Spring MVC、Spring、MyBatis、Maven整合开发

  本项目是我和朋友业余时间一起练手的博客项目，采用当前流行的SSM框架开发，其中还用到了Page Helper插件来分页，MyBatis-Generator来自动生成dao层和mapper等文件。

  项目采用IDEA 2017.1开发。

项目的包结构：



spring MVC的配置文件：springmvc-cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> 
<!-- 注解方式配置，非xml -->
<mvc:annotation-driven/>

<!-- 包自动扫描 -->
<context:component-scan base-package="org.blog"/>

<!-- 启动依赖注入的注解解析器-->
<context:annotation-config/>

<!--允许访问的静态资源-->
<mvc:resources location="/bootstrap/" mapping="/bootstrap/**"/>
<mvc:resources location="/img/" mapping="/img/**"/>
<mvc:resources location="/css/" mapping="/css/**"/>
<mvc:resources location="/js/" mapping="/js/**"/>

<!-- 配置SpringMVC的视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>

</beans>

Spring与MyBatis整合的配置文件：spring-mybatis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> 
<!-- 注解方式配置，非xml -->
<mvc:annotation-driven />

<!-- 启动依赖注入的注解解析器 -->
<context:annotation-config />

<!-- 包自动扫描 -->
<context:component-scan base-package="org.blog" />

<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}"/>
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}"/>
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}"/>
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}"/>
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}"/>
</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath*:mapper/*.xml"/>
<property name="configLocation" value="classpath:mybatis-config.xml" />
</bean>

<!-- DAO接口所在包名，Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="org.blog.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>

<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>

</beans>

由于本项目还采用了Page Helper插件，它的配置在MyBatis的配置文件mybatis-cfg.xml中

<?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>
<!--
plugins在配置文件中的位置必须符合要求，否则会报错，顺序如下:
properties?, settings?,
typeAliases?, typeHandlers?,
objectFactory?,objectWrapperFactory?,
plugins?,
environments?, databaseIdProvider?, mappers?
-->
<plugins>
<!-- com.github.pagehelper为PageHelper类所在包名 -->
<plugin interceptor="com.github.pagehelper.PageHelper">
<property name="dialect" value="mysql"/>
<!-- 该参数默认为false -->
<!-- 设置为true时，会将RowBounds第一个参数offset当成pageNum页码使用 -->
<!-- 和startPage中的pageNum效果一样-->
<property name="offsetAsPageNum" value="true"/>
<!-- 该参数默认为false -->
<!-- 设置为true时，使用RowBounds分页会进行count查询 -->
<property name="rowBoundsWithCount" value="true"/>
<!-- 设置为true时，如果pageSize=0或者RowBounds.limit = 0就会查询出全部的结果 -->
<!-- （相当于没有执行分页查询，但是返回结果仍然是Page类型）-->
<property name="pageSizeZero" value="true"/>
<!-- 3.3.0版本可用 - 分页参数合理化，默认false禁用 -->
<!-- 启用合理化时，如果pageNum<1会查询第一页，如果pageNum>pages会查询最后一页 -->
<!-- 禁用合理化时，如果pageNum<1或pageNum>pages会返回空数据 -->
<property name="reasonable" value="false"/>
<!-- 3.5.0版本可用 - 为了支持startPage(Object params)方法 -->
<!-- 增加了一个`params`参数来配置参数映射，用于从Map或ServletRequest中取值 -->
<!-- 可以配置pageNum,pageSize,count,pageSizeZero,reasonable,不配置映射的用默认值 -->
<!-- 不理解该含义的前提下，不要随便复制该配置 -->
<property name="params" value="pageNum=start;pageSize=limit;"/>
</plugin>
</plugins>
</configuration>

MyBatis-Generator的配置文件

<?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>

<classPathEntry location="E:\\mysql-connector-java-5.1.34-bin.jar" />
<context id="mybatis_gen">
<jdbcConnection connectionURL="jdbc:mysql://localhost:3306/blog"
driverClass="com.mysql.jdbc.Driver" userId="root" password="1234" />

<javaModelGenerator targetPackage="org.blog.pojo"
targetProject="E:\Blog\src\main\java">
<property name="enableSubPackages" value="true" />
<property name="constructorBased" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>

<sqlMapGenerator targetPackage="mapper"
targetProject="E:\Blog\src\main\resources" />

<javaClientGenerator targetPackage="org.blog.dao"
targetProject="E:\Blog\src\main\java" type="XMLMAPPER">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>

<table tableName="user" domainObjectName="User"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>

<table tableName="article" domainObjectName="Article"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>

<table tableName="comment" domainObjectName="Comment"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>

<table tableName="resource" domainObjectName="Resource"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>

<table tableName="message" domainObjectName="Message"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true">
</table>

</context>
</generatorConfiguration>

jdbc.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/blog
jdbc.username=root
jdbc.password=1234
#定义初始连接数
initialSize=0
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000

log4j.properties

#log4j.rootLogger=WARN, stdout, file
log4j.rootLogger=INFO,console,dailyFile

###继承rootLogger-->additivity
#log4j.additivity.org.apache=true
# 控制台(console)
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Threshold=WARN
log4j.appender.console.ImmediateFlush=true
log4j.appender.console.Target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%n%-d{yyyy-MM-dd HH:mm:ss}%n[%p]-[Thread: %t]-[%C.%M()]: %m%n

# 每天产生一个日志文件(dailyFile)
log4j.appender.dailyFile=org.apache.log4j.DailyRollingFileAppender
#当天的日志文件全路径
log4j.appender.dailyFile.File=${catalina.home}/xx/xx.log
#log4j.appender.dailyFile.File=/mnt/local/xx/xx.log
#服务器启动日志是追加，false：服务器启动后会生成日志文件把老的覆盖掉
log4j.appender.dailyFile.Append=true
#日志文件格式
log4j.appender.dailyFile.layout=org.apache.log4j.PatternLayout
log4j.appender.dailyFile.layout.ConversionPattern=%-d{yyyy-MM-dd HH\:mm\:ss} [%c]-[%p] [%t] (%F\:%L) ->%m %n
log4j.appender.dailyFile.Threshold=WARN
#设置每天生成一个文件名后添加的名称,备份名称：年月日.log
log4j.appender.dailyFile.DatePattern='.'yyyy-MM-dd'.log'

当然还有最重要的pom.xml

mybatis-generator的插件要在pom.xml中配置

<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>org.blog</groupId>
<artifactId>Blog</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>Blog Maven Webapp</name>
<url>http://maven.apache.org</url>

<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<encoding>UTF-8</encoding>
<!-- spring版本号 -->
<spring.version>4.2.5.RELEASE</spring.version>
<!-- mybatis版本号 -->
<mybatis.version>3.4.1</mybatis.version>
<!-- log4j日志文件管理包版本 -->
<slf4j.version>1.7.7</slf4j.version>
<log4j.version>1.2.17</log4j.version>
</properties>

<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<!-- 表示开发的时候引入，发布的时候不会加载此包 -->
<scope>test</scope>
</dependency>

<!-- spring核心包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>

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

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>

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

<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>

<!-- mybatis-generator -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.3</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.3</version>
<scope>test</scope>
</dependency>

<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactI
b331
d>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>

<!-- mybatis 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.1.6</version>
</dependency>

<!-- 导入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>

<!-- 导入Mysql数据库链接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>

<!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>

<!-- JSTL标签类 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

<!-- 日志文件管理包 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>

<!-- 格式化对象，方便输出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>

<!-- 映入JSON -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>

<!-- 上传组件包 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
</dependencies>

<build>
<finalName>Blog</finalName>
<plugins>
<!--MG的插件-->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.3</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
<dependencies>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java 配置这个依赖主要是为了等下在配置MG的时候可以不用配置classPathEntry这样的一个属性，避免
代码的耦合度太高 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>

配置完插件后，在IDEA中配置运行Mybatis-Generator插件的方法：