解决: maven编译项目报“非法字符: 65279 ”错误

打包maven项目的时候，出现异常：

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.303s
[INFO] Finished at: Fri Sep 09 12:57:08 CST 2016
[INFO] Final Memory: 11M/150M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project common-test-webapp: Compilation failure: Compilation failure:
[ERROR] H:devsourceworkspacecommon-test-webappsrcmainjavacom	estutilGetPy.java:[1,0] 错误: 非法字符: 65279
[ERROR] H:devsourceworkspacecommon-test-webappsrcmainjavacom	estutilGetPy.java:[1,9] 错误: 需要class, interface或enum
[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

打开文件H:devsourceworkspacecommon-test-webappsrcmainjavacom estutilGetPy.java,发现里面并没有什么错误，在eclipse里也没有报错，是什么原因呢？

出现这种错误的原因大概有几种情况：

1、操作系统的原因，操作系统不同，出现了一些不可见字符。

2、某些编辑工具的原因，编辑工具自己默认添加了一些不可见字符。