Maven环境配置（POM文件改中央仓库）

<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>springmvc</groupId>    <artifactId>com.sun4j</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>jar</packaging>    <name>springmvc</name>    <url>http://maven.apache.org</url>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    </properties>    <dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>3.8.1</version>            <scope>test</scope>        </dependency>            </dependencies>    <repositories>        <repository>            <id>maven-net-cn</id>            <name>MavenChinaMirror</name>            <url>http://mvnrepository.com/</url>            <releases>                <enabled>true</enabled>            </releases>            <snapshots>                <enabled>false</enabled>            </snapshots>        </repository>    </repositories>    <pluginRepositories>        <pluginRepository>            <id>maven-net-cn</id>            <name>MavenChinaMirror</name>            <url>http://mvnrepository.com/</url>            <releases>                <enabled>true</enabled>            </releases>            <snapshots>                <enabled>false</enabled>            </snapshots>        </pluginRepository>    </pluginRepositories></project>

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