JDBC读取BLOB类型

public String getBlob(String SQL){

Connection conn = null;

PreparedStatement stmt = null;

ResultSet rs = null;

try {

conn = dataSource.getConnection();//c3p0连接池

stmt = conn.prepareStatement(SQL);//SQL: select info from table1 (其中info字段是blob类型)

rs = stmt.executeQuery();

InputStream in = rs.getBinaryStream(1);

ByteArrayOutputStream outStream = new ByteArrayOutputStream();

byte[] data = new byte[4096];

int count = -1;

while((count = in.read(data,0,4096)) != -1)

outStream.write(data, 0, count);

data = null;

String result = new String(outStream.toByteArray(),"utf-8");

} catch (SQLException sqle) {

log.warn("Exception XXX", sqle);

}finally{

conn.close();

stmt.close();

}

}