String inputCsvFileName1 )throwsIOException{try{//创建CSV读对象CsvReader csvReader1 =newCsvReader(inputCsvFileName1);//读表头csvReader1.readHeaders(); String[] headers2= {"id","XW1","XW2","XW3","XW4","XW5","XW6","XW7","XW8","GXW"};intn=1;while(csvReader1.readRecord()){...
public void readCSV() { CSVReader reader = null; try { reader = new CSVReader(new InputStreamReader(new FileInputStream(xxx), "GBK")); String[] lineData = null; while((lineData = reader.readNext()) != null) { fileData.put(lineData); } } catch (Exception e) { try { reader.clo...
2. 读取CSV文件 下面的代码展示了如何读取CSV文件: importorg.apache.commons.csv.CSVFormat;importorg.apache.commons.csv.CSVRecord;importjava.io.FileReader;importjava.io.Reader;publicvoidreadCsvFile(StringfilePath){try{Readerin=newFileReader(filePath);Iterable<CSVRecord>records=CSVFormat.DEFAULT.withFirstRe...
importcom.opencsv.CSVReader;importjava.io.FileReader;publicclassReadCSV{publicstaticvoidmain(String[]args){try{// 创建CSVReader对象CSVReaderreader=newCSVReader(newFileReader("example.csv"));// 逐行读取String[]nextLine;while((nextLine=reader.readNext())!=null){// 逐格读取for(Stringcell:nextLine){...
util.StringTokenizer; public class readCSV { void readCSV(String readpath, ArrayList Nolist, ArrayList Dnalist) { File inFile = new File(readpath); try { BufferedReader reader = new BufferedReader(new FileReader(inFile)); //判断是否到达文件末尾 while (reader.ready()) { String line = ...
简介:Java环境下使用CsvReader()读取CSV文件 🐓CSV文件是什么 CSV 代表逗号分隔值,是一种非常流行的文件类型。CSV文件用于存储由逗号分隔的信息。文件的每一行都用于表示一个数据记录。 🐓CSV文件的读取 🚩进行CSV文件的解析 private List<CsvRow> getCsvFile(String filePath) {//新建一个CsvReadConfig配置对...
// 需要写入的 csv 文件路径 public static final String WRITE_CSV_FILE_PATH = "/Users/a123123/Work/flink-study/write_test.csv"; /** * 读取 csv 文件 */ public static void readCsvFile(String readCsvFilePath) { // 缓存读取的数据
publicclassReadLargeCSV{publicstaticvoidmain(String[] args){StringfilePath="path/to/your/large/csvfile.csv";try(BufferedReaderbr=newBufferedReader(newFileReader(filePath));CSVReadercsvReader=newCSVReader(br)) {String[] nextLine;while((nextLine = csvReader.readNext()) !=null) {// Process the...
以下是使用OpenCSV库读取和写入CSV文件的简单示例: 读取CSV文件 代码语言:txt 复制 import com.opencsv.CSVReader; import java.io.FileReader; import java.io.IOException; public class ReadCSV { public static void main(String[] args) { String csvFile = "path/to/your/file.csv"; try (CSVReader reade...
com.opencsv.exceptions.CsvValidationException; public class CSVReaderExample { public static void main(String[] args) { try { FileReader fileReader = new FileReader("path/to/your/csvfile.csv"); CSVReader csvReader = new CSVReader(fileReader); String[] row; while ((row = csvReader.readNext(...