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* 下面的圖像的JSP *爲什麼我的圖像在jsp中顯示默認圖標？下面有
<% try {
String connectionURL = "jdbc:mysql://localhost:3306/mydb";
Connection connection = null;
Statement statement = null;
ResultSet rs = null;
Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = DriverManager.getConnection(connectionURL, "root", "alienware");
statement = connection.createStatement();
String QueryString = "SELECT Warehouse_Stock.name ,Warehouse_Stock.photo from Warehouse_Stock";
rs = statement.executeQuery(QueryString);
%>
<table class = "hovered" id="info" cellpadding="15" border="2">
<thead>
<tr>
<td>Photo</td>
<td>Product Name</td>
<!--<td>Contact Number</td>
<td>Remarks</td>
<td>Email Address</td>-->
</tr>
</thead>
<%
while (rs.next()) {
%>
<TR>
<td><img src="getImageDetails.jsp?your_id=12" /></td>
<td><%=rs.getString(1)%></td>
<%--<td><%=rs.getBlob(1)%></td>--%>
<%-- <td><%=rs.getInt(2)%></td>
<td><%=rs.getString(3)%></td>
<td><%=rs.getString(4)%></td>--%>
</TR>
這裏是servlet
response.setContentType("image/jpeg");
PrintWriter out = response.getWriter();
int img_id = Integer.parseInt(request.getParameter("product_code"));
DBConnectionImp db = new DBConnectionImp();
Connection con = db.getConnection();
ResultSet rs = null;
PreparedStatement pstmt = null;
OutputStream oImage;
try {
pstmt = con.prepareStatement("SELECT Warehouse_Stock.photo from Warehouse_Stock");
pstmt.setInt(1, img_id);
rs = pstmt.executeQuery();
if (rs.next()) {
//byte barray[] = rs.getBytes(1);
//byte barray[] = rs.getBytes(1);
//response.setContentType("image/jpeg");
////oImage = response.getOutputStream();
//oImage.write(barray);
// oImage.flush();
//oImage.close();
Blob blob = rs.getBlob(1);
//response.setContentType("image/jpeg");
oImage = response.getOutputStream();
oImage.write(blob.getBytes(1, (int) blob.length()));
oImage.flush();
oImage.close();
}
} catch (Exception ex) {
//ex.printStackTrace();
} finally {
try {
if (con != null) {
con.close();
}
} catch (Exception ex) {
// ex.printStackTrace();
}
}
你看到有顯示圖像，但這些圖像都是相同的。這些圖像不是真正的圖像，而是像加載不支持Flash的瀏覽器時表示圖像破碎的圖標。你瀏覽器不支持Flash時看到的是我正在談論的那個。但它不是一個「f」，而是一個表示破碎圖像的圖標。