org.apache.commons.httpclient.methods
Class PostMethod

java.lang.Object
  extended by org.apache.commons.httpclient.HttpMethodBase
      extended by org.apache.commons.httpclient.methods.ExpectContinueMethod
          extended by org.apache.commons.httpclient.methods.EntityEnclosingMethod
              extended by org.apache.commons.httpclient.methods.PostMethod
All Implemented Interfaces:
HttpMethod

public class PostMethod
extends EntityEnclosingMethod

Implements the HTTP POST method.

The HTTP POST method is defined in section 9.5 of RFC2616:

The POST method is used to request that the origin server accept the entity enclosed in the request as a new subordinate of the resource identified by the Request-URI in the Request-Line. POST is designed to allow a uniform method to cover the following functions:

Since:
1.0
Version:
$Revision: 1425331 $
Author:
Remy Maucherat, Doug Sale, Jeff Dever, Ortwin Gl???ck, Mike Bowler, Oleg Kalnichevski

Field Summary
static String FORM_URL_ENCODED_CONTENT_TYPE
          The Content-Type for www-form-urlencoded.
 
Fields inherited from class org.apache.commons.httpclient.methods.EntityEnclosingMethod
CONTENT_LENGTH_AUTO, CONTENT_LENGTH_CHUNKED
 
Fields inherited from class org.apache.commons.httpclient.HttpMethodBase
effectiveVersion, statusLine
 
Constructor Summary
PostMethod()
          No-arg constructor.
PostMethod(String uri)
          Constructor specifying a URI.
 
Method Summary
 void addParameter(NameValuePair param)
          Adds a new parameter to be used in the POST request body.
 void addParameter(String paramName, String paramValue)
          Adds a new parameter to be used in the POST request body.
 void addParameters(NameValuePair[] parameters)
          Adds an array of parameters to be used in the POST request body.
protected  void clearRequestBody()
          Clears request body.
protected  RequestEntity generateRequestEntity()
          Generates a request entity from the post parameters, if present.
 String getName()
          Returns "POST".
 NameValuePair getParameter(String paramName)
          Gets the parameter of the specified name.
 NameValuePair[] getParameters()
          Gets the parameters currently added to the PostMethod.
protected  boolean hasRequestContent()
          Returns true if there is a request body to be sent.
 boolean removeParameter(String paramName)
          Removes all parameters with the given paramName.
 boolean removeParameter(String paramName, String paramValue)
          Removes all parameter with the given paramName and paramValue.
 void setParameter(String parameterName, String parameterValue)
          Sets the value of parameter with parameterName to parameterValue.
 void setRequestBody(NameValuePair[] parametersBody)
          Sets an array of parameters to be used in the POST request body
 
Methods inherited from class org.apache.commons.httpclient.methods.EntityEnclosingMethod
addContentLengthRequestHeader, addRequestHeaders, generateRequestBody, getFollowRedirects, getRequestCharSet, getRequestContentLength, getRequestEntity, recycle, setContentChunked, setFollowRedirects, setRequestBody, setRequestBody, setRequestContentLength, setRequestContentLength, setRequestEntity, writeRequestBody
 
Methods inherited from class org.apache.commons.httpclient.methods.ExpectContinueMethod
getUseExpectHeader, setUseExpectHeader
 
Methods inherited from class org.apache.commons.httpclient.HttpMethodBase
abort, addCookieRequestHeader, addHostRequestHeader, addProxyConnectionHeader, addRequestHeader, addRequestHeader, addResponseFooter, addUserAgentRequestHeader, checkNotUsed, checkUsed, execute, generateRequestLine, getAuthenticationRealm, getContentCharSet, getDoAuthentication, getEffectiveVersion, getHostAuthState, getHostConfiguration, getMethodRetryHandler, getParams, getPath, getProxyAuthenticationRealm, getProxyAuthState, getQueryString, getRecoverableExceptionCount, getRequestHeader, getRequestHeaderGroup, getRequestHeaders, getRequestHeaders, getResponseBody, getResponseBody, getResponseBodyAsStream, getResponseBodyAsString, getResponseBodyAsString, getResponseCharSet, getResponseContentLength, getResponseFooter, getResponseFooters, getResponseHeader, getResponseHeaderGroup, getResponseHeaders, getResponseHeaders, getResponseStream, getResponseTrailerHeaderGroup, getStatusCode, getStatusLine, getStatusText, getURI, hasBeenUsed, isAborted, isConnectionCloseForced, isHttp11, isRequestSent, isStrictMode, processCookieHeaders, processResponseBody, processResponseHeaders, processStatusLine, readResponse, readResponseBody, readResponseHeaders, readStatusLine, releaseConnection, removeRequestHeader, removeRequestHeader, responseBodyConsumed, setConnectionCloseForced, setDoAuthentication, setHostConfiguration, setHttp11, setMethodRetryHandler, setParams, setPath, setQueryString, setQueryString, setRequestHeader, setRequestHeader, setResponseStream, setStrictMode, setURI, shouldCloseConnection, validate, writeRequest, writeRequestHeaders, writeRequestLine
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

FORM_URL_ENCODED_CONTENT_TYPE

public static final String FORM_URL_ENCODED_CONTENT_TYPE
The Content-Type for www-form-urlencoded.

See Also:
Constant Field Values
Constructor Detail

PostMethod

public PostMethod()
No-arg constructor.

Since:
1.0

PostMethod

public PostMethod(String uri)
Constructor specifying a URI.

Parameters:
uri - either an absolute or relative URI
Since:
1.0
Method Detail

getName

public String getName()
Returns "POST".

Specified by:
getName in interface HttpMethod
Specified by:
getName in class HttpMethodBase
Returns:
"POST"
Since:
2.0

hasRequestContent

protected boolean hasRequestContent()
Returns true if there is a request body to be sent.

This method must be overwritten by sub-classes that implement alternative request content input methods

Overrides:
hasRequestContent in class EntityEnclosingMethod
Returns:
boolean
Since:
2.0beta1

clearRequestBody

protected void clearRequestBody()
Clears request body.

This method must be overwritten by sub-classes that implement alternative request content input methods

Overrides:
clearRequestBody in class EntityEnclosingMethod
Since:
2.0beta1

generateRequestEntity

protected RequestEntity generateRequestEntity()
Generates a request entity from the post parameters, if present. Calls EntityEnclosingMethod.generateRequestBody() if parameters have not been set.

Overrides:
generateRequestEntity in class EntityEnclosingMethod
Since:
3.0

setParameter

public void setParameter(String parameterName,
                         String parameterValue)
Sets the value of parameter with parameterName to parameterValue. This method does not preserve the initial insertion order.

Parameters:
parameterName - name of the parameter
parameterValue - value of the parameter
Since:
2.0

getParameter

public NameValuePair getParameter(String paramName)
Gets the parameter of the specified name. If there exists more than one parameter with the name paramName, then only the first one is returned.

Parameters:
paramName - name of the parameter
Returns:
If a parameter exists with the name argument, the coresponding NameValuePair is returned. Otherwise null.
Since:
2.0

getParameters

public NameValuePair[] getParameters()
Gets the parameters currently added to the PostMethod. If there are no parameters, a valid array is returned with zero elements. The returned array object contains an array of pointers to the internal data members.

Returns:
An array of the current parameters
Since:
2.0

addParameter

public void addParameter(String paramName,
                         String paramValue)
                  throws IllegalArgumentException
Adds a new parameter to be used in the POST request body.

Parameters:
paramName - The parameter name to add.
paramValue - The parameter value to add.
Throws:
IllegalArgumentException - if either argument is null
Since:
1.0

addParameter

public void addParameter(NameValuePair param)
                  throws IllegalArgumentException
Adds a new parameter to be used in the POST request body.

Parameters:
param - The parameter to add.
Throws:
IllegalArgumentException - if the argument is null or contains null values
Since:
2.0

addParameters

public void addParameters(NameValuePair[] parameters)
Adds an array of parameters to be used in the POST request body. Logs a warning if the parameters argument is null.

Parameters:
parameters - The array of parameters to add.
Since:
2.0

removeParameter

public boolean removeParameter(String paramName)
                        throws IllegalArgumentException
Removes all parameters with the given paramName. If there is more than one parameter with the given paramName, all of them are removed. If there is just one, it is removed. If there are none, then the request is ignored.

Parameters:
paramName - The parameter name to remove.
Returns:
true if at least one parameter was removed
Throws:
IllegalArgumentException - When the parameter name passed is null
Since:
2.0

removeParameter

public boolean removeParameter(String paramName,
                               String paramValue)
                        throws IllegalArgumentException
Removes all parameter with the given paramName and paramValue. If there is more than one parameter with the given paramName, only one is removed. If there are none, then the request is ignored.

Parameters:
paramName - The parameter name to remove.
paramValue - The parameter value to remove.
Returns:
true if a parameter was removed.
Throws:
IllegalArgumentException - when param name or value are null
Since:
2.0

setRequestBody

public void setRequestBody(NameValuePair[] parametersBody)
                    throws IllegalArgumentException
Sets an array of parameters to be used in the POST request body

Parameters:
parametersBody - The array of parameters to add.
Throws:
IllegalArgumentException - when param parameters are null
Since:
2.0beta1


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