修正城市导航没有城市数据默认显示"北京"城市，在个别浏览器空白的情况 更新天气预报组件的api，修正无法读取天气的错误 更新模板js 文件，原115搜索修改为116搜索 修正部分BUG-Fixed city navigation no city data show the default "Beijing" city, in some blank browser Update of weather forecast componen

java文件的读写的定义，读写的几种方法，以及文件相关操作-java file read and write the definition of several methods of reading and writing, and file related operations

A small code for read all the lines a file at once-A small code for read all the lines a file at once

This code implement semaphore, using 2 proccess, which first is write string consanant values to txt-file, second read txt-file-This code implement semaphore, using 2 proccess, which first is write string consanant values to txt-file, second read t