上次我介绍了mysql数据库中存取图片的方法,详见:
http://www.blogjava.net/fl1429/archive/2009/05/27/278212.html
正好这几天又用到了sql server 2000数据库,然而在sql 2000中存取图片和mysql中大部相同,但是思想是一样的,都是在数据库中存二进制,但是还有一种解决方案,就是可以再数据库中存取图片的路径,这样比较简单,我就不介绍了,为了安全起见,还是把图片保存到数据库中了.
首先注意在mysql中存的字段类型是 blob类型,而在sql 2000中则用image类型,具体步骤见下:
上传页:upload.jsp
<form action="ImageServlet" method="post" name="form1">
<p> </p>
<p> </p>
<p>头像上传:</p>
<table width="800" height="136" border="0">
<tr>
<td>姓名:</td>
<td><input type="text" name="name">
</td>
</tr>
<tr>
<td>上传图片：</td>
<td><input type="file" name="photo">
（上传后不可修改）</td>
</tr>
<tr>
<td><input type="submit" name="Submit" value="提交"></td>
<td><input type="reset" name="Submit2" value="重置"></td>
</tr>
</table>
</form>处理的servlet:ImageServlet
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
String name = request.getParameter("name");
String path = request.getParameter("photo");
int len;
String query;
PreparedStatement pstmt;
Connection conn = null;
try{
ConnectSqlserver connectSqlserver = new ConnectSqlserver();
conn = connectSqlserver.openConnection();
File file = new File(path);
FileInputStream fis = new FileInputStream(file);
len = (int)file.length();
query = ("insert into applys(name,photo) VALUES(?,?)");
pstmt = conn.prepareStatement(query);
pstmt.setString(1,name);
// Method used to insert a stream of bytes
pstmt.setBinaryStream(2, fis, len);
pstmt.executeUpdate();
}catch(Exception e){
e.printStackTrace();
}
out.flush();
out.close();
}显示图片的servlet:
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Connection conn = null;
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
//PrintWriter out = response.getWriter();
byte[] fileBytes;
String query = "";
try
{
ConnectSqlserver connectSqlserver = new ConnectSqlserver();
conn = connectSqlserver.openConnection();
query = "select photo from applys where name = 'feng' ";
Statement state = conn.createStatement();
ResultSet rs = state.executeQuery(query);
if (rs.next())
{
fileBytes = rs.getBytes("photo");
System.out.println(fileBytes);
// OutputStream targetFile = new FileOutputStream("d://new.JPG");
ServletOutputStream targetFile = response.getOutputStream();
targetFile.write(fileBytes);
targetFile.close();
}
}
catch (Exception e)
{
e.printStackTrace();
}
//out.flush();
//out.close();
}显示图片的jsp:view.jsp
<td width="152" rowspan="3"><img src="ShowServlet?name=feng" width="140" height="140"></td>
ref:
http://www.java-tips.org/other-api-tips/jdbc/how-to-store-retrieve-image-to-from-sqlserver.html
http://forums.sun.com/thread.jspa?threadID=5361151
http://java.ittoolbox.com/groups/technical-functional/java-l/insert-image-into-sqlserver-sample-program-157642
http://www.java.happycodings.com/JDBC/code3.html
http://www.cnblogs.com/long/articles/166546.html
posted on 2009-06-02 15:10
fl1429 阅读(1374)
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