java.io.StreamCorruptedException：无效的流标头：48656C6C
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java.io.StreamCorruptedException: invalid stream header: 48656C6C
提问by Kanmani
I am using netty client server for communication . The message is received successfully as byte array . When I convert byte array to ObjectInputStream I get the exception
我正在使用 netty 客户端服务器进行通信。消息作为字节数组成功接收。当我将字节数组转换为 ObjectInputStream 时，出现异常
java.io.StreamCorruptedException: invalid stream header: 48656C6C
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:804)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
at nettyClientServer2.PongHandler.messageReceived(PongHandler.java:99)
at org.jboss.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:88)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at org.jboss.netty.handler.execution.ChannelUpstreamEventRunnable.doRun(ChannelUpstreamEventRunnable.java:43)
at org.jboss.netty.handler.execution.ChannelEventRunnable.run(ChannelEventRunnable.java:67)
at org.jboss.netty.handler.execution.OrderedMemoryAwareThreadPoolExecutor$ChildExecutor.run(OrderedMemoryAwareThreadPoolExecutor.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
This is how I convert..
这就是我如何转换..
byte[] ppBytes=pptmp.status;
ObjectInputStream input = null;
input = new ObjectInputStream(new ByteArrayInputStream(ppBytes));
回答by SubOptimal
ppBytesmust hold the bytes of an serialized object. See below a short example.
ppBytes必须保存序列化对象的字节。请参阅下面的简短示例。
byte[] buffer;
try (ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos)) {
oos.writeObject("Hello World");
buffer = bos.toByteArray();
for (int i : buffer) {
System.out.printf("%02X ", i & 0xFF);
}
System.out.println("");
}
try (ByteArrayInputStream bis = new ByteArrayInputStream(buffer);
ObjectInputStream ois = new ObjectInputStream(bis)) {
String input = (String) ois.readObject();
System.out.println("input: " + input);
}
output
输出
// H e l l o W o r l d
AC ED 00 05 74 00 0B 48 65 6C 6C 6F 20 57 6F 72 6C 64
input: Hello World
In the below example the buffer contains the byte representation of the String Hello World. To read those bytes with an ObjectInputStreamwill fail with java.io.StreamCorruptedException: invalid stream header: 48656C6C. As an serialized Stringobject is expected.
在下面的示例中，缓冲区包含 String 的字节表示Hello World。使用 读取这些字节ObjectInputStream将失败java.io.StreamCorruptedException: invalid stream header: 48656C6C。作为String预期的序列化对象。
byte[] buffer;
try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) {
bos.write("Hello World".getBytes(StandardCharsets.ISO_8859_1));
buffer = bos.toByteArray();
for (int i : buffer) {
System.out.printf("%02X ", i & 0xFF);
}
System.out.println("");
}
try (ByteArrayInputStream bis = new ByteArrayInputStream(buffer);
ObjectInputStream ois = new ObjectInputStream(bis)) {
String input = (String) ois.readObject();
System.out.println("input: " + input);
}
output
输出
// H e l l o W o r l d
48 65 6C 6C 6F 20 57 6F 72 6C 64
Exception in thread "main" java.io.StreamCorruptedException: invalid \
stream header: 48656C6C
回答by laune
You can do this by converting a String to a byte[] and back again, to String:
您可以通过将 String 转换为 byte[] 并再次转换为 String 来实现此目的：
String hello = "Hello world";
byte[] bytes = hello.getBytes( "iso-8859-1" ); // or utf-8
// send
String world = new String( bytes, "iso-8859-1" ); // or utf-8
System.out.println( hello );
System.out.println( world );
It is more reliable to read and write (String) objects, which bypasses the encoding/decoding gamble:
读取和写入（字符串）对象更可靠，绕过编码/解码赌博：
String hello = "Hello world";
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream( baos );
oos.writeUTF( hello );
oos.flush();
byte[] bytes = baos.toByteArray();
// send
ByteArrayInputStream bais = new ByteArrayInputStream( bytes );
ObjectInputStream ois = new ObjectInputStream( bais );
String world = ois.readUTF();
