Detailed explanation
Detailed explanation
Table/IO CSV SUPPORT is a Java class library for processing CSV files.CSV (comma division value) is a common text file format for storing table data.This type of library provides a rich set of functions, enabling developers to easily read and write CSV files.
This framework has the following technical principles:
1. CSV file reading: The framework provides a simple way to read data in the CSV file.Developers only need to specify the CSV file path and use the corresponding API to read the data in the file.The underlying layer uses streaming operations, reads CSV files one by one, and divides the data of each line into fields.
The following is an example code:
CsvReader csvReader = new CsvReader("data.csv");
csvreader.readheaders (); // Read the header of the CSV file
while (csvReader.readRecord()) {
String column1 = csvreader.get ("column1"); // Obtain data through the list name
String column2 = csvReader.get("Column2");
// Data processing
}
csvReader.close();
2. CSV file writing: This framework also provides a simple way to write data into the CSV file.Developers can create a CSVWriter object and use the corresponding API to write the data into the file.
The following is an example code:
CsvWriter csvWriter = new CsvWriter("data.csv");
csvwriter.write ("colorn1", "colorn2", "colorn3"); //
csvwriter.write ("Value1", "Value2", "Value3"); // Write the data to the data
csvWriter.write("Value4", "Value5", "Value6");
// Write more data
csvwriter.close (); // Close the CSVWRiter object
3. Custom configuration: This framework allows developers to customize configuration of the reading and writing of CSV files.You can set the field separation symbols, text packaging symbols, number of rows, etc.This can adapt to different CSV file formats and specific needs.
The following is an example code:
CsvReader csvReader = new CsvReader("data.csv");
CSVReader.setDelimiter ('\ t'); // Set the field separation symbol as a symbol
CsvWriter csvWriter = new CsvWriter("data.csv");
csvwriter.setquotechar ('\' '); // Set text packaging symbols as single quotes
csvwriter.SetskipemptyRcords (TRUE); // jump over the empty record
// Read or write to CSV files
Summarize:
Table/IO CSV Support framework is a powerful Java class library for processing CSV files.It provides a simple and easy -to -use API that enables developers to easily read and write CSV files, and can be customized according to needs.Whether it is processing large data sets or simple table data, the framework can meet the needs of developers.