程门立雪的博客

package org.sxj.utils;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;public class Md5Code { public String Md5(String plainText) { System.out.println("加密前:"+

 MongoDBUtil.javapackage com.jk.utils;import java.util.ArrayList;import org.bson.Document;import org.bson.types.ObjectId;import com.mongodb.MongoClient;import com.mongodb.MongoClientOption...

package com.jk.utils;import java.awt.Color;import java.awt.Font;import java.awt.Graphics;import java.awt.image.BufferedImage;import java.io.IOException;import java.util.Date;import java.util....

package com.jk.utils;import java.awt.Graphics2D;import java.awt.color.ColorSpace;import java.awt.image.BufferedImage;import java.awt.image.ColorConvertOp;import java.io.File;import java.io.File...

IPEntry.javapackage com.jk.utils.readDat;/** ** 一条IP范围记录，不仅包括国家和区域，也包括起始IP和结束IP * */public class IPEntry { public String beginIp; public String endIp; public String country; p...

package com.jk.utils;import java.net.InetAddress;import java.net.UnknownHostException;import javax.servlet.http.HttpServletRequest;public class IpUtil { /** * 获取当前网络ip * @param re...

pom.xml加入jar包<dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.2</version></dependency&gt...

新建一个servletpackage com.jk.servlet;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import java

package com.jk.utils;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;/** * * Copyright © 2017 金科教育. All rights reserved. * 类: Md5Util * 描述: MD5加密 * 作者: T

package com.jk.utils;import java.net.InetAddress;import java.net.UnknownHostException;import javax.servlet.http.HttpServletRequest;public class IpUtil { /** * 获取当前网络ip * @param re

/** * 项目名称:springMVN * 文件名称:ZipUtils.java * 包名:com.jk.user.untils * 创建日期:2017年7月24日下午3:27:39 * Copyright (c) 2017, guansipeng 807465327@qq.com All Rights Reserved. */ package com.jk.uti

package org.utils.mail;import java.io.File;import java.util.List;import java.util.Properties;import javax.mail.MessagingException;import javax.mail.internet.MimeMessage;import org.springframe

这个工具类是基于Jackson写的 所以用的时候需要引用jackson的jar包

package org.leopard.utils;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.util.ArrayList;import java.util.List;impo

package org.sxj.utils; import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.aw

RedisUitl.javapackage com.jk.util;import java.util.ArrayList;import java.util.HashSet;import java.util.List;import java.util.Map;import java.util.Set;import org.apache.commons.lang.StringU...