eclipse中maven Compilation failure::[4,29] 程序包cms_mr.job.mrprovider不存在

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project cms_mr: Compilation failure: Compilation failure:

[ERROR] /D:/java/workspace/cms_mr/src/main/java/cms_mr/driver/factory/ReducerProviderFactory.java:[4,29] 程序包cms_mr.job.mrprovider不存在

[ERROR] /D:/java/workspace/cms_mr/src/main/java/cms_mr/driver/factory/JobFieldConfigFactory.java:[4,24] 程序包cms_mr.job.field不存在

[ERROR] /D:/java/workspace/cms_mr/src/main/java/cms_mr/driver/factory/ReducerProviderFactory.java:[15,35] 找不到符号

[ERROR] 符号:   类 ReducerProvider_Change_Times

[ERROR] 位置: 类 cms_mr.driver.factory.ReducerProviderFactory

[ERROR] /D:/java/workspace/cms_mr/src/main/java/cms_mr/driver/factory/JobFieldConfigFactory.java:[14,34] 找不到符号

[ERROR] 符号:   类 JobFieldConfig_Change_Times

[ERROR] 位置: 类 cms_mr.driver.factory.JobFieldConfigFactory

[ERROR] -> [Help 1]

[ERROR] 

[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.

[ERROR] Re-run Maven using the -X switch to enable full debug logging.

[ERROR] 

[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
解决方案：

1. 当前项目：mvn clean

2. Project -->clean-->clean all projects

3. mvn package，能正常编译打包