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A builder-style HTTP client API, including authentication, and extensible
handling of common content-types such as JSON and XML. It is built on top of
Apache's HttpClient.
/*
* Copyright 2008-2011 Thomas Nichols. http://blog.thomnichols.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* You are receiving this code free of charge, which represents many hours of
* effort from other individuals and corporations. As a responsible member
* of the community, you are encouraged (but not required) to donate any
* enhancements or improvements back to the community under a similar open
* source license. Thank you. -TMN
*/
package groovyx.net.http;
import java.util.Iterator;
import java.util.Locale;
import org.apache.http.Header;
import org.apache.http.HeaderIterator;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.ProtocolVersion;
import org.apache.http.StatusLine;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpContext;
/**
* This class is a wrapper for {@link HttpResponse}, which allows for
* simplified header access, as well as carrying the auto-parsed response data.
* (see {@link HTTPBuilder#parseResponse(HttpResponse, Object)}).
*
* @see HeadersDecorator
* @author Tom Nichols
* @since 0.5.0
*/
public class HttpResponseDecorator implements HttpResponse {
HeadersDecorator headers = null;
HttpResponse responseBase;
HttpContextDecorator context;
Object responseData;
public HttpResponseDecorator( HttpResponse base, Object parsedResponse ) {
this( base, null, parsedResponse );
}
public HttpResponseDecorator( HttpResponse base, HttpContextDecorator context, Object parsedResponse ) {
this.responseBase = base;
this.context = context;
this.responseData = parsedResponse;
}
/**
* Return a {@link HeadersDecorator}, which provides a more Groovy API for
* accessing response headers.
* @return the headers for this response
*/
public HeadersDecorator getHeaders() {
if ( headers == null ) headers = new HeadersDecorator();
return headers;
}
/**
* Quickly determine if the request resulted in an error code.
* @return true if the response code is within the range of
* {@link Status#SUCCESS}
*/
public boolean isSuccess() {
return Status.find( getStatus() ) == Status.SUCCESS;
}
/**
* Get the response status code.
* @see StatusLine#getStatusCode()
* @return the HTTP response code.
*/
public int getStatus() {
return responseBase.getStatusLine().getStatusCode();
}
/**
* Get the content-type for this response.
* @see ParserRegistry#getContentType(HttpResponse)
* @return the content-type string, without any charset information.
*/
public String getContentType() {
return ParserRegistry.getContentType( responseBase );
}
/**
* Return the parsed data from this response body.
* @return the parsed response object, or null if the response
* does not contain any data.
*/
public Object getData() { return this.responseData; }
void setData( Object responseData ) { this.responseData = responseData; }
/**
* Get the execution context used during this request
* @see ExecutionContext
* @return the {@link HttpContext}
*/
public HttpContextDecorator getContext() { return this.context; }
/**
* This class is returned by {@link HttpResponseDecorator#getHeaders()}.
* It provides three "Groovy" ways to access headers:
*
* - Bracket notation
resp.headers['Content-Type']
* returns the {@link Header} instance- Property notation
resp.headers.'Content-Type'
* returns the {@link Header#getValue() header value}- Iterator methods
- Iterates over each Header:
*
resp.headers.each {
* println "${it.name} : ${it.value}"
* }
*
* @author Tom Nichols
* @since 0.5.0
*/
public final class HeadersDecorator implements Iterable {
/**
* Access the named header value, using bracket form. For example,
* response.headers['Content-Encoding']
* @see HttpResponse#getFirstHeader(String)
* @param name header name, e.g. Content-Type
* @return the {@link Header}, or null if it does not exist
* in this response
*/
public Header getAt( String name ) {
return responseBase.getFirstHeader( name );
}
/**
* Allow property-style access to header values. This is the same as
* {@link #getAt(String)}, except it simply returns the header's String
* value, instead of the Header object.
*
* @param name header name, e.g. Content-Type
* @return the {@link Header}, or null if it does not exist
* in this response
*/
protected String propertyMissing( String name ) {
Header h = this.getAt( name );
return h != null ? h.getValue() : null;
}
/**
* Used to allow Groovy iteration methods over the response headers.
* For example:
* response.headers.each {
* println "${it.name} : ${it.value}"
* }
*/
@SuppressWarnings("unchecked")
public Iterator iterator() {
return responseBase.headerIterator();
}
}
public HttpEntity getEntity() {
return responseBase.getEntity();
}
public Locale getLocale() {
return responseBase.getLocale();
}
public StatusLine getStatusLine() {
return responseBase.getStatusLine();
}
public void setEntity( HttpEntity arg0 ) {
responseBase.setEntity( arg0 );
}
public void setLocale( Locale arg0 ) {
responseBase.setLocale( arg0 );
}
public void setReasonPhrase( String arg0 ) throws IllegalStateException {
responseBase.setReasonPhrase( arg0 );
}
public void setStatusCode( int arg0 ) throws IllegalStateException {
responseBase.setStatusCode( arg0 );
}
public void setStatusLine( StatusLine arg0 ) {
responseBase.setStatusLine( arg0 );
}
public void setStatusLine( ProtocolVersion arg0, int arg1 ) {
responseBase.setStatusLine( arg0, arg1 );
}
public void setStatusLine( ProtocolVersion arg0, int arg1, String arg2 ) {
responseBase.setStatusLine( arg0, arg1, arg2 );
}
public void addHeader( Header arg0 ) {
responseBase.addHeader( arg0 );
}
public void addHeader( String arg0, String arg1 ) {
responseBase.addHeader( arg0, arg1 );
}
public boolean containsHeader( String arg0 ) {
return responseBase.containsHeader( arg0 );
}
public Header[] getAllHeaders() {
return responseBase.getAllHeaders();
}
public Header getFirstHeader( String arg0 ) {
return responseBase.getFirstHeader( arg0 );
}
public Header[] getHeaders( String arg0 ) {
return responseBase.getHeaders( arg0 );
}
public Header getLastHeader( String arg0 ) {
return responseBase.getLastHeader( arg0 );
}
public HttpParams getParams() {
return responseBase.getParams();
}
public ProtocolVersion getProtocolVersion() {
return responseBase.getProtocolVersion();
}
public HeaderIterator headerIterator() {
return responseBase.headerIterator();
}
public HeaderIterator headerIterator( String arg0 ) {
return responseBase.headerIterator( arg0 );
}
public void removeHeader( Header arg0 ) {
responseBase.removeHeader( arg0 );
}
public void removeHeaders( String arg0 ) {
responseBase.removeHeaders( arg0 );
}
public void setHeader( Header arg0 ) {
responseBase.setHeader( arg0 );
}
public void setHeader( String arg0, String arg1 ) {
responseBase.setHeader( arg0, arg1 );
}
public void setHeaders( Header[] arg0 ) {
responseBase.setHeaders( arg0 );
}
public void setParams( HttpParams arg0 ) {
responseBase.setParams( arg0 );
}
}