bufferedReader仅读取本地csv文件

我是Java新手,我试图使用这个类返回 “测试.csv”

public class CSVtoArray2 {

    public static final String filename = "C:\\eclipse\\workspace\\project\\src\\main\\webapp\\resources\\csv\\test.csv";


    public String testMethod() throws IOException {
        BufferedReader wr = null;

        try {

            wr = new BufferedReader(new FileReader(new File(filename)));

            StringBuffer stringBuffer = new StringBuffer();
            String line;
            while ((line = wr.readLine()) != null) {
                stringBuffer.append(line);
                stringBuffer.append("\n");
            }
            wr.close();
            return stringBuffer.toString();
        } finally {
            wr.close();
        }
    }
}

当我改变时

“C:\eclipse\workspace\project\src\main\webapp\resources\csv\test .csv“ 至“/resources/csv/test.csv”,

该类得到null返回。

谢谢

更新:

解决方案:

ClassLoader classLoader = getClass().getClassLoader();
File filename = new File(classLoader.getResource("csv/test.csv").getFile());