cheng_hai_yan的博客

BufferedReader.readLine()读取第一行会出现bug，首行第一个字符会是一个空字符 BufferedReader is =new BufferedReader(new InputStreamReader(new ileInputStream(file))); String str =is.readLine() char c = ...

https://www.cnblogs.com/happyfans/p/4486010.htmljava验证码的实现

package edu.dgut.mvc.utils;import java.sql.*;public class JDBCFacade { private Connection conn = null; private Statement statement = null; public void open(String jdbcUrl,String userName,Str...