ssm项目集成步骤

其他 2018-12-18 20:01:20 阅读次数: 0

第一步：整合dao层
mybatis 和 spring ，通过 spring 管理 mapper 接口。
使用 mapper 的扫描器自动扫描 mapper 接口 在spring中进行注册。

MConfig.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>

    <!--全局setting配置，根据需要添加-->
    <settings>
   <!--     <setting name="logImpl" value="LOG4J"/>-->
        <setting name="logImpl" value="LOG4J"/>

        <!--设置延迟加载-->
        <!--<setting name="lazyLoadingEnabled" value="true"/>-->
        <!--<setting name="aggressiveLazyLoading" value="false"/>-->

       <!--设置二级缓存-->
        <setting name="cacheEnabled" value="true"/>
    </settings>

    <!--配置别名 -->
    <typeAliases>
        <!--批量扫描-->
        <package name="com.demo.ssm.po"/>
    </typeAliases>

    <!--加载映射文件-->
    <mappers>
        <!--<mapper resource="sqlmap/user.xml"/>-->
        <!--加载单个映射文件 resource从类路径开  url跟路径-->
        <!--spring 整合后，使用mapper扫描器,不需要配置-->
<!--        <mapper resource="mapper/User.xml"/> -->

        <package name="com.demo.ssm.mapper"/>

    </mappers>
</configuration>

applicationContext-dao.xml

配置数据源
配置sqlSessionFactory
配置mapper扫描器

<?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:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"
     >

    <!--加载配置文件-->
    <context:property-placeholder location="db.properties"/>


    <!--配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!-- 指定连接数据库的驱动-->
        <property name="driverClass" value="${jdbc.driver}"/>
        <!-- 指定连接数据库的URL-->
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <!-- 指定连接数据库的用户名-->
        <property name="user" value="${jdbc.username}"/>
        <!-- 指定连接数据库的密码-->
        <property name="password" value="${jdbc.password}"/>
    </bean>

<!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--加载mybatis的配置文件-->
        <property name="configLocation" value="mybatis/MConfig.xml" />
        <property name="dataSource" ref="dataSource"/>
    </bean>


    <!--mapper 配置
        根据mapper接口生产mapper对象
    -->
    <!--此方法需要针对每一个mapper配置，麻烦。-->
    <!--<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">-->
        <!--&lt;!&ndash;mapperInterface 指定mapper接口&ndash;&gt;-->
        <!--<property name="mapperInterface" value="com.demo.mybatis.mapper.UserMapper"/>-->
        <!--<property name="sqlSessionFactory" ref="sqlSessionFactory"/>-->
    <!--</bean>-->

    <!--mapper批量扫描,从mapper包中扫描出mapper接口，自动创建代理对象并且在spring容器中注册-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--指定扫描的包名-->
        <!--使用扫描需要遵循一下规范:
            mapper.xml与mapper.java文件名称一致，并在同个目录下
        -->
        <!--自动扫描出来的mapper的bean的id为mapper的类名(首字母小写)-->
        <!--如果要扫描多个包，用半角逗号分隔包名-->
        <property name="basePackage" value="com.demo.ssm.mapper"/>

        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>
</beans>

逆向工程生产po类mapper（单表CRUD）
mybatis-generator.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <context id="testDb">
        <!--数据库连接的信息:驱动类，连接地址，用户名，密码-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/mdb" userId="root" password="root"></jdbcConnection>
<!--
        <jdbcConnection driverClass="oracle" connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:mdb" userId="root" password="root"></jdbcConnection>
-->
        <!--生成po类的位置-->
        <javaModelGenerator targetPackage="com.demo.ssm.po" targetProject=".\src\main\java"></javaModelGenerator>


        <!--mapper文件位置-->
        <sqlMapGenerator targetPackage="com.demo.ssm.mapper" targetProject=".\src\main\java"></sqlMapGenerator>

        <!--mapper接口位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.demo.ssm.mapper" targetProject=".\src\main\java"></javaClientGenerator>


        <!--指定数据库表-->
        <table tableName="item"></table>
        <table tableName="user"></table>
        <table tableName="orderdetail"></table>
        <table tableName="orders"></table>

    </context>
</generatorConfiguration>

Generator.java

public class Generator {
    public void generator() throws IOException, XMLParserException, InvalidConfigurationException, SQLException, InterruptedException {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("src/main/resources/generator/generatorConfig.xml");
        ConfigurationParser parser = new ConfigurationParser(warnings);
        Configuration configuration = parser.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(configuration,callback,warnings);
        myBatisGenerator.generate(null);
    }

    public static void main(String[] args) throws InterruptedException, SQLException, InvalidConfigurationException, XMLParserException, IOException {
        Generator generator = new Generator();

        generator.generator();
    }
}

第二步：整合service层
通过 spring 管理 service 接口。
使用配置方式将 service 接口配置在 spring 配置文件中。
实现事务控制

定义service接口

public interface ItemsService {
    //商品查询列表
    List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo);
}

实现service接口

public class ItemsServiceImpl implements ItemsService {
    @Autowired
    private ItemsMapperCustom itemsMapperCustom;

    public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) {

        return itemsMapperCustom.findItemsList(itemsQueryVo);
    }
}

service配置
applicationContext-service

<?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:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"
>

    <!--定义商品的service-->
    <bean class="com.demo.ssm.service.impl.ItemsServiceImpl">
    </bean>
</beans>

service事务声明
applicationContext-tranaction.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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"
>

    <!--事务管理器-->
    <!--对mybatis操作数据库事务控制，是spring使用jdbc的事务控制类-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--数据源
            dataSource在applicationContext-dao.xml中配置
        -->
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="save*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="insert" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="sel*" propagation="SUPPORTS" read-only="true"/>
        </tx:attributes>
    </tx:advice>

    <!--aop-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.demo.ssm.service.impl.*.*(..))"/>
    </aop:config>
</beans>

第三步：整合springmvc
由于 springmvc 是 spring 的模块 ， 不需要整合。
创建 springmcv.xml，配置处理器映射器，适配器，视图解析器
springmvc.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:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"
>

    <!--对于注解的handler 可以单个配置
        实际开发中建议使用组件扫描
    -->
    <!--   <bean class="com.demo.ssm.controller.ItemsController3"></bean>-->

    <!--可以扫描 controller service-->
    <context:component-scan base-package="com.demo.ssm.controller"></context:component-scan>

    <!--处理器适配器
        多个映射器可以并存

        所有的处理器适配器都实现HandlerAdapter
    -->


    <!--注解映射器-->
    <!--spring 3.1之前 使用 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping 注解映射器-->
    <!--spring 3.1 之后 使用 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping 注解映射器-->

    <!--<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>-->

    <!--适配器-->
    <!--spring 3.1 之前 使用 org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter 注解适配器-->
    <!--spring 3.1 之后 使用 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter 注解适配器-->

    <!--<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean>-->


    <!--使用 mvc：annotation-drien 可以代替上面注解映射器和注解适配器的配置
        mvc:annotation-driven 默认加载了很多绑定方法 推荐使用
    -->
    <mvc:annotation-driven></mvc:annotation-driven>


    <!--试图解析器-->
    <!--解析jsp视图，默认使用jstl标签，classpath需要jatl包-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

配置前端控制器
web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <!--加载spring容器-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext-*.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--通过contextConfigLocation配置springmvc加载配置文件（配置处理映射器，适配器）
        如果不配置，默认加载/WEB_INF/servlet名称-servlet.xml(srpingmvc-servlet.xml)
    -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
  </servlet>


  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <!--
        第一种： *.action 访问以.action结尾由DispatcherServlet进行解析
        第二种： /         所有访问的地址都由DispatcherServlet进行解析，对静态文件的解析需要配置，
        使用此方法可以实现restful风格url
        第三种： /*        错误配置方法，转发jsp页面仍由DispatcherServlet解析
    -->
    <url-pattern>*.action</url-pattern>
  </servlet-mapping>

</web-app>

编写Controller（handler）
ItemsController.java

@Controller
public class ItemsController {
    @Autowired
    private ItemsService  itemsService;


    //商品查询列表
    @RequestMapping("/queryItems")
    public ModelAndView queryItems(){
        List<ItemsCustom> list = itemsService.findItemsList(null);

        ;

        //返回modelAndView
        ModelAndView modelAndView = new ModelAndView();

        //相当于request的setAttr,在jsp通过itemlist获取数据
        modelAndView.addObject("itemsList",list);

        //指定试图
        //试图解析器中配置了前缀和后缀
//        modelAndView.setViewName("WEB-INF/jsp/itemsList.jsp");
        modelAndView.setViewName("itemsList");

        return modelAndView;

编写jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@page isELIgnored="false" pageEncoding="UTF-8" %>
<%--
  Created by IntelliJ IDEA.
  User: v7
  Date: 2016/8/13
  Time: 12:18
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>ItemsList</title>
</head>
<body>
    <from action="${pageContext.request.contextPath }/item/queryItem.action" method="post">
        查询条件：
        <table width="100%" border="1">
            <tr>
                <td><input type="submit" value="查询"/></td>
            </tr>
        </table>
        商品列表：
        <table width="100%" border="1">
            <tr>
                <th>商品名称</th>
                <th>商品价格</th>
                <th>生产日期</th>
                <th>商品描述</th>
                <th>操作</th>
            </tr>
            <c:forEach items="${itemsList}" var="item">
                <tr>
                    <td>${item.name}</td>
                    <td>${item.price}</td>
                    <td>${item.createTime}</td>
                    <td>${item.detail}</td>
                    <td><a href="${pageContext.request.contextPath}/item/editItem.action?id=${item.id}">修改</a></td>
                </tr>

            </c:forEach>
        </table>
    </from>
</body>
</html>

加载spring容器
将mapper,service,controller加载到spring中

建议使用通配符方法加载spring文件.
在web.xml中，添加spring容器

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext-*.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

所需要的jar包：
数据库驱动包：mysql-5.1
mybatis 的jar包
mybatis 和 spring 整合包
log4j 包
数据库连接池包 c3p0
spring 所以jar包
jstl包

maven pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.demo</groupId>
  <artifactId>ssm</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>ssm Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>


    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.2.8</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/junit/junit -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>


    <!-- 添加Spring-core包 -->
             <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-core</artifactId>
                 <version>4.3.2.RELEASE</version>
             </dependency>
             <!-- 添加spring-context包 -->
             <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-context</artifactId>
                 <version>4.3.2.RELEASE</version>
             </dependency>
             <!-- 添加spring-tx包 -->
             <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-tx</artifactId>
                 <version>4.3.2.RELEASE</version>
             </dependency>
             <!-- 添加spring-jdbc包 -->
             <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-jdbc</artifactId>
                 <version>4.3.2.RELEASE</version>
             </dependency>
             <!-- 为了方便进行单元测试，添加spring-test包 -->
             <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-test</artifactId>
                 <version>4.3.2.RELEASE</version>
             </dependency>
             <!--添加spring-web包 -->
             <dependency>
                 <groupId>org.springframework</groupId>
                 <artifactId>spring-web</artifactId>
                 <version>4.3.2.RELEASE</version>
             </dependency>
             <!--添加aspectjweaver包 -->
             <dependency>
                 <groupId>org.aspectj</groupId>
                 <artifactId>aspectjweaver</artifactId>
                 <version>1.8.5</version>
             </dependency>

    <!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>


    <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.2</version>
    </dependency>

      <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
      <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
      </dependency>



  </dependencies>


  <build>
    <finalName>ssm</finalName>

    <plugins>
      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration>
          <verbose>true</verbose>
          <overwrite>true</overwrite>
        </configuration>
      </plugin>

    </plugins>

    <resources>
      <resource>
        <directory>
          src/main/resources
        </directory>
      </resource>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>
  </build>
</project>

db.properties

jdbc.driver = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/mdb?charaterEncoding='UTF-8'&useSSL=true
jdbc.username = root
jdbc.password = root

log4j.properties

# Global logging configuration
#在开发环境下级别设置成DEBUG,生成环境设置成info或error
log4j.rootLogger = debug,stdout
# MyBatis logging configuration...
log4j.logger.test=TRACE

### 输出信息到控制抬 ###
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=%5p [%t] - %m%n

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