《JSP》JSP学习（六）——统计单词个数

一、单词个数统计页面

     博主下载的单词表为CET6核心词汇表，一共601个单词，即导入数据库中的表“cet6”，统计表中以“a、b······z”开头的单词个数，并以表格的形式显示在网页上。程序主要通过SQL语句SELECT 进行查询，将符合条件的单词提取，再利用ResultSet函数中的next方法对提取出来的单词遍历，每遍历一遍，整数型变量“rscount”+1，最终的计数便是单词个数。

cet6：

count.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>  
<%@ page import="com.mysql.jdbc.Driver" %>   
<%@ page import="java.sql.*" %>








 
 
 
 
统计结果
<%	
	//加载驱动程序   
	String driverName="com.mysql.jdbc.Driver";   
	//数据库信息  
	String userName="root";   
	//密码   
	String userPasswd="yle30268";   
	//数据库名   
	String dbName="tables";   
	//表名    
	
	String url="jdbc:mysql://localhost:3306/"+dbName+"?user="+userName+"&password="+userPasswd;   
	Class.forName("com.mysql.jdbc.Driver").newInstance();   
	Connection conn=DriverManager.getConnection(url);   
	Statement stmt = conn.createStatement();
	String initial[] = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};
	for(int i=0;i


<%
}
%>


<%=initial[i]%>为首的单词数：<%=rscount %>

二、统计演示

     根据上图“cet6”可以看出一共有601条单词记录，所以统计出来的结果之和也应该是601个单词，其中以“z”开头的单词只有一个。