尝试在After Effects脚本中解析嵌套的JSON文件

有人可以告诉我我在做什么错吗?我有一个正在通过After Effects中的脚本进行解析的json文件,但不确定如何在json文件的部分中进行迭代。

我的json文件是:

{
    "Timestamp": "20-Sep-2020 12:38:07.177","m11": 0.2202,"m12": 0.8858,"m13": 0.4085,"m21": -0.9708,"m22": 0.2399,"m23": 0.0031,"m31": -0.0952,"m32": -0.3972,"m33": 0.9128,"qX": -0.13,"qY": 0.1635,"qZ": -0.6026,"qW": -0.7702
  },{
    "Timestamp": "20-Sep-2020 12:38:07.186","m11": 0.2204,"m12": 0.8861,"m13": 0.4078,"m22": 0.2401,"m32": -0.3965,"m33": 0.9131,"qX": -0.1297,"qY": 0.1632,"qW": -0.7703
  }

我的jsx文件是这样的:

#include "json2.js"

var file = new File;
var check = 0;

var mainWindow = new Window("palette","File Reader",undefined);
mainWindow.orientatizzaaq1on = "column";

var groupOne = mainWindow.add("group",undefined,"groupOne");
groupOne.orientation = "row";
var fileLocBox = groupOne.add("edittext","Selected File Location");
fileLocBox.size = [150,20];
var getFileButton = groupOne.add("button","File...");
getFileButton.helpTip = "Select a .json file to change the comp";

var groupTwo = mainWindow.add("group","groupTwo");
groupTwo.orientation = "row";
var applyButton = groupTwo.add("button","Apply");

mainWindow.center();
mainWindow.show();

getFileButton.onClick = function() {
    file = file.openDlg("Open a file","acceptable Files:*.json");
    fileLocBox.text = file.fsname;
    check = 1;
    }

applyButton.onClick = function() {
        if(check == 0) {
                alert("Please select a file");
                return false;
            } else {
                //app.beginUndoGroup("Comp Changes");
                var fileExtension = fileLocBox.text;
                var fileData;
                
                if(fileExtension.substring(fileExtension.length-4,fileExtension.length) == "json") {
                    fileData = readJson();
                    
                    changeComp(fileData);
                }
            alert("done");
   }
}
function readJson() {
    var currentLine;
    var jsonStuff = [];
    file.open("r");
        while(!file.eof) {
                currentLine = file.readln();
                jsonStuff.push(currentLine);
            }
        file.close();
        jsonStuff = jsonStuff.join("");
        var parsedJson = JSON.parse(jsonStuff);
        
        return parsedJson;
    }

function changeComp(data) {
    var nullz = app.project.activeItem.layers.addNull();
    nullz.threeDLayer = true;
    nullz.name = "parent to me";
    var size = Object.keys(data).length;
    for (i = 0; i < size; i++) {
        var temp =data[1].m11; 
        var t =i/25;
       nullz.xRotation.setvalueAtTime(t,temp);
      }
  }

我感觉我的json文件可能需要采用不同的格式,这就是它从另一个应用程序传给我的方式。

因此,想法是它将遍历json文件,获取“ m11”值,将其应用于null的旋转,然后继续进行下一帧,抓取下一个“ m11”,依此类推... 在我的脚本中,如果我只是说:

var temp =data.m11; 
var t =i/25;
nullz.xRotation.setvalueAtTime(t,temp);

它起作用,它将获取第一个“ m11”的值并将其应用于空对象。 但是,如果我尝试通过说到第二个“ m11”

var temp =data[1].m11;

var temp =data.m11[1];

它不起作用,所以只是想弄清楚我在做什么错? 是json格式化的方式吗? json最初以[]结尾和结尾,但是将它们保留在其中会导致脚本在尝试读取文件时崩溃,如我上面所述,将其取出使它有些起作用。

还是脚本?还是两者都在猜测?

iCMS 回答:尝试在After Effects脚本中解析嵌套的JSON文件

我无法重新创建您的确切环境,但是似乎您删除了使json包含数组的方括号[]。如果您将其解析为数组,那么它将起作用:

function changeComp(data) {
    var nullz = app.project.activeItem.layers.addNull();
    nullz.threeDLayer = true;
    nullz.name = "parent to me";

    for (i = 0; i < data.length; i++) {
        const value = data[i].m11;
        const time = i / 25;
        nullz.xRotation.setValueAtTime(time,value);
   }
}

您还可以详细说明您的问题吗? 当您写时:

“但是,如果我尝试通过说(...)到达第二个“ m11”,则不会 工作”

什么不起作用?错误代码是什么?读取计算机上的错误提示通常可以帮助您找到错误的提示!

这是我解析为数据的文件:

[
    {
        "Timestamp": "20-Sep-2020 12:38:07.177","m11": 0.2202,"m12": 0.8858,"m13": 0.4085,"m21": -0.9708,"m22": 0.2399,"m23": 0.0031,"m31": -0.0952,"m32": -0.3972,"m33": 0.9128,"qX": -0.13,"qY": 0.1635,"qZ": -0.6026,"qW": -0.7702
    },{
        "Timestamp": "20-Sep-2020 12:38:07.186","m11": 0.2204,"m12": 0.8861,"m13": 0.4078,"m22": 0.2401,"m32": -0.3965,"m33": 0.9131,"qX": -0.1297,"qY": 0.1632,"qW": -0.7703
    }
]
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