添加阿里云镜像
在.m2/settings.xml中，标签内添加：
<mirror>
<id>nexus-aliyun</id>
<name>Nexus aliyun</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<mirrorOf>*</mirrorOf>
</mirror>
</mirrors>
之后就可以用阿里云提供的jar包了，更新速度还是蛮快的。
Maven repository
网站推荐用mvnrepository.com,访问速度很快，查各类jar包很方便，即使不用maven去这里下载jar包也是极好的。
创建maven项目
对于idea，你可以新建maven web项目，也可以干脆就在已有项目添加maven框架支持。创建后，项目会自动变为maven项目，现在需要处理的就是Lib的问题了。
修改pom.xml
为了方便大家，我直接提供集成了Springmvc,Spring,Hibernate,Jackson,Redis以及一些相关的包的pom文件，具体版本可能需要自己改。我为了方便添加了统一变量。修改pom可以实现jdk的版本控制和添加lib支持。
<?xml version="1.0" encoding="UTF-8"?>
<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>SSH-demo</groupId>
<artifactId>SSH-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<!--以上内容根据自己的项目确定，通常ideak可以自动建立完毕-->
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jdbc.driver.version>5.1.42</jdbc.driver.version>
<org.springframework.version>4.3.8.RELEASE</org.springframework.version>
<com.fasterxml.jackson>2.8.8</com.fasterxml.jackson>
</properties>
<dependencies>
<!--commons依赖-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<!--jackson依赖-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${com.fasterxml.jackson}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${com.fasterxml.jackson}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${com.fasterxml.jackson}</version>
</dependency>
<!--redis依赖-->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>1.13.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.8.3.RELEASE</version>
</dependency>
<!--spring和springmvc依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-websocket</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc-portlet</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument-tomcat</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--Hibernate依赖-->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.10.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.0.Final</version>
</dependency>
<!--其他依赖-->
<dependency>
<groupId>org.jboss</groupId>
<artifactId>jandex</artifactId>
<version>2.0.3.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${jdbc.driver.version}</version>
</dependency>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
</project>
修改项目配置
由于我们用原项目迁移，以及后续添加了很多lib，这时候必须去项目的Artifacts看一下，确认一下lib是否全部添加，如果没有的话，最简单的方法是重新生成Artifacts。