============================================================================================================================================================================================================= ============================= 1. From http://www.microsoft.com/downloads/details.aspx?familyid= 4F8F2F01-1ED7-4C4D-8F7B-3D47969E66AE & DisplayLANG = En # filelist Download "Microsoft SQL Server 2000 Driver For JDBC", installed, get three files for msbase.jar, mssqlser.jar and msutil.jar, three files Copy to Tomcat 4.1 under the Common / Lib folder
2. Add the following code in the host domain in Tomcat 4.1 factory org.apache.commons. DBCP.BasicDataSourceFactory maxactive 100 maxidle 30 30 < / value> maxwait 10000 Username sa < / parameter> password Your password DRIVERCLASSNAME com.microsoft.jdbc.sqlserver. SQLServerDriver URL jdbc: Microsoft: SQLServer: //127.0.0.1: 1433; DatabaseName = Pubs < / Context> 3. New folder "MyWeb", "MyWeb / Web-INF", "MyWeb / Web-Inf / Classes" under WebApps
4. New file "Web.xml" under Web-INF, and add the following My Web invoker / servlet / * JDBC / MYDB javax.sql.datasource Container 5 write servlet program JDBCPoolServ.javaimport java.sql *;. import javax.naming.Context; import javax.sql.DataSource; import javax.naming.InitialContext; import javax.servlet *;. import javax.servlet. http. *; import java.io. *;
public class JDBCPoolServ extends HttpServlet {public void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {DataSource ds = null; Connection con = null; String val = "null", title = "JDBC Pooling Test"; try {Context initCtx = new initialContext (); if (initctx == null) throw new exception ("Boom - No Context"); DS = (DataSource) INitctX.lookup ("Java: Comp / Env / JDBC / MYDB"); if (DS ! = null) {con = ds.getConnection (); if (con! = null) {statement stmt = con.createstatement (); ResultSet = stmt.executeQuery ("Select * from authors"); rs.next () Val = rs.getstring ("au_id"); rs.close (); stmt.close (); }con.close ();}} catch (excetion ex) {system.out.println (ex.getMessage () );} Response.setContentType ("text / html"); PrintWriter out = response.getwriter (); out.println (""); Out.println (" "); Out.println (" " " </ Title> "); Out.Println (" </ head> "); Out.println (" <body bgcolor = / "White / ">"); Out.println ("<h1>" value "</ h1>); out.println (" </ body> "); out.println (" </ html> ");} } 6. Compile JDBCPoolServ.java gets JDBCPoolServ.class (Note Join Servlet.jar Pack), under "MyWeb / Web-Inf / Classes"</p>
<p>7. Start SQL Server2000</p>
<p>8. Start Tomcat</p>
<p>9. Browse http://127.0.0.0.1:8080/myweb/servlet/jdbcpoolserv</p>
<p>10. You can see "172-32-1176" in IE Note: If you are not working properly, check whether the above folder name, URL, and Java class name are uniform.</p>
<p>============================================================================================================================================================================================================= ================</p>
<p>Tomcat5 MSSQL Server 2000 Database Connection Pool Configuration Tour Rautinee Original (Participation: 43, Expert Score: 10) Published: 2004-2-20 11:00 am Version: 1.0</p>
<p>Tomcat believes that everyone is already familiar. As a free and powerful Java Web Server, I got a lot of Java enthusiasts, the latest version of Tomcat5 support servlet2.4 and jsp2.0, today I will use Tomcat5 and MS SQLServer 000 Start the database connection pool configuration together. Need to prepare 1, JDK I use version 1.4.012, Tomcat 5 I use 5.0.16 version download address: http://jakarta.apache.org/site/binindex.cgi3, mssql server 2000 database 4, MSSQL Server 2000 official JDBC Driver, you can download Microsoft's official website free download</p>
<p>After installation of the software installed, I will enter the configuration.</p>
<p>First, find the JDBC installation directory, put the msbase.jar and mssqlser.jar below the lib directory, Msutil.jar three files Copy to $ catalina_home / common / lib / ($ CATALINA_HOME representative is your Tomcat5 installation directory)</p>
<p>Second, use the text editor, I am using editplus to open the $ catalina_home / conf / server.xml file using EditPlus, find the following, paste the following code into the file</p>
<p><Context path = "/ dbtest" DOCBASE = "D: / RAUTINEE WORK / DB /" Debug = "5" reloadable = "true" crossContext = "true"></p>
<p><Logger classname = "org.apache.catalina.logger.filelogger" prefix = "localhost_dbtest_log." Suffix = ". Txt" TimeStamp = "true" /></p>
<p><Resource Name = "JDBC / TESTDB" Auth = "Container" type = "javax.sql.datasource" /></p>
<p><ResourceParams Name = "JDBC / TESTDB"> <parameter> <name> factory </ name> <value> org.apache.commons.dbcp.basicDataSourceFactory </ value> </ parameter> <! - maximum number of db connections in pool. Make sure youconfigure your mysqld max_connections large enough to handleall of your db connections. Set to 0 for no limit .--> <parameter> <name> maxActive </ name> <value> 100 </ value> </ parameter ></p>
<p><! - maximum number of idle db connections to retain in pool.set to 0 for no limit .--> <parameter> <name> maxidle </ name> <value> 30 </ value> </ parameter></p>
<p><-!.. Maximum time to wait for a dB connection to become availablein ms, in this example 10 seconds An Exception is thrown ifthis timeout is exceeded Set to -1 to wait indefinitely .--> <parameter> <name> maxWait </ Name> <value> 10000 </ value> </ parameter></p>
<p><! - MSSQLSERVER DB Username and Password for DB Connections -> <parameter> <name> UserName </ name> <value> sa </ value> </ parameter> <parameter> <name> password </ name> < Value> </ value> </ parameter></p>
<p><! - Class Name for MSSQLSERVER JDBC Driver -> <parameter> <name> driverclassname </ name> <value> com.microsoft.jdbc.sqlserver.sqlserverdriver </ value> </ parameter></p>
<p><! - the JDBC Connection Url for Connecting to your mssqlserver DB .--> <parameter> <name> URL </ name> <value> jdbc: Microsoft: SQLServer: // localhost: 1433; DatabaseName = Northwind </ value > </ parameter> </ resourceparams> </ context></p>
<p>Note: The password of the SA of my local database is empty, the database is Northwind, my directory name DBTEST, his directory is d: / Rautinee Work / DB / Open the Web.xml file below DBTest, with the following code Replace the original content</p>
<p><? XML Version = "1.0" Encoding = "ISO-8859-1"> <! doctype web-app public "- // sun microsystems, Inc.//dtd Web Application 2.3 // en" "http: // Java.sun.com/dtd/web-app_2_3.dtd"><Web-app><DescriptionMssql Server Test App </ description> <resource-ref> <Description> DB Connection </ description> <RES-REF- Name> JDBC / TESTDB </ RES-REF-NAME> <res-type> javax.sql.datasource </ res-type> <res-auth> container </ res-auth> </ resource-ref> </ web -app></p>
<p>OK, the configuration is complete, the following work is to write two files to test, whether the connection is successful.</p>
<p>Here I use http://jakarta.apache.org above example</p>
<p>The first is the bean file</p>
<p>Package foo;</p>
<p>Import javax.naming. *; import javax.sql. *; import java.sql. *;</p>
<p>Public class dbtest {</p>
<p>String foo = "not connection"; int BAR = -1;</p>
<p>Public void init () {Try {context ctx = new initialcontext (); if (ctx == null) throw new exception ("Boom - no context");</p>
<p>DataSource DS = (Datasource) CTX.lookup ("Java: Comp / Env / JDBC / TESTDB");</p>
<p>IF (ds! = null) {connection conn = ds.getConnection ();</p>
<p>IF (conn! = null) {foo = "got connection" conn.tostring (); statement stmt = conn.createstatement (); resultset = stmt.executeQuery ("Select * from orderers"); if (Rst.next ()) {foo = Rst.getstring ("Customerid"); bar = Rst.Getint ("ORDERID");} CONN.CLOSE ();}}} Catch (Exception E) {E.PrintStackTrace ();}}</p>
<p>Public string getfoo () {return foo;} public int getbar () {return bar;}}</p>
<p>Then INDEX.JSP file</p>
<p><html> <head> <title> db test </ title> </ head> <body> <% foo.dbtest tst = new foo.dbtest (); tst.init ();%></p>
<p><H2> MS SQL Server 2000 Java Search Results </ H2> Foo <% = TST.GETFOO ()%> Bar <% = TST.GetBar ()%></p>
<p></ body> </ html></p>
<p>Compile operation, if you don't accident, you should retrieve a record.</p>
<p>My IE shows MS SQL Server 2000 Java Search Resultsfoo Vinetbar 10248</p>
<p>OK, the formulation is successful!</p>
<p>Reference document: http://jakarta.apache.org/tomcat/tomcat-5.0-doc/jndi-datasource-examples-howto.html Above there is mysql and oracle8i connection tutorial, interested friends can go to see. ============================================================================================================================================================================================================= ==================================== BTW: Tomcat5 is likely to have problems, and the solution sees the http: // blog in my blog. 9cbs.net/neetsniffert/archive/2004/10/14/135817.aspx</p></div><div class="text-center mt-3 text-grey">
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