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1 Drag & Drop 3 4

2 Java Applet Java Applet Applet Servlet Stream Applet JavaScript Java Database Connectivity BLOB DBMS

3 JDBC Web DB DB Web

4 ADSL ID Web [1] 24bit BMP(bitmap) Web 24bit BMP Web Web 4

5 2 2.1 [2] bit BMP Web JPEG JPEG JPEG JPEG BMP Web 2.3 JPEG [3][4] 2.1 5

6 JPEG DCT DCT DCT JPEG bit JPEG 24bit JPEG 24bit JPEG 24bit JPEG JPEG DCT JPEG JPEG DCT t t ASCII

7 ID 8 JPEG 2 JPEG DCT

8 2.4 JPEG <SOI>,<EOI> DQT -2 DQT ASCII t 8

9 3 3.1 Web 3.1 PC Web 4 (Step2) (Step3) Web Server (Step1) Client (Step1) (Step1) (Step3) 3.1 9

10 Java Servlet Servlet Servlet Web Java CGI(Common Gateway Interface)Servlet CGI Servlet Jakarta Project Tomcat[5] Apache Tomcat Apache Servlet Tomcat Tomcat Apche Tomcat DBMS(Data Base Management System) Hitachi HiRDB Servlet DMBS JDBC(Java Data Base Connectivity)JDBC vajra OS Windows 2003 Server R2 Standard Edition

11 3.3 Web HTML form ( 3.3.1) Drag & Drop Drop Drop Drag & Drop 11

12 3.3.1 Java Applet Java Applet AppletApplet Web HTML Web Applet 2 Java [5] Applet [5][6] Java Applet Java Applet Applet class JAR JAR jdk C: Java Mnemonic >jar cvf MakeMnemonicApplet.jar * drop.jpg ( = 6858) ( = 5836)(14% ) MakeMnemonicApplet$FileDropAcceptableLabel.class ( = 2415) ( = 1192)(50% ) MakeMnemonicApplet.class ( = 3769) ( = 2072)(45% ) MakeMnemonicApplet.java ( = 6548) ( = 2322)(64% ) Thumbs.db ( = 5120) ( = 2659)(48% ) JAR 12

13 JAR keytool jkd mykey C: >keytool -genkey : testkey [Unknown]: matoba shoji [Unknown]: shimane university [Unknown]: lab tanaka [Unknown]: matsue [Unknown]: nishikawatsu 2 [Unknown]: JP CN=matoba shoji, OU=shimane university, O=lab tanaka, L=matsue, ST=nishikawatsu, C=JP? [no]: y <mykey> ( RETURN ): mykey Applet Drop Web C: Java Mnemonic >jarsigner MakeMnemonicApplet.jar mykey : testkey :

14 3.4 (DL) Web DL Keyword DBMS DBMS DL DBMS ID DL DBMS Web Drop Drop Drop Web DBMS Web URL URL keyword DL 14

3.4.2 3.4.1 Applet Servlet Stream Applet Drop Web Stream Applet-Servlet Applet Applet Applet Stream 3.

15 Applet Servlet Stream Applet Drop Web Stream Applet-Servlet Applet Applet Applet Stream Applet Servlet Applet Servlet Jakarta Commons httpclient multipart post Applet JAR API 15

16 URL url = new URL(" URLConnection uc = url.openconnection(); // uc.setdooutput(true); // uc.setusecaches(false); //Content-type uc.setrequestproperty("content-type","application/octet-stream"); // DataOutputStream out = new DataOutputStream(uc.getOutputStream()); dout.write(buf,0,(int)filesize); dout.flush(); dout.close(); /************************/ /** **/ /************************/ // DataInputStream din = new DataInputStream(uc.getInputStream()); // String receive = din.readutf(); // din.close(); Applet-Servlet Stream (Applet ) 16

17 // DataInputStream din = new DataInputStream(req.getInputStream()); // File fp = new File("C: LGW Data login.jpg"); String fname = fp.getabsolutepath(); FileOutputStream fout = new FileOutputStream(fp); // int c; int i=0; while ((c = (din.read()))!= -1) { fout.write(c); i++; } // din.close(); fout.close(); Applet-Servlet Stream (Servlet ) jpegstetgano.exerejpegstegano.exe C exe DBMS ID ID DBMS ID jpegstegano.exe Servlet Java.Runtime.exec Java jpegstegano.exe Tomcat Tomcat Catalina.policy Tomcat 17

18 3.4.5 Java.Runtime.exec grant codebase "file:${catalina.home}/lgw/*" { permission java.lang.runtimepermission "java.lang.runtime.*", "write"; permission java.io.filepermission "java.io.*", "write"; }; Catalina.policy // String com = new String("C:/LGW/Prog/jpegstegano.exe " + "C:/LGW/Images/01.jpg " + "C:/LGW/Images/fout.jpg " +"maketest"); //Runtime Runtime rt = Runtime.getRuntime(); try // Process pr = rt.exec(com); rt.waitfor(); } // catch (Exception e) { System.exit(1); } Java.Runtime.exec ID DBMS DBMS ID MAX MAX +1 ID ID DBMS ID 18

19 t A B t1 t2 DBMS ID A DBMS ID t3 DBMS ID t4 t5 DL t6 DBMS t7 DBMS java synchronized Java.util.concurrent.atomic 19

20 c Synchronized concurrent 2t t select Password insert 4t 5t 20

21 3.5 Drop Drop Applet Servlet Web Web Java.Runtime.exec rejpegstegano.exe DMBS Applet DBMS

22 3.5.1 Applet JavaScript Applet Servlet Applet Applet JavaScript [7] Applet Web Java JavaScript Java Plug-in JSOject JSObject jdk jre lib plugin.jar Java import netscape.javascript.*; Applet HTML JavaScript <applet> MAYSCRIPT (JavaScript ) Applet JSObject JavaScript Call HTML JavaScript fservlet error1 error2 <script language="javascript">  </script> JavaScript (HTML ) 22

23 <applet code="streamapplet" archive= width="200"height="200" MAYSCRIPT> </applet> JavaScript (HTML ) import netscape.javascript.*; //JavaScript public void JavaScript(String data) { JSObject win = JSObject.getWindow(this); JSObject doc = (JSObject) win.getmember("document"); JSObject loc = (JSObject) doc.getmember("location"); Object[] args = new Object[3]; args[0] = new String(data); String s = (String) loc.getmember("href"); // document.location.href } win.call("f",args ); // Call f() in HTML page Applet JavaScript 3.6 Java Database Connectivity DBMS Java DBMS Java Database Connectivity JDBCAPI DBMS JDBC Driver DBMS HiRDB HiRDB JDBC Driver Driver Manager Data Source Servlet DBMS JDBC JDBC JDBC Driver Manager Data Source[7] Java JDBC DBMS Data Source DBMS 23

24 Driver Manager JDBC 2.0 API Data Source Data Source DBMS DBMS Driver Manager DBMS Servlet Data Source Tomcat Servlet Driver Manager Java DBMS DBMS Data Souce Tomcat 3.6.1Data Source Tomcat Tomcat tomcat 5 DBMS DBMS Servlet Data Source Tomcat Driver Manager Tomcat Data Source Driver Manager Data Source 24

25 <Context path="" docbase="c: Web users s Servlet"> <Resource name="jdbc/datasource" auth="container" type="javax.sql.datasource" driverclassname="jp.co.hitachi.soft.hirdb.jdbc.prdbdriver" url="jdbc:hitachi:prdbdrive://dbid=22200,dbhost= ,db=hirdb" username="s033081" password="s033081" maxactive="50" maxidle="200" maxwait="1000"/> </Context> BLOB DBMS CHAR BLOB DBMS ID,NAME,PASSWORD,MAIL,KEYWORD CHAR IMAGE BLOB(Binary Large Object)[9]BLOB DBMS BLOG LOB RD SQL LOB RD BLOB RLOB811 BLOB LOB RD RD RD HiRDB Version7 25

26 P169~P171,P178,P181~183,P204~P209 [10] create table IMAGE_LGA (ID char(8),name char(16),password char(8),mail char(40),keyword char(8), IMAGE BLOB(100K) in RLOB811); SQL BLOB Java //File File Ifile = new File(FilePath); // fin = new FileInputStream(Ifile); // Statement stmt = con.preparestatement("insert INTO s image_lga(id, NAME, PASSWORD, MAIL, KEYWORD, IMAGE) VALUES('"+id+"', '"+name+"', '"+pass+"', '"+mail+"', '"+key+"',?)"); stmt.setbinarystream(1,fin2,(int)ifile.length()); stmt.executeupdate(); 3.7.3? 26

27 4 Web [11]

28 [11] Web Drop Drop Drop Applet

29 Drop 3 Drop DBMS CHAR Drop Drop Drop Drop 29

30 1 Drop 3! = 6 m n m ( m n) 1 m! a~z,a~z,0~ (10 ) ( Drag & Drop 0~ (10 )

31 31

32 5 5.1 Web Web Web Applet Applet Applet Applet Web Web Servlet Applet Servlet Stream Web Post Post Java Jakarta Commons HttpClient HttpClient Post Post 32

33 HttpClient Post Drag & Drop rena Web DB vajra Web DB AD Servlet Servlet Servlet Servlet 5.1 Servlet 33

34 5.1.3 Servlet Applet Thread Servlet1Servlet3 Thread1 Servlet1 Applet Thread2 Servlet2 Thread3 Servlet3 Web JDBC

35 JDBC Driver Manager Data Source Driver Manager Data Source Data Source (Servlet2 Servlet4) 3 3 Servlet1Servlet3 Servlet4Servlet JDBC JDBC Driver Manager Data Source 2 35

36 DBMS Servlet3 Servlet JDBC JDBC Data Source Data Source Driver Manager DBMS Sun Data Source 36

37 503 Web Data Source Web Web Web DB Web 37

38 5.2.4 Web Web Web 38

39 ServletServlet2,Servlet HiRDB HiRDB DB Web B Web DB

40 5.2.7 DB DB DB 40

41 DB DB DBMS Servlet3 Servlet5 -Web Web Servlet3 DBMS DB Servlet3 Web -DB -Web DB 41

42 5.2.4 DB Web vajra Web DB DB vajra DB C DB Web DB Web 42

43 DB Web DB Web Servlet3 Servlet3 DBMS vajra 100 Servlet1Servlet KB 20 43

44 Drop KB KB 200KB KB Servlet3 Servlet4 Servlet 200KB 50 Web 50 Servlet3 38 Servlet4 Drop Drop KB 50 44

45 6 6.1 HTML Drag & Drop JPEG 200KB bit JPEG 3 45

46 46

47 [1], 2004 [2] 2003 vol.44 No.3 [3] [4],2003 [5] [6]RSA, g.html [7]JavaScript,,2000 [8]Data source, [9] [10]HiRDB Version [11] 47

48 9.1 JDBC Servlet3 9.1 JDBC Servlet3 48

49 9.2 JDBC Servlet5 9.2 JDBC Servlet5 49

50 9.3 Web 9.3 Web 50

51 9.4 Web 9.4 Web 51

52 9.5 Web 9.5 Web 52

53 9.6 Web 9.6 Web 53

54 9.7 DB 9.7 DB 54

55 9.8 DB 9.8 DB 55

56 9.9 DB 9.9 DB 56

57 9.10 DB 9.10 DB 57

58 9.11 DB Web 9.11 DB web 58

59 9.12 DB Web 9.12 DB Web 59

60 9.13 DB Web 9.13 DB Web 60

61 9.14 DB Web 9.14 DB Web 61

62 Servlet Servlet Servlet3 Servlet

HTML Java Tips dp8t-asm/java/tips/ Apache Tomcat Java if else f

HTML Java Tips dp8t-asm/java/tips/ Apache Tomcat Java if else f 1 Servlet 1.1 Web Web WWW HTML CGI Common Gateway InterfaceWeb HTML Web Web CGI CGI CGI Perl C Java Applet JavaScript Web CGI HTML 1.2 Servlet Java Servlet Servlet CGI Web CGI 1 Java / Java Java CGI Servlet