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2022-06-23

解决HTML2CANVAS截图不全问题
解决HTML2CANVAS截图不全问题
HTML2CANVAS截图有时候会发现不全问题如果出现html2canvas截图后，图片上面很多空白，那应该是滚动条引起的。这时候需要先把滚动条设置为最顶部,然后再进行截图//必须滚动到头部,不然截图出来头部会出现很多空白 window.scrollTo(0, 0); setTimeout(()=>{ //延时毫秒再进行截图 },100)用上面的方式基本就能解决这个问题了。
2022-06-23

日志

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2022年06月23日
2,199 阅读
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2022-05-17

git clone 解决Permission Denied (publickey)问题
git clone 解决Permission Denied (publickey)问题
git clone 解决Permission Denied (publickey)问题npm install 安装包也会碰到类似的情况，解决方法都一样；本地git bash 使用git clone git@github.com:*.git方式下载github代码至本地时需要依赖ssh key，遇到权限不足问题时一般都是SSH key失效或者SSH key不存在，重新创建SSH key一般就可以解决问题；步骤一、检查本地ssh key是否存在windows下 开始 -- 搜索框输入 git bash，打开git bash窗口git base窗口中输入指令 ls ~/.ssh/ 来检查ssh key是否存在如果key不存在则按照步骤二重新生成，ssh key已存在则跳过步骤二，执行步骤三步骤二、生成ssh key继续步骤一的git bash窗口执行指令：ssh-keygen -t rsa -b 2048 -C "你自己的邮箱地址"修改邮箱地址为你自己的邮箱地址，注意此处邮箱地址前后的双引号为英文格式双引号；指令执行后页面提示：Generating public/p...
2022-05-17

日志

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2022年05月17日
1,818 阅读
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2022-05-13

Mysql实现排行榜sql语句
Mysql实现排行榜sql语句
Mysql实现排行榜sql语句直接上代码-- 按余额查询排行榜 SELECT m.id, m.nickname, m.openid, m.avatar, @rownum := @rownum + 1 AS rownum FROM ( SELECT @rownum := 0 ) r, ( SELECT * FROM `tbl_member` WHERE credit> 0 ORDER BY credit DESC, created_at DESC ) AS m -- 查询某个用户的余额 排行名词 SELECT * FROM ( SELECT m.id, m.nickname, m.openid, m.avatar, @rownum := @rownum + 1 AS rownum FROM ( SELECT @rownum := 0 ) r, ( SELECT * FROM `tbl_member` WHERE credi...
2022-05-13

日志

1,522 阅读
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2022年05月13日
1,522 阅读
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2022-05-13

PHP yield生成器的使用，占用非常少量的内存
PHP yield生成器的使用，占用非常少量的内存
直接上代码，模拟读取大数据csv文件 /** * 采用 Yield生成器读取数据（推荐使用） * @param $resoure * @return Generator */ function readCsvByYield($resoure) { while (feof($resoure) === false) { yield fgetcsv($resoure); } } /** * 采用 原始数组读取数据（不推荐，文件特别大，会导致内存移除！！！） * @param $resoure * @return array */ function readCsvByArray($resoure) { $readCsvDatas = []; while (feof($resoure) === false) { $readCsvDatas[] = fgetcsv($resoure); } return $readCsvDatas; } try { //返回当前分配给你的 PHP 脚本...
2022-05-13

日志

1,493 阅读
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2022年05月13日
1,493 阅读
0 评论
2022-05-08

VUE安装 postcss-px-to-viewport，将px单位转换为视口单位的 (vw, vh, vmin, vmax)

VUE安装 postcss-px-to-viewport，将px单位转换为视口单位的 (vw, vh, vmin, vmax)
VUE安装 postcss-px-to-viewport，将px单位转换为视口单位的 (vw, vh, vmin, vmax)先安装 postcss,直接 npm install postcss --save-dev安装 postcss-px-to-viewport 这里，使用github上的版本，因为可以指定目录或文件才进行转换// 需要使用include属性: npm i https://github.com/evrone/postcss-px-to-viewport --save-dev // 不需要使用include属性: npm install postcss-px-to-viewport --save-devnpm安装报错情况... npm ERR! error: RPC failed; curl 28 OpenSSL SSL_read: Connection was reset, errno 10054 npm ERR! fatal: expected flush after ref listing ...可以尝试用下面的两个设置解决git config --glo...
2022-05-08

VUE相关

3,818 阅读
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2022年05月08日
3,818 阅读
0 评论
2022-04-17

GO做WEB服务实现文件上传功能
GO做WEB服务实现文件上传功能
GO做WEB服务实现文件上传功能直接上代码：package main import ( "fmt" "io" "log" "mime/multipart" "net/http" "os" "strconv" "strings" "time" ) //首页 func index(w http.ResponseWriter, r *http.Request) { _, err := fmt.Fprintln(w, "我是首页") if err != nil { log.Fatalln(err) } } //文件上传 func upload(w http.ResponseWriter, r *http.Request) { //读取表单中提交过来的文件，这个只能上传...
2022-04-17

GO相关

1,726 阅读
0 评论
2022年04月17日
1,726 阅读
0 评论
2022-04-03

Mysql插入数据，如果存在则跳过不存在则插入
Mysql插入数据，如果存在则跳过不存在则插入
Mysql插入数据，如果存在则跳过不存在则插入INSERT INTO `tp_hm_staff` (realname, source_type,create_time) SELECT '小明','技术部',1648958570 FROM DUAL WHERE NOT EXISTS(SELECT realname,source_type FROM tp_hm_staff WHERE realname= '小明' AND source_type='技术部');上面意思就是，插入数据 realname=小明，source_type=技术部，create_time=1648958570，如果 realname=小明，source_type=技术部查询没有查询到数据，则正常插入。
2022-04-03

日志

1,308 阅读
0 评论
2022年04月03日
1,308 阅读
0 评论
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  1. slot demo
    2025-01-13

    Thanks for finally writing about >个人介绍 - Dcr163的博客

  2. 陌天
    2025-01-09

    哟呵，上班还有空更新，还写那么多，是不是工作量不饱和
  3. Kerrie Bostick
    2024-12-28

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  4. Norma Gainey
    2024-09-21

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  5. Amber Powlett
    2024-05-09

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    However, what about this? what if you added a little content? I ain't saying your content isn't good, however what if you added something that makes people desire more? I mean Dcr163的博客 is a little plain. You might peek at Yahoo's home page and note how they create article titles to grab viewers to open the links.
    You might add a related video or a related picture or two to grab people interested about everything've written. In my opinion, it might bring your website a little livelier.

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