18SSM资源整合

SSM原始方式

在数据库db1中创建表

use db1;
create table account(
id int primary key auto_increment,
name varchar(100),
money double
);
select * from account;

创建maven工程，导入坐标

		<dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!--      servlet-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <!--      jsp-->
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>
        <!--    spring核心-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <!--      aop编程-->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.7</version>
        </dependency>
        <!--      jdbcTemplate-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <!--      事务-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <!--      spring集成测试-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <!--      spring-mvc-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <!--      mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <!--      mybatsi整合spring-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
        <!--      mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
        <!--      连接池-->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>
        <!--      jsp中用到的jstl-->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

导入tomcat插件

				<plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
                    <artifactId>tomcat7-maven-plugin</artifactId>
                    <version>2.2</version>
                    <configuration>
                        <port>8080</port>
                        <uriEncoding>UTF-8</uriEncoding>
                    </configuration>
                </plugin>

编写domain类

编写mapper接口

public interface AccountMapper {

    public void save(Account account);

    public List<Account> findAll();
}

定义service接口

public interface AccountService {
    public void save(Account account);

    public List<Account> findAll();
}

定义controller类

public class AccountController {
    // 保存
    public String save(Account account) {
        return null;
    }

    // 查询全部
    public ModelAndView findAll() {
        return null;
    }
}

编写jsp页面 save.jsp

<h1>添加账号信息表单</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="提交"> <br>
</form>

导入jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/db1
jdbc.username=root
jdbc.password=root

导入log4j.properties

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
log4j.rootLogger=all, stdout

编写com.mapper.AccountMapper.xml映射文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.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>

编写sqlMapConfig.xml核心配置文件

<?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>
<!--    加载properties-->
    <properties resource="jdbc.properties"/>

<!--    定义别名-->
    <typeAliases>
<!--        <typeAlias type="com.domain.Account" alias="account"/>-->
        <package name="com.domain"/>
    </typeAliases>

<!--    环境-->
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"></transactionManager>
            <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>

<!--    加载映射-->
    <mappers>
<!--        <mapper resource="commapperAccountMapper.xml"/>-->
        <package name="com.mapper"/>
    </mappers>

<!--    配置Mybatis的SqlSession-->
</configuration>

编写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: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 service和mapper-->
    <context:component-scan base-package="com">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

</beans>

编写spring-mvc.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">

<!--    组件扫描 controller-->
    <context:component-scan base-package="com.controller"/>

<!--    mvc注解驱动：底层数据转换-->
    <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 name="suffix" value=".jsp"/>
    </bean>

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

</beans>

编写web.xml （注意：把文件中原来的头信息换了）

<?xml version="1.0" encoding="UTF-8"?>
<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">

  <servlet>
    <servlet-name>helloServlet</servlet-name>
    <servlet-class>com.servlet.HelloServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>helloServlet</servlet-name>
    <url-pattern>/hello</url-pattern>
  </servlet-mapping>

<!--  spring监听器: 随时得到applicationContext对象-->
  <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：让所有资源经过这里-->
  <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>

编写AccountService接口的实现类AccountServiceImpl.java

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

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

编写AccountController.java

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

    @Autowired
    private AccountService accountService;

    // 保存
    @RequestMapping(value = "/save", produces = "text/html;charset=UTF-8")
    @ResponseBody
    public String save(Account account) {
        accountService.save(account);
        return "保存成功";
    }

    // 查询
    @RequestMapping("findAll")
    public ModelAndView findAll() {
        List<Account> all = accountService.findAll();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("accountList", all);
        modelAndView.setViewName("accountList");
        return modelAndView;
    }
}

启动tomcat7:run

在浏览器中访问：xxxxx/account/save.jsp