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newsApi.js
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newsApi.js
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/**
* @author wsscat
*/
//引入http的nodejs原生模块
var http = require('http');
//param来自于http.js从url上获取的参数 格式是一个对象
//response来自于http.js的http.createServer的response对象
function newsApi(param,callback,response) {
http.request({
//域名
hostname: 'apis.baidu.com',
//端口
port: '80',
path: '/showapi_open_bus/channel_news/search_news?channelId='+param.channelId+'&title=%E4%B8%8A%E5%B8%82&page='+param.page+'&needContent=0&needHtml=0',
//用get请求
method: 'GET',
headers: {
//设置百度的apiKey
'apikey': '0aea38d1a7c4443f2f00adc86c4c3e72',
//'Access-Control-Allow-Origin':'*'
}
}, function(request) {
//设置请求结果解析为utf-8编码
request.setEncoding('utf-8');
//刚开始还没拿数据的时候是为空
var str = '';
//遍历监听数据源,并存放到str里面
request.on('data', function(data) {
str += data;
})
//当确定数据已经完全获取回来后我们再把他组装成jsonp
request.on('end', function(data) {
if(response){
//console.log('have response');
//如果有response,即有传服务器的response进来,则把结果打印,
response.end(param.callback + '(' + str + ')');
}else{
//console.log('have not response');
//回调函数,把结果传出去
callback(str)
}
})
}).end()
}
//导出newsApi模块给http.js模块使用
exports.newsApi = newsApi;