嗨,我想在Java中测试客户端和服务器之间的连接。例如,我想将一个对象从客户端发送到服务器。该对象是我构建的用户。
如果我启动服务器和客户端,我会得到这样的错误:
run:
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:209)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at java.net.SocketInputStream.
异常的完整堆栈跟踪:
ERROR CheckboxTag:86 - Property not found
org.springframework.binding.expression.PropertyNotFoundException: Property not found
at org.springframework.binding.expression.spel.SpringELExpression.getValueType(SpringELExpression.java:103)
at org.springframework.webflow.mvc.view.Bindin
com.qcloud.cos.exception.CosClientException: Unable to decrypt symmetric key from object metadata
at com.qcloud.cos.internal.crypto.ContentCryptoMaterial.cek(ContentCryptoMaterial.java:205)
at com.qcloud.cos.internal.crypto.ContentCryptoMaterial.fromObjectMetadata0(ContentCryptoMaterial.jav
我打电话时出错了
dynamoDBMapper.scan(Person.class, new DynamoDBScanExpression())
java.lang.NullPointerException: null
at com.amazonaws.services.dynamodbv2.model.ScanRequest.setScanFilter(ScanRequest.java)
at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.createScanRequestFromExpressio