你好:
我这边根据数据字典 动态生产类然后通过map函数对我的json字符串映射到我动态生成的类中；
public static Class<?> getClazz(String className,String cls) throws
Exception {
SimpleCompiler compiler = new SimpleCompiler();
compiler.cook(cls);
compiler.setParentClassLoader(Thread.currentThread().getContextClassLoader());
return compiler.getClassLoader().loadClass("Dc" + className);
}
Class<BaseBean> clazz = (Class<BaseBean>) ClassUtil.getClazz(upClassName,
s);
map函数中 JSONObject.parseObject(value.toString(), clazz);进行转换
程序执行会报找不到我动态生成的类
org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load
user class: DcItcast_accreds
ClassLoader info: URL ClassLoader:
Class not resolvable through given classloader.
at
org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperatorFactory(StreamConfig.java:272)
at
org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:471)
at
org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:393)
at
org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:459)
at
org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:393)
at
org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:155)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:459)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:528)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: DcItcast_accreds
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at
org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:61)
at
org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:74)
at
org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:48)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at
org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.resolveClass(InstantiationUtil.java:78)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1924)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1807)
at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1770)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1595)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2343)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2267)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2125)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1624)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2343)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2267)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2125)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1624)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2343)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2267)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2125)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1624)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:464)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:422)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:576)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:562)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:550)
at
org.apache.flink.util.InstantiationUtil.readObjectFromConfig(InstantiationUtil.java:511)
at
org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperatorFactory(StreamConfig.java:260)
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