①杯空氣的博客

1、需要的jar包maven下载地址  com.google.zxing core 2.2 com.google.zxing javase 2.2 2、二维码Utilpackage com.qn.utils;import java.io.File;i

1、需要的jar包 jar 包的 maven地址：  com.thoughtworks.xstream xstream 1.4.9 2、实体类处理package com.qn.model;import java.io.Serializable;import com.thoughtworks.x

一、生成Excel1、导入jar包maven地址 <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <ve...

1、初始化COSClientimport com.qcloud.cos.COSClient;import com.qcloud.cos.ClientConfig;import com.qcloud.cos.auth.BasicCOSCredentials;import com.qcloud.cos.auth.COSCredentials;import com.qcloud.cos....