## org.springframework.web.util
Class UriUtils

    java.lang.Object
      org.springframework.web.util.UriUtils

    public abstract class UriUtils

extends Object

Utility class for URI encoding and decoding based on RFC 3986. Offers encoding methods for the various URI components.

All `encode*(String, String` methods in this class operate in a similar way:

- Valid characters for the specific URI component as defined in RFC 3986 stay the same.
- All other characters are converted into one or more bytes in the given encoding scheme. Each of the resulting bytes is written as a hexadecimal string in the "`%xy`" format.

Since:
  3.0
Author:
  Arjen Poutsma
See Also:
  RFC 3986

Constructor Summary
`UriUtils()`

Method Summary
`static String` `decode(String source, String encoding)` Decodes the given encoded source String into an URI.
`static String` `encodeAuthority(String authority, String encoding)` Encodes the given URI authority with the given encoding.
`static String` `encodeFragment(String fragment, String encoding)` Encodes the given URI fragment with the given encoding.
`static String` `encodeHost(String host, String encoding)` Encodes the given URI host with the given encoding.
`static String` `encodeHttpUrl(String httpUrl, String encoding)` Deprecated. in favor of `UriComponentsBuilder`; see note about query param encoding
`static String` `encodePath(String path, String encoding)` Encodes the given URI path with the given encoding.
`static String` `encodePathSegment(String segment, String encoding)` Encodes the given URI path segment with the given encoding.
`static String` `encodePort(String port, String encoding)` Encodes the given URI port with the given encoding.
`static String` `encodeQuery(String query, String encoding)` Encodes the given URI query with the given encoding.
`static String` `encodeQueryParam(String queryParam, String encoding)` Encodes the given URI query parameter with the given encoding.
`static String` `encodeScheme(String scheme, String encoding)` Encodes the given URI scheme with the given encoding.
`static String` `encodeUri(String uri, String encoding)` Deprecated. in favor of `UriComponentsBuilder`; see note about query param encoding
`static String` `encodeUriComponents(String scheme, String authority, String userInfo, String host, String port, String path, String query, String fragment, String encoding)` Deprecated. in favor of `UriComponentsBuilder`
`static String` `encodeUserInfo(String userInfo, String encoding)` Encodes the given URI user info with the given encoding.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### UriUtils

    public UriUtils()

Method Detail

### encodeUri

    public static String encodeUri(String uri,
                                   String encoding)
                            throws UnsupportedEncodingException

  Deprecated. in favor of `UriComponentsBuilder`; see note about query param encoding

  Encodes the given source URI into an encoded String. All various URI components are encoded according to their respective valid character sets.

  Note that this method does not attempt to encode "=" and "&" characters in query parameter names and query parameter values because they cannot be parsed in a reliable way. Instead use:

        UriComponents uriComponents = UriComponentsBuilder.fromUri("/path?name={value}").buildAndExpand("a=b");
        String encodedUri = uriComponents.encode().toUriString();

  Parameters:
    `uri` - the URI to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded URI
  Throws:
    `IllegalArgumentException` - when the given uri parameter is not a valid URI
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeHttpUrl

    public static String encodeHttpUrl(String httpUrl,
                                       String encoding)
                                throws UnsupportedEncodingException

  Deprecated. in favor of `UriComponentsBuilder`; see note about query param encoding

  Encodes the given HTTP URI into an encoded String. All various URI components are encoded according to their respective valid character sets.

  Note that this method does not support fragments (`#`), as these are not supposed to be sent to the server, but retained by the client.

  Note that this method does not attempt to encode "=" and "&" characters in query parameter names and query parameter values because they cannot be parsed in a reliable way. Instead use:

        UriComponents uriComponents = UriComponentsBuilder.fromHttpUrl("/path?name={value}").buildAndExpand("a=b");
        String encodedUri = uriComponents.encode().toUriString();

  Parameters:
    `httpUrl` - the HTTP URL to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded URL
  Throws:
    `IllegalArgumentException` - when the given uri parameter is not a valid URI
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeUriComponents

    public static String encodeUriComponents(String scheme,
                                             String authority,
                                             String userInfo,
                                             String host,
                                             String port,
                                             String path,
                                             String query,
                                             String fragment,
                                             String encoding)
                                      throws UnsupportedEncodingException

  Deprecated. in favor of `UriComponentsBuilder`

  Encodes the given source URI components into an encoded String. All various URI components are optional, but encoded according to their respective valid character sets.

  Parameters:
    `scheme` - the scheme
    `authority` - the authority
    `userInfo` - the user info
    `host` - the host
    `port` - the port
    `path` - the path
    `query` - the query
    `fragment` - the fragment
    `encoding` - the character encoding to encode to
  Returns:
    the encoded URI
  Throws:
    `IllegalArgumentException` - when the given uri parameter is not a valid URI
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeScheme

    public static String encodeScheme(String scheme,
                                      String encoding)
                               throws UnsupportedEncodingException

  Encodes the given URI scheme with the given encoding.

  Parameters:
    `scheme` - the scheme to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded scheme
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeAuthority

    public static String encodeAuthority(String authority,
                                         String encoding)
                                  throws UnsupportedEncodingException

  Encodes the given URI authority with the given encoding.

  Parameters:
    `authority` - the authority to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded authority
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeUserInfo

    public static String encodeUserInfo(String userInfo,
                                        String encoding)
                                 throws UnsupportedEncodingException

  Encodes the given URI user info with the given encoding.

  Parameters:
    `userInfo` - the user info to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded user info
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeHost

    public static String encodeHost(String host,
                                    String encoding)
                             throws UnsupportedEncodingException

  Encodes the given URI host with the given encoding.

  Parameters:
    `host` - the host to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded host
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodePort

    public static String encodePort(String port,
                                    String encoding)
                             throws UnsupportedEncodingException

  Encodes the given URI port with the given encoding.

  Parameters:
    `port` - the port to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded port
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodePath

    public static String encodePath(String path,
                                    String encoding)
                             throws UnsupportedEncodingException

  Encodes the given URI path with the given encoding.

  Parameters:
    `path` - the path to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded path
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodePathSegment

    public static String encodePathSegment(String segment,
                                           String encoding)
                                    throws UnsupportedEncodingException

  Encodes the given URI path segment with the given encoding.

  Parameters:
    `segment` - the segment to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded segment
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeQuery

    public static String encodeQuery(String query,
                                     String encoding)
                              throws UnsupportedEncodingException

  Encodes the given URI query with the given encoding.

  Parameters:
    `query` - the query to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded query
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeQueryParam

    public static String encodeQueryParam(String queryParam,
                                          String encoding)
                                   throws UnsupportedEncodingException

  Encodes the given URI query parameter with the given encoding.

  Parameters:
    `queryParam` - the query parameter to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded query parameter
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### encodeFragment

    public static String encodeFragment(String fragment,
                                        String encoding)
                                 throws UnsupportedEncodingException

  Encodes the given URI fragment with the given encoding.

  Parameters:
    `fragment` - the fragment to be encoded
    `encoding` - the character encoding to encode to
  Returns:
    the encoded fragment
  Throws:
    `UnsupportedEncodingException` - when the given encoding parameter is not supported

### decode

    public static String decode(String source,
                                String encoding)
                         throws UnsupportedEncodingException

  Decodes the given encoded source String into an URI. Based on the following rules:
  - Alphanumeric characters `"a"` through `"z"`, `"A"` through `"Z"`, and `"0"` through `"9"` stay the same.
  - Special characters `"-"`, `"_"`, `"."`, and `"*"` stay the same.
  - A sequence "`%xy`" is interpreted as a hexadecimal representation of the character.

  Parameters:
    `source` - the source string
    `encoding` - the encoding
  Returns:
    the decoded URI
  Throws:
    `IllegalArgumentException` - when the given source contains invalid encoded sequences
    `UnsupportedEncodingException` - when the given encoding parameter is not supported
  See Also:
    `URLDecoder.decode(String, String)`