Purecsv framework profile: CSV data processing tool in Java class library
PURECSV is a Java class library for processing CSV (comma separation value) data.CSV is a common data storage format, which is commonly used in data exchange and import/export.PURECSV provides a powerful API that makes reading and writing CSV files simple and efficient.
Purecsv uses the method of annotation drive, making the read and write of CSV data simple and clear.It supports mapped the Java object to CSV data and serialize and deeperate.Developers can mark the names, sequences and other attributes of the CSV field on the Java object attribute, and then read and write the CSV file with the Purecsv API.
The following is a simple example of using PureCSV:
First, we need to create a Java object to represent the line data of the CSV file.Suppose we have a class called Person, which has some attributes, such as names, age and occupation.
public class Person {
@CsvColumn("Name")
private String name;
@CsvColumn("Age")
private int age;
@CsvColumn("Occupation")
private String occupation;
// Getters and setters
}
In this example, we used the annotation of `@csvcolumn` to mark the mapping relationship between the attributes and the CSV field.
Next, we can read and write CSV files with PureCSV.Suppose we have a CSV file called "PeOPLE.CSV", which contains information about some personnel.
Read the CSV file and map it to the example code of the Person object as follows:
CsvReader<Person> csvReader = new CsvReader<>(Person.class);
List<Person> people = csvReader.read("people.csv");
In this example, we created a CSVReader object and passed into the Person class as the type parameter.Then, we call the `Read ()" method to read the CSV file and map it to the list of the Person object.
The example code written to the CSV file is as follows:
CsvWriter<Person> csvWriter = new CsvWriter<>(Person.class);
csvWriter.write("people.csv", people);
In this example, we created a CSVWriter object and passed into the Person class as the type parameter.Then, we call the `write () method to write the list of the Person object into the CSV file.
By using PureCSV, we can handle CSV data simple and efficiently.It provides a flexible way to read and write CSV files, and can easily map CSV data to the Java object.Whether it is processing a large amount of data or simply importing/export data, Purecsv is a reliable choice.