pom.xml文件配置显示missing artifact commons-fileupload。。。

Question

我的pom.xml文件提示这样的问题，maven dependence裤里面有几个jar包加载不出来，我就放在了引用库里面。不知道是什么导致的问题，求解答？

以下是库结构以及源码（源码是复制的课程实例，自己只是把包名之类的改了一下）

以下是库结构以及代码。

<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>com.first</groupId>

<artifactId>springmvc</artifactId>

<version>1.0.0-SNAPSHOT</version>

<properties>

<commons-lang.version>2.6</commons-lang.version>

<slf4j.version>1.7.6</slf4j.version>

<spring.version>4.2.4.RELEASE</spring.version>

        <jackson.version>2.5.4</jackson.version>

</properties>

<dependencyManagement>

<dependencies>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-framework-bom</artifactId>

<version>${spring.version}</version>

<type>pom</type>

<scope>import</scope>

</dependency>

</dependencies>

</dependencyManagement>

<dependencies>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

</dependency>

<dependency>

<groupId>commons-lang</groupId>

<artifactId>commons-lang</artifactId>

<version>${commons-lang.version}</version>

</dependency>

<dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-log4j12</artifactId>

<version>${slf4j.version}</version>

<exclusions>

<exclusion>

<artifactId>slf4j-api</artifactId>

<groupId>org.slf4j</groupId>

</exclusion>

</exclusions>

</dependency>

<dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-api</artifactId>

<version>${slf4j.version}</version>

</dependency>

<dependency>

<groupId>javax.servlet</groupId>

<artifactId>servlet-api</artifactId>

<version>2.5</version>

</dependency>

<dependency>

<groupId>commons-fileupload</groupId>

<artifactId>commons-fileupload</artifactId>

<version>1.3.1</version>

</dependency>

<dependency>

<groupId>com.fasterxml.jackson.core</groupId>

<artifactId>jackson-databind</artifactId>

<version>${jackson.version}</version>

</dependency>

</dependencies>

<build>

<plugins>

<plugin>

<groupId>org.eclipse.jetty</groupId>

<artifactId>jetty-maven-plugin</artifactId>

<version>9.2.2.v20140723</version>

</plugin>

</plugins>

</build>

</project>

Answer 1

建议采用开源中国的仓库吧.如果还是不能正常解析,建议到本地仓库中删除缓存试试.