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JavaWeb开发常用工具类图片验证码QQ邮箱验证码工具类生成少量个数字符串的工具类ps可以配合邮箱验证码使用持续更新...图片验证码package cn.liuweiwei.utils;import java.awt.Color;import java.awt.Font;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.FileOutputStream;import java.io.

验证码package cn.liuweiwei.utils;import java.awt.Color;import java.awt.Font;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.FileOutputStream;import java.io.OutputStream;import java.util.Random;import javax.imageio.Image

Java Webpackage cn.liuweiwei.service;import javax.servlet.*;import java.io.IOException;public class HelloServlet implements Servlet { @Override public void init(ServletConfig config) throws ServletException { } @Override public