微信小程序学习点滴《五》：网络请求(POST请求)填坑指南

POST命令的时候存有好几个坑.我已经为大家寄出了.

按照文档,确实就是这么写下.那就入坑了.

1. 'Content-Type': 'application/json'用在get命令中没问题.

POST命令就不好并使了.须要换成: "Content-Type": "application/x-www-form-urlencoded"

2. 加之method: "POST"

3.data: { cityname: "上海", key: "1430ec127e097e1113259c5e1be1ba70" }译成json格式这样也就是命令没数据的.须要转回格式.

下面轻易张贴代码:

3.1

//index.js

//以获取应用领域实例

var app = getApp()

Page( {

data: {

toastHidden: true,

city_name: '',

},

onLoad: function() {

that = this;

wx.request( {

url: "http://op.juhe.cn/onebox/weather/query",

header: {

"Content-Type": "application/x-www-form-urlencoded"

},

method: "POST",

//data: { cityname: "上海", key: "1430ec127e097e1113259c5e1be1ba70" },

data: Util.json2Form( { cityname: "上海", key: "1430ec127e097e1113259c5e1be1ba70" }),

complete: function( res ) {

that.setData( {

toastHidden: false,

toastText: res.data.reason,

city_name: res.data.result.data.realtime.city_name,

date: res.data.result.data.realtime.date,

info: res.data.result.data.realtime.weather.info,

});

if( res == null || res.data == null ) {

console.error( '网络命令失利' );

return;

}

}

})

},

onToastChanged: function() {

that.setData( { toastHidden: true });

}

})

var that;

var Util = require( '../../utils/util.js' );

3.2

{{toastText}}

{{city_name}}

{{date}}

{{info}}

3.3

//util.js

function json2Form(json) {

var str = [];

for(var p in json){

str.push(encodeURIComponent(p) + "=" + encodeURIComponent(json[p]));

}

return str.join("&");

}

module.exports = {

json2Form:json2Form,

}

期望对大家存有协助