Java代码

OutputStream out = new FileOutputStream(file);OutputStreamWriter writer = new OutputStreamWriter(out, "UTF-8");writer.write(new String(new byte[] { (byte) 0xEF, (byte) 0xBB,(byte) 0xBF }));writer.write("c1,c2,c3\n");writer.write("中文1,中文2,中文3\n");writer.flush();writer.close();

重点：

1. 设置UTF-8编码。

2. 文件头写入new byte[] { (byte) 0xEF, (byte) 0xBB,(byte) 0xBF }