1.pom文件
<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.yiibai</groupId>
<artifactId>webproject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging><properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties><dependencies>
<!-- Servlet API -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency><dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.19.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.2.RELEASE</version>
</dependency><dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency><dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency><dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.18</version>
</dependency><dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency><dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.5.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.4</version>
</dependency>
</dependencies><build>
<sourceDirectory>src/main/java</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin><!-- Embedded Apache Tomcat required for testing war -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
2spring配置文件
applicationContext.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"><!-- 加载配置文件 -->
<context:property-placeholder location="classpath:jdbc.properties" /><!-- 配置数据源 -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--加载 MyBatis 的配置文件-->
<property name="configLocation" value="classpath:mappers/SqlMapConfig.xml" />
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
</bean><!-- 配置Mapper扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描包路径,如果需要扫描多个包中间用半角逗号隔开 -->
<property name="basePackage" value="com.zh.mapper"/>
<!-- 这边不能使用ref="sqlSessionFactory"原因是因为上面加载配置文件导致这边引用会报错 -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
</beans>
3springmvc.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"><bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />
<context:component-scan base-package="com.zh" />
<!-- 配置视图解析器 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 使用前缀和后缀 -->
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 配置注解的处理器映射器和处理器适配器 -->
<mvc:annotation-driven/>
<!-- <mvc:interceptors>
直接定义拦截所有请求
<bean class="com.wxisme.ssm.interceptor.IdentityInterceptor"></bean>
<mvc:interceptor> 拦截所有路径的请求 包括子路径 <mvc:mapping path="/**"/> <bean
class="com.wxisme.ssm.interceptor.IdentityInterceptor"></bean> </mvc:interceptor>
</mvc:interceptors>
--><!-- 定义全局异常处理器 -->
<!-- 只有一个全局异常处理器起作用 -->
<!-- <bean id="exceptionResolver" class="com.wxisme.ssm.exception.OverallExceptionResolver"></bean> --><!--配置上传文件数据解析器 -->
<!-- <bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize">
<value>9242880</value>
</property>
</bean> -->
<!-- 自定义参数类型绑定 -->
<!-- <bean id="conversionService"
class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters">
<list>
日期类型绑定
<bean class="com.wxisme.ssm.controller.converter.DateConverter" />
</list>
</property>
</bean> -->
</beans>
4。mapper的总配置SqlMapConfig.xml
<?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><!-- settings -->
<settings>
<!-- 打开延迟加载的开关 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 将积极加载改为消极加载(即按需加载) -->
<setting name="aggressiveLazyLoading" value="false"/>
<!-- 打开全局缓存开关(二级缓存)默认值就是 true -->
<setting name="cacheEnabled" value="true"/>
</settings><!-- 别名定义 -->
<typeAliases>
<package name="com.zh.dto"/>
</typeAliases><!-- 加载映射文件 -->
<mappers>
<!-- 通过 resource 方法一次加载一个映射文件 -->
<!-- <mapper resource="sqlmap/UserMapper.xml"/>
--> <!-- 批量加载mapper -->
<package name="com.zh.mapper"/>
</mappers>
</configuration>
5.
<?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="cart">
<!-- <insert id="addcart" parameterType="cart"
keyColumn="id"
keyProperty="id"
useGeneratedKeys="true" >
INSERT INTO cart(id, name, details, prices, number, discountprice, goodpic) VALUES
(#{id}, #{name}, #{details}, #{prices}, #{number}, #{discountprice}, #{goodpic});
</insert>
单行查询
<select resultType ="">
查询功能的标签
resultType : 返回结果的数据类型,和接口对应方法的返回类型必须一致
<select id="selectByPrimaryKey" parameterType="Integer" resultType="User">
#{对象属性} ,主键理论上任何值都可以 #{abc},#{xxx},可以不用对象属性
select * from user where id = #{id}
</select>
多行查询
无论单行或者多行查询,返回的数据类型都是 对应 pojo 对应的对象类型
<select id="showcart" resultType="cart">
select * from cart
</select>
删除操作
<delete id="deleteByPrimaryKey" parameterType="Integer">
delete from user where id = #{id}
</delete>
修改操作
<update id="updateByPrimaryKey" parameterType="User">
固定语义的sql语句
update user set name = #{name},password = #{password},age = #{age} where id = #{id}
</update> -->
<select id="showcart" resultType="cart">
select * from cart
</select>
</mapper>
6,dao
package com.zh.dao.impl;
import java.util.List;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.stereotype.Repository;import com.zh.dao.CartDao;
import com.zh.dto.Cart;
@Repository
public class CartDaoImpl implements CartDao {
private SqlSessionTemplate sqlSession;
public void addcart(Cart cart) {
}public List<Cart> showcart() {
return sqlSession.selectList("cart.showcart");
}}