在pom文件中增加插件

<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>

然后分别执行

项目中的第三方jar包源码已经关联