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	encodeFragment(String fragment, String encoding) Encodes the given URI fragment.
static String	encodeHost(String host, String encoding) Encodes the given URI host.
static String	encodeHttpUrl(String httpUrl, String encoding) Encodes the given HTTP URI into an encoded String.
static String	encodePath(String path, String encoding) Encodes the given URI path.
static String	encodePathSegment(String segment, String encoding) Encodes the given URI path segment.
static String	encodePort(String port, String encoding) Encodes the given URI port.
static String	encodeQuery(String query, String encoding) Encodes the given URI query.
static String	encodeQueryParam(String queryParam, String encoding) Encodes the given URI query parameter.
static String	encodeScheme(String scheme, String encoding) Encodes the given URI scheme.
static String	encodeUri(String uri, String encoding) Encodes the given source URI into an encoded String.
static String	encodeUriComponents(String scheme, String authority, String userinfo, String host, String port, String path, String query, String fragment, String encoding) Encodes the given source URI components into an encoded String.
static String	encodeUserInfo(String userInfo, String encoding) Encodes the given URI user info.

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

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

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

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.

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

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.

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

encodeUserInfo

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

Encodes the given URI user info.

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.

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.

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.

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.

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.

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.

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.

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.
• All other characters are converted into one or more bytes using the given encoding scheme. Each of the resulting bytes is written as a hexadecimal string in the %xy format.
• 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:

UnsupportedEncodingException - when the given encoding parameter is not supported

See Also:

URLDecoder.decode(String, String)