Writes all or part of the given array of bytes into the BLOB starting at the given position, offset, and length; and then returns the number of bytes written.
语法
public int setBytes(long pos,
byte[] bytes,
int offset,
int len)参数
pos
The position (1 based) in the BLOB at which to start writing the data.
bytes
The array of bytes to be written into the BLOB.
offset
The offset in the bytes array where to start reading data from the byte array.
len
The number of bytes to attempt to read from the bytes array into the BLOB.
返回值
An int containing the number of bytes written.
异常
java.sql.SQLException
备注
This setBytes method is specified by the setBytes method in the java.sql.Blob interface.
Data is overwritten starting at the specified position and can over-run the initial length of the BLOB. Specifying a position+1 values will append bytes. Passing a position+2 or greater (or zero or less) value will cause a position error to be thrown. Passing a zero-length byte array will return zero because no bytes were written.