浏览器下载--解决中文文件名问题--工具类

//import sun.misc.BASE64Encoder;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Base64;


public class DownLoadUtils {

    public static String getFileName(String agent, String filename) throws UnsupportedEncodingException {
        if (agent.contains("MSIE")) {
            // IE浏览器
            filename = URLEncoder.encode(filename, "utf-8");
            filename = filename.replace("+", " ");
        } else if (agent.contains("Firefox")) {
            // 火狐浏览器
            Base64.Encoder encoder = Base64.getEncoder();
            String str = encoder.encodeToString(filename.getBytes("utf-8"));
            filename = "=?utf-8?B?" + str + "?=";

//            BASE64Encoder base64 = new BASE64Encoder();
//            filename = "=?utf-8?B?" + base64.encode(filename.getBytes("utf-8")) + "?=";
        } else {
            // 其它浏览器
            filename = URLEncoder.encode(filename, "utf-8");
        }
        return filename;
    }
}