cn.wanghaomiao.seimi.http.hc.HcRequestGenerator.java Source code

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Here is the source code for cn.wanghaomiao.seimi.http.hc.HcRequestGenerator.java

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/*
   Copyright 2015 Wang Haomiao<et.tw@163.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 cn.wanghaomiao.seimi.http.hc;

import cn.wanghaomiao.seimi.def.BaseSeimiCrawler;
import cn.wanghaomiao.seimi.exception.SeimiProcessExcepiton;
import cn.wanghaomiao.seimi.http.HttpMethod;
import cn.wanghaomiao.seimi.http.SeimiAgentContentType;
import cn.wanghaomiao.seimi.struct.CrawlerModel;
import cn.wanghaomiao.seimi.struct.Request;
import com.alibaba.fastjson.JSON;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.RequestBuilder;
import org.springframework.util.CollectionUtils;

import java.util.Map;

/**
 * @author  et.tw@163.com
 * @since 2016/4/14.
 */
public class HcRequestGenerator {
    public static RequestBuilder getHttpRequestBuilder(Request request, CrawlerModel crawlerModel) {
        RequestBuilder requestBuilder;
        BaseSeimiCrawler crawler = crawlerModel.getInstance();
        if (request.isUseSeimiAgent()) {
            if (StringUtils.isBlank(crawler.seimiAgentHost())) {
                throw new SeimiProcessExcepiton("SeimiAgentHost is blank.");
            }
            String seimiAgentUrl = "http://" + crawler.seimiAgentHost()
                    + (crawler.seimiAgentPort() != 80 ? (":" + crawler.seimiAgentPort()) : "") + "/doload";
            requestBuilder = RequestBuilder.post().setUri(seimiAgentUrl);
            requestBuilder.addParameter("url", request.getUrl());
            if (StringUtils.isNotBlank(crawler.proxy())) {
                requestBuilder.addParameter("proxy", crawler.proxy());
            }
            if (request.getSeimiAgentRenderTime() > 0) {
                requestBuilder.addParameter("renderTime", String.valueOf(request.getSeimiAgentRenderTime()));
            }
            if (StringUtils.isNotBlank(request.getSeimiAgentScript())) {
                requestBuilder.addParameter("script", request.getSeimiAgentScript());
            }
            //SeimiAgent?cookie
            if ((request.isSeimiAgentUseCookie() == null && crawlerModel.isUseCookie())
                    || (request.isSeimiAgentUseCookie() != null && request.isSeimiAgentUseCookie())) {
                requestBuilder.addParameter("useCookie", "1");
            }
            if (request.getParams() != null && request.getParams().size() > 0) {
                requestBuilder.addParameter("postParam", JSON.toJSONString(request.getParams()));
            }
            if (request.getSeimiAgentContentType().val() > SeimiAgentContentType.HTML.val()) {
                requestBuilder.addParameter("contentType", request.getSeimiAgentContentType().typeVal());
            }
        } else {
            if (HttpMethod.POST.equals(request.getHttpMethod())) {
                requestBuilder = RequestBuilder.post().setUri(request.getUrl());
            } else {
                requestBuilder = RequestBuilder.get().setUri(request.getUrl());
            }
            RequestConfig config = RequestConfig.custom().setProxy(crawlerModel.getProxy())
                    .setCircularRedirectsAllowed(true).build();

            if (request.getParams() != null) {
                for (Map.Entry<String, String> entry : request.getParams().entrySet()) {
                    requestBuilder.addParameter(entry.getKey(), entry.getValue());
                }
            }
            requestBuilder.setConfig(config).setHeader("User-Agent",
                    crawlerModel.isUseCookie() ? crawlerModel.getCurrentUA() : crawler.getUserAgent());
            requestBuilder.setHeader("Accept",
                    "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
            requestBuilder.setHeader("Accept-Language", "zh-CN,zh;q=0.8,en;q=0.6");
        }
        if (!CollectionUtils.isEmpty(request.getHeader())) {
            for (Map.Entry<String, String> entry : request.getHeader().entrySet()) {
                requestBuilder.setHeader(entry.getKey(), entry.getValue());
            }
        }
        return requestBuilder;
    }
}