JBoss配置Mysql连接池

对于jsp的web程序来说，配置连接池是必不可少的。JBoss配置MySql的连接池，可以查看官方文档，地址为： [url]http://docs.jboss.org/jbossas/getting_started/v4/html/db.html[/url]。

我这里的配置分为以下几步：

第一步：从jboss-4.0.2\docs\examples\jca目录下的mysql-ds.xml复制文件到D:\jboss-4.0.2\server\default\deploy目录下并编辑如下：

   
   
   
   

    
    
    
    <?xml version="1.0" encoding="UTF-8"?>
   
   
   
   
   
   
   
   

    
    
    
    <!-- $Id: mysql-ds.xml,v 1.3.2.1 2004/12/01 11:46:00 schrouf Exp $ -->
    
    
    
    
<!--  Datasource config for MySQL using 3.0.9 available from:
    
    
    
    

    [url]http://www.mysql.com/downloads/api-jdbc-stable.html[/url]
    
    
    
    
-->
   
   
   
   
   
   
   
   

    
    
    
    <datasources>
    
    
    
    
  <local-tx-datasource>
    
    
    
    
    <jndi-name>MySqlDS</jndi-name>
    
    
    
    
    <connection-url>jdbc:mysql://localhost:3306/test</connection-url>
    
    
    
    
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    
    
    
    
    <user-name>root</user-name>
    
    
    
    
    <password>root</password>
    
    
    
    
    <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
    
    
    
    
    <!-- sql to call when connection is created
    
    
    
    
    <new-connection-sql>some arbitrary sql</new-connection-sql>
    
    
    
    
      -->
    
    
    
    
    <!-- sql to call on an existing pooled connection when it is obtained from pool 
    
    
    
    
    <check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql>
    
    
    
    
      -->
   
   
   
   
   
   
   
   

    
    
    
        <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->
    
    
    
    
    <metadata>
    
    
    
    
       <type-mapping>mySQL</type-mapping>
    
    
    
    
    </metadata>
    
    
    
    
  </local-tx-datasource>
    
    
    
    
</datasources>
   
   
   
   
   
   
   
   

    
    
    
    

      第二步：编辑jboss-4.0.2\server\default\conf下的三个文件：standardjbosscmp-jdbc.xml，standardjaws.xml，login-config.xml 
    
    
    
    
    

      standardjbosscmp-jdbc.xml修改部分： 
    
    
    
    
    

      <datasource>java:/MySqltDS</datasource> 
     
      <datasource-mapping>mySQL</datasource-mapping> 
    
    
    
    
    

      standardjaws.xml修改部分： 
    
    
    
    
    

      <datasource>java:/MySqltDS</datasource> 
     
   <type-mapping>mySQL</type-mapping> 
    
    
    
    
    
 
     

       login-config.xml修改部分：（可以添加这一段，复制一段进行修改） 
     
 
     

       <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">root</module-option> 
      
             <module-option name = "managedConnectionFactoryName">jboss.jca:service=LocalTxCM,name=MySqlDS</module-option> 
      
          </login-module> 
      
       </authentication> 
      
    </application-policy> 
     
 
     
 
      

        第三步：重启jboss没有出现异常，就会有如下显示，证明配置正确： 
      
 
      
 
        
      
 
      

        第四步：如果你还步放心，现在写个servlet试试吧： 
      
 
      

        response.setContentType("text/html;charset=gb2312"); 
       
  PrintWriter out = response.getWriter(); 
       
  try { 
       
   // Put your code here 
       
   Context cx  = new InitialContext(); 
       
   Object obj = cx.lookup("java:/MySqlDS"); 
       
   DataSource ds = (DataSource)obj; 
       
   Connection connect = ds.getConnection(); 
       
   Statement stmt = connect.createStatement(); 
       
   ResultSet rs = stmt.executeQuery("select * from customers"); 
       
   while(rs.next()){ 
       
    out.println(rs.getString("name")); 
       
   } 
       
  } catch (NamingException e) { 
       
   e.printStackTrace(); 
       
  } catch(SQLException e1){ 
       
   e1.printStackTrace(); 
       
  } 
       
  out.flush(); 
       
  out.close(); 
      
 
     
 
    
   
   
   
   

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