教你如何使用SQL语句从电脑导入图片到数据库的方法

–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 = ? where id = ?”;
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);
}
}