如何解决java.lang.ClassCastException:ObjectName $$ anon $ 1无法转换为com.fasterxml.jackson.module.scala.ScalaObjectMapper
我正在使用:<jackson.version>2.11.2</jackson.version>
和<scala.version>2.11.12</scala.version>
pom文件:
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-scala_${scala.version.major}</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
我遇到以下错误:
Caused by: java.lang.ClassCastException: com.sample.ObjectName$$anon$1 cannot be cast to com.fasterxml.jackson.module.scala.ScalaObjectMapper
at com.fasterxml.jackson.module.scala.ScalaObjectMapper$class.$init$(ScalaObjectMapper.scala:338)
at com.sample.ObjectName$$anon$1.<init>(ObjectName.scala:22)
在此行(以下更新的导入语句以获取更多信息):
import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.module.scala.DefaultScalaModule
import com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper
val mapper = new ObjectMapper() with ScalaObjectMapper
mapper.registerModule(DefaultScalaModule)
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,false)
def toMap[V](json:String)(implicit m: Manifest[V]): Map[String,Any] = fromJson[Map[String,Any]](json)
def fromJson[T](json: String)(implicit m : Manifest[T]): T = {
mapper.readValue[T](json)
}
def toJson(value: Any): String = {
mapper.writeValueAsString(value)
}
还有其他人遇到同样的问题吗?有相同的建议吗?
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