URLEncoder.encode问题

遇到java里的URLEncoder.encode方法编码后与javascript的encodeURIComponent方法的结果有点不一样，找了一下资料，原来URLEncoder实现的是HTML形式的规范，jdk文档里这么说：

Utility class for HTML form encoding. This class contains static methods for converting a String to the application/x-www-form-urlencoded MIME format.

看到aliyun-oss-sdk的HttpUtil里是这么做的：

    /*** Encode a URL segment with special chars replaced.*/public static String urlEncode(String value, String encoding) {if (value == null) {return "";}try {String encoded = URLEncoder.encode(value, encoding);return encoded.replace("+", "%20").replace("*", "%2A").replace("~", "%7E").replace("/", "%2F");} catch (UnsupportedEncodingException e) {throw new IllegalArgumentException(OSS_RESOURCE_MANAGER.getString("FailedToEncodeUri"), e);}}

参考：
URLEncoder not able to translate space character