java读取写入oracle的blob字段工具类

import com.hzunitech.fxgk.sys.model.UtFileData;
import com.jfinal.kit.PathKit;
import com.jfinal.plugin.activerecord.DbKit;
import oracle.sql.BLOB;

import java.io.*;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class FileBlobUtil {

    @SuppressWarnings("deprecation")
    public static int insertBinary(UtFileData utFileData, String filePath) {
        String insertSql = "insert into ut_file_data values(?,?,?,?,?,?)";
        String updateSql = "update ut_file_data set FILE_DATA=? where FILE_ID=?";
        int res = 0;
        try {
//            Connection conn = getConnection();
            Connection conn = DbKit.getConfig().getDataSource().getConnection();
            conn.setAutoCommit(false);

            PreparedStatement pstm = conn.prepareStatement(insertSql);
            pstm.setString(1, utFileData.getFileId());
            pstm.setString(2, utFileData.getFilePath());
            //EMPTY_BLOB和EMPTY_CLOB返回一个空的LOB定位器，
            //可以用来初始化一个LOB变量，或在INSERT或UPDATE语句，
            //初始化LOB列或属性为空。 EMPTY表示LOB初始化，但不填充数据。
            pstm.setBlob(3, oracle.sql.BLOB.empty_lob());
            pstm.setString(4, utFileData.getStatus());
            pstm.setString(5, utFileData.getDataId());
            pstm.setTimestamp(6, utFileData.getAddTime());

            pstm.executeUpdate();
            pstm.close();

            pstm = conn.prepareStatement("select * from ut_file_data where FILE_ID=?");
            pstm.setString(1, utFileData.getFileId());
            ResultSet rs = pstm.executeQuery();
            rs.next();

            BLOB blob = (BLOB) rs.getBlob(3);
            OutputStream os = blob.getBinaryOutputStream();
            FileInputStream fis = new FileInputStream(filePath);
            byte[] buff = new byte[1024];
//            byte[] buff = new byte[fis.available()];
            int len = fis.read(buff);
            while (len != -1) {
                os.write(buff);
                len = fis.read(buff);
            }
            pstm = conn.prepareStatement(updateSql);
            pstm.setBlob(1, blob);
            pstm.setString(2, utFileData.getFileId());
            res = pstm.executeUpdate();

            fis.close();
            os.close();
            conn.commit();
            rs.close();
            pstm.close();
            conn.close();
            if (res > 0) {
                System.out.println("附件上传ut_file_data：success");
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        return res;
    }

    @SuppressWarnings("deprecation")
    public static int readBinary(String fileId) {
        int res = 0;
        try {
            String querySql = "select * from ut_file_data where FILE_ID = ?";
            Connection conn = DbKit.getConfig().getDataSource().getConnection();

            PreparedStatement pstm = conn.prepareStatement(querySql);
            pstm.setString(1, fileId);
            ResultSet rs = pstm.executeQuery();
            if (rs.next()) {
                String filePath = rs.getString(2);
                BLOB fileData = (BLOB) rs.getBlob(3);
                InputStream ins = fileData.getBinaryStream();

                String docPath = PathKit.getWebRootPath() + File.separator + filePath;

                File file = new File(docPath);
                if (!file.getParentFile().exists()) {
                    file.getParentFile().mkdirs();
                }
                if (!file.exists()) {
                    file.createNewFile();
                }
                OutputStream os = new FileOutputStream(file);
                int bytesRead = 0;
                byte[] buffer = new byte[1024];
                while ((bytesRead = ins.read(buffer, 0, 1024)) != -1) {
                    os.write(buffer, 0, bytesRead);
                }
                os.close();
                ins.close();

                rs.close();
                pstm.close();
                conn.close();

                res++;
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return res;
    }

//写入测试

public static void test() {
        String inFile = "C:/Users/zz/Desktop/icon.png";
//        String inFile = "C:/Users/zz/Desktop/111.xls";
//        String inFile = "C:/Users/zz/Desktop/222.txt";

        UtFileData utFileData = new UtFileData();
        String uuid = ValidateUtil.getUUid();

        utFileData.setFileId(uuid);
        utFileData.setFilePath("images/warn/icon.png");
//        utFileData.setFilePath("images/warn/111.xls");
//        utFileData.setFilePath("images/warn/222.txt");
        utFileData.setStatus("true");
        utFileData.setDataId("11122233");
        utFileData.setAddTime(DateFormatUtil.getCurrTimestamp());
//        utFileData.save(uuid);

        FileBlobUtil.insertBinary(utFileData, inFile);
    }

}