frida打印arraylist类型的数据

function bytesToString(arr) {
  var str = '';
  arr = new Uint8Array(arr);
  for (var i in arr) {
      str += String.fromCharCode(arr[i]);
  }
  return str;
}
var Color = {
  RESET: "\x1b[39;49;00m", Black: "0;01", Blue: "4;01", Cyan: "6;01", Gray: "7;11", Green: "2;01", Purple: "5;01", Red: "1;01", Yellow: "3;01",
  Light: {
      Black: "0;11", Blue: "4;11", Cyan: "6;11", Gray: "7;01", Green: "2;11", Purple: "5;11", Red: "1;11", Yellow: "3;11"
  }
};

var LOG = function (input, kwargs) {
  kwargs = kwargs || {};
  var logLevel = kwargs['l'] || 'log', colorPrefix = '\x1b[3', colorSuffix = 'm';
  if (typeof input === 'object')
      input = JSON.stringify(input, null, kwargs['i'] ? 2 : null);
  if (kwargs['c'])
      input = colorPrefix + kwargs['c'] + colorSuffix + input + Color.RESET;
  console[logLevel](input);
};

var printStack = function () {
  Java.perform(function() {
      var android_util_Log = Java.use('android.util.Log'), java_lang_Exception = Java.use('java.lang.Exception');
      // getting stacktrace by throwing an exception
      LOG(android_util_Log.getStackTraceString(java_lang_Exception.$new()), { c: Color.Gray });
  });
};
function getFieldValue(obj, fieldName) {
  var cls = obj.getClass();
  var field = cls.getDeclaredField(fieldName);
  field.setAccessible(true);
  var name = field.getName();
  var value = field.get(obj);
  // console.log("field: " + field + "\tname:" + name + "\tvalue:" + value);
  return value;
}


function getReflectFields(val1) {
  var clazz = Java.use("java.lang.Class");
  var parametersTest = Java.cast(val1.getClass(),clazz);
  //getDeclaredFields()获取所有字段
  var fields = parametersTest.getDeclaredFields();
  fields.forEach(function (field) {//依次打印字段的类型、名称、值
    var type =field.getType();
    var name =field.getName();
    var value =field.get(val1);
    console.log(`name:${name},value:${value}`)
  })
}

function arrayListToString(arrayList) {
      for (var i = 0; i < arrayList.size(); i++) {
          var item = arrayList.get(i);
          getReflectFields(item)
      }

  }


let RichMediaServiceImpl = Java.use("com.tencent.qqnt.msg.api.impl.RichMediaServiceImpl");
RichMediaServiceImpl["downloadFileForFileInfo"].implementation = function (fileInfoList, savePath) {
    printStack();
    console.log(`RichMediaServiceImpl.downloadFileForFileInfo is called: fileInfoList1=${arrayListToString(Java.cast(fileInfoList, Java.use("java.util.ArrayList")))}, savePath=${savePath}`);
    this["downloadFileForFileInfo"](fileInfoList, savePath);
};