java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

Stack Overflow | Zhao Yi | 8 months ago
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Root Cause Analysis

  1. java.io.EOFException

    Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

    at com.mysql.jdbc.MysqlIO.readFully()
  2. MySQL jdbc
    PreparedStatement.executeQuery
    1. com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3119)[mysql-connector-java-5.1.25.jar!/:na]
    2. com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3570)[mysql-connector-java-5.1.25.jar!/:na]
    3. com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3559)[mysql-connector-java-5.1.25.jar!/:na]
    4. com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4110)[mysql-connector-java-5.1.25.jar!/:na]
    5. com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2570)[mysql-connector-java-5.1.25.jar!/:na]
    6. com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2731)[mysql-connector-java-5.1.25.jar!/:na]
    7. com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815)[mysql-connector-java-5.1.25.jar!/:na]
    8. com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)[mysql-connector-java-5.1.25.jar!/:na]
    9. com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322)[mysql-connector-java-5.1.25.jar!/:na]
    9 frames
  3. Hibernate
    ResultSetReturnImpl.extract
    1. org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)[hibernate-core-4.3.11.Final.jar!/:4.3.11.Final]
    1 frame