不支持 java.util.Date
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java.util.Date is not supported
提问by yeyimilk
I want to write RDDto MYSQL, which RDDcontains java.util.Datetype.
我想写RDD来MYSQL，其中RDD包含java.util.Date的类型。
rdd.map(f=> FeatureData(
f.get("name").toString,
f.get("value").toString.toDouble,
f.get("time").asInstanceOf[Date],
f.get("period").toString))
.toDF()
In this RDDthe key of time's value type is also java.util.Dateand it just get the error of
[See nested exception: java.lang.UnsupportedOperationException: Schema for type java.util.Date is not supported
在这个值类型RDD的键time也是java.util.Date，它只是得到错误
[See nested exception: java.lang.UnsupportedOperationException: Schema for type java.util.Date is not supported
回答by Saqib Rezwan
At first convert java.util.Dateto java.sql.Date. Then run your sql with the data of java.sql.Date. Sample code :
首先将java.util.Date转换为java.sql.Date。然后使用java.sql.Date的数据运行您的 sql 。示例代码：
java.util.Date utilDate = new java.util.Date();
java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime());
Update:AndreHolzner suggested to use java.sql.Timestamp. I did not try it yet, but generally Timestampis better than Date.
更新：AndreHolzner 建议使用java.sql.Timestamp. 我还没有尝试过，但总体Timestamp来说比Date.
