jboss配置 mysql数据库连接池

jboss配置 mysql数据库连接池实例
1 :配置:
   JDK 1.5
   JBoss4.0.4
   Mysql5.0
   Myeclipse 4.1
2:  建立数据库:
create database test;
use test;
DROP TABLE IF EXISTS `test`;
CREATE TABLE `test` (
  `Test_id` int(11) NOT NULL auto_increment,
  `Test_name` varchar(45) NOT NULL default '',
  `Test_password` varchar(45) NOT NULL default '',
  PRIMARY KEY  (`Test_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO `test` VALUES (1,'test','test'),(2,'test2','test');
3:Copy MySQL的JDBC驱动放到jboss-4.0.4\server\default\lib
  可到MYsql网站下载www.mysql.com
4:在 jboss-4.0.4\server\default\deploy下新建文件mysql-ds.xml
   可从jboss-4.0.4\docs\examples\jca copy 修改
   想配置多个连接池只要多加一个<local-tx-datasource></local-tx-datasource>
   其中内容如下:
  <?xml version="1.0" encoding="UTF-8"?>



<datasources>
  <local-tx-datasource>
    <jndi-name>test</jndi-name>
    <connection-url>jdbc:mysql://127.0.0.1:3306/test</connection-url><!?test为数据库名-->

    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <user-name>root</user-name><!?用户名以下相同-->
    <password>xxxxxxxx</password><!?密码以下相同-->

    <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
    
    
    

    
    <metadata>
       <type-mapping>mySQL</type-mapping>
    </metadata>
  </local-tx-datasource>
</datasources>

5:修改jboss-4.0.4\server\default\conf\ standardjaws.xml
<jaws>
<datasource>java:/test</datasource>
<type-mapping>mySql</type-mapping>
.....
</jaws>
修改jboss-4.0.4\server\default\conf\ standardjbosscmp-jdbc.xml
<jbosscmp-jdbc>
<defaults>
<datasource>java:/test</datasource>
<datasource-mapping>mySql</datasource-mapping>
</defaults>
</jbosscmp-jdbc>
修改jboss-4.0.4\server\default\conf\ login-config.xml
<application-policy name = "MySqlDbRealm">

<authentication>

<login-module code =

"org.jboss.resource.security.ConfiguredIdentityLoginModule"

flag = "required">

<module-option name ="principal">test</module-option>

<module-option name ="userName">root</module-option>

<module-option name ="password">xxxxxxxx</module-option>

<module-option name ="managedConnectionFactoryName">

jboss.jca:service=LocalTxCM,name=test

</module-option>

</login-module>

</authentication>

</application-policy>
6:Myeclispe 新建Web  project 命名为:UseTest
新建JAVA类DatabaseConn.java
package com.db;

import java.sql.*;

import javax.naming.*;
import javax.sql.DataSource;

public class DatabaseConn {

        public static synchronized Connection getConnection() {
            try {
                Context envCtx = new InitialContext();
                DataSource ds = (DataSource) envCtx.lookup("java:/test");
                return ds.getConnection();
            } catch (SQLException e) {
                System.out.println("数据源配置发生错误" + e.toString());
                return null;
            } catch (NamingException e2) {
                System.out.print("数据源配置" + e2.toString());
                return null;
            }

        }



    public static void close(ResultSet rs, Statement st, Connection conn) {
        try {
            if (rs != null)
                rs.close();
        } catch (SQLException ex) {
        }
        ;

        try {
            if (st != null)
                st.close();
        } catch (SQLException ex) {
        }
        ;

        try {
            if (conn != null)
                conn.close();
        } catch (SQLException ex) {
        }
        ;
    }
}
7:新建JSP页面:MyJsp.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GB2312"%>
<%@ page import="java.sql.*"%>
<%@ page import="com.db.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>

    <title>My JSP 'MyJsp.jsp' starting page</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">

    
  </head>

  <body>
    <%
Connection conn = DatabaseConn.getConnection();
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from test");
while(rs.next())
{
out.println(rs.getInt("Test_id"));
out.println(rs.getString("Test_name"));
out.println(rs.getString("Test_password"));

}
DatabaseConn.close(rs,stmt,conn);
%>
  </body>
</html>
8 :部署Web project
9:重新启动服务器
10:访问: http://127.0.0.1:8080/UseTest/MyJsp.jsp

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