Java tutorial
/** * Copyright 2009-2018 Wudao Software Studio(wudaosoft.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.wudaosoft.net.httpclient; import java.io.IOException; import java.io.InputStream; import java.io.StringReader; import javax.xml.transform.sax.SAXSource; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.ResponseHandler; import org.xml.sax.EntityResolver; import org.xml.sax.InputSource; import org.xml.sax.SAXException; import org.xml.sax.XMLReader; import org.xml.sax.helpers.XMLReaderFactory; /** * @author Changsoul.Wu */ public class SAXSourceResponseHandler implements ResponseHandler<SAXSource> { @Override public SAXSource handleResponse(HttpResponse response) throws ClientProtocolException, IOException { int status = response.getStatusLine().getStatusCode(); if (status < 200 || status >= 300) { throw new ClientProtocolException("Unexpected response status: " + status); } HttpEntity entity = response.getEntity(); if (entity == null) { throw new ClientProtocolException("Response contains no content"); } return readSAXSource(entity.getContent()); } private SAXSource readSAXSource(InputStream body) throws IOException { try { XMLReader reader = XMLReaderFactory.createXMLReader(); reader.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); reader.setFeature("http://xml.org/sax/features/external-general-entities", false); reader.setEntityResolver(NO_OP_ENTITY_RESOLVER); return new SAXSource(reader, new InputSource(body)); } catch (SAXException ex) { throw new ClientProtocolException("Could not parse document: " + ex.getMessage(), ex); } } private static final EntityResolver NO_OP_ENTITY_RESOLVER = new EntityResolver() { @Override public InputSource resolveEntity(String publicId, String systemId) { return new InputSource(new StringReader("")); } }; }