Java 對Oracle數據庫中的 BLOB類型 插入圖片

package test;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.PrintStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class Test {
	private Connection conn;

	/**
	 * 得到一個數據庫的連接
	 * 
	 * @return 返加Connection對象
	 */
	public Connection getConnection() {
		try {
			Class.forName("oracle.jdbc.driver.OracleDriver");
			conn = DriverManager.getConnection(
					"jdbc:oracle:thin:@localhost:1521:lyx", "scott", "tiger");
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return conn;
	}

	/**
	 * 向表中插入圖片
	 * 
	 * @param path圖片所在的路徑
	 * @return 整形 判斷成功或失敗
	 */
	public int insertImage(String path) throws Exception {
		int i = 0;
		Statement st = null;
		ResultSet rs = null;
		conn=this.getConnection();
		
		conn.setAutoCommit(false);//設置數據庫爲不自動提交，必須的一步
		st = conn.createStatement();
		//先插入一個空對象，這裏我調用了Empty_BLOB()函數
		i = st
				.executeUpdate("insert into image (id,image) values (seq1.nextval,Empty_BLOB())");
		//以行的方式鎖定
		rs = st
				.executeQuery("select image from image where id=(select max(id) from image) for update");
		if (rs.next()) {
			//得到流
			oracle.sql.BLOB blob = (oracle.sql.BLOB) rs.getBlob(1);
			//從得到的低級流構造一個高級流
			PrintStream ps = new PrintStream(blob.getBinaryOutputStream());
			BufferedInputStream bis = new BufferedInputStream(
					new FileInputStream(path));
			byte[] buff = new byte[1024];
			int n = 0;
			//從輸入到輸出
			while ((n = bis.read(buff)) != -1) {
				ps.write(buff, 0, n);

			}
			//清空流的緩存
			ps.flush();
			//關閉流，注意一定要關
			ps.close();
			bis.close();
		}
		rs.close();
		st.close();
		conn.close();
		return i;
	}

	public static void main(String[] args) throws Exception {
		Test test=new Test();
		test.insertImage("e:\\3.jpg");
		System.out.println("OK");


	}

}