Question

当我试图在数据库中插入超过4000个字符的blob时，我遇到了错误提示：有人可以对此提供帮助吗？除了插入数据的过程以外，还有其他方法吗？

错误报告-

  SQL Error: ORA-01704: string literal too long
  01704. 00000 -  "string literal too long"
  *Cause:    The string literal is longer than 4000 characters.
  *Action:   Use a string literal of at most 4000 characters.
           Longer values may only be entered using bind variables

Answer 1

例如，使用setString代替setCharacterStream。当然，假设您已经在使用PreparedStatement：

try (PreparedStatement stmt = conn.prepareStatement(someSql)) {
    String large = String.format("%-4001s", "xxx");
    StringReader reader = new StringReader(large);
    stmt.setCharacterStream(1, reader, large.length());
    stmt.setLong(2, someId);
    int updateCount = stmt.executeUpdate();
}

在Oracle数据库中插入Blob

1 个答案: