java - Eclipse 在项目中显示错误，但我找不到它们

Question

我正在尝试运行我的项目，但 Eclipse 说我有错误，但没有错误，只是项目名称处有一个红十字。我尝试清理 Maven 项目。下面是问题。

    [INFO] Scanning for projects...
    [INFO]                                                                         
    [INFO] ------------------------------------------------------------------------
    [INFO] Building E2Eproject 1.0-SNAPSHOT
    [INFO] ------------------------------------------------------------------------
    [INFO] 
    [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ E2Eproject ---
    [INFO] Deleting C:\Users\DTMLLUAdminUser\E2Eproject\target
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD FAILURE
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 1.856 s
    [INFO] Finished at: 2019-02-11T14:42:55-08:00
    [INFO] Final Memory: 5M/155M
    [INFO] ------------------------------------------------------------------------
    [ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project E2Eproject: Failed to clean project: Failed to delete C:\Users\DTMLLUAdminUser\E2Eproject\target\test-classes -> [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 `enter code here`read the following articles:
    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
    

Answer 1

Failed to delete C:\Users\DTMLLUAdminUser\E2Eproject\target\test-classes

这通常是由于应用程序仍在运行(在 cmd、eclipse 或 Web 浏览器中)，目标文件夹内的文件被锁定

一些值得尝试的事情:

1. 如果应用程序正在 Eclipse 中运行，请停止该应用程序

2. 如果应用程序在命令提示符下运行，请使用 ctrl+c 终止该应用程序

3. 关闭运行应用程序的所有浏览器

4. 如果您已关闭网络浏览器，请转到任务管理器并确保后台没有任何运行程序

完成上述所有操作后，尝试再次 mvn clean 项目

如果您仍然看到相同的异常，请尝试重新启动计算机。这将保证目标文件夹上的锁定被删除，并且您应该能够再次清理项目