在做项目的时候遇到maven相关配置问题，以此做记录
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Maven相关配置

目录

1.配置阿里镜像

在maven的settiong.xml中配置阿里镜像

<mirrors>
    <mirror>
       <id>nexus-aliyun</id>
       <mirrorOf>central</mirrorOf>
       <name>Nexus aliyun</name>
       <url>http://maven.aliyun.com/nexus/content/groups/public</url>
   </mirror>
 </mirrors>

注意:不要有中文字符

2.配置tomcat7插件

在pom.xml中配置tomcat7插件

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <!-- 指定端口 -->
                    <port>9101</port>
                    <!-- 请求路径 -->
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
    </build>

3.指定jdk、mapper、tomcat7插件

指定jdk版本、mapper映射路径、配置tomcat7插件

<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>shop.tbzj</groupId>
	<artifactId>shop</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>war</packaging>



	<dependencies>
		<!-- 工具类 -->
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.5</version>
		</dependency>
		<!-- servlet API -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
			<scope>provided</scope>
		</dependency>
		<!-- Spring 依赖(context包含:beans/core/aop/expression) -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>4.3.17.RELEASE</version>
		</dependency>

		<!--SpringMVC依赖(springwebmvc包含了:beans/core/aop/expression/context) -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>4.3.17.RELEASE</version>
		</dependency>
		<!-- log4j -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>1.7.25</version>
		</dependency>
		<!-- 整合mybatis start -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.2.8</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>4.3.17.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.1.6</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>5.1.46</version>
		</dependency>
		<!-- Spring 整合MyBatis end -->

		<!-- JUnit的maven依赖 -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>

		<!-- Spring 整合Junit -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>4.2.4.RELEASE</version>
			<scope>test</scope>
		</dependency>
		<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>


	</dependencies>
	<build>
		<!-- 解决mapper和映射文件问题 -->
		<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>
		<plugins>
			<!-- 制定jdk版本 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.2</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
			<!-- war 包类型的时候 mvn package 的时候需要安装maven插件 -->
			<plugin>
				<artifactId>maven-war-plugin</artifactId>
				<version>2.6</version>
				<configuration>
					<failOnMissingWebXml>false</failOnMissingWebXml>
				</configuration>
			</plugin>
			<!-- tomcat7 maven插件 -->
			<plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<version>2.2</version>

				<configuration>
				<!--项目访问路径。当前配置的访问是localhost:9090/, 如果配置是/aa，则访问路径为localhost:9090/aa -->
					<path>/</path> 
					<port>8080</port>
					<uriEncoding>UTF-8</uriEncoding><!-- 非必需项 -->
				</configuration>
			</plugin>
		</plugins>
	</build>

</project>

4.手动把jar包导入maven仓库

Maven 安装 JAR 包的命令是：


mvn install:install-file -Dfile=jar包的位置 -DgroupId=上面的groupId -DartifactId=上面的artifactId -Dversion=上面的version -Dpackaging=jar

例如：
我下载的这个 jar 包是放到了 D:\mvn 目录下(D:\mvn\spring-context-support-3.1.0.RELEASE.jar)
那么我在 cmd 中敲入的命令就应该是：

mvn install:install-file -Dfile=D:\mvn\spring-context-support-3.1.0.RELEASE.jar -DgroupId=org.springframework -DartifactId=spring-context-support -Dversion=3.1.0.RELEASE -Dpackaging=jar

 

CMD界面提示成功后，在本地仓库将看到此jar包，在pom.xml文件中正常引用即可。

5.解决 Maven 无法自动下载依赖的问题

使用 Maven 提供的插件来解决

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-install-plugin</artifactId>
            <version>2.5.2</version>
            <executions>
                <execution>
                    <id>install-external-kaptcha</id>
                    <!-- 触发时机：执行 mvn clean 命令时自动触发插件 -->
                    <phase>clean</phase>
                    <configuration>
                        <!-- 存放依赖文件的位置 -->
                        <file>${project.basedir}/libs/kaptcha-2.3.jar</file>
                        <repositoryLayout>default</repositoryLayout>
                        <!-- 自定义 groupId -->
                        <groupId>com.google.code.kaptcha</groupId>
                        <!-- 自定义 artifactId -->
                        <artifactId>kaptcha</artifactId>
                        <!-- 自定义版本号 -->
                        <version>2.3</version>
                        <!-- 打包方式 -->
                        <packaging>jar</packaging>
                        <!-- 是否自动生成 POM -->
                        <generatePom>true</generatePom>
                    </configuration>
                    <goals>
                        <goal>install-file</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

通过该插件，我们可以在执行 mvn clean 命令时将项目所需要的依赖自动安装进本地仓库

6.解决Maven项目下使用Mybatis时，找不到mapper映射文件

<!-- 如果不添加此节点，mybatis的mapper.xml文件都会被漏掉。 -->
    <build>
        <plugins>
            <!-- 资源文件拷贝插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.7</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

另一种

<resources>
		<resource>
			<directory>src/main/resources</directory>
			<includes>
				<include>**/*.properties</include>
				<include>**/*.xml</include>
			</includes>
			<filtering>false</filtering>
		</resource>
		<resource>
			<directory>src/main/java</directory>
			<includes>
				<include>**/*.xml</include>
			</includes>
			<filtering>false</filtering>
		</resource>
</resources>

7.Spring Boot 使用Maven打包之后运行jar找不到主属性清单的问题

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <!-- 指定启动类的路径-->
                <maimClass>com.itmayiedu.app.EureKaServer</maimClass>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>repackage</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>