孔的博客

package com.kongjs.dcssl.utils.crypto;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.springframework.stereotype.Component;import javax.crypto.*;import java.nio.charset.StandardCharsets;import java.secu

这是我的网站kongjs.com刚开始写的工具类，用aes加密package com.kongjs.diary.utils;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import javax.crypto.*;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;

这是我的网站刚开始写的工具类，用rsa加密package com.kongjs.diary.utils;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import javax.crypto.BadPaddingException;import javax.crypto.Cipher;import javax.crypto.IllegalBlockSizeException;

Optional 对象是一种包装器对象，要么包装对象引用，要么nullOptional<String> optionalS = Optional.of(null); // 添加值为null时，抛出异常Optional<String> optionalSn = Optional.ofNullable(null); // 添加值为null时，产生一个空的Optional<String> empty = Optional.empty(); // 产生一个空的Strin

package com.kongjs.toutiao.common.enums;public enum HttpStatusCode { /** * http状态码枚举所有状态码注解 */ CONTINUE(100, "Continue", "请继续发送请求的剩余部分"), SWITCHING_PROTOCOLS(101, "Switching Protocols", "协议切换"), PROCESSING(102, "Processing", "请求

devServer: { disableHostCheck: true, host:'http://127.0.0.1',// 前端地址 port:'8020', proxy: { '/api':{ target:'http://127.0.0.1:8080',// 后端地址 changeOrigin:true, pathRe

验证码生成工具类package com.kongjs.utils;import java.awt.*;import java.awt.image.BufferedImage;import java.util.Random;public class YanCode { private static int width; private static int height; private static int codeLen; private int getR