2019-01-18 微信小程序封装请求
/**
* 拦截器(请求之前调用)
* @fn: 请求函数
*/
function wxPromisify(fn) {
return function(obj = {}) {
// 开启动画效果
wx.showLoading({
title: '加载中'
});
return new Promise((resolve, reject) => {
obj.success = function(res) {
// 成功回调
if (res.statusCode == '200') {
// 关闭动画效果
wx.hideLoading();
if (res.data.errorCode == 10102) {
wx.showToast({
title: res.data.message,
icon: 'none',
duration: 3000
});
setTimeout(function() {
// 跳转到登录页面
wx.redirectTo({
url: '/pages/login/login',
});
}, 2000);
} else {
resolve(res.data);
}
} else {
switch (res.statusCode) {
case 400:
console.log('错误请求');
wx.showToast({
title: '错误请求',
icon: 'none',
duration: 3000
});
break;
case 401:
console.log('未授权，请重新登录');
wx.showToast({
title: '未授权，请重新登录',
icon: 'none',
duration: 3000
});
// 跳转到登录页面
wx.redirectTo({
url: '/pages/login/login',
});
break;
case 403:
console.log('拒绝访问');
wx.showToast({
title: '拒绝访问',
icon: 'none',
duration: 3000
});
break;
case 404:
console.log('请求错误，未找到该资源');
wx.showToast({
title: '请求错误，未找到该资源',
icon: 'none',
duration: 3000
});
break;
case 405:
console.log('请求方法未允许');
wx.showToast({
title: '请求方法未允许',
icon: 'none',
duration: 3000
});
break;
case 408:
console.log('请求超时');
wx.showToast({
title: '请求超时',
icon: 'none',
duration: 3000
});
break;
case 500:
console.log('服务端出错');
wx.showToast({
title: '服务端出错',
icon: 'none',
duration: 3000
});
break;
case 502:
console.log('网络错误');
wx.showToast({
title: '网络错误',
icon: 'none',
duration: 3000
});
break;
case 503:
console.log('服务不可用');
wx.showToast({
title: '服务不可用',
icon: 'none',
duration: 3000
});
break;
}
}
}
// 失败
obj.fail = function(res) {
wx.hideLoading(); // 请求超时关闭动画
wx.showToast({
title: res.errMsg,
icon: 'none'
});
reject(res)
}
fn(obj)
});
}
}
/**
* 无论Promise对象最后状态如何都会执行
* @callback: 回到函数
*/
Promise.prototype.finally = function(callback) {
let p = this.constructor;
return this.then(
value => P.resolve(callback()).then(() => value),
reason => P.reject(callback()).then(() => {
throw reason
})
)
}
/**
* 微信请求get封装
* @url: 接口地址
* @data：以对象的格式传入
* @token: token
*/
function Get(url, data) {
let Get = wxPromisify(wx.request);
var token = app.globalData.userInfo.token;
return Get({
url: url,
method: 'GET',
data: data,
header: {
'Access-Token': token
}
})
}
/**
* 微信请求post封装
* @url: 接口地址
* @data：以对象的格式传入
* @token: token
*/
function Post(url, data, token) {
let Post = wxPromisify(wx.request);
return Post({
url: url,
method: 'POST',
data: data,
header: {
"content-type": "application/x-www-form-urlencoded",
'Access-Token': token
}
})
}
/**
* 微信请求post json封装
* @url: 接口地址
* @data：以对象的格式传入
*/
function postJson(url, data) {
let postJson = wxPromisify(wx.request);
var token = app.globalData.userInfo.token;
return postJson({
url: url,
method: 'POST',
data: data,
header: {
'Access-Token': token
}
});
}
/**
* 微信请求put封装
* @url: 接口地址
* @data：以对象的格式传入
* @token: token
*/
function Put(url, data) {
let Put = wxPromisify(wx.request);
var token = app.globalData.userInfo.token;
return Put({
url: url,
method: 'PUT',
data: data,
header: {
"content-type": "application/x-www-form-urlencoded",
'Access-Token': token
}
});
}
/**
* 微信请求delete封装
* @url: 接口地址
* @data：以对象的格式传入
* @token: token
*/
function Delete(url, data) {
let Delete = wxPromisify(wx.request);
var token = app.globalData.userInfo.token;
return Delete({
url: url,
method: 'DELETE',
data: data,
header: {
"content-type": "application/x-www-form-urlencoded",
'Access-Token': token
}
});
}
module.exports = {
Post: Post,
postJson: postJson,
Get: Get,
Put: Put,
Delete: Delete
}
