Java tutorial
package org.apache.maven.wagon.providers.webdav; /* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. */ import org.apache.commons.httpclient.Header; import org.apache.commons.httpclient.params.HttpMethodParams; import java.util.ArrayList; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.regex.Matcher; import java.util.regex.Pattern; public class HttpMethodConfiguration { public static final int DEFAULT_CONNECTION_TIMEOUT = 60000; private static final String COERCE_PATTERN = "%(\\w+),(.+)"; private Boolean useDefaultHeaders; private Properties headers = new Properties(); private Properties params = new Properties(); private int connectionTimeout = DEFAULT_CONNECTION_TIMEOUT; public boolean isUseDefaultHeaders() { return useDefaultHeaders == null ? true : useDefaultHeaders.booleanValue(); } public HttpMethodConfiguration setUseDefaultHeaders(boolean useDefaultHeaders) { this.useDefaultHeaders = Boolean.valueOf(useDefaultHeaders); return this; } public Boolean getUseDefaultHeaders() { return useDefaultHeaders; } public HttpMethodConfiguration addHeader(String header, String value) { headers.setProperty(header, value); return this; } public Properties getHeaders() { return headers; } public HttpMethodConfiguration setHeaders(Properties headers) { this.headers = headers; return this; } public HttpMethodConfiguration addParam(String param, String value) { params.setProperty(param, value); return this; } public Properties getParams() { return params; } public HttpMethodConfiguration setParams(Properties params) { this.params = params; return this; } public int getConnectionTimeout() { return connectionTimeout; } public HttpMethodConfiguration setConnectionTimeout(int connectionTimeout) { this.connectionTimeout = connectionTimeout; return this; } public HttpMethodParams asMethodParams(HttpMethodParams defaults) { if (!hasParams()) { return null; } HttpMethodParams p = new HttpMethodParams(); p.setDefaults(defaults); fillParams(p); return p; } private boolean hasParams() { if (connectionTimeout < 1 && params == null) { return false; } return true; } private void fillParams(HttpMethodParams p) { if (!hasParams()) { return; } if (connectionTimeout > 0) { p.setSoTimeout(connectionTimeout); } if (params != null) { Pattern coercePattern = Pattern.compile(COERCE_PATTERN); for (Map.Entry<Object, Object> entry : params.entrySet()) { String key = (String) entry.getKey(); String value = (String) entry.getValue(); Matcher matcher = coercePattern.matcher(value); if (matcher.matches()) { char type = matcher.group(1).charAt(0); value = matcher.group(2); switch (type) { case 'i': { p.setIntParameter(key, Integer.parseInt(value)); break; } case 'd': { p.setDoubleParameter(key, Double.parseDouble(value)); break; } case 'l': { p.setLongParameter(key, Long.parseLong(value)); break; } case 'b': { p.setBooleanParameter(key, Boolean.valueOf(value).booleanValue()); break; } case 'c': { String[] entries = value.split(","); List<String> collection = new ArrayList<String>(); for (String e : entries) { collection.add(e.trim()); } p.setParameter(key, collection); break; } case 'm': { String[] entries = value.split(","); Map<String, String> map = new LinkedHashMap<String, String>(); for (String e : entries) { int idx = e.indexOf("=>"); if (idx < 1) { break; } String mapKey = e.substring(0, idx); String mapVal = e.substring(idx + 1, e.length()); map.put(mapKey.trim(), mapVal.trim()); } p.setParameter(key, map); break; } } } else { p.setParameter(key, value); } } } } public Header[] asRequestHeaders() { if (headers == null) { return new Header[0]; } Header[] result = new Header[headers.size()]; int index = 0; for (Map.Entry<Object, Object> entry : headers.entrySet()) { String key = (String) entry.getKey(); String value = (String) entry.getValue(); Header header = new Header(key, value); result[index++] = header; } return result; } private HttpMethodConfiguration copy() { HttpMethodConfiguration copy = new HttpMethodConfiguration(); copy.setConnectionTimeout(getConnectionTimeout()); if (getHeaders() != null) { copy.setHeaders(getHeaders()); } if (getParams() != null) { copy.setParams(getParams()); } copy.setUseDefaultHeaders(isUseDefaultHeaders()); return copy; } public static HttpMethodConfiguration merge(HttpMethodConfiguration defaults, HttpMethodConfiguration base, HttpMethodConfiguration local) { HttpMethodConfiguration result = merge(defaults, base); return merge(result, local); } public static HttpMethodConfiguration merge(HttpMethodConfiguration base, HttpMethodConfiguration local) { if (base == null && local == null) { return null; } else if (base == null) { return local; } else if (local == null) { return base; } else { HttpMethodConfiguration result = base.copy(); if (local.getConnectionTimeout() != DEFAULT_CONNECTION_TIMEOUT) { result.setConnectionTimeout(local.getConnectionTimeout()); } if (local.getHeaders() != null) { result.getHeaders().putAll(local.getHeaders()); } if (local.getParams() != null) { result.getParams().putAll(local.getParams()); } if (local.getUseDefaultHeaders() != null) { result.setUseDefaultHeaders(local.isUseDefaultHeaders()); } return result; } } }