Maven学习（二）

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Maven配置文件相关配置

Maven笔记

在main和test目录中分别添加下面两段Java代码

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package com.xiaoguan.maven;
public class Calculator{
	public int sum(int i,int j){
		return i+j;
	}
}
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package com.xiaoguan.maven;
import org.junit.Test;
import com.xiaoguan.maven.Calculator;
import static org.junit.Assert.*;
public class CalculatorTest{
	@Test
	public void testSum(){
		Calculator calculator= new Calculator();
		int actualResult=calculator.sum(5,3);
		int expectedResult=8;
		assertEquals(expectedResult,actualResult);
        System.out.print("小关");
	}
}

和maven构建相关的命令要在pom.xml目录下执行。

  1. mvn clean删除target目录
  2. mvn compile主程序编译目录
  3. mvn test-compile测试程序编译目录
  4. mvn test测试程序（重新自动编译）
  5. mvn package打成包放target目录（只有主体程序打包没有测试程序）
  6. mvn install将打好的包存入本地仓库中
  7. mvn archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-webapp -DarchetypeVersion=1.4生成web工程。servlet测试代码为
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package com.xiaoguan.maven;
	
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletException;
import java.io.IOException;
	
public class HelloServlet extends HttpServlet{
	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		response.getWriter().write("hello maven web");
		
	}
	
}

注册文件

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 <servlet>
<servlet-name>helloServlet</servlet-name>
<servlet-class>com.atguigu.maven.HelloServlet</servlet-class>
 </servlet>
 <servlet-mapping>
<servlet-name>helloServlet</servlet-name>
<url-pattern>/helloServlet</url-pattern>
 </servlet-mapping>

jsp测试代码为

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<html>
<body>
<h2>Hello World!</h2>
<a href="helloServlet">Access Servlet</a>
</body>
</html>

  1. mvn dependency:list依赖列表

  2. 配置依赖排除

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    <exclusions>
    	<exclusion>
    		<!--指定坐标时不需要指定version,写在dependency中-->
    		<groupId>commons-logging</groupId>
    		<artifactId>commons-logging</artifactId>
    	</exclusion>
    </exclusions>

  3. <packaging>pom</packaging>只有打包方式为pom的工程才能为父工程

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    <?xml version="1.0" encoding="UTF-8" standalone="no"?>
    <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.xiaoguan.maven</groupId>
            
      
      
      <artifactId>pro03-maven-parent</artifactId>
            
      
      
      <version>1.0-SNAPSHOT</version>
            
      
      
      <packaging>pom</packaging>
            
      
      
      <name>pro03-maven-parent</name>
            
      
      
      <url>http://maven.apache.org</url>
            
      
      
      <properties>
                    
        
        
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <a>4.0.0</a>
                  
      
      
      </properties>
            
      
      
      <dependencies>

      </dependencies>
          
      
      
      <modules>
                  
        
        
        <module>pro04-maven-moudle</module>
                  
        
        
        <module>pro05-maven-moudle</module>
              
        
        <module>pro06-maven-moudle</module>
          
      </modules>
      <dependencyManagement>
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-core</artifactId>
    			<version>4.0.0.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-beans</artifactId>
    			<version>4.0.0.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context</artifactId>
    			<version>4.0.0.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-expression</artifactId>
    			<version>4.0.0.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-aop</artifactId>
    			<version>4.0.0.RELEASE</version>
    		</dependency>
    	</dependencies>
      </dependencyManagement>
        

    </project>

    父工程有的可以不写依赖版本但其他还是要写，写版本号以子工程中为准。${a}可以放在version里做到一处修改处处修改,前提要在<properties>中声明

    1. mvn clean install -Dmaven.test.skip=true-D表示要附加命令的参数，此例子表示执行参数过程中跳过测试。