java - 使用 opencsv 将 csv 文件解析为类 getter 方法

Question

我正在尝试使用 opencsv 传递一个 csv 文件。该 csv 文件有三列 (,)。如何使用各自的值将每一行解析为我的数组列表？请参阅下面的代码。

public class Customer { 

    private String accNum;  
    private String fName;   
    private String lName;   

    public Customer(String accNum, String fName, String lName) {        

    this.accNum = accNum;
    this.fName = fName;
    this.lName = lName;
     }

    //getters & setters
    ...
}

public class CustomerList{

public void getCustList(File file) throws IOException {     
    List <Customer> custList = new ArrayList <Customer>();
    CSVReader reader = new CSVReader (new FileReader (file));
    String [] header = reader.readNext();       
    List<String[]> cList = reader.readAll();

    for (int i =0 ; i < cList.size(); i++)
    {
        String[] line = cList.get(i); //not sure how to do this
        for (String list: line)
        {
            custList.add( new Customer (list));// constructor takes three arguments
        }
    }
}

Answer 1

我会将for循环修改为这样的

for(int i = 0; i < cList.size(); i++) {
    String[] line = cList.get(i);
    custList.add(new Customer(line[0], line[1], line[2]));
}

当然，假设列的顺序是 accNum、fName、lName。

Answer 2

它有点像 JDBC ResultSet。

List <Customer> custList = new ArrayList <Customer>();
CSVReader reader = new CSVReader (new FileReader (file));
String[] header = reader.readNext();
if (header == null)
{
    throw new RuntimeException("No header");
}

String[] row;
while ((row = reader.readNext()) != null)
{
    if (row.length != 3) {
        throw new RuntimeException("Unexpected number of entries: " + row.length);
    }
    custList.add(new Customer(row[0], row[1], row[2]));
}