Oracle数据库插入图片和读取图片

package com.basicSql.scroll_page;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.basicSql.connUtil.Conndb;

public class SavePic {
	public static Connection conn = null;
	public static PreparedStatement pStmt = null;

	/**
	 * 数据库中加入图片等文件
	 */
	public static void InsertPic() {
		String sql = "insert into teacher(id,name,photo) values(teacher_seq.nextval,?,?)";
		try {
			conn = Conndb.connOracle();
			pStmt = conn.prepareStatement(sql);

			pStmt.setString(1, "signma");

			// 数据库插入图片/word/excel等
			File f = new File("src/pic.jpg");
			FileInputStream fis = new FileInputStream(f);
			pStmt.setBinaryStream(2, fis, (int) f.length());

			int n = pStmt.executeUpdate();
			System.out.println(n + "条记录插入");
		} catch (SQLException e) {
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} finally {
			Conndb.pStmtClose(pStmt);
			Conndb.closeConn(conn);
		}
	}

	/**
	 * 从数据库中取出图片等文件
	 */
	public static void getPic() {
		String sql = "select id,name,photo from teacher where id=?";
		try {
			conn = Conndb.connOracle();
			pStmt = conn.prepareStatement(sql);

			pStmt.setInt(1, 2);

			ResultSet rs = pStmt.executeQuery();
			if (rs.next()) {
				FileOutputStream fos = new FileOutputStream(new File("abc.jpg"));
				InputStream is = rs.getBinaryStream("photo");

				byte[] buffer = new byte[4 * 1024];
				int length = 0;
				while ((length = is.read(buffer)) != -1) {
					fos.write(buffer, 0, length);
				}
				fos.flush();
				fos.close();
				is.close();
			}

		} catch (SQLException e) {
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			Conndb.pStmtClose(pStmt);
			Conndb.closeConn(conn);
		}
	}
}