主要的代码是红色区域，HTML5获取本地文件对象并进行操作

//给上传按钮添加点击事件
    $(".myappTXTUploadBtn").click(function(){

        var filepath = $(".uploadFace").val().trim();
        if(filepath == ""){
            showBlackPage("请您选择要上传的txt文件","请您选择要上传的txt文件");
            return;
        }
        var last = filepath.substr(filepath.lastIndexOf(".")+1);
        if(last == "txt"){
            var file = $(".uploadFace")[0].files[0];
            var reader = new FileReader();
            reader.readAsText(file, "GB2312");
            var urlData;
            reader.onload = function (e) {
                urlData = this.result;
                var dataarray = urlData.split("\n");
                var objs = "[";
                var index = 1;
                for(var i=0;i<dataarray.length;i++){
                    var data = dataarray[i].trim();
                    if(data == ""){
                        continue;
                    }else{
                        var namestart = data.indexOf("【");
                        var nameend = data.lastIndexOf("】");
                        var str = "";
                        if(namestart != -1 && nameend != -1){
                            var obj = {};
                            obj.replytxt = data.substr(namestart+1,nameend-1);
                            str += data.substr(namestart+1,nameend-1);
                            var imgstart = data.indexOf("〖");
                            var imgend = data.lastIndexOf("〗");
                            if(imgstart != -1 && imgend != -1){
                                obj.receiveimg = data.substr(imgstart+1,imgend-nameend-2);
                                str += "\n"+data.substr(imgstart+1,imgend-nameend-2);
                                obj.receivetxt = data.substr(imgend+1);
                                str += "\n"+data.substr(imgend+1);
                            }else{
                                obj.receivetxt = data.substr(nameend+1);
                                str += "\n"+data.substr(nameend+1);
                            }
                            obj.myappid = index;
                            index++;
                            objs += JSON.stringify(obj)+",";
                        }else{
                            continue;
                        }
                    }
                }
                objs = objs.substr(0,objs.lastIndexOf(","));
                objs += "]"
                if(weixinid != ""){
                    $.ajax({
                        type:"POST",
                        url:"/api2/app/myappadd?",
                        data:{
                            weixinid:weixinid,
                            "myapp":objs
                        },
                        success:function(serverData){
                            showBlackPage(serverData["提示信息"],serverData["提示信息"]);
                        }
                    });
                }else{
                    alert("您还没有绑定微信公众账号");
                }
            }
        }else{
            alert("您上传的不是txt文件");
        }
    });