小程序发起网络请求 需用到 wx.request()
废话不多说 直接开始封装
1.首先创建一个request文件夹里边创建一个api.js和request.js
2.封装的请求在request.js 文件里，看代码
const URL = {develop: {// BASE_URL: "", //测试域名BASE_URL: ":21408/lzt", //这里写接口的地址前缀},trial: {// BASE_URL: "", //测试域名BASE_URL: "", //服务器域名},release: {// BASE_URL: "", //测试域名BASE_URL: "", //服务器域名}}/*** GET请求封装*/function get(url, data = {}) {return request(url, 'GET', data)}/*** POST请求封装*/function post(url, data = {}) {return request(url, 'POST', data)}/*** @description 上传文件* @param {*} url 请求地址* @param {*} data 参数*/function upLoad(url, data = {}) {return uploadFile(url, 'POST', data)}/*** 微信的request*/function request(url, method = "GET", data = {}) {var appSecret = "8800c670ccc54bb0a9724ff05549f208"; // 看个人需求这是我公司需要在请求头携带的参数值var clientId = "2c46c1e4f8954b54bb1b984efa06fab6"; // 看个人需求这是我公司需要在请求头携带的参数值var contentType = method == 'GET' ? 'application/json' : 'application/x-www-form-urlencoded; charset=utf-8' // 这是大部分都是必须携带的。var getUrl = ":21408/lzt"+url; // 请求的地址前缀加后期在api文件写的接口地址。getUrl = getUrl.indexOf('?') == -1?getUrl+"?":getUrl;if(method.toLocaleUpperCase() == "GET"){getUrl += (getUrl.charAt(getUrl.length-1) == "&"?"":"&") + "loginAreaId=" + zyUrl.getSiteID() + (userInfo?'&openId=' + userInfo.openid:'');}var signatureAppUrl = getUrl.split('/lzt')[0];// console.log(getUrl);var signatureUrl = getUrl.match(/lzt(\S*)\?/)[1];var signatureParam = getUrl.split('?')[1];var signatureTime = Date.parse(new Date()) / 1000;var signatureMessage = signatureTime + '-' + method.toLocaleUpperCase() + '-' + signatureUrl + '-' + getSignatureParam(method, signatureParam);var signatureHash = CryptoJS.HmacSHA256(signatureMessage, appSecret).toString();var header = { 'content-Type': contentType, // 这个应该大部分公司都需要携带在请求头中把'timestamp': signatureTime, //看个人需求这是我公司需要在请求头携带的参数'u-login-areaId': '370200', //看个人需求这是我公司需要在请求头携带的参数'signature': signatureHash, //看个人需求这是我公司需要在请求头携带的参数'clientId': clientId, //看个人需求这是我公司需要在请求头携带的参数}// console.log(header);return new Promise(function (resolve, reject) {wx.request({url: URL[app.globalData.envVersion].BASE_URL + url,data: data,method: method,header: header,success: function (res) {resolve(res.data)},fail: function (err) {//服务器连接异常reject(err, "服务器连接异常，请检查网络再试")},})});}// 以下是我公司用到的一些 你们不用的可以忽略以下两段代码function getSignatureParam(_httpMethod, _param) {if(_httpMethod.toLocaleUpperCase() != "GET"){return "0";}var jsonarr = _param.split("&");var signStr = '';for (var i in jsonarr) {var key = jsonarr[i].split("=")[0];var value = jsonarr[i].split("=")[1];if (key == 'timestamp' || key == 'clientId' || key == 'signature' ||!value) {continue;}signStr += key;}if (!signStr) {return "0";}var paramIntValue = 0;for (var i = 0; i < signStr.length; i++) {paramIntValue += signStr.charCodeAt(i);}return paramIntValue;}var CryptoJS=CryptoJS||function(h,s){var f={},g=f.lib={},q=function(){},m=g.Base={extend:function(a){q.prototype=this;var c=new q;a&&c.mixIn(a);c.hasOwnProperty("init")||(c.init=function(){c.$super.init.apply(this,arguments)});c.init.prototype=c;c.$super=this;return c},create:function(){var a=this.extend();a.init.apply(a,arguments);return a},init:function(){},mixIn:function(a){for(var c in a)a.hasOwnProperty(c)&&(this[c]=a[c]);a.hasOwnProperty("toString")&&(this.toString=a.toString)},clone:function(){return this.init.prototype.extend(this)}},r=g.WordArray=m.extend({init:function(a,c){a=this.words=a||[];this.sigBytes=c!=s?c:4*a.length},toString:function(a){return(a||k).stringify(this)},concat:function(a){var c=this.words,d=a.words,b=this.sigBytes;a=a.sigBytes;this.clamp();if(b%4)for(var e=0;e<a;e++)c[b+e>>>2]|=(d[e>>>2]>>>24-8*(e%4)&255)<<24-8*((b+e)%4);else if(65535<d.length)for(e=0;e<a;e+=4)c[b+e>>>2]=d[e>>>2];else c.push.apply(c,d);this.sigBytes+=a;return this},clamp:function(){var a=this.words,c=this.sigBytes;a[c>>>2]&=4294967295<<32-8*(c%4);a.length=h.ceil(c/4)},clone:function(){var a=m.clone.call(this);a.words=this.words.slice(0);return a},random:function(a){for(var c=[],d=0;d<a;d+=4)c.push(4294967296*h.random()|0);return new r.init(c,a)}}),l=f.enc={},k=l.Hex={stringify:function(a){var c=a.words;a=a.sigBytes;for(var d=[],b=0;b<a;b++){var e=c[b>>>2]>>>24-8*(b%4)&255;d.push((e>>>4).toString(16));d.push((e&15).toString(16))}return d.join("")},parse:function(a){for(var c=a.length,d=[],b=0;b<c;b+=2)d[b>>>3]|=parseInt(a.substr(b,2),16)<<24-4*(b%8);return new r.init(d,c/2)}},n=l.Latin1={stringify:function(a){var c=a.words;a=a.sigBytes;for(var d=[],b=0;b<a;b++)d.push(String.fromCharCode(c[b>>>2]>>>24-8*(b%4)&255));return d.join("")},parse:function(a){for(var c=a.length,d=[],b=0;b<c;b++)d[b>>>2]|=(a.charCodeAt(b)&255)<<24-8*(b%4);return new r.init(d,c)}},j=l.Utf8={stringify:function(a){try{return decodeURIComponent(escape(n.stringify(a)))}catch(c){throw Error("Malformed UTF-8 data");}},parse:function(a){return n.parse(unescape(encodeURIComponent(a)))}},u=g.BufferedBlockAlgorithm=m.extend({reset:function(){this._data=new r.init;this._nDataBytes=0},_append:function(a){"string"==typeof a&&(a=j.parse(a));this._data.concat(a);this._nDataBytes+=a.sigBytes},_process:function(a){var c=this._data,d=c.words,b=c.sigBytes,e=this.blockSize,f=b/(4*e),f=a?h.ceil(f):h.max((f|0)-this._minBufferSize,0);a=f*e;b=h.min(4*a,b);if(a){for(var g=0;g<a;g+=e)this._doProcessBlock(d,g);g=d.splice(0,a);c.sigBytes-=b}return new r.init(g,b)},clone:function(){var a=m.clone.call(this);a._data=this._data.clone();return a},_minBufferSize:0});g.Hasher=u.extend({cfg:m.extend(),init:function(a){this.cfg=this.cfg.extend(a);this.reset()},reset:function(){u.reset.call(this);this._doReset()},update:function(a){this._append(a);this._process();return this},finalize:function(a){a&&this._append(a);return this._doFinalize()},blockSize:16,_createHelper:function(a){return function(c,d){return(new a.init(d)).finalize(c)}},_createHmacHelper:function(a){return function(c,d){return(new t.HMAC.init(a,d)).finalize(c)}}});var t=f.algo={};return f}(Math);(function(h){for(var s=CryptoJS,f=s.lib,g=f.WordArray,q=f.Hasher,f=s.algo,m=[],r=[],l=function(a){return 4294967296*(a-(a|0))|0},k=2,n=0;64>n;){var j;a:{j=k;for(var u=h.sqrt(j),t=2;t<=u;t++)if(!(j%t)){j=!1;break a}j=!0}j&&(8>n&&(m[n]=l(h.pow(k,0.5))),r[n]=l(h.pow(k,1/3)),n++);k++}var a=[],f=f.SHA256=q.extend({_doReset:function(){this._hash=new g.init(m.slice(0))},_doProcessBlock:function(c,d){for(var b=this._hash.words,e=b[0],f=b[1],g=b[2],j=b[3],h=b[4],m=b[5],n=b[6],q=b[7],p=0;64>p;p++){if(16>p)a[p]=c[d+p]|0;else{var k=a[p-15],l=a[p-2];a[p]=((k<<25|k>>>7)^(k<<14|k>>>18)^k>>>3)+a[p-7]+((l<<15|l>>>17)^(l<<13|l>>>19)^l>>>10)+a[p-16]}k=q+((h<<26|h>>>6)^(h<<21|h>>>11)^(h<<7|h>>>25))+(h&m^~h&n)+r[p]+a[p];l=((e<<30|e>>>2)^(e<<19|e>>>13)^(e<<10|e>>>22))+(e&f^e&g^f&g);q=n;n=m;m=h;h=j+k|0;j=g;g=f;f=e;e=k+l|0}b[0]=b[0]+e|0;b[1]=b[1]+f|0;b[2]=b[2]+g|0;b[3]=b[3]+j|0;b[4]=b[4]+h|0;b[5]=b[5]+m|0;b[6]=b[6]+n|0;b[7]=b[7]+q|0},_doFinalize:function(){var a=this._data,d=a.words,b=8*this._nDataBytes,e=8*a.sigBytes;d[e>>>5]|=128<<24-e%32;d[(e+64>>>9<<4)+14]=h.floor(b/4294967296);d[(e+64>>>9<<4)+15]=b;a.sigBytes=4*d.length;this._process();return this._hash},clone:function(){var a=q.clone.call(this);a._hash=this._hash.clone();return a}});s.SHA256=q._createHelper(f);s.HmacSHA256=q._createHmacHelper(f)})(Math);(function(){var h=CryptoJS,s=h.enc.Utf8;h.algo.HMAC=h.lib.Base.extend({init:function(f,g){f=this._hasher=new f.init;"string"==typeof g&&(g=s.parse(g));var h=f.blockSize,m=4*h;g.sigBytes>m&&(g=f.finalize(g));g.clamp();for(var r=this._oKey=g.clone(),l=this._iKey=g.clone(),k=r.words,n=l.words,j=0;j<h;j++)k[j]^=1549556828,n[j]^=909522486;r.sigBytes=l.sigBytes=m;this.reset()},reset:function(){var f=this._hasher;f.reset();f.update(this._iKey)},update:function(f){this._hasher.update(f);return this},finalize:function(f){var g=this._hasher;f=g.finalize(f);g.reset();return g.finalize(this._oKey.clone().concat(f))}})})();// 接口暴露出去 完活。。module.exports = {request,get,post,URL,}
以上是在request.js文件封装的代码
下面是在api文件里封装的接口url拼接的后面部分
// 引入请求方式import {request,get,post,upLoad} from './request';// 例如书画列表接口 post请求方式 params代表参数，xxx是写自己的接口 完工 这个一个接口 五个接口就复制5个function paintinglist(params) {return post('/xxx/xxx', params)}// 把这个请求暴露出去 export default {paintinglist}
以上就是全部的微信小程序封装的步骤，即可请求成功 帮到大家请点个赞 谢谢哦 wx：gx97280 互相交流
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