JavaWeb項目筆記商城系統(一)項目搭建

一.創建maven

其中e3-parent的pom

<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>cn.e3mall</groupId>
	<artifactId>e3-parent</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>pom</packaging>
	<!-- 集中定義依賴版本號 -->
	<properties>
		<junit.version>4.12</junit.version>
		<spring.version>4.2.4.RELEASE</spring.version>
		<mybatis.version>3.2.8</mybatis.version>
		<mybatis.spring.version>1.2.2</mybatis.spring.version>
		<mybatis.paginator.version>1.2.15</mybatis.paginator.version>
		<mysql.version>5.1.32</mysql.version>
		<slf4j.version>1.6.4</slf4j.version>
		<jackson.version>2.4.2</jackson.version>
		<druid.version>1.0.9</druid.version>
		<httpclient.version>4.3.5</httpclient.version>
		<jstl.version>1.2</jstl.version>
		<servlet-api.version>2.5</servlet-api.version>
		<jsp-api.version>2.0</jsp-api.version>
		<joda-time.version>2.5</joda-time.version>
		<commons-lang3.version>3.3.2</commons-lang3.version>
		<commons-io.version>1.3.2</commons-io.version>
		<commons-net.version>3.3</commons-net.version>
		<pagehelper.version>3.4.2-fix</pagehelper.version>
		<jsqlparser.version>0.9.1</jsqlparser.version>
		<commons-fileupload.version>1.3.1</commons-fileupload.version>
		<jedis.version>2.7.2</jedis.version>
		<solrj.version>4.10.3</solrj.version>
		<dubbo.version>2.5.3</dubbo.version>
		<zookeeper.version>3.4.7</zookeeper.version>
		<zkclient.version>0.1</zkclient.version>
		<activemq.version>5.11.2</activemq.version>
		<freemarker.version>2.3.23</freemarker.version>
		<quartz.version>2.2.2</quartz.version>
	</properties>
	<dependencyManagement>
		<dependencies>
			<!-- 時間操作組件 -->
			<dependency>
				<groupId>joda-time</groupId>
				<artifactId>joda-time</artifactId>
				<version>${joda-time.version}</version>
			</dependency>
			<!-- Apache工具組件 -->
			<dependency>
				<groupId>org.apache.commons</groupId>
				<artifactId>commons-lang3</artifactId>
				<version>${commons-lang3.version}</version>
			</dependency>
			<dependency>
				<groupId>org.apache.commons</groupId>
				<artifactId>commons-io</artifactId>
				<version>${commons-io.version}</version>
			</dependency>
			<dependency>
				<groupId>commons-net</groupId>
				<artifactId>commons-net</artifactId>
				<version>${commons-net.version}</version>
			</dependency>
			<!-- Jackson Json處理工具包 -->
			<dependency>
				<groupId>com.fasterxml.jackson.core</groupId>
				<artifactId>jackson-databind</artifactId>
				<version>${jackson.version}</version>
			</dependency>
			<!-- httpclient -->
			<dependency>
				<groupId>org.apache.httpcomponents</groupId>
				<artifactId>httpclient</artifactId>
				<version>${httpclient.version}</version>
			</dependency>
			<!-- quartz任務調度框架 -->
			<dependency>
				<groupId>org.quartz-scheduler</groupId>
				<artifactId>quartz</artifactId>
				<version>${quartz.version}</version>
			</dependency>
			<!-- 單元測試 -->
			<dependency>
				<groupId>junit</groupId>
				<artifactId>junit</artifactId>
				<version>${junit.version}</version>
				<scope>test</scope>
			</dependency>
			<!-- 日誌處理 -->
			<dependency>
				<groupId>org.slf4j</groupId>
				<artifactId>slf4j-log4j12</artifactId>
				<version>${slf4j.version}</version>
			</dependency>
			<!-- Mybatis -->
			<dependency>
				<groupId>org.mybatis</groupId>
				<artifactId>mybatis</artifactId>
				<version>${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>
			<!-- 連接池 -->
			<dependency>
				<groupId>com.alibaba</groupId>
				<artifactId>druid</artifactId>
				<version>${druid.version}</version>
			</dependency>
			<!-- Spring -->
			<dependency>
				<groupId>org.springframework</groupId>
				<artifactId>spring-context</artifactId>
				<version>${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>
			<!-- JSP相關 -->
			<dependency>
				<groupId>jstl</groupId>
				<artifactId>jstl</artifactId>
				<version>${jstl.version}</version>
			</dependency>
			<dependency>
				<groupId>javax.servlet</groupId>
				<artifactId>servlet-api</artifactId>
				<version>${servlet-api.version}</version>
				<scope>provided</scope>
			</dependency>
			<dependency>
				<groupId>javax.servlet</groupId>
				<artifactId>jsp-api</artifactId>
				<version>${jsp-api.version}</version>
				<scope>provided</scope>
			</dependency>
			<!-- 文件上傳組件 -->
			<dependency>
				<groupId>commons-fileupload</groupId>
				<artifactId>commons-fileupload</artifactId>
				<version>${commons-fileupload.version}</version>
			</dependency>
			<!-- Redis客戶端 -->
			<dependency>
				<groupId>redis.clients</groupId>
				<artifactId>jedis</artifactId>
				<version>${jedis.version}</version>
			</dependency>
			<!-- solr客戶端 -->
			<dependency>
				<groupId>org.apache.solr</groupId>
				<artifactId>solr-solrj</artifactId>
				<version>${solrj.version}</version>
			</dependency>
			<!-- dubbo相關 -->
			<dependency>
				<groupId>com.alibaba</groupId>
				<artifactId>dubbo</artifactId>
				<version>${dubbo.version}</version>
			</dependency>
			<dependency>
				<groupId>org.apache.zookeeper</groupId>
				<artifactId>zookeeper</artifactId>
				<version>${zookeeper.version}</version>
			</dependency>
			<dependency>
				<groupId>com.github.sgroschupf</groupId>
				<artifactId>zkclient</artifactId>
				<version>${zkclient.version}</version>
			</dependency>
			<dependency>
				<groupId>org.apache.activemq</groupId>
				<artifactId>activemq-all</artifactId>
				<version>${activemq.version}</version>
			</dependency>
			<dependency>
				<groupId>org.freemarker</groupId>
				<artifactId>freemarker</artifactId>
				<version>${freemarker.version}</version>
			</dependency>

		</dependencies>
	</dependencyManagement>

	<build>
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<!-- 資源文件拷貝插件 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-resources-plugin</artifactId>
				<version>2.7</version>
				<configuration>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
			<!-- java編譯插件 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.2</version>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
		</plugins>
		<pluginManagement>
			<plugins>
				<!-- 配置Tomcat插件 -->
				<plugin>
					<groupId>org.apache.tomcat.maven</groupId>
					<artifactId>tomcat7-maven-plugin</artifactId>
					<version>2.2</version>
				</plugin>
			</plugins>
		</pluginManagement>
	</build>
</project>

e3-common的pom

<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>
	<parent>
		<groupId>cn.e3mall</groupId>
		<artifactId>e3-parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<groupId>cn.e3mall</groupId>
	<artifactId>e3-common</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<!-- 依賴的jar包 -->
	<dependencies>
		<!-- 時間操作組件 -->
		<dependency>
			<groupId>joda-time</groupId>
			<artifactId>joda-time</artifactId>
		</dependency>
		<!-- Apache工具組件 -->
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-io</artifactId>
		</dependency>
		<dependency>
			<groupId>commons-net</groupId>
			<artifactId>commons-net</artifactId>
		</dependency>
		<!-- Jackson Json處理工具包 -->
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
		</dependency>
		<!-- httpclient -->
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
		</dependency>
		<!-- quartz任務調度框架 -->
		<dependency>
			<groupId>org.quartz-scheduler</groupId>
			<artifactId>quartz</artifactId>
		</dependency>
		<!-- 單元測試 -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<scope>test</scope>
		</dependency>
		<!-- 日誌處理 -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
		</dependency>

	</dependencies>
</project>

e3-manager的pom

<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>
	<parent>
		<groupId>cn.e3mall</groupId>
		<artifactId>e3-parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<groupId>cn.e3mall</groupId>
	<artifactId>e3-manager</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>pom</packaging>
	<dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-common</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
	</dependencies>
	<modules>
		<module>e3-manager-pojo</module>
		<module>e3-manager-dao</module>
		<module>e3-manager-interface</module>
		<module>e3-manager-service</module>
		<module>e3-manager-web</module>
	</modules>
	<!-- 配置tomcat插件 -->
	<build>
		<plugins>
			<plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<configuration>
					<path>/</path>
					<port>8080</port>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

e3-manager-dao

<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>
	<parent>
		<groupId>cn.e3mall</groupId>
		<artifactId>e3-manager</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<artifactId>e3-manager-dao</artifactId>
	<dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-pojo</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<!-- Mybatis -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
		</dependency>
		<dependency>
			<groupId>com.github.miemiedev</groupId>
			<artifactId>mybatis-paginator</artifactId>
		</dependency>
		<dependency>
			<groupId>com.github.pagehelper</groupId>
			<artifactId>pagehelper</artifactId>
		</dependency>
		<!-- MySql -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>
		<!-- 連接池 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
		</dependency>
	</dependencies>
	<!-- 如果不添加此節點mybatis的mapper.xml文件都會被漏掉。 -->
	<build>
		<resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
	</build>
</project>

e3-manager-interface

<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>
	<parent>
		<groupId>cn.e3mall</groupId>
		<artifactId>e3-manager</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<artifactId>e3-manager-interface</artifactId>
	<dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-pojo</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
	</dependencies>
</project>

e3-manager-service

<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>
	<parent>
		<groupId>cn.e3mall</groupId>
		<artifactId>e3-manager</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<artifactId>e3-manager-service</artifactId>
	<dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-dao</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-interface</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jms</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
		</dependency>
	</dependencies>
</project>

e3-manager-pojo

<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>
	<parent>
		<groupId>cn.e3mall</groupId>
		<artifactId>e3-manager</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<artifactId>e3-manager-pojo</artifactId>
</project>

e3-manager-web

<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>
	<parent>
		<groupId>cn.e3mall</groupId>
		<artifactId>e3-manager</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<artifactId>e3-manager-web</artifactId>
	<packaging>war</packaging>
	<dependencies>
		<dependency>
			<groupId>cn.e3mall</groupId>
			<artifactId>e3-manager-service</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>
		<!-- JSP相關 -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jsp-api</artifactId>
			<scope>provided</scope>
		</dependency>
	</dependencies>
</project>

二.實體類
實體類和mybatis映射文件放在dao中

以及pojo文件夾

三.web配置
首先web資源文件夾應有

web配置爲

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	version="2.5">
	<display-name>e3-manager-web</display-name>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
	<!-- 加載spring容器 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring/applicationContext-*.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- 解決post亂碼 -->
	<filter>
		<filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>


	<!-- springmvc的前端控制器 -->
	<servlet>
		<servlet-name>e3-manager</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- contextConfigLocation不是必須的， 如果不配置contextConfigLocation， springmvc的配置文件默認在：WEB-INF/servlet的name+"-servlet.xml" -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring/springmvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>e3-manager</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

四.代碼測試
control層

/**
 * 商品管理Controller
 * <p>Title: ItemController</p>
 * <p>Description: </p>
 * <p>Company: www.itcast.cn</p> 
 * @version 1.0
 */
@Controller
public class ItemController {

	@Autowired
	private ItemService itemService;
	
	@RequestMapping("/item/{itemId}")
	@ResponseBody
	public TbItem getItemById(@PathVariable Long itemId) {
		TbItem tbItem = itemService.getItemById(itemId);
		return tbItem;
	}
}

interface層

import cn.e3mall.pojo.TbItem;

public interface ItemService {

	TbItem getItemById(long itemId);
}

Service層

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import cn.e3mall.mapper.TbItemMapper;
import cn.e3mall.pojo.TbItem;
import cn.e3mall.pojo.TbItemExample;
import cn.e3mall.pojo.TbItemExample.Criteria;
import cn.e3mall.service.ItemService;

/**
 * 商品管理Service
 * <p>Title: ItemServiceImpl</p>
 * <p>Description: </p>
 * <p>Company: www.itcast.cn</p> 
 * @version 1.0
 */
@Service
public class ItemServiceImpl implements ItemService {

	@Autowired
	private TbItemMapper itemMapper;
	
	@Override
	public TbItem getItemById(long itemId) {
		//根據主鍵查詢
		//TbItem tbItem = itemMapper.selectByPrimaryKey(itemId);
		TbItemExample example = new TbItemExample();
		Criteria criteria = example.createCriteria();
		//設置查詢條件
		criteria.andIdEqualTo(itemId);
		//執行查詢
		List<TbItem> list = itemMapper.selectByExample(example);
		if (list != null && list.size() > 0) {
			return list.get(0);
		}
		return null;
	}

}