我使用此代码从 MySql 数据库中获取 Blob,它工作正常,当我将它用于 sqlite 数据库时,它会抛出 StreamCorruptedException
public static SessionData getIvissSession(BigInteger id) throws IvissDatabaseException {
SessionData sd = null;
PreparedStatement pstmt = null;
Connection con = null;
try {
con = getConnection();
pstmt = con.prepareStatement("SELECT ivissblob FROM iviss_session_table WHERE id =?");
pstmt.setLong(1, Long.parseLong(id.toString()));
ResultSet rs = pstmt.executeQuery();
while (rs.next()) {
byte[] ivissblob = rs.getBytes("ivissblob");
ObjectInputStream objectIn = new ObjectInputStream(new ByteArrayInputStream(ivissblob));
sd = (SessionData) objectIn.readObject();
objectIn.close();
}
} catch (SQLException e) {
throw new IvissDatabaseException(Constants.ERROR_202);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
return sd;
当我使用 SqlLite 数据库时:
java.io.StreamCorruptedException:无效的流标头:java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:797) 处的 java.io.ObjectInputStream.(ObjectInputStream.java:294) 处的 61742E75
为什么会有不同的行为?
这里我如何写入数据库:
public static void insertIntoTable(BigInteger id, SessionData sd, byte[] rtsd, IvissWorker ivissWorker) {
PreparedStatement pstmt = null;
Connection con = null;
try {
con = getConnection();
pstmt = con
.prepareStatement("REPLACE INTO iviss_session_table (id, ivissblob, rtblob, lastaccess) VALUES(?,?,?,?)");
pstmt.setLong(1, Long.parseLong(id.toString()));
pstmt.setObject(2, sd);
pstmt.setObject(3, rtsd);
pstmt.setDate(4, new Date(System.currentTimeMillis()));
pstmt.executeUpdate();
} catch (SQLException e) {
ivissWorker.getIvissWorkerOutputHandler().addError(Constants.ERROR_205, "", DbConfiguration.getDbUri());
} finally {
try {
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
附加信息 sqlite 驱动版本:
<groupId>org.xerial</groupId>
<artifactId>sqlite-jdbc</artifactId>
<version>3.7.2</version>