XLSX

问题 My application generates XLSX files based on a users requirements. After the XLSX file is generated the user is redirected to where the file is saved using Response.Redirect... Response.Redirect("filename.xlsx") When the user then opens the file... they recieve this message. The file you are trying to open, 'filename.xls', is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to

问题 My application generates XLSX files based on a users requirements. After the XLSX file is generated the user is redirected to where the file is saved using Response.Redirect... Response.Redirect("filename.xlsx") When the user then opens the file... they recieve this message. The file you are trying to open, 'filename.xls', is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to

问题 I have a directory with Excel files: sites=list.files(pattern='[.]xls') > sites [1] "test1.xls" "test2.xls" "test3.xls" This works: a=read.xlsx(sites[1],14) So I would expect that this would work too: df=data.frame() for (i in sites){ x=read.xlsx(sites[i],14) x=x[560:831,12:14] df=rbind.fill(df,x) } However, that gives: Error in loadWorkbook(file) : Cannot find NA What is going wrong here? Also, is there a way to vectorise this - the files are large and loading is slow; I can't use read.xlsx2

问题 when i tried to create a workbook in normal java class it is creating but when i tried to run the same on servlet it is throwing exceptions Normal java class import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class Sampleclass { public static void main(String[] args) { FileInputStream file; try { file = new FileInputStream

问题 I can't detect mimetype for xlsx Excel file via PHP because it's zip archive. File utilite file file.xlsx file.xlsx: Zip archive data, at least v2.0 to extract PECL fileinfo $finfo = finfo_open(FILEINFO_MIME_TYPE); finfo_file($finfo, "file.xlsx"); application/zip How to validate it? Unpack and view structure? But if it's arcbomb? 回答1: I know this works for zip files, but I'm not too sure about xlsx files. It's worth a try: To list the files in a zip archive: $zip = new ZipArchive; $res = $zip

问题 Hi I'm trying to create a function that will store a range of data selected by a user along with a user's custom name and then using ADO the data will be stored in a new Excel sheet with the user's custom name as the sheet name. So far I've gotten an ADO connection working and can read and write data to the .xlsx file but when I try and create a new sheet by creating a new table I get an error that my sheet name is not correct. I've used test and testName and after digging around I am stumped

问题 I'm trying to use POI.APACHE to edit excel files in java. I have to convert a .xls to .xlsx because I need to send the file to sharepoint. Thats why it just can't be renamed with a different extension. How would I go about this? I couldn't find any examples on their site. Thanks 回答1: import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io

问题 Hi i wanna run my birt report through a java program in ubuntu machine and also need to export to xlsx format. Is any way to do this? I can find to run birt report but not able to find program to export the report. The code i am looking is : here. But it export HTML i want xlsx format, moreover some of the classed in this example are depricated. How can i achieve this please anyone help me? 回答1: This is actually quite easy. Export to XSLX is something that birt runtime is doing "out of the

问题 Hi i wanna run my birt report through a java program in ubuntu machine and also need to export to xlsx format. Is any way to do this? I can find to run birt report but not able to find program to export the report. The code i am looking is : here. But it export HTML i want xlsx format, moreover some of the classed in this example are depricated. How can i achieve this please anyone help me? 回答1: This is actually quite easy. Export to XSLX is something that birt runtime is doing "out of the

问题 I want to read just 10 lines from Excel files (xlsx) without loading the whole file at once, as it can't be done on one of my machines (low memory). I tried using import xlrd import pandas as pd def open_file(path): xl = pd.ExcelFile(path) reader = xl.parse(chunksize=1000) for chunk in reader: print(chunk) It seems like the file is loaded first then divided into parts. How to read only first lines? 回答1: Due to the nature of xlsx files (which are essentially a bunch of xml files zipped