如何使用opencsv与我的集合（列表）？

问题描述

我需要解析2维列表，这里是我的模式列表：

I need to parse 2 dimensional list, here is my schema list :

list (size=12) 
->[0] = "export.SampleJ:12432"  
   --> id = 12432  
   --> dateCreatedSample = "Tue Feb 03 19:04:23 CST 2009"  
   --> ttId = 0  
   --> chipId = 1012  
   --> ...  
->[1] = "export.SampleJ:12433"
   --> id = 12433
   --> ...
->[2] ...

p>

I tried :

 List<String[]> allElements = list.readAll();
 StringWriter sw = new StringWriter();
 CSVWriter writer = new CSVWriter(sw);
 writer.writeAll(allElements);

但我有这个错误：没有方法的签名：java.util.ArrayList.readAll适用于参数类型：（）values：[]

but I have this error : No signature of method: java.util.ArrayList.readAll() is applicable for argument types: () values: []

也尝试：

 CSVWriter writer = new CSVWriter(new FileWriter("MyFile.csv"));
 String[] entries = list;
 writer.writeNext(entries);
 writer.close();

我得到一个csv文件，但只有：export.SampleJ：12432 SampleJ：12432，...

I get a csv file, but with only : "export.SampleJ:12432", "export.SampleJ:12432", ...

如何解析id，dateCreatedSample等等？

How can I parse id, dateCreatedSample, etc ?

推荐答案

您需要添加一个方法到 SampleJ 将其转换为 String [] ，例如

You need to add a method to SampleJ to convert it into a String[], e.g.

class SampleJ {
    // ...
    public String[] toStringArray =
        Arrays.asList(String.valueOf(getId()),
                      String.valueOf(getDateCreatedSample()),
                      String.valueOf(getTtId()),
                      String.valueOf(getChipId()));
}

然后循环写入所有行，例如

then loop to write all lines, e.g.

for (SampleJ elem: list) {
    writer.writeNext(elem.toStringArray());
}

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