Java.io.StreamCorruptedException exceptions in the serialization of "Java" objects

Today in the experimental object serialization, see the class inherits the serializable interface, there are two of functions will be automatically executed when the object is serialized and deserialized, respectively, WriteObject and ReadObject.

A simple experiment was conducted to find that the following exception occurred during the execution of the program:

Java.io.StreamCorruptedException:invalid type code:00

At Java.io.ObjectInputStream.readClassDesc (objectinputstream.java:1520)

At Java.io.ObjectInputStream.readEnum (objectinputstream.java:1725)

At Java.io.ObjectInputStream.readObject0 (objectinputstream.java:1347)

At Java.io.ObjectInputStream.skipCustomData (objectinputstream.java:1956)

At Java.io.ObjectInputStream.readSerialData (objectinputstream.java:1918)

At Java.io.ObjectInputStream.readOrdinaryObject (objectinputstream.java:1798)

At Java.io.ObjectInputStream.readObject0 (objectinputstream.java:1350)

At Java.io.ObjectInputStream.defaultReadFields (objectinputstream.java:1990)

At Java.io.ObjectInputStream.readSerialData (objectinputstream.java:1915)

At Java.io.ObjectInputStream.readOrdinaryObject (objectinputstream.java:1798)

At Java.io.ObjectInputStream.readObject0 (objectinputstream.java:1350)

At Java.io.ObjectInputStream.readObject (objectinputstream.java:370)

At Sm.test.TestSerializeDemo.test (testserializedemo.java:59)

At Sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)

At Sun.reflect.NativeMethodAccessorImpl.invoke (nativemethodaccessorimpl.java:57)

At Sun.reflect.DelegatingMethodAccessorImpl.invoke (delegatingmethodaccessorimpl.java:43)

At Java.lang.reflect.Method.invoke (method.java:606)

At Org.junit.runners.model.frameworkmethod$1.runreflectivecall (frameworkmethod.java:45)

At Org.junit.internal.runners.model.ReflectiveCallable.run (reflectivecallable.java:15)

At org.junit.runners.model.FrameworkMethod.invokeExplosively (frameworkmethod.java:42)

At Org.junit.internal.runners.statements.InvokeMethod.evaluate (invokemethod.java:20)

At Org.junit.runners.ParentRunner.runLeaf (parentrunner.java:263)

At Org.junit.runners.BlockJUnit4ClassRunner.runChild (blockjunit4classrunner.java:68)

At Org.junit.runners.BlockJUnit4ClassRunner.runChild (blockjunit4classrunner.java:47)

At Org.junit.runners.parentrunner$3.run (parentrunner.java:231)

At Org.junit.runners.parentrunner$1.schedule (parentrunner.java:60)

At Org.junit.runners.ParentRunner.runChildren (parentrunner.java:229)

At org.junit.runners.parentrunner.access$000 (parentrunner.java:50)

At Org.junit.runners.parentrunner$2.evaluate (parentrunner.java:222)

At Org.junit.runners.ParentRunner.run (parentrunner.java:300)

At Org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run (junit4testreference.java:50)

At Org.eclipse.jdt.internal.junit.runner.TestExecution.run (testexecution.java:38)

At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests (remotetestrunner.java:467)

At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests (remotetestrunner.java:683)

At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run (remotetestrunner.java:390)

At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main (remotetestrunner.java:197)

Feel very strange, the Internet to check some information, is generally related to the socket communication. But my test never used a socket, and the general idea was to write a flag to the stream when it was serialized.

After the troubleshooting found me in the class to be serialized, only implemented the WriteObject method, and did not implement the ReadObject method. When I put the ReadObject method on, I ran the code and found no exception.

Summary: To use

private void WriteObject (Java.io.ObjectOutputStream out) throws IOException

private void ReadObject (Java.io.ObjectInputStream in) throws IOException

These two automated methods, to appear in pairs, or none, or all, otherwise there will be strange anomalies.

Java.io.StreamCorruptedException exceptions in the serialization of "Java" objects