pom.xml 文件中dependency 1<dependencies> 2<dependency> 3<groupId>org.testng</groupId> 4<artifactId>testng</artifactId> 5<version>6.14.3</version> 6</dependency> 7<dependency> 8<groupId>com.relevantcodes</groupId> 9<artifactId>extentreports</artifactId>10<version>2.41.1</version>11</dependency>12<dependency>13<groupId>com.vimalselvam</groupId>14<artifactId>testng-extentsreport</artifactId>15<versi...
0. 摘要0.1 添加依赖<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.2</version></dependency> 0.2 代码//1. 打开浏览器 创建httpclient对象
CloseableHttpClient httpClient = HttpClients.createDefault();
//2. 输入网址
HttpGet httpGet = new HttpGet("http://www.baidu.com");
//3. 发送请求
CloseableHttpResponse httpResponse = httpClient.execute(httpGet...
有关httpclient:HttpClient相比传统JDK自带的URLConnection,增加了易用性和灵活性,它不仅使客户端发送Http请求变得容易,而且也方便开发人员测试接口(基于Http协议的),提高了开发的效率,也方便提高代码的健壮性。因此熟练掌握HttpClient是很重要的必修内容,掌握HttpClient后,相信对于Http协议的了解会更加深入。org.apache.commons.httpclient.HttpClient与org.apache.http.client.HttpClient的区别Commons的HttpClient项...
目前知道的三种主流的Web服务实现方案为:REST:表象化状态转变 (软件架构风格)SOAP:简单对象访问协议 XML-RPC:远程过程调用协议 下面分别作简单介绍:REST:表征状态转移(Representational State Transfer),采用Web 服务使用标准的 HTTP 方法 (GET/PUT/POST/DELETE) 将所有 Web 系统的服务抽象为资源,REST从资源的角度来观察整个网络,分布在各处的资源由URI确定,而客户端的应用通过URI来获取资源的表征。Http协议所抽象的...
相对于httpurlconnection ,httpclient更加丰富,也更加强大,其中apache有两个项目都是httpclient,一个是commonts包下的,这个是通用的,更专业的是org.apache.http.包下的,所以我一般用后者;httpclient可以处理长连接,保存会话,重连接,以及请求过滤器,连接重用等等...下面是测试代码(全部总结来自官方文档,以及翻译)须要下载核心包:httpclient-4.3.4.jar ,也可在官网下载:http://hc.apache.org/downloads.cgipackag...
package jkcs;import java.io.IOException;import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util...
问题之前使用httpclient请求数据源码方法:publicstatic String doHttp(HttpMethod result, int timeout, String charset) {HttpClient client = new HttpClient();try {HttpConnectionManagerParams managerParams = client.getHttpConnectionManager().getParams();managerParams.setConnectionTimeout(timeout);client.executeMethod(result);InputStream resStream = result.getResponseBodyAsStream();BufferedReader br = new...
转自:http://luan.iteye.com/blog/1820054I/O exception (java.net.SocketException) caught when processing request: Connect查阅了HttpClient官方的异常说明文档(http://hc.apache.org/httpclient-3.x/exception-handling.html),可以看到以下一段话:In some circumstances, usually when under heavy load, the web server may be able to receive requests but unable to process them. A lack of sufficient resources l...
1. 依赖包<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.4.1</version>
</dependency>2. 代码
import org.apache.http.*;
import org.apache.http.client.HttpRequestRetryHandler;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
i...
httpclient是apache的一个项目:http://hc.apache.org/文档比較完好:http://hc.apache.org/httpcomponents-client-ga/tutorial/html/这里就不啰嗦了,主要是在做demo的时候遇到的一些问题在这里总结一下:[引用请注明出处http://blog.csdn.net/bhq2010/article/details/9210007]1、使用连接池虽说http协议时无连接的,但毕竟是基于tcp的,底层还是须要和server建立连接的。对于须要从同一个网站抓取大量网页的程序,应该使用连接池...
我正在构建一个简单的web-scraper,我需要获取相同的页面几百次,并且页面中的属性是动态的,并且应该在每个请求时更改.我已经构建了一个基于多线程HttpClient的类来处理请求,我正在使用ExecutorService来创建线程池并运行线程.问题是动态属性有时不会在每个请求上发生变化,最终会在3或4个后续线程上获得相同的值.我已经阅读了很多关于HttpClient的内容,我真的无法找到这个问题的来源.它可能是缓存或类似的东西!?
更新:这是每个线程...
直接下载代码,修改test类的参数即可使用。 源代码:https://github.com/gaojinheng/crawler-baiduPicture 工具:IntelliJ IDEA,jdk9.0.4目录
1 页面分析2 工程文件3 代码分析3.1 变量3.2 引入依赖3.3 Crawler.java3.4 HttpUtils.java3.5 test.java
4 效果演示
1 页面分析进入https://image.baidu.com/,搜索杨超越 在网页上右键单击,弹出菜单中选择“检查”,进入开发者模式。 选择Network,并且选中XHR后,重新加载页面,...
httpClient的get或post请求方式步骤:
生成一个HttpClient对象并设置相应的参数;生成一个GetMethod对象或PostMethod并设置响应的参数;用HttpClient生成的对象来执行GetMethod生成的Get方法;处理响应状态码;若响应正常,处理HTTP响应内容;释放连接。导入如下jar包<!--HttpClient-->
<dependency><groupId>commons-httpclient</groupId><artifactId>commons-httpclient</artifactId><version>3.1</version>
</dependency><!--fa...
httpclien调用skipHttpsUtil得wrapClient方法跳过https证书验证
//POSTSkipHttpsUtil skipHttpsUtil=new SkipHttpsUtil();CloseableHttpClient httpclient = null;CloseableHttpResponse response = null;try {httpclient = (CloseableHttpClient)skipHttpsUtil.wrapClient();HttpPost post = new HttpPost(url);String json = "{\"image\":\""+"ddd"+"\",\"Type\":\""+"ddddd"+"\",\"Flag\":\""+"dddd"+"\"}"; StringEntity ...