转https://url.cn/5sYnG1c
前言：从spring4.0之后，spring官方推荐使用java类替换之前的xml配置文件，今天使用spring最新版本5.1.5来实现零配置文件搭建ssm框架
1.1 创建maven工程，项目结构图
零配置文件实现ssm（spring+springMVC+Mybatis）框架整合
1.2 添加jar包
<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.aaa.qy93</groupId>
<artifactId>ssm</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>ssm Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<spring.version>5.1.5.RELEASE</spring.version>
</properties>
<dependencies>
<!-- 测试相关开始 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.1.5.RELEASE</version>
<scope>test</scope>
</dependency>
<!-- 测试相关结束 -->
<!-- springmvc开始 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- springmvc结束 -->
<!-- springAOP开始 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.9.2</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.2</version>
</dependency>
<!-- springAOP结束 -->
<!-- 数据库相关开始 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency>
<!-- 数据源的选取 -->
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<!-- 数据库相关结束 -->
<!-- mybatis相关开始 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- mybatis相关结束 -->
<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>ssm</finalName>
<plugins>
<!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-war-plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<!-- 禁用pom文件自动检查web.xml是否存在 -->
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<!-- 指定maven编译环境 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
1.3 创建配置类
1.3.1 编写applicationContext.xml =>springConfig.java
package com.aaa.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.context.annotation.FilterType;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.EnableTransactionManagement;
/**
* @author TeacherChen
* @description spring容器配置，装所有的bean，除了controller包下面的
* @company AAA软件
* @className QY95
* 2019年4月4日上午9:46:16
*/
@Configuration
@ComponentScan(basePackages= {"com.aaa"},excludeFilters={@Filter(type=FilterType.ANNOTATION,value={Controller.class})})
@EnableAspectJAutoProxy
@EnableTransactionManagement
public class SpringConfig {
}
1.3.2 编写xxx-servlet.xml =>springMVCConfig.java
package com.aaa.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
/**
* @author TeacherChen
* @description springmvc 的配置
* @company AAA软件
* @className QY93
* 2019年3月28日上午9:38:11
*/
@Configuration
@ComponentScan(basePackages= {"com.aaa.controller"})
@EnableWebMvc
//WebMvcConfigurer接口，目的是定制springmvc配置
public class SpringMVCConfig implements WebMvcConfigurer {
/**
* 添加视图解析器
*/
@Bean
public InternalResourceViewResolver getInternalResourceViewResolver() {
InternalResourceViewResolver internalResourceViewResolver = new InternalResourceViewResolver();
internalResourceViewResolver.setPrefix("/WEB-INF/classes/views/");
internalResourceViewResolver.setSuffix(".jsp");
return internalResourceViewResolver;
}
}
1.3.3 编写web.xml =>WebConfig.java
package com.aaa.config;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.DispatcherType;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration.Dynamic;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.request.RequestContextListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.DispatcherServlet;
/**
* @author TeacherChen
* @description web 容器的配置
* @company AAA软件
* @className QY93
* 2019年3月28日上午9:43:06
*/
public class WebConfig implements WebApplicationInitializer{
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
//加载配置类
AnnotationConfigWebApplicationContext ac = new AnnotationConfigWebApplicationContext();
ac.register(SpringConfig.class);
ac.register(SpringMVCConfig.class);
ac.setServletContext(servletContext);
//设置前端控制器
Dynamic addServlet = servletContext.addServlet("xxx", new DispatcherServlet(ac));
addServlet.addMapping("*.do");
//设置servlet的启动优先级
addServlet.setLoadOnStartup(1);
//添加servlet上下文监听
servletContext.addListener(new RequestContextListener());
javax.servlet.FilterRegistration.Dynamic addFilter = servletContext.addFilter("filterEncoding", new CharacterEncodingFilter());
/*
* <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>*/
Map<String,String> map = new HashMap<String,String>();
map.put("encoding", "UTF-8");
map.put("forceEncoding", "true");
addFilter.setInitParameters(map);//添加初始化参数
EnumSet<DispatcherType> dispatcherTypes = EnumSet
.allOf(DispatcherType.class);
dispatcherTypes.add(DispatcherType.REQUEST);
dispatcherTypes.add(DispatcherType.FORWARD);
//设置过滤请求的范围
addFilter.addMappingForUrlPatterns(dispatcherTypes, true, "/*");
}
}
零配置文件实现ssm（spring+springMVC+Mybatis）框架整合
1.3.4 编写mybatisConfig.xml => MybatisConfig.java
package com.aaa.config;
import java.io.IOException;
import javax.sql.DataSource;
import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import com.alibaba.druid.pool.DruidDataSource;
/**
* @author TeacherChen
* @description 跟数据库向关的配置
* @company AAA软件
* @className QY93 2019年3月29日上午11:40:33
*/
@Configuration
public class MybatisConfig {
/**
* 获取数据源对象
*/
@Bean
public DataSource getDataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setUsername("root");
dataSource.setPassword("root");
dataSource.setUrl(
"jdbc:mysql://localhost:3306/aaa?useUnicode=true&characterEncoding=gbk&zeroDateTimeBehavior=convertToNull&useSSL=false");
dataSource.setDriverClassName("com.mysql.jdbc.Driver");
return dataSource;
}
/**
* 配置事务管理器
*/
@Bean
public DataSourceTransactionManager getDataSourceTransactionManager() {
DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();
dataSourceTransactionManager.setDataSource(getDataSource());
return dataSourceTransactionManager;
}
/**
* 配置mybatis SqlSessionFactoryBean
*/
@Bean("MySqlSessionFactoryBean")
public SqlSessionFactoryBean getSqlSessionFactoryBean() {
SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
// 设置数据源
sqlSessionFactoryBean.setDataSource(getDataSource());
// 设置环境为开发模式
sqlSessionFactoryBean.setEnvironment("development");
// 设置事务管理方式transactionManager
JdbcTransactionFactory jdbcTransactionFactory = new JdbcTransactionFactory();
sqlSessionFactoryBean.setTransactionFactory(jdbcTransactionFactory);
// 设置别名
sqlSessionFactoryBean.setTypeAliasesPackage("com.aaa.entity");
// 扫描mybatis的mapper映射文件
PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
// mapper文件所在的路径
String locationPattern = "mapper/*.xml";
try {
sqlSessionFactoryBean.setMapperLocations(resolver.getResources(locationPattern));
} catch (IOException e) {
e.printStackTrace();
}
return sqlSessionFactoryBean;
}
/**
* 自动扫描使用jdk动态代理 将Mapper接口生成代理注入到Spring 容器中
*/
@Bean
public MapperScannerConfigurer getMapperScannerConfigurer() {
MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
mapperScannerConfigurer.setBasePackage("com.aaa.dao");
mapperScannerConfigurer.setSqlSessionFactoryBeanName("MySqlSessionFactoryBean");
return mapperScannerConfigurer;
}
}
1.4 创建表
零配置文件实现ssm（spring+springMVC+Mybatis）框架整合
1.5 创建dao,service,controller
1.5.1 编写dao接口
@Mapper
public interface DeptDao {
List findAllDept();
}
1.5.2 编写mapper映射文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.aaa.dao.DeptDao">
<sql id="mySql">deptno,dname,loc</sql>
<select id="findAllDept" resultType="dept">
select <include refid="mySql"></include> from dept
</select>
</mapper>
1.5.3 编写service
public interface DeptBiz {
List<Dept> findAllDept();
}
@Service
public class DeptBizImpl implements DeptBiz {
@Autowired
private DeptDao deptDao;
@Override
public List<Dept> findAllDept() {
return deptDao.findAllDept();
}
}
1.5.4 编写controller
@Controller
public class DeptController {
@Autowired
private DeptBiz deptBizImpl;
@RequestMapping("/findAllDept.do")
public String findAllDept(HttpServletRequest req) {
List<Dept> deptList = deptBizImpl.findAllDept();
req.setAttribute("deptList", deptList);
return "showDept";
}
}
1.6 jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@page isELIgnored="false" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>显示所有的部门</title>
</head>
<body>
<table border="1px">
<tr>
<td>部门编号</td>
<td>部门名称</td>
<td>部门位置</td>
</tr>
<c:forEach items="${deptList}" var="dept">
<tr>
<td>${dept.deptno}</td>
<td>${dept.dname}</td>
<td>${dept.loc}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
1.7 测试
零配置文件实现ssm（spring+springMVC+Mybatis）框架整合
至此，ssm框架整合完美结束，虽然很多企业都切换到springboot，但是仍然有在继续使用ssm的企业，一句话，离开了springMVC，springboot也玩不转是吧！