本文:
進管理頁面,建立Datasource:JNDI Name: jdbc/mysql
Data Source URL: jdbc:mysql://localhost:3306/cs
JDBC Driver Class: com.mysql.jdbc.Driver
User Name: root
Password: ********
Max. Active Connections: 4
Max. Idle Connections: 2
Max. Wait for Connection: 5000
Validation Query:
%TOMCAT_HOME%\conf\web.xml,在</web-app>的前面添加:
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/mysql</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
%TOMCAT_HOME%\conf\Catalina\localhost的對應網站的檔案中,添加
<ResourceLink name="jdbc/mysql" global="jdbc/mysql" type="javax.sql.DataSourcer"/>
測試代碼
<!doctype html public "-//w3c//dtd html 4.0 transitional//en"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<%@ page import="java.sql.*"%>
<%@ page import="javax.sql.*"%>
<%@ page import="javax.naming.*"%>
<%@ page session="false" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title></title>
<%
out.print("我的測試開始");
DataSource ds = null;
try{
InitialContext ctx=new InitialContext();
ds=(DataSource)ctx.lookup("java:comp/env/jdbc/mysql");
Connection conn = ds.getConnection();
Statement stmt = conn.createStatement();
//提示:users必須是資料庫已有的表,
//這裡的資料庫前文提及的Data Source URL配置裡自主資料庫。
String strSql = " select * from users";
ResultSet rs = stmt.executeQuery(strSql);
while(rs.next()){
out.print(rs.getString(1));
}
out.print("我的測試結束");
}
catch(Exception ex){
out.print(“出現例外,資訊是:”+ex.getMessage());
ex.printStackTrace();
}
%>
</head>
<body>
</body>
</html>
類別: Java發布日期: 2007-6-26 13:41