报错信息：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project travel: Compilation failure: Compilation failure: [ERROR] /D:/IDEA文件/travel/src/main/java/cn/itcast/travel/util/MailUtils.java:[1,1] 非法字符: '\ufeff' [ERROR] /D:/IDEA文件/travel/src/main/java/cn/itcast/travel/util/MailUtils.java:[1,10] 需要class, interface或enum [ERROR] -> Help 1 [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 For more information about the errors and possible solutions, please read the following articles:

jdk 的pom.xml:

判断：

该文件 D:/IDEA文件/travel/src/main/java/cn/itcast/travel/util/MailUtils.java 的编码错误。

处理：

用notepad++打开MailUtils.java文件，查看编码发现：

编码为utf-8-bom。用notepad++修改编码为utf-8并保存：

问题解决。