Question

我需要从Oracle DB中按region_code接收region_name

我在程序中使用Exposed，但收到错误消息

in thread "main" java.lang.AbstractMethodError
at org.jetbrains.exposed.sql.Transaction.closeExecutedStatements(Transaction.kt:181)
at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.inTopLevelTransaction(ThreadLocalTransactionManager.kt:137)
at org.jetbrains.exposed.sql.transactions.ThreadLocalTransactionManagerKt.transaction(ThreadLocalTransactionManager.kt:75)

代码为

object Codes : Table("REGIONS") {
val region_code = varchar("region_code",32)
val region_name = varchar("region_name",32)}

主要乐趣包含

.......
val conn = Database.connect("jdbc:oracle:thin:@//...", driver = "oracle.jdbc.OracleDriver",
    user = "...", password = "...")

transaction(java.sql.Connection.TRANSACTION_READ_COMMITTED, 1, conn) {
        addLogger(StdOutSqlLogger)
        Codes.select { Codes.region_code eq "a" }.limit(1).forEach {
            print(it[Codes.region_name])
        }
    }

Answer 1

AbstractMethodError usually means that you compiled the code with one version of a library, but are running it against a different (incompatible) version. (See for example these questions。）

所以我会仔细检查您的依赖关系＆c。

在Kotlin中使用暴露时，为什么会收到错误消息？

1 个答案: