flink SourceFunction could not be inferred. Support for synthetic interfaces, lambdas, and generic

2、The types of the interface org.apache.flink.streaming.api.functions.source.SourceFunction could not be inferred. Support for synthetic interfaces, lambdas, and generic or raw types is limited at this point

原因：数据类型转换失败
解决：SourceFunction , KafkaLog 一定要写，不然会报对象类型不对
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原文链接：https://blog.csdn.net/a123147abc/article/details/120985946