CODE: mAPQ5ft|  
-------------------------------------------------------------------------------- MNOdqKvj  
< !-- -- -- -- -- -- -- -- -- -- -- -- -- --servlet-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --> ](i’MMaA  
package Photo;  eL;dgJD  
import javax.servlet.*; kbY`* wr  
import javax.servlet.http.*; K[iI n(  
import java.io.*; daxPX#S  
import java.util.*; RCXlQwM4*  
import java.lang.*; +Ol:9@oU5  
import java.sql.*; -x 
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/** ^M jT{De  
*

Title:

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*

Description:

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*

Copyright: Copyright (c) 2002

* N@0LeOp  
*

Company:

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* @author unascribed -4yC&z  
* @version 1.0 z};C${|,  
*/ $a5&8>As  
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public class ShowImage extends HttpServlet { Ww.LLE  
  private static final String CONTENT_TYPE = "image/*"; }{u#N[Yvic  
  /** p:>m LE
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  * 定义数据库连接字符串，jdbc.odbc桥 DN4EVi’  
  */ 4IA-fvW  
  private String driver_class = "oracle.jdbc.driver.OracleDriver"; emM"N}^X  
  private String connect_string = Mpjp)  
    "jdbc:oracle:thin:xxw/xxw@192.168.1.50:1521:ORCL"; ’J; 2N8
 
  Connection conn = null; o:uzm2|  
  ResultSet rs = null; LBR<|n"8  
  Statement stmt = null; KC [zhsB  
  /******************************************** Z.bU8! |p!  
  * 定义应用变量 K*,J}’R  
  ******************************************/ }snr 65  
  private String SQLString = ""; //定义查询语句 T+(7dq-?  
  public String M_EorrMenage = ""; //定义错误信息变量 *2?UP{}jk  
  private InputStream in = null; //定义输入流 Y #@hHq  
  private int len = 10 * 1024 * 1024; //定义字符数组长度 %UC=KHbSz  
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  //Initialize global variables B. 5cq|  
  public void init() throws ServletException { n Fx0f  
    /** jJ`#Y$AJv  
    * 连接数据库 x=![m-:  
    */ CyZO<4I&  
    try { eCVi{T U~I  
        Class.forName(driver_class); ^.sv$  
    } catch (java.lang.ClassNotFoundException e) { orc ^GD/v  
        //异常 lz"J81yYwd  
        System.err.println("databean():" + e.getMessage());  
    } A 4J`1oM  
  } X{P S  
  //Process the HTTP Get request )#{E_p  
  public void doGet(HttpServletRequest request, HttpServletResponse response) 7UeB(  
    throws ServletException, IOException { U<4G;K6i8  
    response.setContentType(CONTENT_TYPE); w8z:-e2  
    PrintWriter out = response.getWriter(); ’=HyQ@L?  
    //在数据库中的照片的ID Ik-q7-M  
    int PHOTOID = 0; v’JwZT  
    /********************************************* oOWbA  
    * 接受上文传递的图片ID号 11.
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    * 上文传输文档名称为photoid ,m30rl3m  
    *********************************************/ xa]6FrZ  
    try { IT’rr0TC  
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        PHOTOID = Integer.parseInt(request.getParameter("photoid")); 5 A?^g  
        SQLString = "select * from xxw_photo where p_id=" + PHOTOID; Lb^"rV  
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    } catch (Exception e) { "xj3D0^.   
        e.printStackTrace(); (MgRULr  
        response.setContentType("text/html; charset=gb2312"); A;|YJcu  
        M_EorrMenage = "请输入图片ID号"; FUI<;oDHa]  
        M_EorrMenage = (^NMKl!?j  
          new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK");
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        out.println("<%@ page contentType=’text/html; charset=gb2312’ %>"); {I=tm~[Dn  
        out.println(""); s>E m+@  
        out.println(""); r2y’[ 6=g|  
        out.println(""); /sVnxV!  
        out.println("

" + M_EorrMenage + "

"); "0e;nRmbo  
        out.println(""); oHPY3}A  
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    } f~d2g7h  
    /***************************************************** iB/Mo  
    * 执行查询语句 %U5
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    *****************************************************/  /x9h  
    try { C<O68Yn  
        conn = DriverManager.getConnection(connect_string); VJl@3
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        stmt = conn.createStatement(); fLLWA
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        rs = stmt.executeQuery(SQLString); %U%&&3  
    } //try %zK TpU;  
    catch (SQLException ex) { C;`P^2x  
        System.err.println("aq.executeUpdate:" + ex.getMessage()); u{xCMdIi  
        M_EorrMenage = "对不起，数据库无法完成此操作！"; seP =6cq@P  
        M_EorrMenage = {$&QC
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          new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK"); uFjs 54  
        response.setContentType("text/html; charset=gb2312"); BR*O5  
        out.println(""); lmEd {ppf  
        out.println(""); 1W|Wnn_)N  
        out.println(""); I^K@0|]Qh  
        out.println("

" + M_EorrMenage + "

");  
        out.println(""); 7PWe!
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){{"&2:  
    } 8!6:> #z  
    /********************************************* x{R]--  
    * 将图片流读入字符数组中，并显示到客户端 h-{$]ow_  
    ********************************************/ ?zB^$^]cU.  
    try { Q32I8SqTp  
        if (rs.next()) { &uR:>ut9  
          in = rs.getBinaryStream("photo"); QY L|69  
          response.reset(); //返回在流中被标记过的位置 qYL[!O  
          response.setContentType("image/jpg"); //或gif等 OB!chm~  
          // int len=in.available();//得到文档大小 r’N(}n5*  
          OutputStream toClient = response.getOutputStream(); b=mD_BZU  
          byte[] P_Buf = new byte[len]; -6pTG9:d_  
          int i; ee`=< 
          while ((i = in.read(P_Buf)) != -1) { s?G bfMo  
            toClient.write(P_Buf, 0, i); FT2su*2"  
          } =^oJj6  
          in.close(); QesNH#pi6  
          toClient.flush(); //强制清出缓冲区 }’KNZ  
          toClient.close(); =TOLup{n*  
        } else { ?3FAT28  
          M_EorrMenage = "无此图片！"; w_xLCYre  
          M_EorrMenage = cL /z’Ly,  
            new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK"); GBp’’?n>  
          response.setContentType("text/html; charset=gb2312"); ^pyYkPi  
          out.println(""); ` bh4cp  
          out.println( 66 5,CQz  
            ""); H{4bs!/  
          out.println(""); pP5Tsh::  
          out.println("

" + M_EorrMenage + "

");  
          out.println(""); 5}T.A?0wPx  
        } 2b7EP3  
        rs.close(); z[y~ !D  
    } catch (Exception e) { Nd*pLuA;  
        e.printStackTrace(); QN;&~  
        M_EorrMenage = "无法读取图片！"; [ :_6Sb
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        M_EorrMenage = vyJ|9p  
          new String(M_EorrMenage.getBytes("ISO8859_1"), "GBK"); ’|3#7[)  
        response.setContentType("text/html; charset=gb2312"); NQB )h8  
        out.println("<%@ page contentType=’text/html; charset=gb2312’ %>"); A0"HYS 7  
        out.println(""); vaQ:{5L9>  
        out.println(""); 95O1! ^A  
        out.println(""); &xn}]RK  
        out.println("

" + M_EorrMenage + "

"); -?&x3x+=}  
        out.println(""); y71WO}k7  
    } qJN$:}  
  } !U; U2  
3{Tt08T;  
  //Clean up resources :Pa 5)Pv  
  public void destroy() { 4blOr[ hc  
    try { }PT~’:;t  
        conn.close(); V!Q${3)Y  
    } catch (SQLException e) { "`9kNnh.
 
        System.err.println("aq.executeUpdate:" + e.getMessage()); On?pMz<  
        M_EorrMenage = "对不起，数据库无法完成此操作！"; MR+MOT  
    } j>xuR(yn  
  } 7G[PY]x  
} .EuX3qP7:  
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