想问一下下面的函数有什么问题，第一次迭代没有任何问题，但是在刷新网格后，当量角器试图移动到下一个单元格时，它会显示以下错误消息：
失败：过时的元素引用：元素未附加到页面文档
此方法的想法是读取第5列（如果考虑从0开始则为第4列），检查包含值“ true”的每一行，如果包含true，则执行编辑该行的操作，单击复选框并保存（所有操作均在该行执行） 每个元素都有一个与状态代码相关的唯一ID，因此为什么我在函数中“不使用行”（只是从行中获取文本，然后作为字符串传递来完成元素的ID）
**每次更改和保存值时，表都会刷新
/**
* Get Wav Amplitudes
*
* @param file
* @return
* @throws UnsupportedAudioFileException
* @throws IOException
*/
private int[] getWavAmplitudes(File file) throws UnsupportedAudioFileException , IOException {
//Get Audio input stream
try (AudioInputStream input = AudioSystem.getAudioInputStream(file)) {
AudioFormat baseFormat = input.getFormat();
//Encoding
Encoding encoding = AudioFormat.Encoding.PCM_UNSIGNED;
float sampleRate = baseFormat.getSampleRate();
int numChannels = baseFormat.getChannels();
AudioFormat decodedFormat = new AudioFormat(encoding, sampleRate, 16, numChannels, numChannels * 2, sampleRate, false);
int available = input.available();
//Get the PCM Decoded Audio Input Stream
try (AudioInputStream pcmDecodedInput = AudioSystem.getAudioInputStream(decodedFormat, input)) {
final int BUFFER_SIZE = 4096; //this is actually bytes
//Create a buffer
byte[] buffer = new byte[BUFFER_SIZE];
//Now get the average to a smaller array
int maximumArrayLength = 100000;
int[] finalAmplitudes = new int[maximumArrayLength];
int samplesPerPixel = available / maximumArrayLength;
//Variables to calculate finalAmplitudes array
int currentSampleCounter = 0;
int arrayCellPosition = 0;
float currentCellValue = 0.0f;
//Variables for the loop
int arrayCellValue = 0;
//Read all the available data on chunks
while (pcmDecodedInput.readNBytes(buffer, 0, BUFFER_SIZE) > 0)
for (int i = 0; i < buffer.length - 1; i += 2) {
//Calculate the value
arrayCellValue = (int) ( ( ( ( ( buffer[i + 1] << 8 ) | buffer[i] & 0xff ) << 16 ) / 32767 ) * WAVEFORM_HEIGHT_COEFFICIENT );
//Every time you him [currentSampleCounter=samplesPerPixel]
if (currentSampleCounter != samplesPerPixel) {
++currentSampleCounter;
currentCellValue += Math.abs(arrayCellValue);
} else {
//Avoid ArrayIndexOutOfBoundsException
if (arrayCellPosition != maximumArrayLength)
finalAmplitudes[arrayCellPosition] = finalAmplitudes[arrayCellPosition + 1] = (int) currentCellValue / samplesPerPixel;
//Fix the variables
currentSampleCounter = 0;
currentCellValue = 0;
arrayCellPosition += 2;
}
}
return finalAmplitudes;
} catch (Exception ex) {
ex.printStackTrace();
}
} catch (Exception ex) {
ex.printStackTrace();
}
//You don't want this to reach here...
return new int[1];
}
编辑行之前的HTML：
function resetGoodItemStatus(siteToResetValues){
var cellsConform = element.all(by.css('#datatableDir tr td:nth-of-type(5)'));
var conformCounter = 0;
selectValueDropDown(siteToResetValues)
cellsConform.each((eachCell) => {
eachCell.getText().then((cellText) => {
switch (cellText)
{
case 'true':
element(by.id(conformCounter+'-1')).getText().then(function(value){
element(by.id('btnEdit-US.'+value)).click();
element(by.xpath("//*[@editable-checkbox=\"scopeValue.getConformMapping(scopeValue.getDataRow("+'\'US.'+value+"\')).conform\"]/../span/span/input")).click();
element(by.id('btnSubmit-US.'+value)).click();
})
default:
browser.sleep(100)
}
conformCounter += 1
});
});
}
HTML：
<tr role="row" class="odd">
<td id="0-0" class="ng-scope">
<form editable-form="" name="scopeValue.rowforms['US.DAM']" onaftersave="scopeValue.saveData('US.DAM',0)" ng-show="scopeValue.rowforms['US.DAM'].$visible" class="form-buttons form-inline ng-pristine ng-valid ng-hide" style="">
<button type="button" class="btn btn-xs btn-trans kni kni-check-circle text-info" id="btnSubmit-US.DAM" ng-disabled="scopeValue.rowforms['US.DAM'].$waiting" ng-click="scopeValue.rowforms['US.DAM'].$submit()">
</button>
<button type="button" class="btn btn-link kni kni-x-circle-slim" ng-disabled="scopeValue.rowforms['US.DAM'].$waiting" id="btnCancel-US.DAM" ng-click="scopeValue.cancelData('US.DAM',0)">
</button>
</form>
<div class="buttons" ng-show="!scopeValue.rowforms['US.DAM'].$visible">
<button type="button" class="btn btn-xs btn-trans kni kni-edit-circle text-info" ng-click="scopeValue.rowforms['US.DAM'].$show()" id="btnEdit-US.DAM">
</button>
</div></td>
<td id="0-1" class="ng-scope sorting_1">DAM</td>
<td id="0-2" class="ng-scope">US.DAM</td>
<td id="0-3" class="ng-scope">Generic Damaged Code</td>
<td id="0-4" class="ng-scope">
<span editable-checkbox="scopeValue.getConformMapping(scopeValue.getDataRow('US.DAM')).conform" e-name="conform" e-form="scopeValue.rowforms['US.DAM']" e-required="" class="ng-scope ng-binding editable">false</span>
</td></tr>
谢谢您的时间！
答案 0 :(得分：1)
一种简单的方法是将第5列中所有单元格的文本放入文本数组，然后迭代该文本数组，该数组的索引等于表的行索引。
一旦单元格文本等于true，请使用行索引查找表行。其余元素可以在表格行中找到。
由于在每次迭代中，下面的代码将再次从页面中查找所有表行，Stale Exception
function resetGoodItemStatus(siteToResetValues){
var cellsConform = element.all(by.css('#datatableDir tr td:nth-of-type(5)'));
selectValueDropDown(siteToResetValues);
cellsConform.getText().then(function(conforms) {
// conforms is a string Array, each one is the text of one cell of 5th column
conforms.forEach(function(conform, rowIndex) {
if(conform === 'true') {
var row = element.all(by.css('#datatableDir tr').get(rowIndex);
row.element(by.css('button[id^="btnEdit-US"]')).click();
row.element(by.css('input[type="checkbox"]')).click();
row.element(by.css('button[id^="btnSubmit-US"]')).click();
browser.sleep(3000)
}
});
});
}