--创建图片表
CREATE TABLE W_PIC
(
  ID INT,        --编号
  WPATH VARCHAR(80),  --完整路径
  PIC VARCHAR(80),  --图片名称，不带后缀
  img image      --图片内容
)
--图片表中插入数据
INSERT INTO W_PIC(ID,WPATH,PIC)
SELECT 1, 'C:\Users\w\Desktop\产品图片\2#加工图34-C专用.jpg','2#加工图34-C专用'
UNION ALL
SELECT 2, 'C:\Users\w\Desktop\产品图片\129.jpg','129'
--创建游标
DECLARE CUR_PIC CURSOR FOR SELECT ID,WPATH,PIC FROM W_PIC;
DECLARE @ID int, @PATH VARCHAR(80), @PIC VARCHAR(80), @STR VARCHAR(100);
OPEN CUR_PIC;
FETCH NEXT FROM CUR_PIC INTO @ID, @PATH, @PIC;
WHILE @@FETCH_STATUS=0
BEGIN
  SET @STR=STR(@ID);  
  --插入图片数据
  EXECUTE ('UPDATE W_PIC SET img=(SELECT * FROM OPENROWSET(BULK N'''+@PATH+''', SINGLE_BLOB) AS Photo) WHERE ID='+@STR);
  FETCH NEXT FROM CUR_PIC INTO @ID, @PATH, @PIC;
END
CLOSE CUR_PIC;
DEALLOCATE CUR_PIC;

package com.an.jdbc.bean;
     import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.InputStream;
  import java.sql.Connection;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import org.junit.Test;
  import com.an.jdbc.utils.JDBCUtils;
  public class TestBlob {
    //向数据库中插入图片
    @Test
    public void test1() throws Exception{
      String sql = "update beauty set photo = ";
      Connection connection = JDBCUtils.getConnection();
      PreparedStatement ps = connection.prepareStatement(sql);
      FileInputStream fis = new FileInputStream("C:\\Users\\Administrator\\Desktop\\1.jpg");
      ps.setBlob(1, fis);
      ps.setInt(2, 2);
      int update = ps.executeUpdate();
      System.out.println(update>0"success":"failure");
      JDBCUtils.closeConnection(null, ps, connection);
    }
    //从数据库中读取一张图片
    @Test
    public void test2() throws Exception{
      String sql = "select photo from beauty where id=";
      Connection connection = JDBCUtils.getConnection();
      PreparedStatement ps = connection.prepareStatement(sql);
      ps.setInt(1, 2);
      ResultSet set = ps.executeQuery();
      if(set.next()){
        InputStream inputStream = set.getBinaryStream(1);
        FileOutputStream fos = new FileOutputStream("src\\copy.jpg");
        byte[] b = new byte[1024];
        int len = -1;
        while((len=inputStream.read(b))!=-1){
          fos.write(b, 0, len);
        }
        fos.close();
        inputStream.close();
      }
      JDBCUtils.closeConnection(null, ps, connection);
    }
  }