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3&dADL < !-- -- -- -- -- -- -- -- -- -- -- -- -- --servlet-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -->
-6)/BS`!4r package Photo;
'FxOw?vB5 import javax.servlet.*;
P}zf ?ex import javax.servlet.http.*;
4))<w,t import java.io.*;
FGpVMJ import java.util.*;
P~=0~?ltmO import java.lang.*;
#oZ<#dzD import java.sql.*;
sl$9Y5 >;4!>8 /**
(Jp%1v * <p>Title: </p>
!niZG[} * <p>Description: </p>
@Pe#j~ * <p>Copyright: Copyright (c) 2002</p>
R%.id*]G< * <p>Company: </p>
m(o u!9Q * @author unascribed
,:VzU_C'< * @version 1.0
*0UZ'L= */
Z4R!^m :G Wr public class ShowImage extends HttpServlet {
grb?lV.?' private static final String CONTENT_TYPE = "image/*";
Tyb^\zSg: /**
,%SrW}{ ! * 定义数据库连接字符串,jdbc.odbc桥
;Fe_^x=3;v */
j=4be0 ;! private String driver_class = "oracle.jdbc.driver.OracleDriver";
2%[j"6 private String connect_string =
R )Qoite "jdbc:oracle:thin:xxw/xxw@192.168.1.50:1521:ORCL";
]$ ,ap%iW Connection conn = null;
hZ~q6g81Y ResultSet rs = null;
>)]N8_2| Statement stmt = null;
Xq?Y8B{K /********************************************
CE{""lm q * 定义应用变量
A?YNKUl: ******************************************/
>G3l';&@3! private String SQLString = ""; //定义查询语句
oAQF.5Y:[o public String M_EorrMenage = ""; //定义错误信息变量
+] hOR/e{ private InputStream in = null; //定义输入流
O'sroEb'\ private int len = 10 * 1024 * 1024; //定义字符数组长度
G^0i;3.W HZbC'iI<; //Initialize global variables
miY<k0~/ public void init() throws ServletException {
;0mrEb /**
\QY7)).j * 连接数据库
pzDIL" */
Uveyyd9o try {
RZ{L*dd+f Class.forName(driver_class);
QFjRl,?/E } catch (java.lang.ClassNotFoundException e) {
:QKLbVSL( //异常
Fj2 |^x' System.err.println("databean():" + e.getMessage());
]j5l3BlM1* }
|9 MB7|d }
Q4hd\sx> //Process the HTTP Get request
3V55|29 public void doGet(HttpServletRequest request, HttpServletResponse response)
YM s~lc5 throws ServletException, IOException {
=HD9 TO response.setContentType(CONTENT_TYPE);
3f''lA=w E PrintWriter out = response.getWriter();
gJ; zt //在数据库中的照片的ID
dM]stIO.E+ int PHOTOID = 0;
h.)qO5h /*********************************************
CL\>_ * 接受上文传递的图片ID号
D ayd ) * 上文传输文件名称为photoid
GB(iD?O *********************************************/
d./>QsO?H try {
>"[?(/97 GsS*9#v PHOTOID = Integer.parseInt(request.getParameter("photoid"));
n6kaOh^ lq SQLString = "select * from xxw_photo where p_id=" + PHOTOID;
.gFw,M eiBIbIC } catch (Exception e) {
/BtGnnc e.printStackTrace();
4@4"%85| response.setContentType("text/html; charset=gb2312");
/E a#ZWM M_EorrMenage = "请输入图片ID号";
^$';mWg>q M_EorrMenage =
2^XhLW28 new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK");
M%V{lpb out.println("<%@ page contentType='text/html; charset=gb2312' %>");
8z::iHBo out.println("<html>");
T88=O out.println("<head><title>id</title></head>");
F&'%s|+fC out.println("<body>");
K$?'1t/ out.println("<p>" + M_EorrMenage + "</p>");
J*fyQ~ out.println("</body></html>");
9axX%v1 q$fy, gZu }
i':Zu /*****************************************************
mF.^/%t,f7 * 执行查询语句
ue^:cJZm *****************************************************/
8gM-}R}0 try {
7g#@ qVsEM conn = DriverManager.getConnection(connect_string);
'<Y^F |r stmt = conn.createStatement();
GgAi,Q"uK rs = stmt.executeQuery(SQLString);
+@,.E T } //try
3./6mQ~R, catch (SQLException ex) {
8c|%YJhh System.err.println("aq.executeUpdate:" + ex.getMessage());
O$#/+F M_EorrMenage = "对不起,数据库无法完成此操作!";
`K/XHqi M_EorrMenage =
]}GLpd new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK");
OVs.<p. response.setContentType("text/html; charset=gb2312");
Vu}&@M,=vz out.println("<html>");
+#fBz* out.println("<head><title>no_database</title></head>");
PIEFLexu out.println("<body>");
r@m2C,6 out.println("<p>" + M_EorrMenage + "</p>");
<s\q$ out.println("</body></html>");
U`h ~Jl M<%P({SZ }
m@OO1}vD /*********************************************
&`:or cm * 将图片流读入字符数组中,并显示到客户端
Q]q; o"f ********************************************/
i %aVi)t= try {
aU~Jxc if (rs.next()) {
}fA&$|ahe in = rs.getBinaryStream("photo");
-{{keexkKR response.reset(); //返回在流中被标记过的位置
$Kd{V$ response.setContentType("image/jpg"); //或gif等
gJ8yVS#aU // int len=in.available();//得到文件大小
)uyP|h|KZ OutputStream toClient = response.getOutputStream();
1-j"uz byte[] P_Buf = new byte[len];
p8?Z+/=`+ int i;
<@&B`h while ((i = in.read(P_Buf)) != -1) {
S`]6 -7f@ toClient.write(P_Buf, 0, i);
7>U.=6pE>4 }
Rmm+I`"v2 in.close();
hK"2U[H39 toClient.flush(); //强制清出缓冲区
3B?yNR7 toClient.close();
{)Zc |MGL } else {
Y@Gqg0N M_EorrMenage = "无此图片!";
k%c+c@$B M_EorrMenage =
` 6V/Y 5 new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK");
d8L]`x<. response.setContentType("text/html; charset=gb2312");
2|< SG1 out.println("<html>");
%,'\E out.println(
*VT5PCn!, "<head><title>this photo isn't have</title></head>");
wBUu9:p]O out.println("<body>");
,RGn ^.aR5 out.println("<p>" + M_EorrMenage + "</p>");
y5\\]i)eLH out.println("</body></html>");
k+^aCl` }
&WObX X_ rs.close();
%$]nQ } catch (Exception e) {
{\} ~= .4s e.printStackTrace();
" BkO.>x( M_EorrMenage = "无法读取图片!";
[SZ,Yf M_EorrMenage =
G|s 3P new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK");
JliNSKxY response.setContentType("text/html; charset=gb2312");
VyjYH out.println("<%@ page contentType='text/html; charset=gb2312' %>");
[ e8-(:, out.println("<html>");
-$NtXF]6< out.println("<head><title>no photo</title></head>");
!F#ypR$wd out.println("<body>");
4MO+e;n out.println("<p>" + M_EorrMenage + "</p>");
_5qhb"o out.println("</body></html>");
h}{8h }
a1Sn"Ax4 }
J27tVY%\ !{+co 4Xo //Clean up resources
>V/KMGO public void destroy() {
Mq]aBCyk try {
TZ[u({kf conn.close();
8.zKm$FNt } catch (SQLException e) {
36s,}5D( System.err.println("aq.executeUpdate:" + e.getMessage());
p=Y\j M_EorrMenage = "对不起,数据库无法完成此操作!";
+K&qUU!%T }
k$9m)36 \ }
CVLX=T?N\ }
W19`h Zx --------------------------------------------------------------------------------
rp#<r)\ 'JqMYOrbi <!---------------------------显示---------------------------------------------->
j]3zP R:[t <html>
I?w1i^ \ <head>
'S?#&~Jv8L <title>Untitled Document</title>
#8 9%gx </head>
sg!5&}\GH <body bgcolor="#FFFFFF" text="#000000">
epjtYqF^e <table>
T BRLOY` <%
v.l 6 int i=1;
2KKb&z! i_ while(i<3){
>nAla J %>
g*RYtxj@j <tr>
H!_T!d <td colspan="3"> <img border="1" src="
http://192.168.1.50:8100/ShowImage?photoid=<%=i%>"></td>
{_3ksboo </tr>
<0!rA(M <%
RIW8?7i i++;
z+:l=F} }
K@*BR Hf# %>
7HOB%X </table>
vmJt </body>
/9Z]6)a\ </html>
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