Source Code Cross Referenced for MultipartFormDataFormatter.java in  » Web-Services-AXIS2 » kernal » org » apache » axis2 » transport » http » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Services AXIS2 » kernal » org.apache.axis2.transport.http 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one
003:         * or more contributor license agreements. See the NOTICE file
004:         * distributed with this work for additional information
005:         * regarding copyright ownership. The ASF licenses this file
006:         * to you under the Apache License, Version 2.0 (the
007:         * "License"); you may not use this file except in compliance
008:         * with the License. You may obtain a copy of the License at
009:         *
010:         * http://www.apache.org/licenses/LICENSE-2.0
011:         *
012:         * Unless required by applicable law or agreed to in writing,
013:         * software distributed under the License is distributed on an
014:         * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015:         * KIND, either express or implied. See the License for the
016:         * specific language governing permissions and limitations
017:         * under the License.
018:         */
019:
020:        package org.apache.axis2.transport.http;
021:
022:        import org.apache.axiom.om.OMAbstractFactory;
023:        import org.apache.axiom.om.OMElement;
024:        import org.apache.axiom.om.OMFactory;
025:        import org.apache.axiom.om.OMOutputFormat;
026:        import org.apache.axis2.AxisFault;
027:        import org.apache.axis2.context.MessageContext;
028:        import org.apache.axis2.transport.MessageFormatter;
029:        import org.apache.axis2.transport.http.util.ComplexPart;
030:        import org.apache.axis2.transport.http.util.URLTemplatingUtil;
031:        import org.apache.commons.httpclient.methods.multipart.Part;
032:        import org.apache.commons.httpclient.methods.multipart.StringPart;
033:
034:        import java.io.ByteArrayOutputStream;
035:        import java.io.IOException;
036:        import java.io.OutputStream;
037:        import java.net.URL;
038:        import java.util.ArrayList;
039:        import java.util.Iterator;
040:
041:        /**
042:         * Formates the request message as multipart/form-data. An example of this serialization is shown
043:         * below which was extracted from the Web Services Description Language (WSDL) Version 2.0 Part 2: Adjuncts
044:         * <p/>
045:         * The following instance data of an input message:
046:         * <p/>
047:         * <data>
048:         * <town>
049:         * <name>Fréjus</name>
050:         * <country>France</country>
051:         * </town>
052:         * <date>@@@@-@@-@@</date>
053:         * </data>
054:         * <p/>
055:         * with the following operation element
056:         * <p/>
057:         * <operation ref='t:data'
058:         * whttp:location='temperature'
059:         * whttp:method='POST'
060:         * whttp:inputSerialization='multipart/form-data'/>
061:         * <p/>
062:         * will serialize the message as follow:
063:         * <p/>
064:         * Content-Type: multipart/form-data; boundary=AaB03x
065:         * Content-Length: xxx
066:         * <p/>
067:         * --AaB03x
068:         * Content-Disposition: form-data; name="town"
069:         * Content-Type: application/xml
070:         * <p/>
071:         * <town>
072:         * <name>Fréjus</name>
073:         * <country>France</country>
074:         * </town>
075:         * --AaB03x
076:         * Content-Disposition: form-data; name="date"
077:         * Content-Type: text/plain; charset=utf-8
078:         *
079:         * @@@@-@@-@@ --AaB03x--
080:         */
081:        public class MultipartFormDataFormatter implements  MessageFormatter {
082:
083:            /**
084:             * @return a byte array of the message formatted according to the given
085:             *         message format.
086:             */
087:            public byte[] getBytes(MessageContext messageContext,
088:                    OMOutputFormat format) throws AxisFault {
089:
090:                OMElement omElement = messageContext.getEnvelope().getBody()
091:                        .getFirstElement();
092:
093:                Part[] parts = createMultipatFormDataRequest(omElement);
094:                if (parts.length > 0) {
095:                    ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
096:                    try {
097:
098:                        // This is accessing a class of Commons-FlieUpload
099:                        Part.sendParts(bytesOut, parts, format
100:                                .getMimeBoundary().getBytes());
101:                    } catch (IOException e) {
102:                        throw AxisFault.makeFault(e);
103:                    }
104:                    return bytesOut.toByteArray();
105:                }
106:
107:                return new byte[0]; //To change body of implemented methods use File | Settings | File Templates.
108:            }
109:
110:            /**
111:             * To support deffered writing transports as in http chunking.. Axis2 was
112:             * doing this for some time..
113:             * <p/>
114:             * Preserve flag can be used to preserve the envelope for later use. This is
115:             * usefull when implementing authentication machnisms like NTLM.
116:             *
117:             * @param outputStream
118:             * @param preserve     :
119:             *                     do not consume the OM when this is set..
120:             */
121:            public void writeTo(MessageContext messageContext,
122:                    OMOutputFormat format, OutputStream outputStream,
123:                    boolean preserve) throws AxisFault {
124:
125:                try {
126:                    byte[] b = getBytes(messageContext, format);
127:
128:                    if (b != null && b.length > 0) {
129:                        outputStream.write(b);
130:                    } else {
131:                        outputStream.flush();
132:                    }
133:                } catch (IOException e) {
134:                    throw new AxisFault(
135:                            "An error occured while writing the request");
136:                }
137:            }
138:
139:            /**
140:             * Different message formats can set their own content types
141:             * Eg: JSONFormatter can set the content type as application/json
142:             *
143:             * @param messageContext
144:             * @param format
145:             * @param soapAction
146:             */
147:            public String getContentType(MessageContext messageContext,
148:                    OMOutputFormat format, String soapAction) {
149:
150:                String contentType = HTTPConstants.MEDIA_TYPE_MULTIPART_FORM_DATA;
151:                String encoding = format.getCharSetEncoding();
152:                if (encoding != null) {
153:                    contentType += "; charset=" + encoding;
154:                }
155:                contentType = contentType + "; " + "boundary="
156:                        + format.getMimeBoundary();
157:                return contentType;
158:            }
159:
160:            /**
161:             * Some message formats may want to alter the target url.
162:             *
163:             * @return the target URL
164:             */
165:            public URL getTargetAddress(MessageContext messageContext,
166:                    OMOutputFormat format, URL targetURL) throws AxisFault {
167:                // Check whether there is a template in the URL, if so we have to replace then with data
168:                // values and create a new target URL.
169:                targetURL = URLTemplatingUtil.getTemplatedURL(targetURL,
170:                        messageContext, false);
171:
172:                return targetURL;
173:            }
174:
175:            /**
176:             * @return this only if you want set a transport header for SOAP Action
177:             */
178:            public String formatSOAPAction(MessageContext messageContext,
179:                    OMOutputFormat format, String soapAction) {
180:                return soapAction;
181:            }
182:
183:            /**
184:             * @param dataOut
185:             * @return
186:             */
187:            private Part[] createMultipatFormDataRequest(OMElement dataOut) {
188:                ArrayList parts = new ArrayList();
189:                if (dataOut != null) {
190:                    Iterator iter1 = dataOut.getChildElements();
191:                    OMFactory omFactory = OMAbstractFactory.getOMFactory();
192:                    while (iter1.hasNext()) {
193:                        OMElement ele = (OMElement) iter1.next();
194:                        Iterator iter2 = ele.getChildElements();
195:                        // check whether the element is a complex type
196:                        if (iter2.hasNext()) {
197:                            OMElement omElement = omFactory.createOMElement(ele
198:                                    .getQName().getLocalPart(), null);
199:                            omElement.addChild(processComplexType(omElement,
200:                                    ele.getChildElements(), omFactory));
201:                            parts.add(new ComplexPart(ele.getQName()
202:                                    .getLocalPart(), omElement.toString()));
203:                        } else {
204:                            parts.add(new StringPart(ele.getQName()
205:                                    .getLocalPart(), ele.getText()));
206:                        }
207:                    }
208:                }
209:                Part[] partsArray = new Part[parts.size()];
210:                return (Part[]) parts.toArray(partsArray);
211:            }
212:
213:            /**
214:             * @param parent
215:             * @param iter
216:             * @param omFactory
217:             * @return
218:             */
219:            private OMElement processComplexType(OMElement parent,
220:                    Iterator iter, OMFactory omFactory) {
221:
222:                OMElement omElement = null;
223:                while (iter.hasNext()) {
224:                    OMElement ele = (OMElement) iter.next();
225:                    omElement = omFactory.createOMElement(ele.getQName()
226:                            .getLocalPart(), null);
227:                    Iterator iter2 = ele.getChildElements();
228:                    if (iter2.hasNext()) {
229:                        parent.addChild(processComplexType(omElement, ele
230:                                .getChildElements(), omFactory));
231:                    } else {
232:                        omElement = omFactory.createOMElement(ele.getQName()
233:                                .getLocalPart(), null);
234:                        omElement.setText(ele.getText());
235:                        parent.addChild(omElement);
236:                    }
237:                }
238:                return omElement;
239:            }
240:        }
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