org.apache.camel.component.http.helper
Class HttpHelper

java.lang.Object
  org.apache.camel.component.http.helper.HttpHelper

public final class HttpHelper
extends Object

Method Summary

static void	appendHeader(Map<String,Object> headers, String key, Object value) Appends the key/value to the headers.
static HttpMethods	createMethod(org.apache.camel.Exchange exchange, HttpEndpoint endpoint, boolean hasPayload) Creates the HttpMethod to use to call the remote server, often either its GET or POST.
static URI	createURI(org.apache.camel.Exchange exchange, String url, HttpEndpoint endpoint) Creates the URI to invoke.
static String	createURL(org.apache.camel.Exchange exchange, HttpEndpoint endpoint) Creates the URL to invoke.
static Object	deserializeJavaObjectFromStream(InputStream is) Deserializes the input stream to a Java object
static Object	extractHttpParameterValue(String value) Extracts the parameter value.
static String	getCharsetFromContentType(String contentType)
static Object	readResponseBodyFromInputStream(InputStream is, org.apache.camel.Exchange exchange) Reads the response body from the given input stream.
static Object	readResponseBodyFromServletRequest(javax.servlet.http.HttpServletRequest request, org.apache.camel.Exchange exchange) Reads the response body from the given http servlet request.
static void	setCharsetFromContentType(String contentType, org.apache.camel.Exchange exchange)
static String	urlRewrite(org.apache.camel.Exchange exchange, String url, HttpEndpoint endpoint, org.apache.camel.Producer producer) Processes any custom UrlRewrite.
static void	writeObjectToServletResponse(javax.servlet.ServletResponse response, Object target) Writes the given object as response body to the servlet response The content type will be set to HttpConstants.CONTENT_TYPE_JAVA_SERIALIZED_OBJECT
static void	writeObjectToStream(OutputStream stream, Object target) Writes the given object as response body to the output stream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

setCharsetFromContentType

public static void setCharsetFromContentType(String contentType,
                                             org.apache.camel.Exchange exchange)

getCharsetFromContentType

public static String getCharsetFromContentType(String contentType)

writeObjectToServletResponse

public static void writeObjectToServletResponse(javax.servlet.ServletResponse response,
                                                Object target)
                                         throws IOException

Writes the given object as response body to the servlet response

The content type will be set to HttpConstants.CONTENT_TYPE_JAVA_SERIALIZED_OBJECT

Parameters:

response - servlet response

target - object to write

Throws:

IOException - is thrown if error writing

writeObjectToStream

public static void writeObjectToStream(OutputStream stream,
                                       Object target)
                                throws IOException

Writes the given object as response body to the output stream

Parameters:

stream - output stream

target - object to write

Throws:

IOException - is thrown if error writing

deserializeJavaObjectFromStream

public static Object deserializeJavaObjectFromStream(InputStream is)
                                              throws ClassNotFoundException,
                                                     IOException

Deserializes the input stream to a Java object

Parameters:

is - input stream for the Java object

Returns:

the java object, or null if input stream was null

Throws:

ClassNotFoundException - is thrown if class not found

IOException - can be thrown

readResponseBodyFromServletRequest

public static Object readResponseBodyFromServletRequest(javax.servlet.http.HttpServletRequest request,
                                                        org.apache.camel.Exchange exchange)
                                                 throws IOException

Reads the response body from the given http servlet request.

Parameters:

request - http servlet request

exchange - the exchange

Returns:

the response body, can be null if no body

Throws:

IOException - is thrown if error reading response body

readResponseBodyFromInputStream

public static Object readResponseBodyFromInputStream(InputStream is,
                                                     org.apache.camel.Exchange exchange)
                                              throws IOException

Reads the response body from the given input stream.

Parameters:

is - the input stream

exchange - the exchange

Returns:

the response body, can be null if no body

Throws:

IOException - is thrown if error reading response body

createURL

public static String createURL(org.apache.camel.Exchange exchange,
                               HttpEndpoint endpoint)

Creates the URL to invoke.

Parameters:

exchange - the exchange

endpoint - the endpoint

Returns:

the URL to invoke

createURI

public static URI createURI(org.apache.camel.Exchange exchange,
                            String url,
                            HttpEndpoint endpoint)
                     throws URISyntaxException

Creates the URI to invoke.

Parameters:

exchange - the exchange

url - the url to invoke

endpoint - the endpoint

Returns:

the URI to invoke

Throws:

URISyntaxException

createMethod

public static HttpMethods createMethod(org.apache.camel.Exchange exchange,
                                       HttpEndpoint endpoint,
                                       boolean hasPayload)
                                throws URISyntaxException

Creates the HttpMethod to use to call the remote server, often either its GET or POST.

Parameters:

exchange - the exchange

Returns:

the created method

Throws:

URISyntaxException

appendHeader

public static void appendHeader(Map<String,Object> headers,
                                String key,
                                Object value)

Appends the key/value to the headers.

This implementation supports keys with multiple values. In such situations the value will be a List that contains the multiple values.

Parameters:

headers - headers

key - the key

value - the value

extractHttpParameterValue

public static Object extractHttpParameterValue(String value)

Extracts the parameter value.

This implementation supports HTTP multi value parameters which is based on the syntax of [value1, value2, value3] by returning a List containing the values.

If the value is not a HTTP mulit value the value is returned as is.

Parameters:

value - the parameter value

Returns:

the extracted parameter value, see more details in javadoc.

urlRewrite

public static String urlRewrite(org.apache.camel.Exchange exchange,
                                String url,
                                HttpEndpoint endpoint,
                                org.apache.camel.Producer producer)
                         throws Exception

Processes any custom UrlRewrite.

Parameters:

exchange - the exchange

url - the url

endpoint - the http endpoint

producer - the producer

Returns:

the rewritten url, or null to use original url

Throws:

Exception - is thrown if any error during rewriting url