qq_28461661的博客

SpringBean工具类

验证码

【代码】redis序列化工具。

【代码】mapperFacade 类型装换。

思路例如我的密码是123，我生成的随机盐是abc。那我就用123abc去加密。得到密文为 1a2b3c。但是我存数据库的时候我存密文加盐，我存1a2b3c_abc。当我再拿123去解密的时候，我就根据用户名去数据库查找密码。得到密码为1a2b3c_abc。然后我根据规则得到盐是abc。然后再拿新的密码和盐去加密再加上盐，看看是不是个数据库密码一值。代码事例用了hutool的依赖 public static void main(String[] args) { String

CURRENT_TIMESTAMPcreate_timeupdate_time

思路生产图形验证码，返回给前端，并将图片验证码的值保存到redis中，并设置过期时间点击登录按钮，去redis中获取图形验证码。并判断时候过期通过则放行依赖 <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.3.4</v

自己稍微改一下package com.wondertek.jtzq.common.utils;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.*;import java.util.List;import java.util.zip.ZipEntry;import java.util.zip.ZipOutputStream;/*

package com.mayikt.base;import com.mayikt.constants.Constants;import lombok.Data;import org.springframework.stereotype.Component;@Data@Componentpublic class BaseApiService<T> { public ...

import java.util.ArrayList;import com.alibaba.fastjson.JSONObject;import com.fasterxml.jackson.annotation.JsonInclude;@JsonInclude(JsonInclude.Include.NON_NULL)public class ResultBean { pr...

package com.wujian.util;import org.apache.poi.hssf.usermodel.*;import org.apache.poi.poifs.filesystem.POIFSFileSystem;import java.io.*;import java.text.DecimalFormat;import java.text.SimpleDate...

import com.google.common.collect.Lists;import com.google.common.collect.Maps;import com.wondertek.pis.bean.vo.ResourceTreeVO;import java.util.List;import java.util.Map;/** * 根据资源菜单Model,构建 t...

import java.io.IOException;import java.io.InputStream;import java.time.LocalDateTime;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java...

package com.wondertek.pis.util;import java.lang.reflect.Constructor;import java.lang.reflect.Field;import java.lang.reflect.Method;import java.time.LocalDate;import java.time.LocalDateTime;impo...

import java.io.UnsupportedEncodingException;import java.net.URLEncoder;import java.util.ArrayList;import java.util.Collections;import java.util.HashMap;import java.util.Iterator;import java.util...

package com.wj.jpademo.jpademo.service;import java.util.List;import java.util.Map;import java.util.Set;import java.util.concurrent.TimeUnit;import org.springframework.beans.factory.annotation.A...

package com.wondertek.pis.util; import java.sql.Timestamp;import java.text.ParseException;import java.text.ParsePosition;import java.text.SimpleDateFormat;import java.util.ArrayList;import java...

获取浏览器信息 /** * 获取浏览器信息 * * @return */ public String webBrowserInfo(HttpServletRequest request) { // 获取浏览器信息 Browser browser = UserAgent.parseUserAgentString(req...

cookie工具类public final class CookieUtils { /** * 得到Cookie的值, 不编码 * * @param request * @param cookieName * @return */ public static String getCookieValue(HttpServletRequest request, Str...

生成验证码@Controllerpublic class VerifyController { /** * 生成验证码 */ @RequestMapping(value = "/getVerify") public void getVerify(HttpServletRequest request, HttpServletResponse response) { try {...

redis事务和数据库事务保持一致@Component@Scope(ConfigurableListableBeanFactory.SCOPE_PROTOTYPE)public class RedisDataSoureceTransaction { @Autowired private RedisUtil redisUtil; /** * 数据源事务管理器 */ @Autow...

生成token存入redispackage com.mayikt.core.token;import com.mayikt.core.utils.RedisUtil;import org.apache.commons.lang3.StringUtils;import org.springframework.beans.factory.annotation.Autowired;impor...

类型转换工具public class TypeCastHelper { private static final String DEFAULT_STRING = ""; private static final int DEFAULT_INT = 0; private static final long DEFAULT_LONG = 0L; private static final do...

dto转do和do转dto工具类package com.mayikt.core.bean;import org.springframework.beans.BeanUtils;public class MeiteBeanUtils<Dto, Do> { /** * dot 转换为Do 工具类 do转化dto * * @param dtoEntity * ...

package com.example.demo.util.security.RSA;import org.apache.commons.codec.binary.Base64;import javax.crypto.Cipher;import java.security.*;import java.security.interfaces.RSAPrivateKey;import j...

package com.example.demo.util.security.RSA;import java.security.NoSuchAlgorithmException;import java.security.SecureRandom;import java.util.logging.Level;import java.util.logging.Logger;import j...

public class MD5Util {public final static String MD5(String s) { char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; try { byte[] btInput = s.ge...

public void exportExcel(HttpServletRequest request,HttpServletResponse response) throws UnsupportedEncodingException{ //一、从后台拿数据 if (null == request || null == response) { return; } List&l...

public class ClassUtil {/** * 取得某个接口下所有实现这个接口的类 */public static List<Class> getAllClassByInterface(Class c) { List<Class> returnClassList = null; if (c.isInterface()) { // 获取当前的包名...

package util.DateUtil;import java.text.DateFormat;import java.text.DecimalFormat;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;public class DateUtil { s...

这是一个自治的JSON的工具类，里面有小例子package com.leyou.common.utils;import com.fasterxml.jackson.core.JsonProcessingException;import com.fasterxml.jackson.core.type.TypeReference;import com.fasterxml.jackson.da...

package com.leyou.common.utils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.Htt...

package com.leyou.common.utils;import java.lang.management.ManagementFactory;import java.net.InetAddress;import java.net.NetworkInterface;/** * <p>名称：IdWorker.java</p> * <p>描...

package com.leyou.common.utils;import java.math.BigDecimal;import java.math.RoundingMode;import java.util.ArrayList;import java.util.List;import java.util.Random;import java.util.regex.MatchRes...