How do I encode URI parameter values

Question

I want to send a URI as the value of a query matrix parameter  Before I can append it to an existing URI  I need to encode it according to RFC 2396  For example  given the input   http   google com resource key value1  amp  value2  I expect the output   http 3a 2f 2fgoogle com 2fresource 3fkey 3dvalue1 2520 26 2520value2  Neither java net URLEncoder nor java net URI will generate the right output  URLEncoder is meant for HTML form encoding which is not the same as RFC 2396  URI has no mechanism for encoding a single value at a time so it has no way of knowing that value1 and value2 are part of the same key

User · Answer

I don t have enough reputation to comment on answers  but I just wanted to note that downloading the JSR-311 api by itself will not work  You need to download the reference implementation  jersey     Only downloading the api from the JSR page will give you a ClassNotFoundException when the api tries to look for an implementation at runtime

User · Answer

Mmhh I know you ve already discarded URLEncoder  but despite of what the docs say  I decided to give it a try  You said   For example  given an input  http   google com resource key value I expect the output  http 3a 2f 2fgoogle com 2fresource 3fkey 3dvalue  So  C  oreyes samples java URL gt type URLEncodeSample java import java net     public class URLEncodeSample       public static void main  String    args   throws Throwable           System out println  URLEncoder encode  args 0    quot UTF-8 quot               C  oreyes samples java URL gt javac URLEncodeSample java  C  oreyes samples java URL gt java URLEncodeSample  quot http   google com resource key value quot  http 3A 2F 2Fgoogle com 2Fresource 3Fkey 3Dvalue  As expected  What would be the problem with this

User · Answer

It seems that CharEscapers from Google GData-java-client has what you want  It has uriPathEscaper method  uriQueryStringEscaper  and generic uriEscaper   All return Escaper object which does actual escaping   Apache License

User · Answer

You could also use Spring s UriUtils

User · Answer

It seems that CharEscapers from Google GData-java-client has what you want  It has uriPathEscaper method  uriQueryStringEscaper  and generic uriEscaper   All return Escaper object which does actual escaping   Apache License

User · Answer

I wrote my own  it s short  super simple  and you can copy it if you like  http   www dmurph com 2011 01 java-uri-encoder

User · Answer

Mmhh I know you ve already discarded URLEncoder  but despite of what the docs say  I decided to give it a try  You said   For example  given an input  http   google com resource key value I expect the output  http 3a 2f 2fgoogle com 2fresource 3fkey 3dvalue  So  C  oreyes samples java URL gt type URLEncodeSample java import java net     public class URLEncodeSample       public static void main  String    args   throws Throwable           System out println  URLEncoder encode  args 0    quot UTF-8 quot               C  oreyes samples java URL gt javac URLEncodeSample java  C  oreyes samples java URL gt java URLEncodeSample  quot http   google com resource key value quot  http 3A 2F 2Fgoogle com 2Fresource 3Fkey 3Dvalue  As expected  What would be the problem with this

User · Answer

You could also use Spring s UriUtils

User · Answer

Jersey s UriBuilder encodes URI components using application x-www-form-urlencoded and RFC 3986 as needed  According to the Javadoc     Builder methods perform contextual encoding of characters not permitted in the corresponding URI component following the rules of the application x-www-form-urlencoded media type for query parameters and RFC 3986 for all other components  Note that only characters not permitted in a particular component are subject to encoding so  e g   a path supplied to one of the path methods may contain matrix parameters or multiple path segments since the separators are legal characters and will not be encoded  Percent encoded values are also recognized where allowed and will not be double encoded

User · Answer

I think that the URI class is the one that you are looking for

User · Answer

I don t have enough reputation to comment on answers  but I just wanted to note that downloading the JSR-311 api by itself will not work  You need to download the reference implementation  jersey     Only downloading the api from the JSR page will give you a ClassNotFoundException when the api tries to look for an implementation at runtime

User · Answer

I think that the URI class is the one that you are looking for

User · Answer

I think that the URI class is the one that you are looking for

User · Answer

Jersey s UriBuilder encodes URI components using application x-www-form-urlencoded and RFC 3986 as needed  According to the Javadoc     Builder methods perform contextual encoding of characters not permitted in the corresponding URI component following the rules of the application x-www-form-urlencoded media type for query parameters and RFC 3986 for all other components  Note that only characters not permitted in a particular component are subject to encoding so  e g   a path supplied to one of the path methods may contain matrix parameters or multiple path segments since the separators are legal characters and will not be encoded  Percent encoded values are also recognized where allowed and will not be double encoded

User · Answer

Jersey s UriBuilder encodes URI components using application x-www-form-urlencoded and RFC 3986 as needed  According to the Javadoc     Builder methods perform contextual encoding of characters not permitted in the corresponding URI component following the rules of the application x-www-form-urlencoded media type for query parameters and RFC 3986 for all other components  Note that only characters not permitted in a particular component are subject to encoding so  e g   a path supplied to one of the path methods may contain matrix parameters or multiple path segments since the separators are legal characters and will not be encoded  Percent encoded values are also recognized where allowed and will not be double encoded

User · Answer

It seems that CharEscapers from Google GData-java-client has what you want  It has uriPathEscaper method  uriQueryStringEscaper  and generic uriEscaper   All return Escaper object which does actual escaping   Apache License

User · Answer

Jersey s UriBuilder encodes URI components using application x-www-form-urlencoded and RFC 3986 as needed  According to the Javadoc     Builder methods perform contextual encoding of characters not permitted in the corresponding URI component following the rules of the application x-www-form-urlencoded media type for query parameters and RFC 3986 for all other components  Note that only characters not permitted in a particular component are subject to encoding so  e g   a path supplied to one of the path methods may contain matrix parameters or multiple path segments since the separators are legal characters and will not be encoded  Percent encoded values are also recognized where allowed and will not be double encoded

User · Answer

I think that the URI class is the one that you are looking for

User · Answer

Mmhh I know you ve already discarded URLEncoder  but despite of what the docs say  I decided to give it a try  You said   For example  given an input  http   google com resource key value I expect the output  http 3a 2f 2fgoogle com 2fresource 3fkey 3dvalue  So  C  oreyes samples java URL gt type URLEncodeSample java import java net     public class URLEncodeSample       public static void main  String    args   throws Throwable           System out println  URLEncoder encode  args 0    quot UTF-8 quot               C  oreyes samples java URL gt javac URLEncodeSample java  C  oreyes samples java URL gt java URLEncodeSample  quot http   google com resource key value quot  http 3A 2F 2Fgoogle com 2Fresource 3Fkey 3Dvalue  As expected  What would be the problem with this

User · Answer

I wrote my own  it s short  super simple  and you can copy it if you like  http   www dmurph com 2011 01 java-uri-encoder

User · Answer

It seems that CharEscapers from Google GData-java-client has what you want  It has uriPathEscaper method  uriQueryStringEscaper  and generic uriEscaper   All return Escaper object which does actual escaping   Apache License

User · Answer

Mmhh I know you ve already discarded URLEncoder  but despite of what the docs say  I decided to give it a try  You said   For example  given an input  http   google com resource key value I expect the output  http 3a 2f 2fgoogle com 2fresource 3fkey 3dvalue  So  C  oreyes samples java URL gt type URLEncodeSample java import java net     public class URLEncodeSample       public static void main  String    args   throws Throwable           System out println  URLEncoder encode  args 0    quot UTF-8 quot               C  oreyes samples java URL gt javac URLEncodeSample java  C  oreyes samples java URL gt java URLEncodeSample  quot http   google com resource key value quot  http 3A 2F 2Fgoogle com 2Fresource 3Fkey 3Dvalue  As expected  What would be the problem with this

[java] How do I encode URI parameter values?

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