Java tutorial
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THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * */ package org.chiba.xml.xforms.connector.http; import org.apache.commons.httpclient.*; import org.apache.commons.httpclient.cookie.CookiePolicy; import org.apache.commons.httpclient.methods.EntityEnclosingMethod; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.methods.PutMethod; import org.apache.log4j.Category; import org.chiba.xml.xforms.ChibaBean; import org.chiba.xml.xforms.XFormsConstants; import org.chiba.xml.xforms.connector.AbstractConnector; import org.chiba.xml.xforms.exception.XFormsException; import org.chiba.adapter.ChibaAdapter; import java.io.InputStream; import java.util.HashMap; import java.util.Map; /** * A simple base class for convenient HTTP connector interface implementation. * * @author <a href="mailto:unl@users.sourceforge.net">uli</a> * @version $Id: AbstractHTTPConnector.java,v 1.14 2004/12/01 13:14:34 unl Exp $ */ public class AbstractHTTPConnector extends AbstractConnector { private static Category cat = Category.getInstance(AbstractHTTPConnector.class); /** * The response body. */ private InputStream responseBody = null; /** * The response header. */ private Map responseHeader = null; /** * Returns the response body. * * @return the response body. */ protected InputStream getResponseBody() { return responseBody; } /** * Returns the response header. * * @return the response header. */ protected Map getResponseHeader() { return responseHeader; } private Map submissionMap = null; /** * allows to pass arbitrary params to an application by storing them in the submission map * * @param map */ protected void setSubmissionMap(Map map) { this.submissionMap = map; } /** * Performs a HTTP GET request. * * @param uri the request uri. * @throws XFormsException if any error occurred during the request. */ protected void get(String uri) throws XFormsException { try { HttpMethod httpMethod = new GetMethod(uri); httpMethod.setRequestHeader(new Header("User-Agent", ChibaBean.getAppInfo())); execute(httpMethod); } catch (Exception e) { throw new XFormsException(e); } } /** * Performs a HTTP POST request. * <p/> * The content type is <code>application/xml</code>. * * @param uri the request uri. * @param body the request body. * @throws XFormsException if any error occurred during the request. */ protected void post(String uri, String body) throws XFormsException { post(uri, body, "application/xml"); } /** * Performs a HTTP POST request. * * @param uri the request uri. * @param body the request body. * @param type the content type. * @throws XFormsException if any error occurred during the request. */ protected void post(String uri, String body, String type) throws XFormsException { try { EntityEnclosingMethod httpMethod = new PostMethod(uri); httpMethod.setRequestBody(body); httpMethod.setRequestHeader(new Header("Content-Type", type)); httpMethod.setRequestHeader(new Header("Content-Length", String.valueOf(body.length()))); httpMethod.setRequestHeader(new Header("User-Agent", ChibaBean.getAppInfo())); execute(httpMethod); } catch (Exception e) { throw new XFormsException(e); } } /** * Performs a HTTP PUT request. * <p/> * The content type is <code>application/xml</code>. * * @param uri the request uri. * @param body the request body. * @throws XFormsException if any error occurred during the request. */ protected void put(String uri, String body) throws XFormsException { put(uri, body, "application/xml"); } /** * Performs a HTTP PUT request. * * @param uri the request uri. * @param body the request body. * @param type the content type. * @throws XFormsException if any error occurred during the request. */ protected void put(String uri, String body, String type) throws XFormsException { try { EntityEnclosingMethod httpMethod = new PutMethod(uri); httpMethod.setRequestBody(body); httpMethod.setRequestHeader(new Header("Content-Type", type)); httpMethod.setRequestHeader(new Header("Content-Length", String.valueOf(body.length()))); httpMethod.setRequestHeader(new Header("User-Agent", ChibaBean.getAppInfo())); execute(httpMethod); } catch (Exception e) { throw new XFormsException(e); } } protected void execute(HttpMethod httpMethod) throws Exception { // (new HttpClient()).executeMethod(httpMethod); HttpClient client = new HttpClient(); if (submissionMap != null) { String sessionid = submissionMap.get(ChibaAdapter.SESSION_ID).toString(); if (sessionid != null) { HttpState state = client.getState(); state.setCookiePolicy(CookiePolicy.COMPATIBILITY); state.addCookie(new Cookie(httpMethod.getURI().getHost(), "JSESSIONID", sessionid, httpMethod.getPath(), null, false)); client.setState(state); } } client.executeMethod(httpMethod); if (httpMethod.getStatusCode() >= 300) { throw new XFormsException( "HTTP status " + httpMethod.getStatusCode() + ": " + httpMethod.getStatusText()); } this.handleHttpMethod(httpMethod); } protected void handleHttpMethod(HttpMethod httpMethod) throws Exception { Header[] headers = httpMethod.getResponseHeaders(); this.responseHeader = new HashMap(); for (int index = 0; index < headers.length; index++) { responseHeader.put(headers[index].getName(), headers[index].getValue()); } this.responseBody = httpMethod.getResponseBodyAsStream(); } } //end of class