目录结构
jdbc.properties JDBC配置文件
db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql:///person?characterEncoding=utf-8
db.username=root
db.password=root
log4j.properties 日志配置文件
# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] %m%n
pom.xml 文件的配置
<!-- 集中定义依赖版本号 -->
<properties>
<junit.version>4.10</junit.version>
<spring.version>4.1.3.RELEASE</spring.version>
<mybatis.version>3.2.8</mybatis.version>
<mybatis.spring.version>1.2.2</mybatis.spring.version>
<mysql.version>5.1.32</mysql.version>
<druid.version>1.1.6</druid.version>
<slf4j.version>1.6.4</slf4j.version>
<jstl.version>1.2</jstl.version>
<servlet-api.version>2.5</servlet-api.version>
<jsp-api.version>2.0</jsp-api.version>
<jackson.version>2.4.2</jackson.version>
</properties>
<dependencies>
<!-- 单元测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- 整合spring框架(包含springmvc) 这个jar文件包含springmvc开发时的核心类, 同时也会将依赖的相关jar文件引入进来(spring的核心jar文件也包含在内) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--这个jar文件包含对Spring对JDBC数据访问进行封装的所有类 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 整合mybatis框架 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!-- mysql驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- druid连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!-- 整合log4j -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- Jackson Json处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!--解决对象转json不报406-->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.11</version>
</dependency>
<!-- Servlet/JSP/JSTL -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet-api.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>${jsp-api.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
</dependencies>
web.xml 配置文件(在web-app标签下)
<!--启动项目运行的页面-->
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 配置全站500异常跳转页面 -->
<error-page>
<error-code>500</error-code>
<location>/500.jsp</location>
</error-page>
<!-- 配置全站404跳转页面 -->
<error-page>
<error-code>404</error-code>
<location>/404.jsp</location>
</error-page>
<!-- 配置springmvc, 将所有请求交给springmvc来处理 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springmvc核心配置文件的位置,默认Springmvc的配置文件是在WEB-INF目录下,默认的名字为springmvc-servlet.xml,如果要放在其他目录,则需要指定如下配置:
-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/*.xml</param-value>
</init-param>
</servlet>
<!-- 其中的斜杠(/)表示拦截所有请求(除JSP以外), 所有请求都要经过springmvc前端控制器 -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 乱码处理过滤器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 指定编码集 -->
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<!-- 指定拦截方式为拦截所有请求 -->
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 放行静态资源文件 -->
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.html</url-pattern>
<url-pattern>*.css</url-pattern>
<url-pattern>*.js</url-pattern>
<url-pattern>*.png</url-pattern>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
在resources下创建一个spring文件夹,在spring文件夹中创建两个文件applicationContext.xml、springmvc-config.xml文件
spring
applicationContext.xml(在beans标签下写)
<!-- 1.加载jdbc.properties文件的位置 -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 2.配置druid连接池 ,id是固定值,class是druid连接池类的全路径 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<!-- 配置连接数据库的基本信息 -->
<property name="driverClassName" value="${db.driverClassName}"></property>
<property name="url" value="${db.url}"></property>
<property name="username" value="${db.username}"></property>
<property name="password" value="${db.password}"></property>
</bean>
<!-- 3.整合spring和mybatis框架
将SqlSession等对象的创建交给Spring容器
id值(sqlSessionFactory)是固定值
-->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 1.指定mybatis核心配置文件的位置 -->
<property name="configLocation"
value="classpath:mybatis/mybatis-config.xml"></property>
<!-- 2.配置连接池(数据源) ref指向连接池bean对象的id值 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 3、扫描所有的 XxxMapper.xml映射文件,读取其中配置的SQL语句 -->
<property name="mapperLocations" value="classpath:mybatis/mapper/*.xml"/>
</bean>
<!-- 5、定义mapper接口扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描所有XxxMapper接口,将接口实例的创建交给spring容器 -->
<property name="basePackage"
value="com.demo.dao"/>
</bean>
<!-- 6.配置需要扫描的包(service层):spring自动去扫描 base-package下的类,
如果扫描到的类上有 @Controller、@Service、@Component等注解,
将会自动将类注册为bean(即由spring创建实例)
-->
<context:component-scan
base-package="com.demo.service">
</context:component-scan>
springmvc-config.xml(beans标签下写 )
```java
<!-- 1.配置前端控制器放行静态资源(html/css/js等,否则静态资源将无法访问) -->
<mvc:default-servlet-handler/>
<!-- 2.配置注解驱动,用于识别注解(比如@Controller) -->
<mvc:annotation-driven></mvc:annotation-driven>
<!-- 3.配置需要扫描的包:spring自动去扫描 base-package 下的类,
如果扫描到的类上有 @Controller、@Service、@Component等注解,
将会自动将类注册为bean
-->
<context:component-scan base-package="com.demo.controller">
</context:component-scan>
<!-- 4.配置内部资源视图解析器
prefix:配置路径前缀
suffix:配置文件后缀
-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
在resources下创建一个mybatis文件夹中创建一个mapper文件夹和两个文件mybatis-config.xml、mybatis-config2.xml文件
mybatis
mapper 里创建一个xml文件写sql语句
UserMapper.xml
<?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">
<!--映射文件对应 namespace值为对应接口全路径-->
<mapper namespace="com.demo.dao.UserMapper">
<!--在mapper根据标签内部可以添加很多SQL标签
select:存放查询类型的SQL语句
intsert、delect、update:存放增/删/改类型的SQL语句
-->
<insert id="insertUser">
insert into user values(#{id},#{username},#{password},#{age},#{gender},#{email},#{job},#{sal},#{tel},#{dept})
</insert>
<select id="selectByUsername" resultType="com.demo.pojo.User">
select * from user where username=#{username}
</select>
<select id="selectAll" resultType="com.demo.pojo.User">
select * from user
</select>
<select id="selectUserByUP" resultType="com.demo.pojo.User">
select * from user where username=#{username} and password=#{password}
</select>
</mapper>
mybatis-config.xml配置文件
<?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">
<!-- MyBatis的全局配置文件 -->
<configuration >
<!-- 1.配置开发环境,标签内可以配置多个环境,比如develop,test等 -->
<!-- 1.1.配置事务管理方式:JDBC:将事务交给JDBC管理(推荐) -->
<!-- 1.2.配置数据源,即连接池方式:JNDI/POOLED/UNPOOLED -->
<!-- 2.加载Mapper配置文件,路径以斜杠间隔: xx/xx/../xx.xml -->
<!-- 以上配置, 与Spring整合后, 都由spring管理 -->
</configuration>
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