Maven management of Spring MVC WEB project

配置pom.xml文件
<!-- 设置一些属性值 -->
<properties>
    <spring.version>4.3.8.RELEASE</spring.version>
    <jackson.mapper.version>1.9.13</jackson.mapper.version>
  </properties>
<!-- 设置jar包依赖信息 -->
<dependencies>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.codehaus.jackson/jackson-mapper-asl -->
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>${jackson.mapper.version}</version>
    </dependency>
  </dependencies>
<!-- 设置maven编译器信息 -->
<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source><!--指定jdk版本1.7-->
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
  </build>