java与数据库的连接
1.1、Oracle8/8i/9i数据库（thin模式）  
2. 
3.Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();  
4. 
5.String url="jdbc:oracle:thin:@localhost:1521:orcl";  
6. 
7.//orcl为数据库的SID  
8. 
9.String user="test";  
10. 
11.String password="test";  
12. 
13.Connection conn= DriverManager.getConnection(url,user,password);  
14. 
15.2、DB2数据库  
16. 
17.Class.forName("com.ibm.db2.jdbc.app.DB2Driver ").newInstance();  
18. 
19.String url="jdbc:db2://localhost:5000/sample";  
20. 
21.//sample为你的数据库名  
22. 
23.String user="admin";  
24. 
25.String password="";  
26. 
27.Connection conn= DriverManager.getConnection(url,user,password);  
28. 
29.3、Sql Server7.0/2000数据库  
30. 
31.Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();  
32. 
33.String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb";  
34. 
35.//mydb为数据库  
36. 
37.String user="sa";  
38. 
39.String password="";  
40. 
41.Connection conn= DriverManager.getConnection(url,user,password);  
42. 
43.4、Sybase数据库  
44. 
45.Class.forName("com.sybase.jdbc.SybDriver").newInstance();  
46. 
47.String url =" jdbc:sybase:Tds:localhost:5007/myDB";  
48. 
49.//myDB为你的数据库名  
50. 
51.Properties sysProps = System.getProperties();  
52. 
53.SysProps.put("user","userid");  
54. 
55.SysProps.put("password","user_password");  
56. 
57.Connection conn= DriverManager.getConnection(url, SysProps);  
58. 
59.5、Informix数据库  
60. 
61.Class.forName("com.informix.jdbc.IfxDriver").newInstance();  
62. 
63.String url =  
64. 
65."jdbc:informix-sqli://123.45.67.89:1533/myDB:INFORMIXSERVER=myserver;  
66. 
67.user=testuser;password=testpassword";  
68. 
69.//myDB为数据库名  
70. 
71.Connection conn= DriverManager.getConnection(url);  
72. 
73.6、MySQL数据库  
74. 
75.Class.forName("org.gjt.mm.mysql.Driver").newInstance();  
76. 
77.String url ="jdbc:mysql://localhost/myDB?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1" 
78. 
79.//myDB为数据库名  
80. 
81.Connection conn= DriverManager.getConnection(url);  
82. 
83.7、PostgreSQL数据库  
84. 
85.Class.forName("org.postgresql.Driver").newInstance();  
86. 
87.String url ="jdbc:postgresql://localhost/myDB" 
88. 
89.//myDB为数据库名  
90. 
91.String user="myuser";  
92. 
93.String password="mypassword";  
94. 
95.Connection conn= DriverManager.getConnection(url,user,password);