Java数据库连接与异常处理-优快云博客

本文链接：https://blog.youkuaiyun.com/liangyicool/article/details/1658964

本文介绍了Java中如何实现数据库连接，并展示了如何使用Oracle数据库驱动进行具体操作。此外，还探讨了关键字高亮显示的实现方式及如何在JSP页面中处理并显示错误信息。

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// 关键字返红

 if(keyword!=null)
 {

 title = title.replaceAll(keyword,""+keyword+"") ;
 author = author.replaceAll(keyword,""+keyword+"") ;
 content = content.replaceAll(keyword,""+keyword+"") ;
 }

// 有错误，要进行打印输出
if(request.getAttribute("errors")!=null)
 {

 List all = (List)request.getAttribute("errors") ;
 Iterator iter = all.iterator() ;
 while(iter.hasNext())
 {

 <li><%=iter.next()%>

 }
 }

//数据库连接bean
package cn.mldn.lxh.note.dbc ;

import java.sql.* ;

public class DataBaseConnection
{
private String DBDRIVER   = "oracle.jdbc.driver.OracleDriver" ;
private String DBURL   = "jdbc:oracle:thin:@localhost:1521:MLDN" ;
private String DBUSER   = "scott" ;
private String DBPASSWORD  = "tiger" ;
private Connection conn   = null ;

public DataBaseConnection()
{
  try
  {
   Class.forName(DBDRIVER) ;
   this.conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;
  }
  catch (Exception e)
  {
  }
}
public Connection getConnection()
{
  return this.conn ;
}
public void close()
{
  try
  {
   this.conn.close() ;
  }
  catch (Exception e)
  {
  }
}
};