oracle存储过程传入list

在Oracle数据库中，存储过程是一种预编译的SQL语句集合，它可以执行一系列的操作，存储过程可以提高代码的重用性，减少网络传输量，提高系统的性能，在本篇文章中，我们将介绍如何使用Oracle的存储过程来实现文件上传和保存的功能。

1. 创建表空间和用户

我们需要在Oracle数据库中创建一个表空间和一个用户，用于存储上传的文件。

CREATE TABLESPACE files_ts
DATAFILE 'files_ts.dbf'
SIZE 100M
AUTOEXTEND ON;
CREATE USER files_user IDENTIFIED BY files_user
DEFAULT TABLESPACE files_ts
TEMPORARY TABLESPACE temp;

2. 创建表

接下来，我们需要创建一个表，用于存储上传的文件信息。

CREATE TABLE files (
  id NUMBER PRIMARY KEY,
  file_name VARCHAR2(255) NOT NULL,
  file_type VARCHAR2(50),
  file_size NUMBER,
  upload_date DATE NOT NULL,
  upload_user VARCHAR2(50) NOT NULL
);

3. 创建存储过程

现在，我们可以创建一个存储过程，用于处理文件上传和保存的操作，在这个存储过程中，我们将使用Oracle的BFILE数据类型来存储文件内容。

CREATE OR REPLACE PROCEDURE upload_file (
  p_id IN files.id%TYPE,
  p_file_name IN files.file_name%TYPE,
  p_file_type IN files.file_type%TYPE,
  p_file_size IN files.file_size%TYPE,
  p_upload_date IN files.upload_date%TYPE,
  p_upload_user IN files.upload_user%TYPE,
  p_bfile IN BFILE,
  p_dir IN VARCHAR2
) AS
  l_file UTL_FILE.FILE_TYPE;
BEGIN
  创建目录对象
  l_file := UTL_FILE.FOPEN('DIRECTORY', p_dir, 'W', 'A', 'NONE');
  将文件内容写入BFILE数据类型变量中
  UTL_FILE.PUTF(l_file, p_bfile);
  关闭文件对象
  UTL_FILE.FCLOSE(l_file);
  插入文件信息到表中
  INSERT INTO files (id, file_name, file_type, file_size, upload_date, upload_user)
    VALUES (p_id, p_file_name, p_file_type, p_file_size, p_upload_date, p_upload_user);
END upload_file;
/

4. 调用存储过程上传文件

我们可以调用刚刚创建的存储过程来上传文件，在这个例子中，我们将使用Java程序来调用存储过程。

import java.io.*;
import java.sql.*;
import javax.sql.*;
import org.apache.commons.io.*;
import org.apache.commons.net.*;
import org.apache.commons.net.ftp.*;
import org.apache.commons.net.ftp.FTPClient.*;
import org.apache.commons.net.ftp.FTPReply.*;
import org.apache.commons.net.util.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.time.*;
import java.time.format.*;
import java.time.temporal.*;
import java.time.zone.*;
import java.util.stream.*;
import javafx.util.*; // for JavaFXspecific classes and methods (if applicable)
// ... other import statements as needed ...
public class FileUploader {
 public static void main(String[] args) {
 try { // begin try block to catch exceptions that may occur during execution of the program's logic (if any) ... String fileName = "testFile"; // get the name of the file to be uploaded String fileType = "txt"; // get the type of the file to be uploaded long fileSize = new File(fileName).length(); // get the size of the file to be uploaded Date uploadDate = new Date(); // get the current date and time String uploadUser = "username"; // get the user who is uploading the file String directory = "/path/to/directory"; // get the directory where the file should be stored // create a connection to the database using a DriverManager instance and a connection string String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:orcl"; String user = "username"; String password = "password"; Class.forName(driver); // load the appropriate driver class into memory System.out.println("Connecting to database..."); // display a message to the console while the application is connecting to the database // create a connection object using the DriverManager instance and the connection string DriverManager.setLoginTimeout(30); // set the maximum time in seconds that the DriverManager will wait for a connection to be established DriverManagerDataSource dataSource = new DriverManagerDataSource(); dataSource.setDriverClassName(driver); dataSource.setUrl(url); dataSource.setUsername(user); dataSource.setPassword(password); // create an instance of the FileUploader class that wraps around the DriverManagerDataSource instance FileUploader uploader = new FileUploader(dataSource); // upload the file using the uploader object uploader.uploadFile(1, fileName, fileType, fileSize, uploadDate, uploadUser, new FileInputStream(fileName), directory); } catch (Exception e) { e.printStackTrace(); } } // end try block ...} // end main method ...} // end FileUploader class ...} // end import statements ...```