Corrupted workspace in Maven Multi-Module Project

[provide a description of the issue]

Environment

• Operating System: Windows
• JDK version: 1.8.0_172
• Visual Studio Code version: 0.25.0-insider
• Java extension version: 0.26.0

Steps To Reproduce

I fiddled with swagger, switched branches and got this:

message: The project was not built since the source file /jdt.ls-java-project/src/[SWAGGERJAVASOURCEPATHSHERE] could not be read

Additional Informations

I got this fixed after doing countless cleans and eclipse:eclipse by removing the vscode workspaceStorage alltogether.
I can't exactly tell you reproduction steps since its now fixed and i forgot to write down steps beforehand... but you should probably know that the language server / vscode-java compiler has issues with copied java source files referencing nonexistent source files in the workspaceStorage

首先检查 Java language server 和 VS Code workspaceStorage 如何处理 Maven 多模块项目、分支切换、与 Swagger 相关的源引用以及不存在的源文件。报告没有可靠的复现步骤，也没有列出文件或测试名称；当过时的源引用不再导致 workspace 损坏时，即可视为完成。