maven常用Java配置

maven国内镜像

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阿里：

https://maven.aliyun.com/mvn/search

官方：

http://repo.maven.apache.org/maven2/

 

三个配置文件优化级

三者的级先是 pom.xml  > /home_dir/.m2/settings.xml > /maven_dir/conf/settings.xml 

 

Eclipse中配置maven

配置全局及用户maven配置文件

 

 

spring mvc

pom.xml

 <!--日志-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.21</version>
    </dependency>
    <!--J2EE-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!--mysql驱动包-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.35</version>
    </dependency>
    <!--springframework-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.2.6.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.2.6.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.2.6.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.2.6.RELEASE</version>
    </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>4.2.6.RELEASE</version>
      </dependency>
    <dependency>
      <groupId>com.github.stefanbirkner</groupId>
      <artifactId>system-rules</artifactId>
      <version>1.16.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.9</version>
    </dependency>
    <!--其他需要的包-->
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.4</version>
    </dependency>

要先添加spring相关jar引用，然后 才可以 项目右键 -->add framework support --> spring mvc

maven仓库

阿里巴巴的镜像仓库, 可以下载大部分的镜像

<repository>

            <id>alimaven</id>

            <name>aliyun maven</name>

            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>

            <layout>default</layout>

            <snapshots>

                <enabled>false</enabled>

            </snapshots>

        </repository>

 

spring仓库

spring官方仓库, 我之前使用spring cloud的时候阿里云仓库无法下载到一些最新jar, 通过该库可以. 并且速度也非常快

<repository>

            <id>spring-milestones</id>

            <name>Spring Milestones</name>

            <url>https://repo.spring.io/libs-milestone</url>

            <snapshots>

                <enabled>false</enabled>

            </snapshots>

        </repository>

log4j2

日志位置

log4j2只支持xml和json两种格式的配置，所以配置log4j.properties是没有作用的。
log4j的2.x版本在默认情况下，系统选择configuration文件的优先级如下

1.classpath下名为log4j-test.json或者log4j-test.jsn文件
2.classpath下名为log4j2-test.xml
3.classpath下名为log4j.json或者log4j.jsn文件
4.classpath下名为log4j2.xml