这件事也发生在我身上，对此你可能有两种解决办法

If your project consist of some external or project specificdependency in it then you have to manually add it to your M2 repo folder which is located at C:\Users\Mohit.Singh.m2\repository folder and then you have to run mvn eclipse:eclipse and then mvn clean install from the project folder if you do not have any wxternal or project sppecific dependency then you may import the project into eclipse as Existing maven project then right click on project --> GO to maven --> Click on update project a window will appear check the force snapshot download option and hit on OK

对我来说有效的解决方法如下:

将依赖项复制到pom。 < >的依赖 < groupId > org.apache.maven < / groupId > < artifactId > maven-archiver < / artifactId > <版本> 2.5版本> < / < / >的依赖 右击您的项目 选择Maven 选择更新项目 选择“强制更新快照/发布”

尝试执行

mvn -U clean

或者在eclipse中运行> Maven Clean和Maven >更新项目上下文菜单中的快照

创建一个文件delete_lastUpdated_and_remote.sh(使用\n):

#!/bin/bash
find $(cd $(dirname $0); pwd) -name "*.lastUpdated" -type f -print -exec rm -rf {} \;
find $(cd $(dirname $0); pwd) -name "_remote.repositories" -type f -print -exec rm -rf {} \;

把它放在本地Maven repo中，例如%userprofile%\。M2 \repository或~/。M2 /repository，并运行它。

在windows中，你也应该安装Git来运行sh文件。

我也用在jenkins的工作上。

设置。xml代理? 在eclipse中有maven全局\本地配置文件，添加settings.xml

对我来说，我只是在POM.xml文件中添加了下面的xml代码。在我右键单击项目-> Maven ->更新项目后，我检查了快照/发布的强制更新**，一切正常

    <dependencies>
        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/jsp-api -->
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/jstl/jstl -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>