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Hibernate3 jndi 配置

2006-09-03 08:58 239 查看

1、配置tomact DataSource(apache-tomcat-5.5.20)

     在server.xml中添加

           <Host
          appBase="webapps"
          name="localhost">
          <Context path="/wapcp" docBase="wapcp" debug="5" reloadable="true" crossContext="true">
       <Resource name="jdbc/wapcp" auth="Container"
          type="javax.sql.DataSource" driverClassName="oracle.jdbc.driver.OracleDriver"
          url="jdbc:oracle:thin:@192.168.1.245:1521:orcl"
          username="Wap100" password="wap100" maxActive="20" maxIdle="10" maxWait="-1"/>
        </Context>
      </Host>

2、写个servlet测试DataSource

    public class Test {
public ResultSet connect(){
  try{
  Context ctx = new InitialContext();
  if(ctx==null)
   throw new Exception("no context");
  DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/wapcp");
  if(ds!=null){
   Connection conn = ds.getConnection();
   Statement st = conn.createStatement();
   ResultSet rs=st.executeQuery("select * from WAP_D_USER");
   return rs;

  }
  }catch(Exception e){
   e.printStackTrace();
  }
  return null;
}
public static void main(String args []){
  Test ts = new Test();
  ts.connect();
}
}

servlet:

public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {

  response.setContentType("text/html");
  PrintWriter out = response.getWriter();
  Test tss = new Test();
  ResultSet rs =tss.connect();

  out
    .println("<!DOCTYPE HTML PUBLIC /"-//W3C//DTD HTML 4.01 Transitional//EN/">");
  out.println("<HTML>");
  out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
  out.println(" <BODY>");
  try{
   while(rs.next()){
    out.print(rs.getString(1));
   }
  }catch(Exception e){
   e.printStackTrace();
  }
  out.print(this.getClass());
  out.println(", using the GET method");
  out.println(" </BODY>");
  out.println("</HTML>");
  out.flush();
  out.close();
}

3、配置hibernate.cfg.xml

   <property name="hibernate.show_sql">True</property>
<property name="connection.datasource">
  java:comp/env/jdbc/wapcp
</property>
<property name="dialect">
  org.hibernate.dialect.Oracle9Dialect
</property>

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标签： hibernate exception servlet html null wap

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