【SaaS-Export项目】SSM整合 Dao spring与Mybatis的整合 spring与service spring整合springmvc

Dao spring与Mybatis的整合

思路

配置文件一般有两种一个.properties,另一个是.xml
.properties的特点每一行就是一个键值对

export_dao
（1）properties/db.properties
（2）spring/applicationContext-dao.xml
（3）定义ICompanyDao
（4）定义ICompanyDao.xml
（5）测试

检查pom.xml

查看有没有spring与mybatis的整合包

<dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>${mybatis.spring.version}</version>
        </dependency>

properties/db.properties

创建properties文件夹 创建db.properties文件来存放四大信息
DriverManager：驱动
Conection 数据库连接
账户
密码

# key=value
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/saas-export?characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456

spring/applicationContext-dao.xml

创建spring文件夹 创建applicationContext-dao.xml文件

<?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"
       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">

    <!--读取db.properties文件-->
    <context:property-placeholder location="classpath:properties/db.properties"></context:property-placeholder>
    <!--1.配置数据源 拿到四大信息-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="url" value="${jdbc.url}"/>
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--2.配置Spring整合Mybatis *** 由Spring创建SqlSessionFactory对象  -->
    <!--2.1 配置SqlSessionFactoryBean-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--注入数据源-->
        <property name="dataSource" ref="dataSource"/>
        <!-- com.zx.domain.company.Company  简化成company-->
        <property name="typeAliasesPackage" value="com.zx.domain"/>
    </bean>

    <!--2.2 配置Dao接口所在包 动态代理 session.getMapper(Dao.class)-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--指定Dao接口所在包-->
        <property name="basePackage" value="com.zx.dao"/>
    </bean>


</beans>

ICompanyDao

package com.zx.dao.company;

import com.zx.domain.company.Company;

import java.util.List;

public interface ICompanyDao {
    
    
    List<Company> findAll();
}

ICompanyDao.xml

<?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" >
<!--namespace: 需要映射的Dao接口类型-->
<mapper namespace="com.zx.dao.company.ICompanyDao">
   <!-- 解决数据库表的字段名与类的变量名不一致-->
<resultMap id="companyMay" type="company">
    <id column="id" property="id"/>
    <result  column="expiration_date" property="expirationDate"/>
    <result  column="license_id" property="licenseId"/>
    <result  column="company_size" property="companySize"/>
</resultMap>
  <select id="findAll" resultMap="companyMay">
      select * from ss_company
  </select>
</mapper>

ICompanyDaoTest

spring与service

思路

（1）service依赖dao
（2）编写测试(编写业务逻辑,创建业务对象,调用对象方法,添加spring的单元测试,创建 spring/applicationContext-tx.xml)
（3）如何读取另一个工程的spring的配置

service依赖dao

<dependency>
            <artifactId>export_dao</artifactId>
            <groupId>com.wzx</groupId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

TestCompanyService

import com.zx.domain.company.Company;
import com.zx.service.company.impl.CompanyServiceImpl;
import com.zx.service.company.inter.ICompanyService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath*:spring/applicationContext-*.xml")
public class TestCompanyService {
    
    
    @Autowired
    ICompanyService iCompanyService;

    @Test
    public  void  test01(){
    
    
        /*创建业务对象,调用对象方法*/
        List<Company> list= iCompanyService.findAll();
        System.out.println("list="+list);
    }
}

applicationContext-tx.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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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">

    <!--扫描Service实现类-->
    <context:component-scan base-package="com.zx.service"/>


    <!--Spring声明式事务（底层就是AOP）： 三步曲-->

    <!--1.配置事务管理器：管理事务：DataSource.Connection.commit() rollback()方法  -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入数据源  Dao中配置了-->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--2.配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager" >
        <!--配置事务细节特征-->
        <tx:attributes>
            <!--查询方法，使用默认的隔离级别 及 SUPPORTS(支持事务,如果当前方法有事务就使用,没有也不会创建)传播行为-->
            <tx:method name="find*" isolation="DEFAULT" propagation="SUPPORTS"/>
            <tx:method name="query*" isolation="DEFAULT" propagation="SUPPORTS"/>
            <tx:method name="select*" isolation="DEFAULT" propagation="SUPPORTS"/>
            <tx:method name="get*" isolation="DEFAULT" propagation="SUPPORTS"/>
            <!--增删改方法，使用默认的隔离级别 及 REQUIRED(有使用,没有就开启)传播行为-->
            <tx:method name="*" isolation="DEFAULT" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--3.配置事务切面: 切面=通知+切入点-->
    <aop:config>
        <!--配置切入点-->
        <aop:pointcut id="pt" expression="execution(* com.zx.service.*.impl.*.*(..))"/>

        <!--切面=通知+切入点-->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>
    </aop:config>

</beans>

如何读取另一个模块的spring配置

@ContextConfiguration("classpath:spring/applicationContext-*.xml")*

classpath: 加载当前maven工程的resources目录下的配置文件
classpath*: 加载当前maven工程及其依赖工程的resources目录下的配置文
applicationContext-*.xml: 读取所有符合规则的文件

spring整合springmvc

思路

（1）log4j.properties
（2）web.xml
（3）springmvc.xm
(4)CompanyController(创建业务对象,调用业务方法)

log4j.properties

log4j.rootLogger=debug, stdout, logfile

log4j.category.org.springframework=info
#log4j.category.org.apache=INFO

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=c:\\log\\myweb.log
log4j.appender.logfile.MaxFileSize=1KB
log4j.appender.logfile.MaxBackupIndex=5
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

web.xml

<?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"
         version="2.5">

<!--1.spring监听器: 读取applicationContext.xml配置文件-->
<!--修改监听器读取配置路径-->
<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>

<!--2.字符编码过滤器-->
<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>

<!--3.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/springmvc.xml</param-value>
  </init-param>
  <!--项目启动的时候，创建DispatcherServlet-->
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>dispatcherServlet</servlet-name>
  <url-pattern>*.do</url-pattern>
</servlet-mapping>

</web-app>

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:mvc="http://www.springframework.org/schema/mvc"
       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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--1.扫描Controller所在包-->
    <context:component-scan base-package="com.wzx.web"/>

    <!--2.视图解析器-->
    <!-- success   查找文件 /WEB-INF/pages/success.jsp -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--2.1 前缀-->
        <property name="prefix" value="/WEB-INF/pages/"/>
        <!--2.2 后缀-->
        <property name="suffix" value=".jsp"/>
    </bean>

    <!--3.mvc注解驱动-->
    <!--3. 把转换器工厂放入到注解驱动，才会生效的 @RequestMapping @ResponseBody @RequestBody-->
    <mvc:annotation-driven />

</beans>

CompanyController

package com.zx.web.controller.company;

import com.zx.dao.company.ICompanyDao;
import com.zx.domain.company.Company;
import com.zx.service.company.inter.ICompanyService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import java.util.List;

@Controller
@RequestMapping("/company")
public class CompanyController {
    
    
       @Autowired
    ICompanyService iCompanyService;

       @RequestMapping(path = "/list.do",method = RequestMethod.GET)
       public  String list(Model model){
    
    
         List<Company> list= iCompanyService.findAll();
         model.addAttribute("list",list);
           return "list";
       }

}

运行结果