在Java工程创建以后（工程目录结构如下图所示），要实现Spring、Mybatis、SpringMVC的整合，需首先进行技术间的整合，使得三种技术能够相互配合进行工作。
相关配置文件
- Spring
SpringConfig- Mybatis
MybatisConfig
JdbcConfig
jdbc.properties- SpringMVC
ServletConfig
SpringMvcConfig
pom.xml
配置所需依赖
<?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.wu</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.2.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.28</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.16</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<port>80</port>
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
导入所需要的依赖坐标
- spring-webmvc
- spring-jdbc
- spring-test
- mybatis
- mybatis-spring
- mysql-connector-java
- druid
- junit
- javax.servlet-api
- jackson-databind
SpringConfig.class
通过@Configuration注解来设置当前类为控制类；通过@CompoentScan注解来加载该控制类所控制的Bean；通过@PropertySource注解来加载properties文件，实现属性加载；通过@Import注解来加载Jdbc和Mybatis的配置类。
package com.wu.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.PropertySource;
@Configuration //设置当前类为控制类
@ComponentScan({
"com.wu.service"}) // 加载该控制类所控制的Bean
@PropertySource("classpath:jdbc.properties") // 去掉classpath：会报错
@Import({
JdbcConfig.class, MybatisConfig.class})
public class SpringConfig {
}
JdbcConfig.class
通过@Value注解来加载properties文件中的属性
package com.wu.config;
import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import javax.sql.DataSource;
public class JdbcConfig {
@Value("${jdbc.driver}")
private String driver;
@Value("${jdbc.url}")
private String url;
@Value("${jdbc.username}")
private String username;
@Value("${jdbc.password}")
private String password;
@Bean
public DataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName(driver);
dataSource.setUrl(url);
dataSource.setUsername(username);
dataSource.setPassword(password);
return dataSource;
}
}
MybatisConfig.class
创建SqlSessionFactoryBean和MapperScannerConfigurer扫描映射
package com.wu.config;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;
import javax.sql.DataSource;
public class MybatisConfig {
@Bean
public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource) {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(dataSource);
factoryBean.setTypeAliasesPackage("com.wu.domain");
return factoryBean;
}
@Bean
public MapperScannerConfigurer mapperScannerConfigurer() {
MapperScannerConfigurer msc = new MapperScannerConfigurer();
msc.setBasePackage("com.wu.dao");
return msc;
}
}
jdbc.properties
配置数据库连接信息
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm_db
jdbc.username=root
jdbc.password=
ServletConfig.class
配置web容器配置类，继承AbstractAnnotationConfigDispatcherServletInitializer，重写三个方法。getRootConfigClasses加载Spring核心配置，getServletConfigClasses加载SpringMvc核心配置。
package com.wu.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[]{
SpringConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class[]{
SpringMvcConfig.class};
}
@Override
protected String[] getServletMappings() {
return new String[]{
"/"};
}
}
SpringMvcConfig.class
通过注解设置为配置类，配置扫描包，添加@EnableWebMvc注解
package com.wu.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@Configuration
@ComponentScan("com.wu.controller")
@EnableWebMvc
public class SpringMvcConfig {
}
进行完上述操作以后，SSM框架整合工作已经结束，后续进行相关功能模块的编写即可。