很简单,分数全部给我吧
在\server\default\deploy下,新建mysql-ds.xml文件,其内容如下<datasources>
<local-tx-datasource>
<jndi-name>MySqlDS</jndi-name>
<connection-url>jdbc:mysql://mysql-hostname:3306/jbossdb</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<user-name></user-name>
<password></password>
</local-tx-datasource>
</datasources>就以上面MySqlDS为jndi-name,下面是连接的方法Context initCtx = new InitialContext();
//这里和tomcat不一样,不需要java:comp/env
DataSource ds = initCtx.lookup(java:/MySqlDS);
if (ds != null)
Connection conn = ds.getConnection();
在\server\default\deploy下,新建mysql-ds.xml文件,其内容如下<datasources>
<local-tx-datasource>
<jndi-name>MySqlDS</jndi-name>
<connection-url>jdbc:mysql://mysql-hostname:3306/jbossdb</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<user-name></user-name>
<password></password>
</local-tx-datasource>
</datasources>就以上面MySqlDS为jndi-name,下面是连接的方法Context initCtx = new InitialContext();
//这里和tomcat不一样,不需要java:comp/env
DataSource ds = initCtx.lookup(java:/MySqlDS);
if (ds != null)
Connection conn = ds.getConnection();
Oracle的配置方法
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:@172.28.122.49:1521:cpdb</value>
</parameter> <parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>SQL Server的配置方法
<parameter>
<name>url</name>
<value>jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=pubs</value>
</parameter> <parameter>
<name>driverClassName</name>
<value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value>
</parameter>
注意:
SQL Server包的取得方式
从http://www.microsoft.com/downloads/details.aspx?FamilyID=4f8f2f01-1ed7-4c4d-8f7b-3d47969e66ae&DisplayLang=en#filelist下载"Microsoft SQL Server 2000 Driver for JDBC",并安装,得到msbase.jar,mssqlserver.jar和msutil.jar三个文件,将三个文件COPY到TOMCAT 4.1下common\lib文件夹中Oracle包的取得方式
将\ORANT\jdbc\lib\classes12.jar COPY到TOMCAT 4.1下common\lib文件夹中2.Oracle与SQL Server在使用JDBC时的区别:
Oracle
String url_ = "172.28.122.49:1521:cpdb";
String id_ = "cu01";
String pass_ = "abc";
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@" + url_, id_, pass_);SQL Server
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:microsoft:sqlserver://BLUESKY:1433;User=sa;Password=sa;DatabaseName=sitedb);
Class.forName(driverName);
Connection conn = DriverManager.getConnection(connURL);3.例子说明
例子中:tomcattry.xml是Tomcat的配置文件, sample是一个连接池servlet端代码(通过comming.html启动servlet)本例子环境
OS: Windows2000
JDK: 1.4.2_04
IDE: Eclipse3.0
Web Server: Tomcat4.1.27
Database: Oracle9i数据库表结构
表名:
test
结构:
USERNAME NOT NULL VARCHAR2(10)
PASSWORD VARCHAR2(10)
建表语句:
create table test(username varchar(10) primary key,password varchar(10));
你做EJB的话只要一个JBOSS就够了
我知道jboss3.2.5内建了(Apache Tomcat/5.0.26),但是,我们以前的项目用的是resin2.1.9应用服务器,单纯的jsp/servlet,而且已经运行的良好,大范围内使用了。现在要做分布式计算,只能采用EJB技术,但又想尽量保持最少的变化,所以想知道jboss能不能和原先的resin配合,而不用jboss自带的tomcat。
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: Could not create connection; - nested throwable: (java.sql.SQLException: Cannot connect to MySQL server on mysql-hostname:3306. Is there a MySQL server running on the machine/port you are trying to connect to? (java.net.UnknownHostException)); - nested throwable: (org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: Cannot connect to MySQL server on mysql-hostname:3306. Is there a MySQL server running on the machine/port you are trying to connect to? (java.net.UnknownHostException)))
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.index_jsp._jspService(index_jsp.java:101)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
root cause org.jboss.util.NestedSQLException: Could not create connection; - nested throwable: (java.sql.SQLException: Cannot connect to MySQL server on mysql-hostname:3306. Is there a MySQL server running on the machine/port you are trying to connect to? (java.net.UnknownHostException)); - nested throwable: (org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: Cannot connect to MySQL server on mysql-hostname:3306. Is there a MySQL server running on the machine/port you are trying to connect to? (java.net.UnknownHostException)))
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:106)
org.apache.jsp.index_jsp._jspService(index_jsp.java:66)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.26 logs.
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