Maven环境搭建以及配置eclipseMaven环境搭建以及配置eclipse

1.Maven介绍

Apache Maven是个项目管理和自动构建工具，基于项目对象模型（POM）的概念。
作用：完成项目的相关操作，如：编译，构建，单元测试，安装，网站生成和基于Maven部署

2.Maven安装与配置

配置maven环境变量（配置方式跟jdk有些类似）可在我以前的博客配置jdk中找到


更改PATH
%MAVEN_HOME%\bin;%M2_HOME%\bin;

验证是否成功

找到自己解压出来的文件

进入conf中更改settubgs文件

找到localRepository

新建一个自己的仓库，然后改路径名

找到mirrors 加入

Eclipse配置

设置maven安装路径在Window中打Maven

进入Installations点击Add将自己的Maven路径放进去

再点击User Settings 点击第二个Browse将前面更改的settings.xml选择进去

测试maven是否有
新建一个Maven Project工程

点击next

注意将Catalog的选项选择为internal并且中间的选项要选择到最后一个maven_archetype-webapp，然后点击next

Group Id是公司名称
Artifact Id是项目名
然后点击Finish（要联网）会下载东西，创建比较慢

新创建项目会报错
找到pom.xml

 <dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.44</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>4.0.1</version>
			<scope>provided</scope>
		</dependency>

将上提供的代码插入到dependencies中

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.xhh</groupId>
  <artifactId>T237_maven</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>T237_maven Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.44</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>4.0.1</version>
			<scope>provided</scope>
		</dependency>
  </dependencies>
  <build>
    <finalName>T237_maven</finalName>
    <plugins>
        <plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.7.0</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
    </plugins>
  </build>
</project>

保存，会下载东西等
加上

<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.7.0</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>

配置web.xml：

<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_3_1.xsd"
         version="3.1">
  <display-name>Archetype Created Web Application</display-name>
</web-app>

找到当前工程右击找到Properties，再找到Project Facets
把java改成1.8，把Dynamic Web Services前面的勾去掉后点击Apply,在把Dynamic Web Services勾上

点击黄色的部分

点击ok

接下来测试环境搭建好了没有

代码：

package com.xhh.maven;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/mavenTest")
public class MavenServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    	doPost(req, resp);
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    	System.out.println("maven 环境搭建完毕!!!");
    }
}