课程链接:SSM框架项目【米米商城】
写代码之前插一句
我用CSDN突然插入不了图片了,无论是截图直接粘贴,还是从编辑器里面放图片,都出现了问题
分析了很久,试了3台电脑,换了好几种浏览器,还重启过好几次,都是同样的错误。
然后才发现是连接了校园网,这几天开放选课系统,我估计校园网有什么特殊处理,我用自己的热点就OK了。
建立数据库管理员表
根据需求来建表
在数据库中写
再传入管理员信息
INSERT INTO admin(a_id,a_name,a_pass) VALUES(1, ' admin' , ' c984aed014aec7623a54f0591da07a85fd4b762d');
成品的商品显示页涉及到以下字段,所以也要在SQL里面建出来
商品类型表和商品表
##########################商品类型表
CREATE TABLE product_type
(
type_id int auto_increment PRIMARY KEY,
type_name varchar(20)
);
####################添加数据
insert into product_type(type_name) values('手机');
insert into product_type(type_name) values('电脑');
insert into product_type(type_name) values('电视');
#############################商品表
create table product_info
(
p_id int auto_increment primary key,
p_name varchar(20),
p_content varchar(200), ##############33商品规格/简介
p_price int, ###############价格
p_image varchar(200), #############图片
p_number int, ########数量
type_id int,
p_date date,
FOREIGN KEY(type_id) REFERENCES product_type(type_id)
);
##添加
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米Note2','双曲面 黑色 6GB内存 64GB闪存',2899,'xmNote2.jpg',500,1,'2018-01-04');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('红米Note5A','5.5英寸 粉色 2GB内存 16GB闪存',699,'hmNote5A.jpg',500,1,'2018-01-05');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('红米Note4X','5.5英寸 绿色 4GB内存 64GB闪存',1299,'hmNote4X.jpg',500,1,'2018-01-06');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('红米4','5英寸 金色 3GB内存 32GB闪存',999,'hm4.jpg',500,1,'2018-01-07');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('红米4X','5英寸 黑色 3GB内存 32GB闪存',899,'hm4X.jpg',500,1,'2018-01-08');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米平板3','7.9英寸 金色 4GB内存 64GB闪存',1499,'xmPad3.jpg',500,2,'2018-01-09');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米Air12','12.5英寸 银色 4GB内存 128GB闪存',3599,'xmAir12.jpg',500,2,'2018-01-18');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米Air13','13.3英寸 银色 8GB内存 256GB闪存',4999,'xmAir13.jpg',500,2,'2018-01-17');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米Pro','15.6英寸 灰色 16GB内存 256GB闪存',6999,'xmPro.jpg',500,2,'2018-01-16');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米电视4','49英寸 原装LG屏 3840×2160 真4K',3299,'xmTV4-49.jpg',500,3,'2018-01-15');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米电视4','55英寸 原装三星屏 3840×2160 真4K',3999,'xmTV4-55.jpg',500,3,'2018-01-13');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米电视4','65英寸 原装三星屏 3840×2160 真4K',8999,'xmTV4-65.jpg',500,3,'2018-01-22');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米电视4A','43英寸 FHD全高清屏 1920*1080',1999,'xmTV4A-43.jpg',500,3,'2018-01-11');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米电视4A','49英寸 FHD全高清屏 1920*1080',2299,'xmTV4A-49.jpg',500,3,'2018-01-21');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米MIX2','全陶瓷 黑色 8GB内存 128GB闪存',4699,'xmMIX2.jpg',500,1,'2018-04-01');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米Note3','全网通 蓝色 6GB内存 64GB闪存',2499,'xmNote3.jpg',500,1,'2018-03-01');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米6','玻璃金属 白色 6GB内存 128GB闪存',2899,'xm6.jpg',500,1,'2018-02-01');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米MAX2','全金属 金色 4GB内存 64GB闪存',1599,'xmMAX2.jpg',500,1,'2018-01-02');
insert into product_info(p_name,p_content,p_price,p_image,p_number,type_id,p_date) values('小米5X','全金属 金色 4GB内存 64GB闪存',1499,'xm5X.jpg',500,1,'2018-01-03');
项目主要步骤
搭建SSM项目的步骤
1)新建Maven工程
2)修改目录,修改pom.xml文件
3)添加SSM框架的所有依赖
4)拷贝jdbc.porperties到resources目录下
5)新建applicationContext_dao.xml文件,进行数据访问层的配置
6)新建applicationContext_service.xml文件,进行业务逻辑层的配置
7)新建springmvc.xml文件,配置springmvc的框架
8)新建SqlMapConfig.xml文件,进行分页插件的配置
9)使用逆向工程生成pojo(实体类)和mapper的文件
10)开发业务逻辑层,实现登录判断
11)开发控制器AdminAction,完成登录处理
12)改造页面,发送登录请求,验证登录
新建一个project,使用maven-archetype-webapp来创建骨架
并补齐没有建立出来的文件夹
由于骨架里面创建的index.jsp以及web.xml版本太老,选择直接删除index.jsp后重建,并补充上几个常用的package
web.xml也删掉重建
在project structure里面重建web.xml
补充pom.xml依赖
上面这部分创建的时候就有
<?xml version="1.0" encoding="UTF-8"?>
<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>BUPT</groupId>
<artifactId>mimissm</artifactId>
<version>1.0</version>
<packaging>war</packaging>
下面这一部分是公用的,直接拷贝
<!-- 集中定义依赖版本号 -->
<properties>
<junit.version>4.12</junit.version>
<spring.version>5.2.5.RELEASE</spring.version>
<mybatis.version>3.5.1</mybatis.version>
<mybatis.spring.version>1.3.1</mybatis.spring.version>
<mybatis.paginator.version>1.2.15</mybatis.paginator.version>
<mysql.version>8.0.22</mysql.version>
<slf4j.version>1.6.4</slf4j.version>
<druid.version>1.1.12</druid.version>
<pagehelper.version>5.1.2</pagehelper.version>
<jstl.version>1.2</jstl.version>
<servlet-api.version>3.0.1</servlet-api.version>
<jsp-api.version>2.0</jsp-api.version>
<jackson.version>2.9.6</jackson.version>
</properties>
<dependencies>
<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Mybatis -->
<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>
<dependency>
<groupId>com.github.miemiedev</groupId>
<artifactId>mybatis-paginator</artifactId>
<version>${mybatis.paginator.version}</version>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- JSP相关 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<scope>provided</scope>
<version>${jsp-api.version}</version>
</dependency>
<!-- Jackson Json处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
</dependencies>
<!-- 插件配置 -->
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
</plugins>
<!--识别所有的配置文件
否则编译后不会添加到对应地方-->
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
最后一定要以结尾
</project>
配置属性文件
在resources中创建jdbc.properties
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mimissm?useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true
jdbc.username=root
jdbc.password=333
以及一个SqlMapperConfig
完成分页插件拦截的注册
<?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>
<!--分页插件的拦截-->
<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor">
</plugin>
</plugins>
</configuration>
还需要配置applicationContext文件
之前我们做都是将所有的配置写在一起
这里给他弱耦合
分开写
先写applicationContext_dao
<?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">
<!--配置属性文件,读取jdbc.properties-->
<context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
<!--配置数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- 创建sqlsessionFactoryBean-->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 配置数据源-->
<property name="dataSource" ref="dataSource"></property>
<!-- 配置mybatis的核心配置文件-->
<property name="configLocation" value="classpath:SqlMapConfig.xml"></property>
<!-- 配置实体类-->
<property name="typeAliasesPackage" value="BUPT.pojo"></property>
</bean>
<!-- 创建mapper文件扫描器-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="BUPT.mapper"></property>
</bean>
</beans>
再写applicationContext_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" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
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 http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd">
<!--配置业务逻辑层,给spring扫描识别该包下的所有类,使用注解方式@service,Spring负责创建对象,并添加依赖-->
<context:component-scan base-package="BUPT.service"></context:component-scan>
<!--设置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 添加事务的切面-->
<tx:advice id="myadvice" transaction-manager="transactionManager">
<!-- 带以下名字的要注意-->
<tx:attributes>
<!-- 查询的时候设置为只读,防止增删改-->
<tx:method name="*select*" read-only="true"/>
<tx:method name="*find*" read-only="true"/>
<tx:method name="*search*" read-only="true"/>
<tx:method name="*get*" read-only="true"/>
<!-- 实现增删改的时候,要支持事务-->
<tx:method name="*insert*" propagation="REQUIRED"/>
<tx:method name="*save*" propagation="REQUIRED"/>
<tx:method name="*add*" propagation="REQUIRED"/>
<tx:method name="*delete*" propagation="REQUIRED"/>
<tx:method name="*remove*" propagation="REQUIRED"/>
<tx:method name="*clear*" propagation="REQUIRED"/>
<tx:method name="*update*" propagation="REQUIRED"/>
<tx:method name="*change*" propagation="REQUIRED"/>
<tx:method name="*modify*" propagation="REQUIRED"/>
<tx:method name="*set*" propagation="REQUIRED"/>
<tx:method name="*" propagation="SUPPORTS"/>
</tx:attributes>
</tx:advice>
<!-- 配置切入点,使用切入点表达式否则上面会拦截很多部分,实现功能增强了-->
<!-- 指定在service目录下所有的类 以及这些类的所有方法, 切入也就是切入整个业务逻辑层-->
<aop:config>
<aop:pointcut id="mypointcut" expression="execution(* BUPT.service.*.*(..))"/>
<aop:advisor advice-ref="myadvice" pointcut-ref="mypointcut"/>
</aop:config>
</beans>
继续配置SpringMVC.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"
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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--声明组件扫描器,指定控制器的包-->
<context:component-scan base-package="BUPT.controller"/>
<!--声明 springmvc框架中的视图解析器, 帮助开发人员设置视图文件的路径-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--前缀:视图文件的路径-->
<property name="prefix" value="/admin/"/>
<!--后缀:视图文件的扩展名-->
<property name="suffix" value=".jsp"/>
</bean>
<!--设置文件上传核心组件-->
<bean id="commonsMultipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
</bean>
<!-- 跟之前一样,一定要选mvc的driven-->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
这之后配置web.xml
<?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">
配置过滤器
<filter>
<filter-name>encode</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<!-- 配置哪些参数,跳转到CharacterEncodingFilter源码里面就能知道-->
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encode</filter-name>
<!-- 所有请求都给他处理一下-->
<url-pattern>/*</url-pattern>
</filter-mapping>
SpringMVC框架注册
<!--SpringMVC框架注册-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--自定义springmvc读取的配置文件的位置-->
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- 这里一定得写上classpath,因为maven进行compile后,会生成target文件和对应的classes文件夹-->
<!-- 这个文件里面的classpath指的是编译后的根路径-->
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<!-- 这里之前用的*.do,与命名规范有关,之前经常是otherdo somedo,这里后面可能是XXaction-->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
注册spring框架
<!-- 注册spring框架-->
<!-- 便于启动时加载resources下写的xml文件-->
<listener>
<listener-class>org.springframework.web.context.ContextLoader</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<!-- 两个一起注册,这样两个xml文件相互引用的部分就不会出错,
如果不配置,除非导包,否则互相引用不上,但导包可能带来新的问题-->
<param-value>classpath:applicationContext_*.xml</param-value>
</context-param>
</web-app>
结束时间:2022-03-02