Connect to the database instance using Java [reprint]

Last Update:2018-12-05 Source: Internet

Author: User

Tags informix sybase sybase database

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The code in this article mainly lists the key code used to connect to the database. Other database access code is omitted.

1. oracle8/8i/9i Database (thin Mode)

Class. forname ("oracle. JDBC. Driver. oracledriver"). newinstance ();

String url = "JDBC: oracle: thin :@ localhost: 1521: orcl ";

// Orcl is the SID of the database

String user = "test ";

String Password = "test ";

Connection conn = drivermanager. getconnection (URL, user, password );

2. DB2 database

Class. forname ("com. IBM. db2.jdbc. App. db2driver"). newinstance ();

String url = "JDBC: DB2: // localhost: 5000/sample ";

// Sample is your database name

String user = "admin ";

String Password = "";

Connection conn = drivermanager. getconnection (URL, user, password );

3. SQL Server7.0/2000 database

Class. forname ("com. Microsoft. JDBC. sqlserver. sqlserverdriver"). newinstance ();

String url = "JDBC: Microsoft: sqlserver: // localhost: 1433; databasename = mydb ";

// Mydb is a database

String user = "sa ";

String Password = "";

Connection conn = drivermanager. getconnection (URL, user, password );

4. Sybase Database

Class. forname ("com. Sybase. JDBC. sybdriver"). newinstance ();

String url = "JDBC: Sybase: TDS: localhost: 5007/mydb ";

// Mydb is your database name

Properties sysprops = system. getproperties ();

Sysprops. Put ("user", "userid ");

Sysprops. Put ("password", "user_password ");

Connection conn = drivermanager. getconnection (URL, sysprops );

5. Informix Database

Class. forname ("com. Informix. JDBC. ifxdriver"). newinstance ();

String url =

"JDBC: Informix-sqli: // 123.45.67.89: 1533/mydb: informixserver = myserver;

User = testuser; Password = testpassword ";

// Mydb indicates the Database Name

Connection conn = drivermanager. getconnection (URL );

6. MySQL database

Class. forname ("org. gjt. Mm. MySQL. Driver"). newinstance ();

String url = "JDBC: mysql: // localhost/mydb? User = soft & Password = soft1234 & useunicode = true & characterencoding = 8859_1"

// Mydb indicates the Database Name

Connection conn = drivermanager. getconnection (URL );

7. PostgreSQL database

Class. forname ("org. PostgreSQL. Driver"). newinstance ();

String url = "JDBC: PostgreSQL: // localhost/mydb"

// Mydb indicates the Database Name

String user = "myuser ";

String Password = "mypassword ";

Connection conn = drivermanager. getconnection (URL, user, password );

Example:

1. Access <% @ page contenttype = "text/html; charset = gb2312" Import = "Java. SQL

. * "%>

<% @ Page import = "Java. util. *, java. Text. *" %>

<HTML>

<Title> retrieve and display information in the table </title>

<Body>

<%

Class. forname ("Sun. JDBC. ODBC. jdbcodbcdriver ");

Connection con = drivermanager. getconnection ("JDBC: ODBC: webdata ");

Statement SMT = con. createstatement ();

String SQL;

SQL = "select BH, shrxx, shrdh, shrdz, hwjs, bzxs, YF, BJD from hy ";

Resultset rs = smt.exe cutequery (SQL );

Out. println ("retrieve all information in the table ");

%>

Click Here </font> <a href = "javascript: history. Back (1)"> <B> <font color = "# ff0000"

> Back </font> </B> </a> <HR>

<%

Out. println ("<Table border = '1'> ");

Out. println ("<tr bgcolor = 'yellow'> <TH> bill of lading number </Th> <TH> name of the consignee </Th> <TH> receipt

Person phone number </Th> <TH> consignee's address </Th> <TH> Number of parcels </Th> <TH> packing form </Th> <TH> freight </Th> <

Th> quote </Th> </tr> ");

While (Rs. Next ())

Out. println ("<tr> <TD>" + Rs. getstring (1) + "</TD> <TD>" + Rs. getstring (2) + "</

TD> <TD> "+ Rs. getstring (3) + "</TD> <TD>" + Rs. getstring (4) + "</TD> <TD>" + Rs.

Getstring (5) + "</TD> <TD>" + Rs. getstring (6) + "</TD> <TD>" + Rs. getstring (7) +

"</TD> <TD>" + Rs. getstring (8) + "</TD> </tr> ");

Con. Close ();

%>

<HTML>

<Body>

</Table>

</Body>

</Html>

2. MySQL

<% @ Page contenttype = "text/html; charset = gb2312" %>

<% @ Page import = "Java. SQL. *" %>

<HTML>

<Body>

<% Class. forname ("org. gjt. Mm. MySQL. Driver"). newinstance ();

String url = "JDBC: mysql: /// 192.168.0.1: 3306/test? User = root & Password = 123 ";

Connection conn = drivermanager. getconnection (URL );

Statement stmt = conn. createstatement (resultset. type_scroll_sensitive, resultset.

Concur_updatable );

String SQL = "select * From huahe_article ";

Resultset rs1_stmt.exe cutequery (SQL); %>

<Table> <tr> <TD> the content of your first field is: </TD>

<TD> the content of your second field is: </TD> </tr>

<%

While (Rs. Next () {%>

<Tr> <TD>

<% = Rs. getstring (1) %> </TD> <TD>

<% = Rs. getstring (2) %> </TD> </tr>

<% }%>

</Table>

<% Out. Print ("database operation successful, congratulations"); %>

<% Rs. Close ();

Stmt. Close ();

Conn. Close ();

%>

</Body>

3. With MSSQL

<% @ Page contenttype = "text/html; charset = gb2312" %>

<% @ Page import = "Java. SQL. *" %>

<%!

Public static string getgbstring (string SRC ){

Try {

Return new string (SRC. getbytes ("ISO-8859-1"), "gb2312 ");

} Catch (Java. Io. unsupportedencodingexception e ){

Return NULL;

}

}

%>

<HTML>

<Body>

<% Class. forname ("com. Microsoft. JDBC. sqlserver. sqlserverdriver"). newinstance ();

String url = "JDBC: Microsoft: sqlserver: // 192.168.0.1: 1433; databasename = test ";

// Test your database

String user = "sa ";

String Password = "";

Connection conn = drivermanager. getconnection (URL, user, password );

Statement stmt = conn. createstatement (resultset. type_scroll_sensitive, resultset.

Concur_updatable );

String SQL = "select * from test ";

Resultset rs1_stmt.exe cutequery (SQL );

While (Rs. Next () {%>

The content of your first field is: <% = getgbstring (Rs. getstring (1) %> <br>

Your second field content is: <% = getgbstring (Rs. getstring (2) %> <br>

<% }%>

<% Out. Print ("database operation successful, congratulations"); %> <br>

<% Rs. Close ();

Stmt. Close ();

Conn. Close ();

%>

</Body>

</Html>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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