Javadoc generation fails due to improper encoding

[lightning-L]

Task :api
C:\Users\Documents\spring-source-code\spring-framework\spring-web\src\main\java\org\springframework\http\codec\multipart\DefaultMultipartMessageReader.java:255: error: unmappable character for encoding GBK
builder.append("鈵?");
^
C:\Users\Documents\spring-source-code\spring-framework\spring-web\src\main\java\org\springframework\http\codec\multipart\DefaultMultipartMessageReader.java:258: error: unmappable character for encoding GBK
builder.append("鈵?");
^
2 errors

Task :api FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':api'.

Javadoc generation failed. Generated Javadoc options file (useful for troubleshooting): 'C:\Users\liao_\Documents\spring-source-code\spring-framework\build\tmp\api\javadoc.options'

[sbrannen]

@TianlinLIAO, did you run into this when building against master?

[sbrannen]

I have been able to reproduce the problem by setting options.encoding = "GBK" for the api task in docs.gradle.

Changing that to options.encoding = "UTF-8" should therefore fix the issue.

[sbrannen]

This has been addressed in the build for 5.1.9 and master (i.e., 5.2.0).

[lightning-L]

@TianlinLIAO, did you run into this when building against master?

Yes, I am building against master branch yesterday.

[lightning-L]

This has been addressed in the build for 5.1.9 and master (i.e., 5.2.0).

Thank you so much!