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逐行读入:
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
public class NioReadFile {
public static void main(String[] args) {
String fileName = "D:\\CIME\\measure.CIME";
String charset = CommonsMethods.getFileCharset(fileName);
System.out.println("charset=" + charset); //charset是编码格式
try {
List<String> lines = Files.readAllLines(Paths.get(fileName),
Charset.forName(charset));
for (String line : lines) {
System.out.println(line);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
逐行输出:
//将邮箱 姓名和最后生成的链接数据写入csv文件
private void writeCsv(String content, String fileName) throws IOException {
File f = new File(defaultCsvpath);
f.setWritable(true);
if (!f.exists()) { //如果该路径不存在,就创建该路径
f.mkdir();
}
String filePath = defaultCsvpath + "/" + fileName; //得到完整文件路径
FileOutputStream fos = null;
FileChannel fc_out = null;
try {
fos = new FileOutputStream(filePath, true);
fc_out = fos.getChannel();
ByteBuffer buf = ByteBuffer.wrap(content.getBytes());
buf.put(content.getBytes());
buf.flip();
fc_out.write(buf);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (null != fc_out) {
fc_out.close();
}
if (null != fos) {
fos.close();
}
}
}
参考:http://xurichusheng.iteye.com/blog/2266842,https://blog.csdn.net/cynhafa/article/details/7410035
stream方式:
http://justcode.ikeepstudying.com/2017/05/java-java8%E6%B5%81%E9%80%90%E8%A1%8C%E8%AF%BB%E5%8F%96%E6%96%87%E4%BB%B6/