【求教】运行drozer时，提示“drozer could not find or compile a required exten...

getery

每次运行drozer中的“run scanner.provider.findruis -a com.mwr.example.sieve”
总是提示“drozer could not find or compile a required extension library”
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dz> run scanner.provider.finduris -a com.mwr.example.sieve
Scanning com.mwr.example.sieve...
C:\Java\jdk1.8.0_77\bin\javac.exe -cp C:\drozer\lib\drozer\lib\android.jar ZipUtil.java
C:\drozer\lib\drozer\lib\dx.bat --dex --output 4a78a7a38b67b985beccf6efac92375b.apk ZipUtil.class

trouble processing:
bad class file magic (cafebabe) or version (0034.0000)
...while parsing ZipUtil.class
...while processing ZipUtil.class
1 warning
no classfiles specified
drozer could not find or compile a required extension library

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环境变量都配置正确了的

seagull1985

drozer是什么东西？我头发长。。。