第04項目：淘淘商城(SpringMVC+Spring+Mybatis) 的學習實踐總結【第一天】

時間 2019-11-11

標籤項目淘淘商城 springmvc+spring+mybatis springmvc spring mybatis 學習實踐總結第一天欄目 MyBatis 简体版

原文原文鏈接

本人作過一年的MATLAB編程和簡單維護過VB和C++的項目。是跟着網上得到的黑馬的Java雙元視頻課來自學入門Java知識和經常使用框架的使用。html

淘淘商城(SpringMVC+Spring+Mybatis) 是傳智播客在2015年9月份錄製的，幾年過去了。因爲視頻裏課上老師敲的代碼和項目筆記有些細節上存在出入，只有根據日誌報錯信息做出適當的調整變動才能跑通項目。爲了方便廣大自學Java同仁的共同進步，我將持續更新這個網絡實戰項目練習的內容，着重指出符合當下開發環境下的內容勘誤修訂。java

https://pan.baidu.com/s/1bptYGAb#list/path=%2F&parentPath=%2Fsharelink389619878-229862621083040mysql

第04項目：淘淘商城(SpringMVC+Spring+Mybatis) 的學習實踐總結【次日】git

開發環境：
Eclipse IDE for Enterprise Java Developers.
Version: 2019-09 R (4.13.0)
Build id: 20190917-1200
OS: Windows 10, v.10.0, x86_64 / win32
Java version: 1.8.0
MySQL Datebase：5.6.45

01.第一天（項目介紹，搭建maven工程）

在Windows10中安裝配置Maven環境變量能夠參考個人CSDN博客 https://blog.csdn.net/qq40993412/article/details/98673049github

4 後臺管理系統工程搭建

4.3 父工程的搭建

父工程應該是一個pom工程。在父工程中定義依賴的jar包的版本信息。Maven插件的版本。web

4.3.3 修改pom文件

Eclipse格式化代碼快捷鍵Ctrl+Shift+F失效redis

使用搜狗中文輸入法會致使Eclipse的格式化快捷鍵被佔用失效，win10切換回英文狀態的美式鍵盤再操做就正常。spring

父工程集中定義依賴版本的sql

pom.xml數據庫

<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.taotao</groupId>
    <artifactId>taotao-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>4.3.25.RELEASE</spring.version>
        <mybatis.version>3.4.6</mybatis.version>
        <mybatis.spring.version>1.3.3</mybatis.spring.version>
        <mybatis.paginator.version>1.2.15</mybatis.paginator.version>
        <mysql.version>5.1.45</mysql.version>
        <slf4j.version>1.7.25</slf4j.version>
        <jackson.version>2.9.10</jackson.version>
        <druid.version>1.1.10</druid.version>
        <httpclient.version>4.5.6</httpclient.version>
        <jstl.version>1.2</jstl.version>
        <servlet-api.version>3.1.0</servlet-api.version>
        <jsp-api.version>2.2</jsp-api.version>
        <joda-time.version>2.9.9</joda-time.version>
        <commons-lang3.version>3.9</commons-lang3.version>
        <commons-io.version>2.6</commons-io.version>
        <commons-net.version>3.6</commons-net.version>
        <pagehelper.version>3.4.2-fix</pagehelper.version>
        <jsqlparser.version>0.9.1</jsqlparser.version>
        <commons-fileupload.version>1.4</commons-fileupload.version>
        <jedis.version>2.7.2</jedis.version>
        <solrj.version>4.10.3</solrj.version>
    </properties>

    <!-- 只定義依賴的版本，並不實際依賴 -->
    <dependencyManagement>
        <dependencies>
            <!-- 時間操做組件 -->
            <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>commons-io</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>
            <!-- 單元測試 -->
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            <!-- 日誌處理 -->
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>${slf4j.version}</version>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>${slf4j.version}</version>
            </dependency>
            <!-- MyBatis持久層框架 -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>${mybatis.spring.version}</version>
            </dependency>
            <dependency>
                <groupId>com.github.miemiedev</groupId>
                <artifactId>mybatis-paginator</artifactId>
                <version>${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>
            <!-- 鏈接池 -->
            <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>
            <!-- JSP相關 -->
            <dependency>
                <groupId>jstl</groupId>
                <artifactId>jstl</artifactId>
                <version>${jstl.version}</version>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>${servlet-api.version}</version>
                <scope>provided</scope>
            </dependency>
            <dependency>
                <groupId>javax.servlet.jsp</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>
        </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>3.1.0</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <!-- java版本編譯插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>

        <pluginManagement>
            <plugins>
                <!-- 配置Tomcat7插件 -->
                <plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
                    <artifactId>tomcat7-maven-plugin</artifactId>
                    <version>2.2</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>

</project>

maven聚合父工程的pom.xml裏應該有<modules>標籤，做爲java初學者容易犯的錯誤就是直接copy講義致使丟失，這個標籤的內容是建立子模塊時IDE自動添加指明瞭繼承它的子模塊的artifactId

    <modules>
        <module>taotao-common</module>
        <module>taotao-manager</module>
    </modules>

taotao-manager的pom.xml

<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>com.taotao</groupId>
        <artifactId>taotao-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>taotao-manager</artifactId>
    <packaging>pom</packaging>
    <!-- 依賴管理 -->
    <dependencies>
        <dependency>
            <groupId>com.taotao</groupId>
            <artifactId>taotao-common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <!-- 配置Tomcat7插件 -->
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <port>8080</port>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <modules>
        <module>taotao-manager-pojo</module>
        <module>taotao-manager-mapper</module>
        <module>taotao-manager-service</module>
        <module>taotao-manager-web</module>
    </modules>
</project>

DAO層的maven一鍵打包編譯build會自動過濾掉忽視src/main/java目錄及子目錄的不是以 .java做爲拓展名的文件。所以後面使用mybatis的逆向工程生成的mapper.xml文件會掃描不到，須要在

taotao-manager-mapper的pom.xml

添加<build>標籤的編譯過濾器配置

<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>com.taotao</groupId>
        <artifactId>taotao-manager</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>taotao-manager-mapper</artifactId>
    <!-- 依賴管理 -->
    <dependencies>
        <dependency>
            <groupId>com.taotao</groupId>
            <artifactId>taotao-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>
        <!-- 鏈接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>
    </dependencies>

    <!-- 若是不添加此節點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>

配置鏈接池的jdbc.driver格式要注意與視頻中的不一致，若是安裝的爲mysql版本8.0.17

MySQL數據庫官方的鏈接驅動下載地址是 https://dev.mysql.com/downloads/connector/j/

MySQL Connector/J 8.0 is highly recommended for use with MySQL Server 8.0, 5.7, 5.6, and 5.5. Please upgrade to MySQL Connector/J 8.0

根據個人驗證，8.0.17版本的mysql鏈接驅動配置，須要聲明serverTimezone時區信息。北京時間UTC+8在mysql技術手冊裏等價於 Asia/Shanghai
jdbc:mysql://localhost:3306/taotao?characterEncoding=utf-8&serverTimezone=Asia/Shanghai

webapp/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <display-name>taotao-manager</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>

</web-app>

5 測試maven工程

taotao-manager-web

log4j.properties 通常習慣上放到的war包工程的resources目錄下。

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=debug, CONSOLE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

5.1 運行的工程

要運行工程，須要運行聚合工程也就是taotao-manager。

5.2 Tomcat插件

在taotao-manager工程的pom文件中添加以下內容：

    <build>
        <!-- 配置插件 -->
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <configuration>
                    <port>8080</port>
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
    </build>

5.3 啓動工程

使用maven命令：

clean tomcat7:run

注意：

一、須要把taotao-parent工程安裝到本地倉庫。Run As：Maven Install

二、須要把taotao-common安裝到本地倉庫。

maven遠程中央倉庫JSP相關的artifactId和視頻課中的有出入，須要在taotao-parent和taotao-manager-web的pom.xml裏做出更改：

    <!-- 集中定義依賴版本號 -->
    <properties>
        <jstl.version>1.2</jstl.version>
        <servlet-api.version>3.1.0</servlet-api.version>
        <jsp-api.version>2.2</jsp-api.version>
    </properties>

        <!-- JSP相關 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <scope>provided</scope>
        </dependency>