微信小程序开发中需要注意：小程序只能用标准的https请求，get请求中没问题，但POST请求就不好使了。
原因：小程序请求头'Content-Type': 'application/json' 不同于平常的"application/x-www-form-urlencoded"
解决办法：
1.get请求无所谓，post请求需要封装成bean，用@Requestbody 接收
另：更改@Requestmapping的consumer
@Controller@RequestMapping(value = "/pets", method = RequestMethod.POST, consumes="application/json")public void addPet(@RequestBody Pet pet, Model model) { // implementation omitted}据说也可以，@Requestmapping详解看这里https://my.oschina.net/luanwu/blog/1579775
2.将默认的'Content-Type': 'application/json' 需要改成: "Content-Type": "application/x-www-form-urlencoded"
data: { cityname: "上海", key: "1430ec127e097e1113259c5e1be1ba70" }写成json格式这样也是请求不到数据的.需要转格式.
用别人的代码
span style="font-size:24px;"//index.js //获取应用实例 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( '网络请求失败' ); return; } } }) }, onToastChanged: function() { that.setData( { toastHidden: true }); } }) var that; var Util = require( '../../utils/util.js' );/span span style="font-size:24px;"!--index.wxml-- view class="container" toast hidden="{{toastHidden}}" bindchange="onToastChanged" {{toastText}} /toast view{{city_name}}/view view{{date}}/view view{{info}}/view /view/span span style="font-size:24px;"//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, }/span
