewName("accountList");
        return modelAndView;
    }
}

在webapp文件夹下创建save.jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
  <h1>添加账户信息表单</h1>
  <form name="accountForm" action="${pageContext.request.contextPath}/account/save" method="post">
    账户名称：<input type="text" name="name"><br>
    账户金额：<input type="text" name="money"><br>
    <input type="submit" value="保存"><br>
  </form>
</body>
</html>

10.编写列表页面

在WEB-INF下创建pages文件夹，在该文件夹下创建accountList.jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>展示账户数据列表</h1>
    <table>
        <tr>
            <th>账户id</th>
            <th>账户名称</th>
            <th>账户金额</th>
        </tr>
        <c:forEach items="${accountList}" var="account">
            <tr>
                <td>${account.id}</td>
                <td>${account.name}</td>
                <td>${account.money}</td>
            </tr>
        </c:forEach>
    </table>
</body>
</html>

11.编写相应的配置文件

• Spring配置文件：applicationContext.xml

  <beans xmlns="http://www.springframework.org/schema/beans"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:aop="http://www.springframework.org/schema/aop"
         xmlns:tx="http://www.springframework.org/schema/tx"
         xmlns:context="http://www.springframework.org/schema/context"
         xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
  
      <!--组件扫描 扫描service和mapper-->
      <context:component-scan base-package="com.zy">
          <!--排除controller的扫描-->
          <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
      </context:component-scan>
  </beans>
  

• SpringMvc配置文件：spring-mvc.xml

  <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">
  
      <!--包扫描，主要扫描controller-->
      <context:component-scan base-package="com.zy.controller"></context:component-scan>
      <!--配置mvc注解驱动-->
      <mvc:annotation-driven></mvc:annotation-driven>
      <!--内部资源视图解析器-->
      <bean id="resourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
          <property name="prefix" value="/WEB-INF/pages/"></property>
          <property name="suffix" value=".jsp"></property>
      </bean>
      <!--开放静态资源访问权限-->
      <mvc:default-servlet-handler/>
  </beans>
  

• Mybatis映射文件：AccountMapper.xml

  <?xml version="1.0" encoding="UTF-8" ?>
  <!DOCTYPE mapper
          PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
          "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
  <mapper namespace="com.zy.mapper.AccountMapper">
      <insert id="save" parameterType="account">
          insert into account values(#{id},#{name},#{money})
      </insert>
      <select id="findAll" resultType="account">
          select * from account
      </select>
  </mapper>
  

• 数据库连接信息文件：jdbc.properties

  jdbc.driver = com.mysql.jdbc.Driver
  jdbc.url = jdbc:mysql://101.43.25.210/ssm
  jdbc.username=root
  jdbc.password=zyplj1314999
  

• Web.xml文件：web.xml

  <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns="http://java.sun.com/xml/ns/javaee"
           xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
           id="WebApp_ID" version="2.5">
    <!--配置spring监听器-->
    <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>
  
    <!--springmvc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:spring-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>
  
    <!--乱码过滤器-->
    <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>
    </filter>
    <filter-mapping>
      <filter-name>CharacterEncodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
    </filter-mapping>
  </web-app>
  

• 日志文件：log4j.xml

  ### direct log messages to stdout ###
  log4j.appender.stdout=org.apache.log4j.ConsoleAppender
  log4j.appender.stdout.Target=System.out
  log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
  log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
  
  ### direct messages to file mylog.log ###
  log4j.appender.file=org.apache.log4j.FileAppender
  log4j.appender.file.File=c:/mylog.log
  log4j.appender.file.layout=org.apache.log4j.PatternLayout
  log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
  
  ### set log levels - for more verbose logging change 'info' to 'debug' ###
  
  log4j.rootLogger=debug, stdout
  
  

1.2 Spring整合Mybatis

1.整合思路

2.将SqlSessionFactory配置到Spring容器中

sqlMapConfig-spring.xml只保留

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <!--定义别名-->
    <typeAliases>
        <package name="com.zy.domain"/>
    </typeAliases>
    
</configuration>

修改applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!--组件扫描 扫描service和mapper-->
    <context:component-scan base-package="com.zy">
        <!--排除controller的扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--加载properties文件-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
    <!--配置数据源-->
    <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sessionFactory-->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!--加载mybatis核心文件-->
        <property name="configLocation" value="classpath:sqlMapConfig-spring.xml"></property>
    </bean>

    <!--扫描mapper所在的包，加载映射-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.zy.mapper"></property>
    </bean>
</beans>

修改控制器

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

    private AccountMapper accountMapper;
    @Autowired
    public void setAccountMapper(AccountMapper accountMapper){
        this.accountMapper = accountMapper;
    }
    @Override
    public void save(Account account) {
        accountMapper.save(account);
    }

    @Override
    public List<Account> findAll() {
        return  accountMapper.findAll();
    }
}