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github源码地址:https://github.com/Streamhu/ssh_demo
一、前期准备
1.环境
开发环境:idea + maven + jdk1.8 + tomcat8 + msyql5.6.14
主要框架:Spring(4.2.5) + SpringMVC(4.2.5) + Mybatis(3.3.0)
2. jdk配置好,tomcat配置好,maven配置,mysql安装好,且建好user表(id, name, address, city)
3. 在idea中新建maven项目
二、spring搭建
1. 在pom.xml中已入若下配置(导入spring所需的jar包)
<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.5.RELEASE</version >
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
2. 在resources目录下新建spring.xml配置文件,如下
<?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">
</beans>
3. 在web.xml中加入如下配置
<!-- 容器全局变量加载spring.xml文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<!-- 监听器启动spring容器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
三、springMVC搭建
1. 导入springMVC需要的jar包, 在pom.xml中追加如下配置
<!-- spring-mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
2. 新建com.hh.test.controller包(供后面springMVC文件扫描包用)
3. 在resources目录下新建spring-mvc.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"
default-autowire="byName">
<!-- 自动扫描的包名, -->
<context:component-scan base-package="com.hh.test.controller" ></context:component-scan>
<!-- 默认的注解映射的支持 -->
<mvc:annotation-driven />
</beans>
4. 在web.xml中加入以下配置
<servlet>
<servlet-name>spring-mvc</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>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
5. 在com.hh.test.controller新建测试类TestController
@Controller
public class TestController {
@RequestMapping(value="/test")
public void test(){
System.out.println("springMVC配置成功");
}
}
6. 启动tomcat, 在浏览器中输入 http://localhost:8080/test ,可以看到控制台打印语句 “springMVC配置成功”
四、mybatis配置
1.导入mybatis以及集成所需的jar包,配置如
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
<!-- spring jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
<!-- msyql的驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.25</version>
</dependency>
2. 建以下文件(具体看项目github代码)
1)建com.hh.test.entity包
2) 建User类(POJO对象)
3)建com.hh.test.dao包
4) 建userDao接口
5)建com.hh.test.service包
6)建UserService接口
7)建com.hh.test.service.impl包
8)建具体实现类UserServiceImpl
9)在com.hh.test.service.controller下建MybatisTestController类
10)在resource文件夹下建mapper文件夹
3. 在resouces/mapper下建UserMapper.xml文件
<mapper namespace="com.hh.test.dao.UserDao">
<!-- 定义好返回类型 -->
<resultMap type="com.hh.test.entity.User" id="userResultMap" >
<!-- 映射数据库的字段 -->
<id property="id" column="id"></id>
<result property="name" column="name"></result>
<result property="address" column="address"></result>
<result property="city" column="city"></result>
</resultMap>
<!-- 查找所有记录 -->
<select id="selectAll" resultMap="userResultMap">
select * from user
</select>
</mapper>
4.在resources目录下新建mybatis-config.xml文件
<?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>
</configuration>
5. 在resources目录下新建jdbc.propertites(写好连接mysql的参数)
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/hh?characterEncoding=utf-8
jdbc.username=root
jdbc.password=
6. 在spring.xml文件中配置
<?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">
<!-- 新增扫描service层的包 -->
<context:component-scan base-package="com.hh.test.service" ></context:component-scan>
<!-- 引入数据库配置参数文件jdbc.properties -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 数据源,加载jdbc驱动参数 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- spring和MyBatis整合 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapper.xml文件 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>
<!-- Mapper接口所在包名,Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.hh.test.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
</beans>
7. 启动tomcat, 在浏览器中输入 http://localhost:8080/test/mybatis/select, 在控制台打印出从数据库获取的数据表示成功
参考网址
注:文章是经过参考其他的文章然后自己整理出来的,有可能是小部分参考,也有可能是大部分参考,但绝对不是直接转载,觉得侵权了我会删,我只是把这个用于自己的笔记,顺便整理下知识的同时,能帮到一部分人。
ps : 有错误的还望各位大佬指正,小弟不胜感激