在maven中引用其他项目作为jar包，pom文件中已成功，但会报出如图的问题，请问怎么解决

不要动eclipse.在控制台执行:mvn eclipse:eclipse,然后刷新eclipse的项目试试.再不行就在pom中的plugins节点内加:

 
<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.9</version>
                <configuration>
                    <additionalProjectnatures>
                        <projectnature>org.eclipse.jdt.core.javanature</projectnature>
                        <!-- 
                        <projectnature>org.eclipse.m2e.core.maven2Nature</projectnature>
                        <projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
                         -->
                    </additionalProjectnatures>
                    <additionalBuildcommands>
                        <buildcommand>org.eclipse.jdt.core.javabuilder</buildcommand>
                        <!-- 
                        <buildcommand>org.eclipse.m2e.core.maven2Builder</buildcommand>
                        <buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
                         -->
                    </additionalBuildcommands>
                </configuration>
            </plugin>

然后再

mvn eclipse:clean 

mvn eclipse:eclipse