jsp读取大对象CLOB并生成xml文件示例
所属分类：
网络编程 / JSP编程
阅读数：
1682
收藏 0赞 0分享
<%@ page contentType="text/html; charset=gb2312" %>
<%@ page info="database handler"%>
<%@ page import="java.io.*"%>
<%@ page import="java.net.*"%>
<%@ page import="java.lang.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.sql.*"%>
<%@ page import="javax.servlet.*"%>
<%@ page import="javax.servlet.http.*"%>
<%@ page import="oracle.sql.CLOB"%>
<%@ page import="oracle.jdbc.driver.OracleResultSet"%>
<html>
<head>
<meta content="text/html; charset=gb2312" http-equiv="content-type">
</head>
<body>
<%
int i=0;
String parID = request.getParameter("id_no");
String strSql;
String content="";
try{
String xmlFile = "/usr/local/tomcat/webapps/vehicles/test.xml";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String dburl="jdbc:oracle:thin:@192.168.15.250:1521:ycdb";
Connection con=DriverManager.getConnection(dburl,"training","deep1704sea");
Statement stmt=con.createStatement();
//使用流读取CLOB或BLOB列
strSql = "select xmlgen.getxml('select * from account_holder where id_no=''0001''') from dual ";
ResultSet rs=stmt.executeQuery(strSql);
if(rs.next()){
CLOB clob = ((OracleResultSet)rs).getCLOB(1);
if(clob!=null){
Reader is = clob.getCharacterStream();
BufferedReader br = new BufferedReader(is);
String s = br.readLine();
while(s!=null){
//byte[] temp = s.getBytes("iso-8859-1");
//s = new String(temp);
content += s;
s=br.readLine();
}
}
}
//out.println(content);
//将从数据库中读出的内容写到文件中
FileOutputStream fo = new FileOutputStream(xmlFile);
PrintStream so = new PrintStream(fo);
so.println(content);
so.close();
rs.close();
stmt.close();
con.close();
}catch(Exception e){
out.println(e);
}
%>
</body>
</html>
几种防止表单重复提交的方法
表单重复提交是在多用户Web应用中最常见的一个问题，很多场合都会遇到这种情况，下面与大家分享下防止表单重复提交的几种策略
收藏 0赞 0分享
jsp中文显示问号问题解决方法
jsp中想要输出的中文被显示成问号？在eclipse-windows- preferences中搜索jsp，Encoding选项中选择 Chinese，此问题便可解决
收藏 0赞 0分享
