把本地硬盘里的图片存储到oracle数据库里blob的实现

转载自：http://heisetoufa.iteye.com/blog/227243

 

关键字: 图片 上传 数据库

数据库是oracle，字段是blob,代码语言是java，上传的可以是图片也可以是其他大文件，显示在浏览器里和保存在硬盘上不写在这篇文章里，写在下篇里

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

import javax.swing.JFileChooser;

import oracle.jdbc.driver.OracleConnection;

public class Write
{
 public static void main(String[] args)
 {
  try {
   Writewatdb = new Write();
   watdb.sendToDb();
  } catch (SQLException e) {
   e.printStackTrace();
  } catch (ClassNotFoundException e) {
   e.printStackTrace();
  }
 }
 Connection conn;
 Statement stmt;

 ResultSet rs;
 int bufferSize;

 public Write() throws SQLException, ClassNotFoundException
 {
  String connectString;
  Class.forName("oracle.jdbc.driver.OracleDriver");
  connectString = "jdbc:oracle:thin:@192.168.1.134:1521:zhpt";
  conn = (OracleConnection)
  DriverManager.getConnection(connectString, "dzjc","dzjc");

  stmt = conn.createStatement();
 }
 public void sendToDb()
 {
        int amount = 0;
  OutputStream out = null;
  BufferedInputStream in = null;
  JFileChooser chooser = new JFileChooser();
  int returnVal = chooser.showOpenDialog(null);
  if (returnVal == JFileChooser.APPROVE_OPTION)
  {
   pathname = chooser.getSelectedFile().getAbsolutePath();
   name = chooser.getSelectedFile().getName();
   chooser = null;
  }
  else
  {
   System.out.println("没有找到文件！");
   System.out.println("程序非正常结束...");
   return;
  }
  try
  {
   conn.setAutoCommit(false);
   stmt.executeUpdate("insert into dzjc_img(img) values (empty_blob())");
   rs = stmt.executeQuery("select img from dzjc_img for update");
   if (rs.next())
   {
    Blob blob = rs.getBlob("img");
    out = ( (oracle.sql.BLOB) blob).getBinaryOutputStream();
    bufferSize = ( (oracle.sql.BLOB) blob).getBufferSize();
    in = new BufferedInputStream(new FileInputStream(pathname), bufferSize);

    byte[] b = new byte[bufferSize];
    int count = in.read(b, 0, bufferSize);
    while (count != -1)
    {
     out.write(b, 0, count);
     amount += count;
     System.out.println("处理了" + amount + "字节.");
     count = in.read(b, 0, bufferSize);
     System.out.println("处理了" + amount + "字节,成功.");
    }
    out.close();
    out = null;
    in.close();
    in = null;
    conn.commit();
   }
  }
  catch (Exception e)
  {
   e.printStackTrace();
   try
   {
    conn.rollback();
   }
   catch (Exception ignored) {}
  }
  finally
  {
   if (out!=null) try{out.close();} catch(Exception igored){}
   if (in!=null) try{in.close();} catch(Exception igored){}
  }
 }
}

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

import javax.swing.JFileChooser;

import oracle.jdbc.driver.OracleConnection;

public class Write
{
 public static void main(String[] args)
 {
  try {
   Writewatdb = new Write();
   watdb.sendToDb();
  } catch (SQLException e) {
   e.printStackTrace();
  } catch (ClassNotFoundException e) {
   e.printStackTrace();
  }
 }
 Connection conn;
 Statement stmt;
 
 ResultSet rs;
 int bufferSize;
 
 public Write() throws SQLException, ClassNotFoundException 
 {
  String connectString;
  Class.forName("oracle.jdbc.driver.OracleDriver");
  connectString = "jdbc:oracle:thin:@192.168.1.134:1521:zhpt";
  conn = (OracleConnection)
  DriverManager.getConnection(connectString, "dzjc","dzjc");
 
  stmt = conn.createStatement();
 }
 public void sendToDb() 
 {
        int amount = 0;
  OutputStream out = null;
  BufferedInputStream in = null;
  JFileChooser chooser = new JFileChooser();
  int returnVal = chooser.showOpenDialog(null);
  if (returnVal == JFileChooser.APPROVE_OPTION)
  {
   pathname = chooser.getSelectedFile().getAbsolutePath();
   name = chooser.getSelectedFile().getName();
   chooser = null;
  }
  else
  {
   System.out.println("没有找到文件！");
   System.out.println("程序非正常结束...");
   return;
  }
  try
  {
   conn.setAutoCommit(false);
   stmt.executeUpdate("insert into dzjc_img(img) values (empty_blob())");
   rs = stmt.executeQuery("select img from dzjc_img for update");
   if (rs.next()) 
   {
    Blob blob = rs.getBlob("img");
    out = ( (oracle.sql.BLOB) blob).getBinaryOutputStream();
    bufferSize = ( (oracle.sql.BLOB) blob).getBufferSize();
    in = new BufferedInputStream(new FileInputStream(pathname), bufferSize);
 
    byte[] b = new byte[bufferSize];
    int count = in.read(b, 0, bufferSize);
    while (count != -1) 
    {
     out.write(b, 0, count);
     amount += count;
     System.out.println("处理了" + amount + "字节.");
     count = in.read(b, 0, bufferSize);
     System.out.println("处理了" + amount + "字节,成功.");
    }
    out.close();
    out = null;
    in.close();
    in = null;
    conn.commit();
   }
  }
  catch (Exception e) 
  {
   e.printStackTrace();
   try 
   {
    conn.rollback();
   }
   catch (Exception ignored) {}
  }
  finally 
  {
   if (out!=null) try{out.close();} catch(Exception igored){}
   if (in!=null) try{in.close();} catch(Exception igored){}
  }
 }
}

 可直接运行

数据库就自己建吧，建个类型为blob型的就行了