一、新增依賴到pom.xml

        <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.6</version>
        </dependency>
        <!-- https://
 
mvnrepository.com/artifact/org.apache.commons/commons-csv -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-csv</artifactId>
            <version>1.6</version>
        </dependency>

二、上程式碼

package
 
 com.yungoal.dbtest.tools;

import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVPrinter;
import org.apache.commons.io.FileUtils;

import java.io.FileWriter;
import java.io.IOException;
import java.util.List;

public class CsvOutputTool {
    /**
     * 寫入csv檔案
     * 
 
@param headers  列頭
     * @param data     資料內容
     * @param filePath 建立的csv檔案路徑
     **/
    public static void writeCsv(Object[] headers, List<Object[]> data, String filePath) throws IOException {
//初始化csvformat
        CSVFormat formator = CSVFormat.DEFAULT.withRecordSeparator("\n");
        //建立FileWriter物件
        FileWriter fileWriter = new FileWriter(filePath, true);
        //建立CSVPrinter物件
        CSVPrinter printer = new CSVPrinter(fileWriter, formator);
        //寫入列頭資料
        printer.printRecord(headers);
        if (null != data) {
            //迴圈寫入資料
            for (Object[] lineData : data) {
                printer.printRecord(lineData);
            }
        }
        fileWriter.flush();
        printer.close(true);
        fileWriter.close();
    }
}