應用Javacsv.jar的jar包操作csv文件的辦法。本站提示廣大學習愛好者：（應用Javacsv.jar的jar包操作csv文件的辦法）文章只能為提供參考，不一定能成為您想要的結果。以下是應用Javacsv.jar的jar包操作csv文件的辦法正文
CSV其實就是COMMA SEPARATED VALUE的縮寫。csv文件是分隔文件，假如應用java的io流來寫，比擬費事，這裡為年夜家供給一個javacsv的jar包，這個很便利操作csv文件。
下載地址：http://xiazai.jb51.net/201608/yuanma/javcsv(jb51.net).rar
那若何應用呢？
只需看看以下一個例子，您一下就明確了。
import com.csvreader.CsvReader;
import com.csvreader.CsvWriter;
import org.junit.Test;
import java.io.IOException;
import java.nio.charset.Charset;
/**
* Created by javalittleman on 2016/8/18.
*/
public class TestCVS {
/**
* CSV導出
*
* @throws Exception
*/
@Test
public void exportCsv() throws IOException {
String srcCSV = "F:/cnt_programa.csv";
String targetFile = "F:/test.csv";
CsvReader reader = new CsvReader(srcCSV, ',', Charset.forName("UTF-8"));
CsvWriter write =new CsvWriter(targetFile,',',Charset.forName("UTF-8"));
//各字段以引號標志
write.setForceQualifier(true);
//途經表頭
//r.readHeaders();
//逐條讀取記載，直至讀完
String[] header = {};
while (reader.readRecord()) {
//把頭保留起來
if (reader.getCurrentRecord()==0){
header = reader.getValues();
}
//獲得以後記載地位
System.out.print(reader.getCurrentRecord() + ".");
//讀取一筆記錄
System.out.println(reader.getRawRecord());
String[] tmp = {reader.getValues()[0],reader.getValues()[1]};
//修正記載，並只寫入第一個字段和第二字段
if (!header[1].equals(tmp[1]) && ("".equals(tmp[1])||tmp==null)){
tmp[1]="空";
write.writeRecord(tmp);
}else{
write.writeRecord(new String[]{reader.getValues()[0],reader.getValues()[1]});
}
}
reader.close();
write.close();
}
}
cnt_programa.csv文件：
"id","pid","no","serial","name","createtime" "100000","","No100000","","公司消息","2016/8/23 17:12:09" "100001","","No100001","","熱門資訊","2016/8/24 17:12:36" "100046","100001","No100046","1","銀行為態","2016/8/1 10:36:31" "100052","100001","No100052","2","司法律例","2016/8/2 20:39:10" "100088","100001","No100088","3","專業文庫","2016/8/5 19:05:47"
test.csv
"id","pid" "100000","空" "100001","空" "100046","100001" "100052","100001" "100088","100001"
以上所述是小編給年夜家引見的應用Javacsv.jar的jar包操作csv文件的辦法，願望對年夜家有所贊助，假如年夜家有任何疑問請給我留言，小編會實時答復年夜家的。在此也異常感激年夜家對網站的支撐！
