excel解决方法_第2页-阿里云

读取Excel文件时出现null的解决方法

　　在以往读取Excel文件时常常出现读取某些字段为null值，其实是有值，原因是读取文件时，Excel会以第一行的数据类型为参考，如果后边的与其不一致，则会出现些问题。　　以下是一个解决方案，Excel文件的连接串写作如下。据说可以强制数据为字符串，具体我没有再测试。仅供参考。　　string...

共有11条

< 1 2 >

跳转至： GO

更新时间 2024-02-27 22:31:17

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB19QzJrA9l0K4jSZFKXXXFjpXa-200-200.png","contentLink":"https://www.aliyun.com/product/ai/alimt/document_translation","title":"文档翻译","des":"阿里翻译依托先进的自然语言处理技术和海量数据优势实现多领域引擎沉淀，应用于文档翻译产品，实现多领域引擎灵活选择、多类型文档格式覆盖，译后文档保持原格式排版。并提供在线编辑平台，可以对译后内容进行在线编辑。","link1":"https://www.aliyun.com/product/ai/alimt/document_translation?spm=5176.20839425.J_9950457230.1.3f7d542e3MYBUu","btn1":"产品详情页","link2":"https://mt.console.aliyun.com/basic","btn2":"产品控制台","btn3":"产品咨询","link3":"https://chatbot.aliyuncs.com/intl/index.htm?from=ozKj2bp5h6","infoGroup":[{"infoName":"产品入门","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/164151.html","firstContentName":"产品简介","lastContentName":"接入指南","lastContentLink":"https://help.aliyun.com/document_detail/163814.html?spm=a2c4g.11186623.0.0.1985273fU6aiNL"}},{"infoName":"功能推荐","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/418510.html?spm=a2c4g.11186623.0.0.7c9b3e06V47zGV","firstContentName":"在线翻译&编辑指南","lastContentName":"在线翻译平台","lastContentLink":"https://alynx-saas.alifanyi.com/saas/mt.html?clientType=aliyun&tab=dt"}},{"infoName":"最新活动","infoContent":{"firstContentName":"11月活动优惠","lastContentName":"","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=alimt_dt_bag#/buy","lastContentLink":""}},{"infoName":"热门产品","infoContent":{"firstContentName":"新冠医疗专业翻译平台","firstContentLink":"https://medtrans.damo.alibaba.com/medtrans.htm?spm=5176.14040699.4903150730.4.741b360aG7GJwJ"}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB19QzJrA9l0K4jSZFKXXXFjpXa-200-200.png","contentLink":"https://www.aliyun.com/product/ai/alimt/document_translation","title":"文档翻译","des":"阿里翻译依托先进的自然语言处理技术和海量数据优势实现多领域引擎沉淀，应用于文档翻译产品，实现多领域引擎灵活选择、多类型文档格式覆盖，译后文档保持原格式排版。并提供在线编辑平台，可以对译后内容进行在线编辑。","link1":"https://www.aliyun.com/product/ai/alimt/document_translation?spm=5176.20839425.J_9950457230.1.3f7d542e3MYBUu","btn1":"产品详情页","link2":"https://mt.console.aliyun.com/basic","btn2":"产品控制台","btn3":"产品咨询","link3":"https://chatbot.aliyuncs.com/intl/index.htm?from=ozKj2bp5h6","infoGroup":[{"infoName":"产品入门","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/164151.html","firstContentName":"产品简介","lastContentName":"接入指南","lastContentLink":"https://help.aliyun.com/document_detail/163814.html?spm=a2c4g.11186623.0.0.1985273fU6aiNL"}},{"infoName":"功能推荐","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/418510.html?spm=a2c4g.11186623.0.0.7c9b3e06V47zGV","firstContentName":"在线翻译&编辑指南","lastContentName":"在线翻译平台","lastContentLink":"https://alynx-saas.alifanyi.com/saas/mt.html?clientType=aliyun&tab=dt"}},{"infoName":"最新活动","infoContent":{"firstContentName":"11月活动优惠","lastContentName":"","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=alimt_dt_bag#/buy","lastContentLink":""}},{"infoName":"热门产品","infoContent":{"firstContentName":"新冠医疗专业翻译平台","firstContentLink":"https://medtrans.damo.alibaba.com/medtrans.htm?spm=5176.14040699.4903150730.4.741b360aG7GJwJ"}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}