向mysql数据库中插入大二进制文件和大文本

@Test
public void save() throws ClassNotFoundException, SQLException,
FileNotFoundException {
try {
Connection conn = jdbcUtils.getConnection();
PreparedStatement pst = conn
.prepareStatement("insert into mytext values(null,?)");
File file = new File("E:\\Java\\Workspaces\\DAO\\a.txt");
FileReader fr = new FileReader(file);
pst.setCharacterStream(1, fr, (int) file.length());
int row = pst.executeUpdate();
if (row != 0) {
System.out.println("插入成功");
}
} catch (Exception e) {
e.printStackTrace();
}

}