"TypeError: Cannot read property 'getBlob' of undefined" when trying to get two different images and insert them into a document
"TypeError: Cannot read property 'getBlob' of undefined" when trying to get two different images and insert them into a document
我有一个 Google Apps 脚本，可以自动从 Google Sheet 中提取数据并将其插入到预先指定的模板中。使用 unique tagNumbers/identifiers.
找到数据
正在提取的数据包括 3 个签名。在遇到上述错误之前，我只能提取这些签名之一：TypeError: Cannot read property 'getBlob' of undefined.
此代码用于两个不同的函数，使用所有相同的变量和名称。我曾尝试更改变量名称，但这导致了相同的 TypeError。
可以找到电子表格 here。
剧本是here。
正在填写的文档模板为here。
这是代码。
function electInstallSignature(row, body){
var signature = row[17];
var sign = signature.substring(signature.indexOf("/") + 1);
var sigFolder = DriveApp.getFolderById("16C0DR-R5rJ4f5_2T1f-ZZIxoXQPKvh5C");
var files = sigFolder.getFilesByName(sign);
var n = 0;
var file;
while(files.hasNext()){
file = files.next();
n++;
} if(n>1){
SpreadsheetApp.getUi().alert('there is more than one file with this name' + sign);
}
var sigElectInstaller = "%SIGNELECTINSTALL%";
var targetRange = body.findText(sigElectInstaller); // Finding the range we need to focus on
var paragraph = targetRange.getElement().getParent().asParagraph(); // Getting the Paragraph of the target
paragraph.insertInlineImage(1, file.getBlob());// As there are only one element in this case you want to insert at index 1 so it will appear after the text // Notice the .getBlob()
paragraph.replaceText(sigElectInstaller, ""); // Remove the placeholder
}
function commEngineerSignature(row, body){
var signature = row[35];
var sign = signature.substring(signature.indexOf("/") + 1);
var sigFolder = DriveApp.getFolderById("16C0DR-R5rJ4f5_2T1f-ZZIxoXQPKvh5C");
var files = sigFolder.getFilesByName(sign);
var n = 0;
var file;
while(files.hasNext()){
file = files.next();
n++;
} if(n>1){
SpreadsheetApp.getUi().alert('there is more than one file with this name' + sign);
}
var sigCommEngineer = "%SFCE%";
var targetRange = body.findText(sigCommEngineer); // Finding the range we need to focus on
var paragraph = targetRange.getElement().getParent().asParagraph(); // Getting the Paragraph of the target
paragraph.insertInlineImage(1, file.getBlob());// As there are only one element in this case you want to insert at index 1 so it will appear after the text // Notice the .getBlob()
paragraph.replaceText(sigCommEngineer, ""); // Remove the placeholder
}
如您所见，代码在两个函数中完全相同，但仅适用于 electInstallSignature(row, body) 函数。
您可以在下面找到声明 row 和 body 参数的位置。
function chooseRowMethodI(templateId, rowNumber){
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getActiveSheet();
var dataRange = sheet.getDataRange();
var values = dataRange.getValues();
var data = sheet.getRange(2, 2, 10, 41).getValues();//starting with row 2 and column 1 as our upper-left most column, get values from cells from 1 row down, and 15 columns along - hence (2,1,1,15)
var docTitle = sheet.getRange(2, 2, 10, 1).getValues();//this is grabbing the data in field B2
var docTitleTagNumber = sheet.getRange(2, 5, 11, 1).getValues();
var today = new Date();
var dd = today.getDate();
var mm = today.getMonth() + 1;
var yyyy = today.getFullYear();
today = dd + '/' + mm + '/' + yyyy;
for(var i = 0; i < values.length; i++){
for(var j = 0; j < values[i].length; j++){
if(values[i][j] == response){
Logger.log(i);
var row = data[rowNumber];
var docId = DriveApp.getFileById(templateId).makeCopy().getId();
var doc = DocumentApp.openById(docId);
var body = doc.getActiveSection();
//************************** All Instruments data in here**********************
instrumentDetails(body, row);
electInstallSignature(row, body);
commEngineerSignature(row, body);
doc.saveAndClose();
var file = DriveApp.getFileById(doc.getId());
var newFolder = DriveApp.getFolderById("1Jylk3uO_WU0ClLQdm9y-mwRfHxlh2Ovn");
newFolder.addFile(file);
var newDocTitle = docTitle[i - 1][0];
var newDocTagNumber = docTitleTagNumber[i - 1][0];
doc.setName(newDocTitle + " " + newDocTagNumber + " " + today);
}
}
}
}
应该是 required，我已经包含了所有内容都来自 运行 的函数（请注意任何 ui 和用户输入代码都被标记出来以避免必须每次代码为 运行).
时导航回电子表格
var response = "FT101";
function chooseRow(){
// var ui = SpreadsheetApp.getUi(); // Same variations.
// var result = ui.prompt('Please enter the Tag number of the row you wish to print.', ui.ButtonSet.OK_CANCEL);
//
// // Process the user's response.
// var button = result.getSelectedButton();
// response = result.getResponseText();
// if (button == ui.Button.OK) {
// // User clicked "OK".
// ui.alert('Your tag number is' + response + '.');
// } else if (button == ui.Button.CANCEL) {
// // User clicked X in the title bar.
// ui.alert('You closed the dialog.');
// return 'the end';
// }
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getActiveSheet();
var dataRange = sheet.getDataRange();
var values = dataRange.getValues();
var category = sheet.getRange(2, 3, 11, 1).getValues();//Needs to be verified to ensure correct cell is chosen by script
var tags = sheet.getRange(2, 5, 11, 1).getValues();//Needs to be verified to ensure correct cell is chosen by script
for(var i = 0; i < tags.length; i++){
if(tags[i][0] == response && category[i][0] == "Instrument"){
var templateId = "1N3o951ECS5CAVGE6UgqBiCPC7H7LiJbL7Cd59G1xTnA";
chooseRowMethodI(templateId, i);
return "";
} else if(tags[i][0] == response && category[i][0] == "Motor" || tags[i][0] == response && category[i][0] == "Valve"){
var templateId = "1cSPD23qFd-34-IIr5eJ5a5OgHp9YR6xav9T28Y4Msec";
chooseRowMethodMV(templateId, i);
return "";
}
}
}
此错误 TypeError: Cannot read property 'getBlob' of undefined 表示您尝试从中 getBlob 的 object 没有任何 blob 数据。
第一个函数和第二个函数的唯一区别是第一行：row[17] 而不是 row[35] 这意味着以下内容：
var signature = row[17];
var sign = signature.substring(signature.indexOf("/") + 1);
var sigFolder = DriveApp.getFolderById("16C0DR-R5rJ4f5_2T1f-ZZIxoXQPKvh5C");
var files = sigFolder.getFilesByName(sign);
var n = 0;
var file;
while(files.hasNext()){
file = files.next();
n++;
} if(n>1){
SpreadsheetApp.getUi().alert('there is more than one file with this name' + sign);
}
因此，您可能永远不会访问 while 循环：
while(files.hasNext())
因为 var files = sigFolder.getFilesByName(sign); 从来没有下一个，因此，由于 file 没有初始化，所以它是 undefined.
总而言之，您遇到的错误是：
file 是 undefined
这意味着您从未在此变量上分配任何内容，这只会在您从未访问过 while 时发生，而这只会在 files 从未有过 next 时发生。
发生这种情况是因为那里根本没有任何文件，这意味着 sigFolder 上没有任何名为 sign 的文件。或者 row[17] 不包含有关您要访问的文件名的任何实质性信息。
所以，检查这个。
此外，请考虑以下有关迭代器的文档，例如您在 files 上处理的迭代器：
当您执行 files.next() 时，您正在访问迭代器的第一个元素：
关于 JavaScript 迭代器的一般文档：
我有一个 Google Apps 脚本，可以自动从 Google Sheet 中提取数据并将其插入到预先指定的模板中。使用 unique tagNumbers/identifiers.
找到数据正在提取的数据包括 3 个签名。在遇到上述错误之前，我只能提取这些签名之一：TypeError: Cannot read property 'getBlob' of undefined.
此代码用于两个不同的函数，使用所有相同的变量和名称。我曾尝试更改变量名称，但这导致了相同的 TypeError。
可以找到电子表格 here。
剧本是here。
正在填写的文档模板为here。
这是代码。
function electInstallSignature(row, body){
var signature = row[17];
var sign = signature.substring(signature.indexOf("/") + 1);
var sigFolder = DriveApp.getFolderById("16C0DR-R5rJ4f5_2T1f-ZZIxoXQPKvh5C");
var files = sigFolder.getFilesByName(sign);
var n = 0;
var file;
while(files.hasNext()){
file = files.next();
n++;
} if(n>1){
SpreadsheetApp.getUi().alert('there is more than one file with this name' + sign);
}
var sigElectInstaller = "%SIGNELECTINSTALL%";
var targetRange = body.findText(sigElectInstaller); // Finding the range we need to focus on
var paragraph = targetRange.getElement().getParent().asParagraph(); // Getting the Paragraph of the target
paragraph.insertInlineImage(1, file.getBlob());// As there are only one element in this case you want to insert at index 1 so it will appear after the text // Notice the .getBlob()
paragraph.replaceText(sigElectInstaller, ""); // Remove the placeholder
}
function commEngineerSignature(row, body){
var signature = row[35];
var sign = signature.substring(signature.indexOf("/") + 1);
var sigFolder = DriveApp.getFolderById("16C0DR-R5rJ4f5_2T1f-ZZIxoXQPKvh5C");
var files = sigFolder.getFilesByName(sign);
var n = 0;
var file;
while(files.hasNext()){
file = files.next();
n++;
} if(n>1){
SpreadsheetApp.getUi().alert('there is more than one file with this name' + sign);
}
var sigCommEngineer = "%SFCE%";
var targetRange = body.findText(sigCommEngineer); // Finding the range we need to focus on
var paragraph = targetRange.getElement().getParent().asParagraph(); // Getting the Paragraph of the target
paragraph.insertInlineImage(1, file.getBlob());// As there are only one element in this case you want to insert at index 1 so it will appear after the text // Notice the .getBlob()
paragraph.replaceText(sigCommEngineer, ""); // Remove the placeholder
}
如您所见，代码在两个函数中完全相同，但仅适用于 electInstallSignature(row, body) 函数。
您可以在下面找到声明 row 和 body 参数的位置。
function chooseRowMethodI(templateId, rowNumber){
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getActiveSheet();
var dataRange = sheet.getDataRange();
var values = dataRange.getValues();
var data = sheet.getRange(2, 2, 10, 41).getValues();//starting with row 2 and column 1 as our upper-left most column, get values from cells from 1 row down, and 15 columns along - hence (2,1,1,15)
var docTitle = sheet.getRange(2, 2, 10, 1).getValues();//this is grabbing the data in field B2
var docTitleTagNumber = sheet.getRange(2, 5, 11, 1).getValues();
var today = new Date();
var dd = today.getDate();
var mm = today.getMonth() + 1;
var yyyy = today.getFullYear();
today = dd + '/' + mm + '/' + yyyy;
for(var i = 0; i < values.length; i++){
for(var j = 0; j < values[i].length; j++){
if(values[i][j] == response){
Logger.log(i);
var row = data[rowNumber];
var docId = DriveApp.getFileById(templateId).makeCopy().getId();
var doc = DocumentApp.openById(docId);
var body = doc.getActiveSection();
//************************** All Instruments data in here**********************
instrumentDetails(body, row);
electInstallSignature(row, body);
commEngineerSignature(row, body);
doc.saveAndClose();
var file = DriveApp.getFileById(doc.getId());
var newFolder = DriveApp.getFolderById("1Jylk3uO_WU0ClLQdm9y-mwRfHxlh2Ovn");
newFolder.addFile(file);
var newDocTitle = docTitle[i - 1][0];
var newDocTagNumber = docTitleTagNumber[i - 1][0];
doc.setName(newDocTitle + " " + newDocTagNumber + " " + today);
}
}
}
}
应该是 required，我已经包含了所有内容都来自 运行 的函数（请注意任何 ui 和用户输入代码都被标记出来以避免必须每次代码为 运行).
时导航回电子表格var response = "FT101";
function chooseRow(){
// var ui = SpreadsheetApp.getUi(); // Same variations.
// var result = ui.prompt('Please enter the Tag number of the row you wish to print.', ui.ButtonSet.OK_CANCEL);
//
// // Process the user's response.
// var button = result.getSelectedButton();
// response = result.getResponseText();
// if (button == ui.Button.OK) {
// // User clicked "OK".
// ui.alert('Your tag number is' + response + '.');
// } else if (button == ui.Button.CANCEL) {
// // User clicked X in the title bar.
// ui.alert('You closed the dialog.');
// return 'the end';
// }
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getActiveSheet();
var dataRange = sheet.getDataRange();
var values = dataRange.getValues();
var category = sheet.getRange(2, 3, 11, 1).getValues();//Needs to be verified to ensure correct cell is chosen by script
var tags = sheet.getRange(2, 5, 11, 1).getValues();//Needs to be verified to ensure correct cell is chosen by script
for(var i = 0; i < tags.length; i++){
if(tags[i][0] == response && category[i][0] == "Instrument"){
var templateId = "1N3o951ECS5CAVGE6UgqBiCPC7H7LiJbL7Cd59G1xTnA";
chooseRowMethodI(templateId, i);
return "";
} else if(tags[i][0] == response && category[i][0] == "Motor" || tags[i][0] == response && category[i][0] == "Valve"){
var templateId = "1cSPD23qFd-34-IIr5eJ5a5OgHp9YR6xav9T28Y4Msec";
chooseRowMethodMV(templateId, i);
return "";
}
}
}
此错误 TypeError: Cannot read property 'getBlob' of undefined 表示您尝试从中 getBlob 的 object 没有任何 blob 数据。
第一个函数和第二个函数的唯一区别是第一行：row[17] 而不是 row[35] 这意味着以下内容：
var signature = row[17];
var sign = signature.substring(signature.indexOf("/") + 1);
var sigFolder = DriveApp.getFolderById("16C0DR-R5rJ4f5_2T1f-ZZIxoXQPKvh5C");
var files = sigFolder.getFilesByName(sign);
var n = 0;
var file;
while(files.hasNext()){
file = files.next();
n++;
} if(n>1){
SpreadsheetApp.getUi().alert('there is more than one file with this name' + sign);
}
因此，您可能永远不会访问 while 循环：
while(files.hasNext())
因为 var files = sigFolder.getFilesByName(sign); 从来没有下一个，因此，由于 file 没有初始化，所以它是 undefined.
总而言之，您遇到的错误是：
file 是 undefined
这意味着您从未在此变量上分配任何内容，这只会在您从未访问过 while 时发生，而这只会在 files 从未有过 next 时发生。
发生这种情况是因为那里根本没有任何文件，这意味着 sigFolder 上没有任何名为 sign 的文件。或者 row[17] 不包含有关您要访问的文件名的任何实质性信息。
所以，检查这个。
此外，请考虑以下有关迭代器的文档，例如您在 files 上处理的迭代器：
当您执行 files.next() 时，您正在访问迭代器的第一个元素：
关于 JavaScript 迭代器的一般文档：