opencsv 简单例子

写文件

public static void main(String[] args) throws Exception {  
        File file = new File("e:\\write.csv");  
        Writer writer = new FileWriter(file);  
        CSVWriter csvWriter = new CSVWriter(writer, ',');  
        String[] strs = {"abc" , "def" , "opq"};  
        csvWriter.writeNext(strs);  
        csvWriter.close();  
    } 

读文件

public void Read(String  dir) throws Exception {
        File csv = new File(dir + "/file", "readerTest.csv");

        CSVReader reader = new CSVReader(new InputStreamReader(new FileInputStream(csv), "GBK"), ',');
        String [] header = reader.readNext();   //用readnext读取之后就不存在于stream中了
        for (String s : header) {
            System.out.print(s + ",");
        }
        System.out.println("");

        List list = reader.readAll(); 
        System.out.println(list.get(0)[0]);
        System.out.println("");
    }