How to deal with multi -language character sets: CSV expansion box in the Java class library
How to deal with multi -language character sets -CSV expansion box in the Java class library
introduce:
When dealing with multi -language character sets, the Java class library provides rich tools and methods.This article will focus on the method of using the CSV expansion box in the Java library to process multi -language character sets to help developers better process data containing non -ASCII characters such as Chinese.
Introduction to the CSV expansion box:
CSV (comma separation value) is a commonly used file format for storing table data.The CSV expansion box in the Java class library is a powerful and easy -to -use tool. It provides various functions to process CSV files, including reading, writing, analysis, and generating CSV files.
Method of handling multi -language character sets:
1. The dependencies of importing the CSV expansion box:
Add the dependencies of the CSV extension box in the construction file of the project so that the functions it provided can be used.For example, when using Maven to build a project, you can add the following dependencies to the pom.xml file:
<dependency>
<groupId>com.opencsv</groupId>
<artifactId>opencsv</artifactId>
<version>5.5.2</version>
</dependency>
2. Read the CSV file:
Use the CSVReader class to read CSV files containing multi -language character sets.The following is an example code for reading CSV files:
import com.opencsv.CSVReader;
public class CSVReaderExample {
public static void main(String[] args) {
try (CSVReader reader = new CSVReader(new FileReader("data.csv"))) {
String[] nextLine;
while ((nextLine = reader.readNext()) != null) {
// Process each line of data
for (String value : nextLine) {
// Perform the corresponding operation here, such as printing or storage data
System.out.println(value);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
3. Write into CSV file:
Use the CSVWRiter class to write data containing multi -language character sets into the CSV file.The following is an example code written to the CSV file:
import com.opencsv.CSVWriter;
public class CSVWriterExample {
public static void main(String[] args) {
try (CSVWriter writer = new CSVWriter(new FileWriter("data.csv"))) {
String [] record = {"Zhang San", "Li Si", "Wang Wu"};
writer.writeNext(record);
} catch (IOException e) {
e.printStackTrace();
}
}
}
4. Set the character set:
Set the second parameter in the constructor of CSVReader and CSVWriter to the character set in order to properly handle the multi -language character set.For example, set to UTF-8 character set:
CSVReader reader = new CSVReader(new InputStreamReader(new FileInputStream("data.csv"), "UTF-8"));
CSVWriter writer = new CSVWriter(new OutputStreamWriter(new FileOutputStream("data.csv"), "UTF-8"));
Summarize:
Using the CSV extension box in the Java library, developers can easily handle the CSV files of multi -language character sets.This article introduces how to import the dependencies of the CSV extension box, read and write a CSV file containing multi -language character sets, and sets the method of character set.It is hoped that this article can help developers better handle the needs of multi -language character sets.
