Use of open source free interface

1, on the Internet to find free open source interface (HTTPS://WWW.JUHE.CN/DOCS/INDEX/SORTBY/4, I usually find open source interface on this site).

2, get key, such as Http://op.juhe.cn/onebox/weather/query?cityname= Nanchang &= you apply for the key, is the front through the transfer of an address, the back of the backstage.

3, this will return a JSON, you can use the background java with jsonobject Jsonobject = Jsonobject.fromobject (s), parse, can also use the foreground

var json= "[{' CityName ': ' Guangzhou ', ' Cityid ': 0},{' cityname ': ' Shenzhen ', ' Cityid ': 0},{' cityname ': ' Shanwei ', ' Cityid ': 0},{' cityname ': '      Shantou ', ' Cityid ': 0},{' cityname ': ' Foshan ', ' Cityid ': 0}] "; Json=eval ("(" +json+ ")") for (Var k=0;k<json.length;k++) {var obj=json[k] document.write (obj.cityname+ "<br > ")