upLoad.js

var app = getApp()
var apiDomain = app.globalData.mysite
var app = getApp()
var imagePaths = [] //图片路径数组
var index = 0 // 要上传图片的索引
var cb = function() {} //回调函数
var inProgress = false // 是否正在上传图片中

var sucFun = function(path) {
	cb({
		success: true,
		path: path,
		index: index
	})

	++index

	if (index < imagePaths.length) {
		setTimeout(uploadFile, 50)
	} else { //上传结束
		inProgress = false
	}
}

var errorFun = function() {

	cb({
		success: false,
		path: null,
		index: index
	})

	++index

	if (index < imagePaths.length) {
		setTimeout(uploadFile, 50)
	} else { //上传结束
		inProgress = false
	}
}

var uploadFile = function() {
	wx.uploadFile({
		url: apiDomain + '/api/file/upload',
		filePath: imagePaths[index],
		name: 'file',
		formData: {
			token: app.globalData.token
		},
		success: function(resp) {
			if (resp.statusCode == 200) {
				var data = {}

				try {
					data = JSON.parse(resp.data)
					sucFun(data.path)
				} catch (e) {
					throw "error:" + e.message + ", invalid json: " + resp.data
				}

			} else {
				errorFun()
			}
		},
		fail: function() {
			errorFun()
		}

	})
}

//cb 是上传结束的回调函数
exports.uploadMany = function(arr, funCB) {
	if (inProgress) {
		wx.showToast({
			title: '还有图片在上传中'
		})
		return;
	}

	inProgress = true
	imagePaths = arr //图片路径数组
	index = 0 // 要上传图片的索引

	if (imagePaths.length == 0) {
		wx.showToast({
			title: '数组不能为空'
		})
		return;
	}

	if (funCB != null && typeof funCB == 'function') {
		cb = funCB
	}

	setTimeout(uploadFile, 50)
}