SSM框架整合（IntellIj IDEA+Maven+Spring+SpringMVC+MyBatis）之MyBatis

我认为框架整合不熟练的话按照MyBatis->SpringMVC->Spring顺序整合比较好，先配置MyBatis是因为不需要额外的配置服务器，进行单元测试比较容易。Spring是用来进行整合的，所以等其它框架配置好之后进行整合不会显得很乱。

1. IntelliJ IDEA搭建Maven项目











新建完项目之后就是下面这样一个空项目



按规范搭建一个项目结构，src下面分为main和test，main放正式代码和正式资源配置文件，test下放测试代码和测试资源文件



然后右键给项目设置属性，main下面的java设置为sources root，resources设置为resources root；test下面的java设置为test resources root，resources设置为test resources root，idea打包是分类打包的，比如说java文件里是方代码的就不能方配置文件，不然打包的时候配置文件没有包含进去，同样的测试文件里不能放正式代码。

要先设置好各个文件的属性才能建包，没设置好属性右键就没有package这个选项，如果点击了directory建立的是目录，名字为com.xxx.xxx的目录，不是层叠的包，必须在sources root状态下才有建包的选项。



2. 配置MyBatis

2.1. 导包

配置pom.xml的时候注意包的使用范围，也就是scope属性。有一次做项目报错就是因为这个。当时项目要做一个邮件验证功能，我就用javaEE自带的邮件包来做，测试的时候好好的能发送，但是发布到服务器上的时候就不能发送。检查了好久才发现是javaee-api设置的范围是provided，也就是不打包发布到服务器上，我就把provided给删了，默认为compile打包到服务器，然后发现连启动服务器都报错了。经过仔细排查发现是javaee-api自带的servlet包和tomcat自带的servlet包冲突了，所以我又把javaee-api的范围给改回provided，邮件要用的包再单独添加，这下才彻底解决了。

<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.overridere.web</groupId>
<artifactId>blogmanage</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>blogmanage Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<dependencies>

<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jav
4000
ax.servlet.jsp.jstl</artifactId>
<version>1.2.2</version>
</dependency>

<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-infrastructure</artifactId>
<version>3.0.7.RELEASE</version>
</dependency>

<!-- dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>

<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>

<!-- 添加mybatis支持 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>

<!-- jdbc驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.8</version>
</dependency>

<!-- 添加日志支持 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.12</version>
</dependency&g
10917
t;

<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.18.1-GA</version>
</dependency>

<!-- json对应MappingJackson2HttpMessageConverter,2.x版本以上 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>

</dependencies>
<build>
<finalName>blogmanage</finalName>
</build>
</project>

2.2. jdbc.properties配置文件

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/blog
username=root
password=ying1995520***

2.3编写MyBatis配置文件SqlMapConfig.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>
<!-- 加载数据库连接参数配置文件 -->
<properties resource="jdbc.properties" />

<!-- 全局配置参数 -->
<settings>
<!-- 开启延迟加载 -->
<setting name="lazyLoadingEnabled" value="true" />
<setting name="aggressiveLazyLoading" value="false" />

<!-- 打开二级缓存 -->
<setting name="cacheEnabled" value="true" />
</settings>

<typeAliases>
</typeAliases>

<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
</dataSource>
</environment>
</environments>

<mappers>
<package name="com.jyh.mapper"/>
</mappers>

</configuration>

2.4 使用Maven插件自动生成domain类、Mapper接口和Mapper.xml文件

2.4.1在pom.xml文件中引入插件

<build>
<finalName>blogmanage</finalName>
<!-- mybatis自动生成代码插件 -->
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build>

2.4.2 编写generatorConfig.xml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>
<!-- 配置mysql 驱动jar包路径.用了绝对路径 -->
<classPathEntry location="E:/JAVA/maven/mavenRepository/mysql/mysql-connector-java/5.1.8/mysql-connector-java-5.1.8.jar" />

<context id="wangyongzhi_mysql_tables" targetRuntime="MyBatis3">
<!-- 防止生成的代码中有很多注释，加入下面的配置控制 -->
<commentGenerator>
<property name="suppressAllComments" value="true" />
<property name="suppressDate" value="true" />
</commentGenerator>

<!-- 数据库连接 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/blog"
userId="root"
password="ying1995520***">
</jdbcConnection>

<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>

<!-- Model模型生成器,用来生成含有主键key的类，记录类 以及查询Example类
targetPackage     指定生成的model生成所在的包名
targetProject     指定在该项目下所在的路径
-->
<javaModelGenerator targetPackage="com.jyh.domain" targetProject="src/main/java">
<!-- 是否对model添加 构造函数 -->
<property name="constructorBased" value="true"/>

<!-- 是否允许子包，即targetPackage.schemaName.tableName -->
<property name="enableSubPackages" value="true" />

<!-- 建立的Model对象是否 不可改变  即生成的Model对象不会有 setter方法，只有构造方法
<property name="immutable" value="true"/> -->

<!-- 是否对类CHAR类型的列的数据进行trim操作 -->
<property name="trimStrings" value="true" />

<!-- 给Model添加一个父类
<property name="rootClass" value="com.foo.louis.Hello"/>
-->
</javaModelGenerator>

<!-- sql mapper 映射配置文件 -->
<sqlMapGenerator targetPackage="com.jyh.mapper"  targetProject="src/main/resources">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>

<!-- 客户端代码，生成易于使用的针对Model对象和XML配置文件 的代码
type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象
type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象
type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口
-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.jyh.mapper"  targetProject="src/main/java">
<property name="enableSubPackages" value="true" />
<!--
定义Maper.java 源代码中的ByExample() 方法的可视性，可选的值有：
public;
private;
protected;
default
注意：如果 targetRuntime="MyBatis3",此参数被忽略\
<property name="exampleMethodVisibility" value=""/>
-->

<!--
方法名计数器
Important note: this property is ignored if the target runtime is MyBatis3.
<property name="methodNameCalculator" value=""/>
-->

<!-- 为生成的接口添加父接口
<property name="rootInterface" value=""/>-->
</javaClientGenerator>

<!-- 数据表进行生成操作 schema:相当于库名; tableName:表名; domainObjectName:对应的DO -->
<table schema="blog" tableName="article" domainObjectName="Article"
enableCountByExample="false" enableUpdateByExample="false"
enableDeleteByExample="false" enableSelectByExample="false"
selectByExampleQueryId="false">
</table>
<table schema="blog" tableName="user" domainObjectName="User"
enableCountByExample="false" enableUpdateByExample="false"
enableDeleteByExample="false" enableSelectByExample="false"
selectByExampleQueryId="false">
</table>
<table schema="blog" tableName="comment" domainObjectName="Comment"
enableCountByExample="false" enableUpdateByExample="false"
enableDeleteByExample="false" enableSelectByExample="false"
selectByExampleQueryId="false">
</table>

</context>
</generatorConfiguration>

2.4.3 运行插件





2.4.4 运行结果：



3. 单元测试运行结果：