首先需要准备好要导入的maven依赖(配置资源导出):
<dependencies>
<!--Junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- 数据库连接池 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--Servlet - JSP -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--Mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<!--Spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
然后一层一层的进行配置 从MyBatis层->Spring层->SpringMVC层
Mybatis层:
1.创建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>
<!--给实体类设置别名-->
<typeAliases>
<typeAlias type="com.jee.entity.Book" alias="book"/>
</typeAliases>
<!--其他设置都在spring配置文件中配置-->
</configuration>
2.创建与数据库相对应的实体类 (因为这只是一个简单的ssm整合的项目 所以数据库十分简单),和相应的Mapper接口
package com.jee.entity;
public class Book {
private int id;
private String name;
private int count;
private String introduce;
//一些构造方法和get/set方法省略
}
package com.jee.dao;
import com.jee.entity.Book;
import java.util.List;
public interface BookMapper {
boolean addBook(Book book);
boolean deleteBookById(@Param("id") int id);
Book queryBookById(@Param("id") int id);
List<Book> queryAllBook();
boolean updateBook(Book book);
}
3.编写相应的Mapper.xml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.jee.dao.BookMapper">
<insert id="addBook" parameterType="book">
insert into book values(#{id},#{name},#{count},#{introduce})
</insert>
<delete id="deleteBookById" parameterType="int">
delete from book where id = #{id}
</delete>
<resultMap id="bookMapper" type="book">
<result property="introduce" column="detail"/>
</resultMap>
<select id="queryBookById" parameterType="int" resultMap="bookMapper">
select * from book where id = #{id}
</select>
<select id="queryAllBook" resultMap="bookMapper">
select * from book
</select>
<update id="updateBook" parameterType="book">
update book set name = #{name},count = #{count},detail = #{introduce} where id = #{id}
</update>
</mapper>
4.配置db.properties文件(设置dataSource参数)
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssm_build?useSSL=true&useUnicode=true&characterEncoding=utf8
username=root
password=123456
5.创建Service接口和实现类
//一般Service层中的实体类都需要使用Service注解
@Service
public class BookServiceImpl implements BookService {
//使用AutoWield注解 实现自动注入 就无须手动去注入属性了
@Autowired
private BookMapper mapper;
public void setMapper(BookMapper mapper) {
this.mapper = mapper;
}
public boolean addBook(Book book) {
mapper.addBook(book);
return true;
}
public boolean deleteBookById(int id) {
mapper.deleteBookById(id);
return true;
}
public Book queryBookById(int id) {
return mapper.queryBookById(id);
}
public List<Book> queryAllBook() {
return mapper.queryAllBook();
}
public boolean updateBook(Book book) {
mapper.updateBook(book);
return true;
}
}
6.配置Spring整合Mybatis的xml文件 spring-dao.xml 这里配置比较多 认真看 我都有注释 每一个都要看
<?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
https://www.springframework.org/schema/context/spring-context.xsd">
<!-- <!–关联数据库配置文件 db.properties.xml (使用有bug 使用配置文件无法连接Mysql 换普通连接可以用)–>-->
<!-- <context:property-placeholder location="classpath:db.properties"/>-->
<!-- 配置dataSource 数据源(c3p0的连接池) -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!--在数据源中配置一些mysql连接的属性-->
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssm_build?useSSL=true&useUnicode=true&characterEncoding=UTF-8"/>
<property name="user" value="root"/>
<property name="password" value="123456"/>
<!-- <property name="driverClass" value= "${driver}"/>-->
<!-- <property name="jdbcUrl" value="${url}"/>-->
<!-- <property name="user" value="${username}"/>-->
<!-- <property name="password" value="${password}"/>-->
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- 关闭连接后不自动commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- 获取连接超时时间 -->
<property name="checkoutTimeout" value="10000"/>
<!-- 当获取连接失败重试次数 -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 配置SqlSessionFactory -->
<bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
<!--连接数据源-->
<property name="dataSource" ref="dataSource"/>
<!--配置Mybatis-config.xml文件的关联-->
<property name="configLocation" value="classpath:Mybatis-config.xml"/>
<!--配置mapper.xml的映射(在Mybatis-config.xml文件中也可以做 在这里也可以做-->
<property name="mapperLocations" value="classpath:com/jee/dao/BookMapper.xml"/>
</bean>
<!--可以注册一个SqlSessionTemplate对象 也可以配置扫描Dao接口包,
动态实现Dao接口注入到spring容器中,这里使用第二种方法-->
<!--解释 : https://www.cnblogs.com/jpfss/p/7799806.html-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描Dao接口包 -->
<property name="basePackage" value="com.jee.dao"/>
</bean>
</beans>
7.配置Spring整合Service层的文件 Spring-service.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 https://www.springframework.org/schema/context/spring-context.xsd">
<!--扫描指定包下的注解 若使用了注解 需要配置扫描注解的设置-->
<context:component-scan base-package="com.jee.service" />
<!--将我们所有的业务类 都注册到Spring中 我们创建完类后 第一个要做的事就是把它注册到Spring容器中-->
<bean class="com.jee.service.BookServiceImpl" id="bookServiceImpl">
<!--因为我们使用了@AutoWield注解 所以无需我们手动注入了 它会自动注入
<property name="mapper" ref="bookMapper"/>
-->
</bean>
<!-- 声明式事务配置 (如:设置事务的自动提交 等等) -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
8.配置SpringMVC层 在web.xml中配置DispatcherServlet
<?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">
<!--配置DispatcherServlet-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<!--绑定springmvc的配置文件-->
<param-name>contextConfigLocation</param-name>
<!-- 注意 这里绑定的配置文件不能写springmvc的配置文件 因为有一些类它并没有注册在springmvc.xml这个文件下,
而是在其他配置文件 所以我们需要绑定最终我们整合所有文件的那个xml文件下(applicationContext.xml)
<param-value>classpath:spring-mvc.xml</param-value>-->
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<!--设置启动等级 1表示和容器一起启动-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--乱码过滤-->
<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>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--Session过期时间-->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
9.创建springmvc.xml配置文件
<?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
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 配置SpringMVC -->
<!-- 1.开启SpringMVC注解驱动 -->
<mvc:annotation-driven />
<!-- 2.静态资源默认servlet配置-->
<mvc:default-servlet-handler/>
<!-- 3.扫描配置路径中的所有注解 -->
<context:component-scan base-package="com.jee.controller" />
<!-- 4.配置jsp 显示ViewResolver视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<!--前缀-->
<property name="prefix" value="/WEB-INF/jsp/" />
<!--后缀-->
<property name="suffix" value=".jsp" />
</bean>
</beans>
框架到这里差不多就构建完了 其他的只需要写业务就可以了 以后如果使用ssm开发 把这个框架拿来用就可以了 只需要修改一些配置 大体还是差不多的。
后面发现忘加日志 这里补加log4j日志功能
添加依赖:
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
创建log4j.properties文件
log4j.rootLogger=DEBUG, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
在Mybatis-config.xml文件中设置log4j
<settings>
<setting name="logImpl" value="LOG4J"/>
</settings>
这样就整体的搭建就完成了。