Use Commons CSV (SANDBOX) to resolve CSV files

Use Commons CSV (SANDBOX) to resolve CSV files CSV is a common file format for saving table data, such as data exported from electronic table software.Commons CSV is an open source Java library that provides the function of analysis and writing to CSV files.It provides a simple and flexible way to handle various types of CSV files, and it is easy to integrate into the Java application. In order to use the Commons CSV library to analyze the CSV file, the following steps need to be performed: 1. Add dependencies: First, you need to add the Commons CSV library to the Java project.It can be completed by adding the following dependencies to the construction file of the project (such as Maven or Gradle): <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-csv</artifactId> <version>1.9</version> </dependency> 2. Create a CSVPARSER object: Using the CSVPARSER class can analyze the CSV file and convert it to the Java object.CSVParser objects can be created in the following way: Reader reader = new FileReader("path/to/csv/file.csv"); CSVParser parser = new CSVParser(reader, CSVFormat.DEFAULT); Here, `csvformat.default` indicates that the default CSV format can be used, and other CSV format options can be selected as needed. 3. Analyze CSV data: Use the CSVPARSER object to read and analyze the data in the CSV file line.Can be implemented through the following code example: for (CSVRecord record : parser) { String column1 = record.get(0); String column2 = record.get(1); // Processing CSV data } In the cycle, the `CSVRecord` object represents a line of data in the CSV file, and can obtain columns of specified index positions by obtaining the specified index position through the` Get Index) method. 4. Process CSV data: According to the need, you can process the obtained CSV data or store it into durable storage such as databases. 5. Close resources: After processing the CSV file, you need to ensure that the relevant resources are closed to release memory and resources.You can close the resources through the following ways: parser.close(); reader.close(); The above is the basic step of using the Commons CSV (Sandbox) to analyze the CSV file.By using the Commons CSV library, you can easily process and operate CSV files, so that Java applications can better interact with CSV data. Hope this article will help you!