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/* Android Asynchronous Http Client//from www .j a v a2 s. co m Copyright (c) 2011 James Smith <james@loopj.com> http://loopj.com 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. */ package com.loopj.android.http; import java.io.InputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.concurrent.ConcurrentHashMap; import org.apache.http.HttpEntity; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.utils.URLEncodedUtils; import org.apache.http.message.BasicNameValuePair; /** * A collection of string request parameters or files to send along with * requests made from an {@link AsyncHttpClient} instance. * <p> * For example: * <p> * <pre> * RequestParams params = new RequestParams(); * params.put("username", "james"); * params.put("password", "123456"); * params.put("email", "my@email.com"); * params.put("profile_picture", new File("pic.jpg")); // Upload a File * params.put("profile_picture2", someInputStream); // Upload an InputStream * params.put("profile_picture3", new ByteArrayInputStream(someBytes)); // Upload some bytes * * AsyncHttpClient client = new AsyncHttpClient(); * client.post("http://myendpoint.com", params, responseHandler); * </pre> */ public class RequestParams { private static String ENCODING = "UTF-8"; protected ConcurrentHashMap<String, String> urlParams; protected ConcurrentHashMap<String, FileWrapper> fileParams; protected ConcurrentHashMap<String, ArrayList<String>> urlParamsWithArray; /** * Constructs a new empty <code>RequestParams</code> instance. */ public RequestParams() { init(); } /** * Constructs a new RequestParams instance containing the key/value * string params from the specified map. * @param source the source key/value string map to add. */ public RequestParams(Map<String, String> source) { init(); for(Map.Entry<String, String> entry : source.entrySet()) { put(entry.getKey(), entry.getValue()); } } /** * Constructs a new RequestParams instance and populate it with a single * initial key/value string param. * @param key the key name for the intial param. * @param value the value string for the initial param. */ public RequestParams(String key, String value) { init(); put(key, value); } /** * Constructs a new RequestParams instance and populate it with multiple * initial key/value string param. * @param keysAndValues a sequence of keys and values. Objects are * automatically converted to Strings (including the value {@code null}). * @throws IllegalArgumentException if the number of arguments isn't even. */ public RequestParams(Object... keysAndValues) { init(); int len = keysAndValues.length; if (len % 2 != 0) throw new IllegalArgumentException("Supplied arguments must be even"); for (int i = 0; i < len; i += 2) { String key = String.valueOf(keysAndValues[i]); String val = String.valueOf(keysAndValues[i + 1]); put(key, val); } } /** * Adds a key/value string pair to the request. * @param key the key name for the new param. * @param value the value string for the new param. */ public void put(String key, String value){ if(key != null && value != null) { urlParams.put(key, value); } } /** * Adds a file to the request. * @param key the key name for the new param. * @param file the file to add. */ public void put(String key, File file) throws FileNotFoundException { put(key, new FileInputStream(file), file.getName()); } /** * Adds param with more than one value. * @param key the key name for the new param. * @param values is the ArrayList with values for the param. */ public void put(String key, ArrayList<String> values) { if(key != null && values != null) { urlParamsWithArray.put(key, values); } } /** * Adds value to param which can have more than one value. * @param key the key name for the param, either existing or new. * @param value the value string for the new param. */ public void add(String key, String value) { if(key != null && value != null) { ArrayList<String> paramArray = urlParamsWithArray.get(key); if (paramArray == null) { paramArray = new ArrayList<String>(); this.put(key, paramArray); } paramArray.add(value); } } /** * Adds an input stream to the request. * @param key the key name for the new param. * @param stream the input stream to add. */ public void put(String key, InputStream stream) { put(key, stream, null); } /** * Adds an input stream to the request. * @param key the key name for the new param. * @param stream the input stream to add. * @param fileName the name of the file. */ public void put(String key, InputStream stream, String fileName) { put(key, stream, fileName, null); } /** * Adds an input stream to the request. * @param key the key name for the new param. * @param stream the input stream to add. * @param fileName the name of the file. * @param contentType the content type of the file, eg. application/json */ public void put(String key, InputStream stream, String fileName, String contentType) { if(key != null && stream != null) { fileParams.put(key, new FileWrapper(stream, fileName, contentType)); } } /** * Removes a parameter from the request. * @param key the key name for the parameter to remove. */ public void remove(String key){ urlParams.remove(key); fileParams.remove(key); urlParamsWithArray.remove(key); } @Override public String toString() { StringBuilder result = new StringBuilder(); for(ConcurrentHashMap.Entry<String, String> entry : urlParams.entrySet()) { if(result.length() > 0) result.append("&"); result.append(entry.getKey()); result.append("="); result.append(entry.getValue()); } for(ConcurrentHashMap.Entry<String, FileWrapper> entry : fileParams.entrySet()) { if(result.length() > 0) result.append("&"); result.append(entry.getKey()); result.append("="); result.append("FILE"); } for(ConcurrentHashMap.Entry<String, ArrayList<String>> entry : urlParamsWithArray.entrySet()) { if(result.length() > 0) result.append("&"); ArrayList<String> values = entry.getValue(); for (int i = 0; i < values.size(); i++) { if (i != 0) result.append("&"); result.append(entry.getKey()); result.append("="); result.append(values.get(i)); } } return result.toString(); } /** * Returns an HttpEntity containing all request parameters */ public HttpEntity getEntity() { HttpEntity entity = null; if(!fileParams.isEmpty()) { SimpleMultipartEntity multipartEntity = new SimpleMultipartEntity(); // Add string params for(ConcurrentHashMap.Entry<String, String> entry : urlParams.entrySet()) { multipartEntity.addPart(entry.getKey(), entry.getValue()); } // Add dupe params for(ConcurrentHashMap.Entry<String, ArrayList<String>> entry : urlParamsWithArray.entrySet()) { ArrayList<String> values = entry.getValue(); for (String value : values) { multipartEntity.addPart(entry.getKey(), value); } } // Add file params int currentIndex = 0; int lastIndex = fileParams.entrySet().size() - 1; for(ConcurrentHashMap.Entry<String, FileWrapper> entry : fileParams.entrySet()) { FileWrapper file = entry.getValue(); if(file.inputStream != null) { boolean isLast = currentIndex == lastIndex; if(file.contentType != null) { multipartEntity.addPart(entry.getKey(), file.getFileName(), file.inputStream, file.contentType, isLast); } else { multipartEntity.addPart(entry.getKey(), file.getFileName(), file.inputStream, isLast); } } currentIndex++; } entity = multipartEntity; } else { try { entity = new UrlEncodedFormEntity(getParamsList(), ENCODING); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } return entity; } private void init(){ urlParams = new ConcurrentHashMap<String, String>(); fileParams = new ConcurrentHashMap<String, FileWrapper>(); urlParamsWithArray = new ConcurrentHashMap<String, ArrayList<String>>(); } protected List<BasicNameValuePair> getParamsList() { List<BasicNameValuePair> lparams = new LinkedList<BasicNameValuePair>(); for(ConcurrentHashMap.Entry<String, String> entry : urlParams.entrySet()) { lparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue())); } for(ConcurrentHashMap.Entry<String, ArrayList<String>> entry : urlParamsWithArray.entrySet()) { ArrayList<String> values = entry.getValue(); for (String value : values) { lparams.add(new BasicNameValuePair(entry.getKey(), value)); } } return lparams; } protected String getParamString() { return URLEncodedUtils.format(getParamsList(), ENCODING); } private static class FileWrapper { public InputStream inputStream; public String fileName; public String contentType; public FileWrapper(InputStream inputStream, String fileName, String contentType) { this.inputStream = inputStream; this.fileName = fileName; this.contentType = contentType; } public String getFileName() { if(fileName != null) { return fileName; } else { return "nofilename"; } } } }