我在尝试读取 csv 时收到此错误消息:
Exception in thread "main" java.lang.IllegalStateException: No header mapping was specified, the record values can't be accessed by name
at org.apache.commons.csv.CSVRecord.get(CSVRecord.java:99)
at mockdata.MockData.main(MockData.java:33)
Java 结果:1
我正在使用 Apache Commons CSV 库 1.1。尝试用谷歌搜索错误消息,我得到的唯一东西是 grepcode 等网站上的代码列表。
这是我的代码:
package mockdata;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVRecord;
public class MockData
{
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws FileNotFoundException, IOException
{
Reader in = new InputStreamReader(MockData.class.getClassLoader()
.getResourceAsStream("MOCK_DATA.csv"), "UTF-8");
Iterable<CSVRecord> records = CSVFormat.EXCEL.parse(in);
for (CSVRecord record : records)
{
String lastName = record.get("last_name");
String firstName = record.get("first_name");
System.out.println("firstName: " + firstName + " lastName: " + lastName);
}
}
}
CSV的内容:
first_name,last_name,address1,city,state,zip,country,phone,email
Robin,Lee,668 Kinsman Road,Hagerstown,TX,94913,United States,5-(078)623-0713,rlee0@e-recht24.de
Bobby,Moreno,68 Dorton Avenue,Reno,AZ,79934,United States,5-(080)410-6743,bmoreno1@ihg.com
Eugene,Alexander,3 Bunker Hill Court,Newark,MS,30066,United States,5-(822)147-6867,ealexander2@gmpg.org
Katherine,Crawford,3557 Caliangt Avenue,New Orleans,OR,23289,United States,2-(686)178-7222,kcrawford3@symantec.com
它位于我的 src 文件夹中。