最优雅地整合 Spring & Spring MVC & MyBatis 搭建 Java 企业级应用(附源码)

这里使用 Maven 项目管理工具构建项目

初始化项目 打开 Intellij IDEA，点击 Create New Project 选择 Maven 构建项目 选择 JDK 版本

选择 maven-archetype-webapp 模板（Java Web 项目）

填写项目在 Maven 仓库中的坐标（在 Maven 仓库中根据这个坐标才能找到该项目）

选择 Maven 路径 选择 Maven 配置文件路径 选择 Maven 本地仓库路径

填写项目名 选择工作目录

创建目录

在 src > main 目录下分别新建 java 源码目录 和 resource 配置文件目录

java 目录下创建基本的源码目录结构

webapp 目录下创建 static 目录，用于存放静态资源文件（css, js, img 等）

webapp > WEB-INF 目录下创建 views 目录，用于存放视图页面（jsp, html 等）

pom.xml

完整的 pom.xml 配置如下

<?xml version='1.0' encoding='UTF-8'?><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/xsd/maven-4.0.0.xsd'> <modelVersion>4.0.0</modelVersion> <groupId>com.antoniopeng</groupId> <artifactId>ssm-example</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>hello-ssm Maven Webapp</name> <!-- FIXME change it to the project’s website --> <url>https://antoniopeng.com</url> <properties> <!-- 环境配置 --> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <!-- 统一的依赖管理 --> <alibaba-druid.version>1.1.6</alibaba-druid.version> <apache-httpclient.version>4.5.5</apache-httpclient.version> <commons-email.version>1.5</commons-email.version> <commons-fileupload.version>1.3.2</commons-fileupload.version> <commons-lang3.version>3.5</commons-lang3.version> <hibernate-validator.version>5.3.4.Final</hibernate-validator.version> <jackson.version>2.9.5</jackson.version> <jstl.version>1.2</jstl.version> <junit.version>4.12</junit.version> <kaptcha.version>2.3</kaptcha.version> <log4j.version>1.2.17</log4j.version> <lombok.version>1.16.18</lombok.version> <mybaits-spring.version>1.3.1</mybaits-spring.version> <mybatis.version>3.2.8</mybatis.version> <mysql.version>5.1.46</mysql.version> <servlet-api.version>3.1.0</servlet-api.version> <slf4j.version>1.7.25</slf4j.version> <spring.version>4.3.17.RELEASE</spring.version> </properties> <dependencies> <!-- Test Begin --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> </dependency> <!-- Test Begin --> <!-- Spring Begin --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</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-aspects</artifactId> <version>${spring.version}</version> </dependency> <!-- Spring End --> <!-- Servlet Begin --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>${servlet-api.version}</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>${jstl.version}</version> </dependency> <!-- Servlet End --> <!-- Log Begin --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>jcl-over-slf4j</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>jul-to-slf4j</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <!-- Log End --> <!-- Commons Begin --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>${commons-lang3.version}</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>${commons-fileupload.version}</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-email</artifactId> <version>${commons-email.version}</version> </dependency> <!-- Commons End --> <!-- Database Begin --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${alibaba-druid.version}</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>${mybaits-spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>${hibernate-validator.version}</version> </dependency> <!-- Database End --> <!-- Json Begin --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>${jackson.version}</version> </dependency> <!-- Json End --> <!-- Apache Http Begin --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>${apache-httpclient.version}</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>fluent-hc</artifactId> <version>${apache-httpclient.version}</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpmime</artifactId> <version>${apache-httpclient.version}</version> </dependency> <!-- Apache Http End --> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> </dependency> </dependencies> <build> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> </plugins> </pluginManagement> <plugins> <!-- Compiler 插件, 设定 JDK 版本 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.7.0</version> <configuration> <source>${java.version}</source> <target>${java.version}</target> <encoding>${project.build.sourceEncoding}</encoding> <showWarnings>true</showWarnings> </configuration> </plugin> </plugins> <!-- 资源文件配置 --> <resources> <resource> <directory>src/main/java</directory> <excludes> <exclude>**/*.java</exclude> </excludes> </resource> <resource> <directory>src/main/resources</directory> </resource> </resources> </build></project>全局配置文件

resources 目录下创建全局配置文件，供后续调用

# JDBCjdbc.driverClass=com.mysql.jdbc.Driverjdbc.connectionURL=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf-8&useSSL=falsejdbc.username=rootjdbc.password=123456# JDBC Pooljdbc.pool.init=1jdbc.pool.minIdle=3jdbc.pool.maxActive=20# Web View Locationweb.view.prefix=/WEB-INF/views/web.view.suffix=.jsp# Upload Sizeweb.maxUploadSize=10485760Spring 核心配置

resources 目录下创建 spring-context.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 http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd'> <!-- 开启 Spring 相关注解 --> <context:annotation-config /> <!-- 使用 Annotation 自动注册 Bean, 并且只扫描 @Controller --> <context:component-scan base-package='com.antoniopeng.hello.ssm'> <context:exclude-filter type='annotation' expression='org.springframework.stereotype.Controller' /> </context:component-scan> <!-- 配置事务管理器 --> <bean class='org.springframework.jdbc.datasource.DataSourceTransactionManager'> <property name='dataSource' ref='dataSource'/> </bean> <!-- 开启事务注解驱动 --> <tx:annotation-driven transaction-manager='transactionManager'/></beans>整合 Spring MVC

创建 spring-mvc.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'> <!-- 加载配置属性文件 --> <context:property-placeholder ignore-unresolvable='true' location='classpath:ssm.properties'/> <!-- 使用 Annotation 自动注册 Bean,只扫描 @Controller --> <context:component-scan base-package='com.antoniopeng.hello.ssm.controller' use-default-filters='false'> <context:include-filter type='annotation' expression='org.springframework.stereotype.Controller'/> </context:component-scan> <!-- 默认的注解映射的支持 --> <mvc:annotation-driven /> <!-- 定义视图文件解析 --> <bean class='org.springframework.web.servlet.view.InternalResourceViewResolver'> <property name='prefix' value='${web.view.prefix}'/> <property name='suffix' value='${web.view.suffix}'/> </bean> <!-- 静态资源映射 --> <mvc:resources mapping='/static/**' location='/static/' cache-period='31536000'/> <!-- 拦截器配置 --> <mvc:interceptors> <!-- 拦截登录 --> <mvc:interceptor> <mvc:mapping path='/**'/> <mvc:exclude-mapping path='/login' /> <mvc:exclude-mapping path='/static/**' /> <bean /> </mvc:interceptor> </mvc:interceptors> <!-- 上传文件拦截，设置最大上传文件大小 10M = 10*1024*1024(B) = 10485760 bytes --> <bean class='org.springframework.web.multipart.commons.CommonsMultipartResolver'> <property name='maxUploadSize' value='${web.maxUploadSize}'/> </bean></beans>MyBatis 配置

创建 mybatis-config.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> <!-- 全局参数 --> <settings> <!-- 打印 SQL 语句 --> <setting name='logImpl' value='STDOUT_LOGGING' /> <!-- 使全局的映射器启用或禁用缓存。 --> <setting name='cacheEnabled' value='false'/> <!-- 全局启用或禁用延迟加载。当禁用时，所有关联对象都会即时加载。 --> <setting name='lazyLoadingEnabled' value='true'/> <!-- 当启用时，有延迟加载属性的对象在被调用时将会完全加载任意属性。否则，每种属性将会按需要加载。 --> <setting name='aggressiveLazyLoading' value='true'/> <!-- 是否允许单条 SQL 返回多个数据集 (取决于驱动的兼容性) default:true --> <setting name='multipleResultSetsEnabled' value='true'/> <!-- 是否可以使用列的别名 (取决于驱动的兼容性) default:true --> <setting name='useColumnLabel' value='true'/> <!-- 允许 JDBC 生成主键。需要驱动器支持。如果设为了 true，这个设置将强制使用被生成的主键，有一些驱动器不兼容不过仍然可以执行。 default:false --> <setting name='useGeneratedKeys' value='false'/> <!-- 指定 MyBatis 如何自动映射 数据基表的列 NONE：不映射 PARTIAL：部分 FULL:全部 --> <setting name='autoMappingBehavior' value='PARTIAL'/> <!-- 这是默认的执行类型 （SIMPLE: 简单； REUSE: 执行器可能重复使用prepared statements语句；BATCH: 执行器可以重复执行语句和批量更新） --> <setting name='defaultExecutorType' value='SIMPLE'/> <!-- 使用驼峰命名法转换字段。 --> <setting name='mapUnderscoreToCamelCase' value='true'/> <!-- 设置本地缓存范围 session:就会有数据的共享 statement:语句范围 (这样就不会有数据的共享 ) defalut:session --> <setting name='localCacheScope' value='SESSION'/> <!-- 设置 JDBC 类型为空时,某些驱动程序 要指定值, default:OTHER，插入空值时不需要指定类型 --> <setting name='jdbcTypeForNull' value='NULL'/> </settings></configuration>整合 Druid

resources 目录下创建 spring-context-druid.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' 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'> <!-- 加载配置属性文件 --> <context:property-placeholder ignore-unresolvable='true' location='classpath:ssm.properties'/> <!-- 数据源配置, 使用 Druid 数据库连接池 --> <bean init-method='init' destroy-method='close'> <!-- 数据源驱动类可不写，Druid默认会自动根据URL识别DriverClass --> <property name='driverClassName' value='${jdbc.driverClass}'/> <!-- 基本属性 url、user、password --> <property name='url' value='${jdbc.connectionURL}'/> <property name='username' value='${jdbc.username}'/> <property name='password' value='${jdbc.password}'/> <!-- 配置初始化大小、最小、最大 --> <property name='initialSize' value='${jdbc.pool.init}'/> <property name='minIdle' value='${jdbc.pool.minIdle}'/> <property name='maxActive' value='${jdbc.pool.maxActive}'/> <!-- 配置获取连接等待超时的时间 --> <property name='maxWait' value='60000'/> <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> <property name='timeBetweenEvictionRunsMillis' value='60000'/> <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> <property name='minEvictableIdleTimeMillis' value='300000'/> <!-- 配置监控统计拦截的filters --> <property name='filters' value='stat'/> </bean></beans>整合 MyBatis

resources 目录下创建 spring-context-mybatis.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' 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'> <!-- 配置 SqlSession --> <bean class='org.mybatis.spring.SqlSessionFactoryBean'> <property name='dataSource' ref='dataSource'/> <!-- 用于配置对应实体类所在的包，多个 package 之间可以用 ’,’ 号分割 --> <property name='typeAliasesPackage' value='com.antoniopeng.hello.ssm.entity'/> <!-- 用于配置对象关系映射配置文件所在目录 --> <property name='mapperLocations' value='classpath*:/mapper/**/*.xml'/> <property name='configLocation' value='classpath:/mybatis-config.xml'></property> </bean> <!-- 扫描 Mapper --> <bean class='org.mybatis.spring.mapper.MapperScannerConfigurer'> <property name='basePackage' value='com.antoniopeng.hello.ssm.dao' /> </bean></beans>日志配置

创建 log4j.properties 日志配置文件

log4j.rootLogger=error, stdoutlog4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n log4j.logger.com.ibatis = debug log4j.logger.com.ibatis.common.jdbc.SimpleDataSource = debug log4j.logger.com.ibatis.common.jdbc.ScriptRunner = debug log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate = debug log4j.logger.java.sql.Connection = debug log4j.logger.java.sql.Statement = debug log4j.logger.java.sql.PreparedStatement = debuglog4j.logger.java.sql.ResultSet =debug log4j.logger.com.pro.mapper =debug

web.xml

完整的 web.xml 配置如下：

<?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_3_1.xsd' version='3.1'> <welcome-file-list> <welcome-file>/login</welcome-file> </welcome-file-list> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-context*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <filter> <filter-name>encodingFilter</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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <servlet-name>springServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping></web-app>创建访问视图

在 webapp > WEB-INF > views 目录下新建 index.jsp

<%@ page contentType='text/html;charset=UTF-8' language='java' %><html><head> <title>Index</title></head><body> <h1> Hello SSM </h1></body></html>

在 controller 目录下创建 IndexController 类

package com.antoniopeng.hello.ssm.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controllerpublic class IndexController { @RequestMapping(value = '/') public String index() { return 'index'; }}部署到 Tomcat 服务器

点击 Intellij IDEA 右上方 Add Configuration..

添加 Tomcat 本地服务器配置

配置下载好的 Tomcat 服务器

Tomcat8 官网下载地址

设置访问端口号，默认 8080

将项目添加到 Tomcat 服务器

最后运行项目，访问 http://localhost:8080/ 即可。

源码地址：https://github.com/antoniopeng/ssm-example.git

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