SSM综合练习

CRM练习

applicationContext-dao.xml（数据源和mabatis配置）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

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

    <!-- 配置 阿里Druid 数据源 连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
    </bean>

    <!-- 配置SqlSessionFactory -->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 设置MyBatis核心配置文件 -->
        <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
        <!-- 设置数据源 -->
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 配置Mapper扫描 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 设置Mapper扫描包 -->
        <property name="basePackage" value="com.itheima.crm.mapper" />
    </bean>

</beans>

SqlMapConfig.xml（配置别名，mapper.xml中使用）

<?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>

    <!-- 别名 -->
    <typeAliases>
        <package name="com.itheima.crm.pojo"/>
    </typeAliases>

</configuration>

jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/crm?characterEncoding=utf-8
jdbc.username=root
jdbc.password=root

log4j.properties

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

applicationContext-service.xml（扫描service）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    <!-- 配置Service扫描 -->
    <context:component-scan base-package="com.itheima.crm.service" />
</beans>

springmvc.xml（controller扫描，注解驱动，视图解析器）

<?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:p="http://www.springframework.org/schema/p"
    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-4.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <!-- 配置Controller扫描 -->
    <context:component-scan base-package="com.itheima.crm.controller" />

    <context:property-placeholder location="classpath:resource.properties" />

    <!-- 配置注解驱动 -->
    <mvc:annotation-driven />

    <!-- 对静态资源放行 -->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/js/" mapping="/js/**" />
    <mvc:resources location="/fonts/" mapping="/fonts/**" />
    <!-- 配置视图解析器 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 前缀 -->
        <property name="prefix" value="/WEB-INF/jsp/" />
        <!-- 后缀 -->
        <property name="suffix" value=".jsp" />
    </bean>
</beans>
    

web.xml(spring配置文件，spring监听器，过滤器解决post乱码，springmvc)

<?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">
  <display-name>crm32</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  
      <!-- 配置spring -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext-*.xml</param-value>
    </context-param>

    <!-- 配置监听器加载spring -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    
    <!-- 配置过滤器，解决post的乱码问题 -->
    <filter>
        <filter-name>encoding</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>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- 配置SpringMVC -->
    <servlet>
        <servlet-name>boot-crm</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/springmvc.xml</param-value>
        </init-param>
        <!-- 配置springmvc什么时候启动，参数必须为整数 -->
        <!-- 如果为0或者大于0，则springMVC随着容器启动而启动 -->
        <!-- 如果小于0，则在第一次请求进来的时候启动 -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>boot-crm</servlet-name>
        <!-- 所有的请求都进入springMVC  放行了jsp   但是其他静态资源需要手动配置  进行放行  不然 页面没有样式 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

---

需要用事务的时候，直接将@Transactional加到service的实现类上即可

口语“写死”，书面语称“硬编码问题”，通常用配置文件处理

按条件，分页查询客户信息

---