Question

我需要能够根据csv文件验证用户输入的电子邮件和密码，我必须确保它们在文件中并且它们彼此匹配，例如; ojones@coldmail.net ocrabc。目前我可以拆分文件并将其打印到屏幕上，但我找不到将其放入数组的方法，然后我可以参考。没有阵列有没有更好的方法来解决这样的问题？

import java.io.*;

import java.util.Arrays;

public class CSVRead{

public static void main(String[] arg) throws Exception {
    BufferedReader CSVFile =
        new BufferedReader(new FileReader("testa453.csv"));
    String dataRow = CSVFile.readLine();
    while (dataRow != null){
        String[] dataArray = dataRow.split(",");
        for (String item:dataArray) {
            System.out.print(item + "\t");
        }
        System.out.println();
        dataRow = CSVFile.readLine();
    }
    CSVFile.close();
    System.out.println();

}

}

EDIT;只是为了澄清我是Java的新手，并且想要使用和数组，除非有更有效的方法来解决问题;

Answer 1

您可以创建Map电子邮件 - ＆gt;密码

import java.io.*;

import java.util.Arrays;

public class CSVRead{

public static void main(String[] arg) throws Exception {
    Map<String, String> emailPasswordMap = new HashMap<String, String> ();
    BufferedReader CSVFile =
        new BufferedReader(new FileReader("testa453.csv"));
    String dataRow = CSVFile.readLine();
    while (dataRow != null){
        String[] dataArray = dataRow.split(",");
        emailPasswordMap.put (dataArray[0], dataArray[1]);
        dataRow = CSVFile.readLine();
    }
    CSVFile.close();

    String email = "xxx";
    String password = "yyy";

    if (password.equals (emailPasswordMap.get (email)) {
        System.out.println ("Email/password combination is valid");
    }
    else {
        System.out.println ("Email/password combination is invalid");
    }
}

如何验证从没有专门构建的CSV解析器的CSV备份的输入数据

1 个答案: