1 /**
 2  * 
 3  */
 4 package com.hlcui.file;
 5 
 6 import java.io.FileInputStream;
 7 import java.io.InputStream;
 8 import java.sql.Connection;
 9 import java.sql.PreparedStatement;
10 import java.sql.ResultSet;
11 import java.sql.SQLException;
12 
13 /**
14  * @author Administrator 測試寫入資料庫以及從資料庫中讀取
 
15  */
16 public class ImageDemo {
17 
18     // 將圖片插入資料庫
19     public static void readImage2DB() {
20         String path = "D:/1.png";
21         Connection conn = null;
22         PreparedStatement ps = null;
23         FileInputStream in = null;
24         try {
25             in = ImageUtil.readImage(path);
 
26             conn = DBUtil.getConn();
27             String sql = "insert into photo (id,name,photo)values(?,?,?)";
28             ps = conn.prepareStatement(sql);
29             ps.setInt(1, 1);
30             ps.setString(2, "Tom");
31             ps.setBinaryStream(3, in, in.available());
32             int
 
 count = ps.executeUpdate();
33             if (count > 0) {
34                 System.out.println("插入成功！");
35             } else {
36                 System.out.println("插入失敗！");
37             }
38         } catch (Exception e) {
39             e.printStackTrace();
40         } finally {
41             DBUtil.closeConn(conn);
42             if (null != ps) {
43                 try {
44                     ps.close();
45                 } catch (SQLException e) {
46                     e.printStackTrace();
47                 }
48             }
49         }
50 
51     }
52 
53     // 讀取資料庫中圖片
54     public static void readDB2Image() {
55         String targetPath = "D:/image/1.png";
56         Connection conn = null;
57         PreparedStatement ps = null;
58         ResultSet rs = null;
59         try {
60             conn = DBUtil.getConn();
61             String sql = "select * from photo where id =?";
62             ps = conn.prepareStatement(sql);
63             ps.setInt(1, 1);
64             rs = ps.executeQuery();
65             while (rs.next()) {
66                 InputStream in = rs.getBinaryStream("photo");
67                 ImageUtil.readBin2Image(in, targetPath);
68             }
69         } catch (Exception e) {
70             e.printStackTrace();
71         } finally {
72             DBUtil.closeConn(conn);
73             if (rs != null) {
74                 try {
75                     rs.close();
76                 } catch (SQLException e) {
77                     e.printStackTrace();
78                 }
79             }
80             if (ps != null) {
81                 try {
82                     ps.close();
83                 } catch (SQLException e) {
84                     e.printStackTrace();
85                 }
86             }
87 
88         }
89     }
90     //測試
91     public static void main(String[] args) {
92         //readImage2DB();
93         readDB2Image();
94     }
95 }