SSM整合 - 基础搭建篇
目录
Spring + SpringMVC + Mybatis 整合
1 整合步骤
1.1 创建Maven项目
- 新建Maven项目
- 在
Project Structure中的Modules中引入Web
-
修改
Web Resource Directories以及Deployment Descriptors Path3.1 编辑
Path Relative to Deployment Root，新建webapp目录，设置Path如下即可。src/main/webapp
3.2 编辑Deployment Descriptors中的Path，将Location修改为下图所示路径，即将WEB-INF目录置于webapp下。
-
引入
Modules，如下图所示。
-
至此，Maven项目搭建完毕，项目框架如下图所示。
1.2 pom.xml引入jar依赖
- 面向静态页面的SSM依赖：
<!-- 以war包形式部署于服务器上 -->
<packaging>war</packaging>
<!-- SSM整合依赖：Spring-SpringMVC Mybatis Mysql -->
<!-- 集中定义依赖版本号：注意版本号，避免踩坑 -->
<properties>
<spring.version>5.2.13.RELEASE</spring.version>
<mybatis.version>3.5.6</mybatis.version>
<mybatis.spring.version>1.3.3</mybatis.spring.version>
<pagehelper.version>5.2.1</pagehelper.version>
<mysql.version>8.0.16</mysql.version>
<druid.version>1.2.6</druid.version>
<servlet-api.version>4.0.1</servlet-api.version>
<jackson.version>2.9.6</jackson.version>
<log4j.version>1.2.17</log4j.version>
<junit.version>4.12</junit.version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</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>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 文件上传 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.4</version>
</dependency>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- Mybatis-Spring整合 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!-- 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<!-- MySQL -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- Druid连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!-- servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet-api.version}</version>
<scope>provided</scope>
</dependency>
<!-- Jackson - JSON处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- Log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- Junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- Spring测试 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- @Resource注解依赖 -->
<dependency>
<groupId>javax.annotation</groupId>
<artifactId>javax.annotation-api</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
<!-- 插件配置 -->
<build>
<resources>
<!-- 静态资源过滤 -->
<resource>
<!-- 所在的目录 -->
<directory>src/main/java</directory>
<!-- 包括目录下的.properties，.xml文件都会被扫描 -->
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
<plugins>
<!-- 设置项目的编译版本 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- 设置Tomcat插件 -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<!-- 指定端口 -->
<port>8080</port>
<!-- 请求路径 -->
<path>/</path>
<uriEncoding>UTF-8</uriEncoding>
</configuration>
</plugin>
<!-- 反向生成插件 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<!-- 配置文件的路径 -->
<configuration>
<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
</configuration>
<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
1.3 编写Mybatis的配置文件
Mybatis的配置文件mybatis.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>
<settings>
<setting name="logImpl" value="LOG4J"/>
</settings>
<!-- Spring接管其他的工作 - 数据源/映射文件注册/插件 -->
</configuration>
日志配置文件文件log4j.properties
# Global logging configuration info warning error
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
1.4 编写Spring的配置文件spring.xml
连接数据库的参数配置文件jdbc.properties
# 数据库版本 MySQL8
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/SSM?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai
jdbc.username=murphy
jdbc.password=murphy
spring.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
https://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 这些包添加注解后，对象的创建权限便交给Spring容器 -->
<context:component-scan base-package="com.murphy.mapper,com.murphy.service"/>
<!-- Spring整合Mybatis -->
<context:property-placeholder location="classpath*:jdbc.properties"/>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<!-- 驱动可以省略，根据URL自行判定 -->
<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>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 如果有mybatis的单独的配置文件，需要在此引入 -->
<property name="configLocation" value="classpath:mybatis.xml"/>
<property name="dataSource" ref="dataSource"/>
<!-- 配置别名 -->
<property name="typeAliasesPackage" value="com.murphy.pojo"/>
<!-- 配置映射文件 -->
<property name="mapperLocations" value="classpath:com/murphy/mapper/*.xml"/>
<!-- 配置插件 -->
<property name="plugins">
<array>
<!-- 分页 -->
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<value>
reasonable=true
</value>
</property>
</bean>
</array>
</property>
</bean>
<!-- 接口产生动态代理类 -->
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.murphy.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<!-- 通过注解实现事务 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
1.5 编写SpringMVC的配置文件springmvc.xml
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
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- SpringMVC的配置文件：控制器的bean对象在此处扫描 -->
<context:component-scan base-package="com.murphy.controller"/>
<mvc:annotation-driven/>
<!-- 视图解析器 -->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/pages/"/>
<property name="suffix" value=".html"/>
</bean>
<!-- 静态资源处理 -->
<mvc:resources mapping="/img/**" location="/img/"/>
<mvc:resources mapping="/js/**" location="/js/"/>
<mvc:resources mapping="/css/**" location="/css/"/>
<mvc:resources mapping="/fonts/**" location="/fonts/"/>
<mvc:resources mapping="/static/**" location="/static/"/>
<mvc:resources mapping="/pages/**" location="/pages/"/>
<!-- 文件上传 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
</bean>
</beans>
1.6 导入静态资源到webapp文件下
1.7 编写web.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<welcome-file-list>
<welcome-file>/pages/index.html</welcome-file>
</welcome-file-list>
<!-- Spring的配置 -->
<context-param>
<!--
contextConfigLocation：表示用于加载Bean的配置文件
classpath / classpath* 区别：
classpath：只会到你的class路径中查找文件
classpath*：不仅包含class路径，还包括jar文件中(class路径)进行查找
-->
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:spring.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- SpringMVC的配置 -->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 创建前端控制器的时候去读SpringMVC配置文件启动IoC容器 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:springmvc.xml</param-value>
</init-param>
<!-- Tomcat启动便创建此对象 -->
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 配置拦截路径URL，所有请求都会被前端控制器拦截处理 -->
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--
使用Rest风格的URI 将页面普通的POST请求转换为指定的delete或者put请求
原理：在Ajax中发送POST请求后，带_method参数，将其修改为PUT，或者DELETE请求
-->
<filter>
<filter-name>httpMethodFilter</filter-name>
<filter-class>
org.springframework.web.filter.HiddenHttpMethodFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>httpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 注册字符集过滤器：POST请求中文乱码问题的解决方法 -->
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 指定字符集 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<!-- 强制request使用字符集encoding -->
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
<!-- 强制response使用字符集 -->
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
1.8 测试
启动项目，浏览器访问http://localhost:8080/。看到页面表示项目整合成功。
- 至此，SSM整合完毕，项目结构如图所示：
2 使用Mybatis反向生成实体类、Mapper和映射文件
2.1 反向生成配置文件generatorConfig.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">
<!-- 配置生成器：标了序号的部分需要修改为个人内容 -->
<generatorConfiguration>
<!--1、数据库驱动jar:添加自己的jar路径 -->
<classPathEntry
location="/usr/local/maven/apache-maven-3.6.3/repository/mysql/mysql-connector-java/8.0.16/mysql-connector-java-8.0.16.jar"/>
<context id="MyBatis" targetRuntime="MyBatis3">
<!--去除注释 -->
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!--2、数据库连接 -->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/SSM?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai"
userId="murphy"
password="murphy">
</jdbcConnection>
<!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为Integer;
为true时把JDBC DECIMAL和NUMERIC类型解析为java.math.BigDecimal -->
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!--3、生成实体类 指定包名以及生成的地址 (可以自定义地址，但是路径不存在不会自动创建使用Maven生成在target目录下，会自动创建) -->
<javaModelGenerator targetPackage="com.murphy.pojo"
targetProject="./src/main/java">
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!--4、生成SQLmapper.xml映射文件 -->
<sqlMapGenerator targetPackage="com.murphy.mapper"
targetProject="./src/main/resources">
</sqlMapGenerator>
<!--5、生成Dao(Mapper)接口文件,-->
<javaClientGenerator type="XMLMAPPER"
targetPackage="com.murphy.mapper"
targetProject="./src/main/java">
</javaClientGenerator>
<!--6、要生成哪些表(更改tableName和domainObjectName就可以) -->
<!--
tableName:要生成的表名
enableCountByExample:Count语句中加入where条件查询，默认为true开启
enableUpdateByExample:Update语句中加入where条件查询，默认为true开启
enableDeleteByExample:Delete语句中加入where条件查询，默认为true开启
enableSelectByExample:Select多条语句中加入where条件查询，默认为true开启
selectByExampleQueryId:Select单个对象语句中加入where条件查询，默认为true开启 -->
<table tableName="Team">
<property name="useActualColumnNames" value="true"/>
</table>
<table tableName="Player">
<property name="useActualColumnNames" value="true"/>
</table>
<table tableName="game">
<property name="useActualColumnNames" value="true"/>
</table>
<table tableName="GameType">
<property name="useActualColumnNames" value="true"/>
</table>
<table tableName="Admins">
<property name="useActualColumnNames" value="true"/>
</table>
<table tableName="AdminRole">
<property name="useActualColumnNames" value="true"/>
</table>
</context>
</generatorConfiguration>
2.2 运行插件
注意：只能运行一次，运行完毕显示BUILD SUCCESS即为成功。
2.3 生成完毕之后的目录结构
