Text If you park your car in the wrong place, a traffic policeman will soon find it. You will be very lucky if he lets you go without a ticket. However this does not always happen. Traffic police are sometimes very polite. During a holiday in Sweden,…

lesson 16 Mary had a little lamb a little + 可数 小的;+ 不可数 少量的 对于动物在幼时都有不同的称呼: calf 小牛 lamb 羊羔 piglet 小猪 kitty 小猫 puppy 小狗 foal 马仔 chick 小鸡 duckling 小鸭子 tiny: very small possess 相比have own比较正式 possession(s) 财产 personal possessions treasured/prized/preci…

这个课程的参考视频和图片来自youtube. 主要学到的知识点有: We want to handle the bad Error. (e.g bad input / bugs in program) Error: a type of Exception   e.g   File I/O;   User Input, out of control. An example that handle the wrong input and out of range input. 1. First we…

What is the author's main argument about the modern city? In the organization of industrial life the influence fo the factory upon the physiological and mental state of the workers has been completely neglected. Mordern industry is based on the conce…

全文转载自 Scott Hanselman的博文. I bought a 3D printer on Friday, specifically a Printrbot Simple Metal from Amazon for US$599. I did a few days of research, looking at all the consumer models under $1000. Some were enclosed, others not. Some made of wood,…

https://developer.android.com/training/volley/request.html Request JSON Volley provides the following classes for JSON requests: JsonArrayRequest-A request for retrieving a JSONArray response body at a given URL. JsonObjectRequest-A request for retri…

1.通过request获得请求行 获得客户端的请求方式:String getMethod() 获得请求的资源: String getRequestURI()   StringBuffer getRequestURL()   String getContextPath() ---web应用的名称 String getQueryString() ---- get提交url地址后的参数字符串 注意:request获得客户机(客户端)的一些信息 request.getRemoteAddr() --- 获…

一.问题由来 自己目前在做一个小程序的后台,已经写好了项目中的很多的接口,同时也在进行一些修改,比如添加拦截器,统一校验一个固定的参数是否正确. 在自己添加拦截器之前,这些接口都可以正常访问,可是在添加拦截器之后,再次访问接口就出现异常,异常信息为Required request body is missing 让我有些疑惑,之前还好好的,怎么突然就访问报错了呢?这个错误简直莫名其妙,感觉毫无道理,可是问题却实实在在出现. 二.问题分析 对于出现的这个问题,我首先是把错误信息往百度里面进行搜索,…

React.js 小书 Github 关于作者 这是一本关于 React.js 的小书. 因为工作中一直在使用 React.js,也一直以来想总结一下自己关于 React.js 的一些知识.经验.于是把一些想法慢慢整理书写下来,做成一本开源.免费.专业.简单的入门级别的小书,提供给社区.希望能够帮助到更多 React.js 刚入门朋友. 由于水平有限,编写的过程难免会有诸多错误,也希望大家在看的过程中发现了问题,可以在 Github 上给该项目发 Pull Request.衷心希望可以有更多的人…

1．A private conversation Last week I went to the theatre. I had a very good seat. The play was very interesting. I did not enjoy it. A young man and a young woman were sitting behind me. They were talking loudly. I got very angry. I could not hear th…