httpclient

HttpClient使用详解

霸气de小男生 提交于 2020-01-21 03:15:43
HttpClient的主要功能: 实现了所有 HTTP 的方法(GET、POST、PUT、HEAD、DELETE、HEAD、OPTIONS 等) 支持 HTTPS 协议 支持代理服务器(Nginx等)等 支持自动(跳转)转向 等等 引入依赖 <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.5</version> </dependency> 使用详解 1. get方法 public class GetUtils { //无参方式 public void get(String url) { getWithParams(url, new HashMap<>()); } //有参方式 public void getWithParams(String url, Map<String, Object> params) { CloseableHttpClient httpClient = HttpClientBuilder.create().build();

HTTP客户端连接之OkClient和HTTPClient

笑着哭i 提交于 2020-01-20 20:46:53
HttpClient和OkHttp一般用于调用其它服务,一般服务暴露出来的接口都为http,http常用请求类型就为GET、PUT、POST和DELETE,因此主要介绍这些请求类型的调用 HttpClient使用介绍 使用HttpClient发送请求主要分为一下几步骤: 创建 CloseableHttpClient对象或CloseableHttpAsyncClient对象,前者同步,后者为异步 创建Http请求对象 调用execute方法执行请求,如果是异步请求在执行之前需调用start方法 创建连接 CloseableHttpClient httpClient = HttpClientBuilder . create ( ) . build ( ) ; 该连接为同步连接 GET请求: @Test public void testGet ( ) throws IOException { String api = "/api/files/1" ; String url = String . format ( "%s%s" , BASE_URL , api ) ; HttpGet httpGet = new HttpGet ( url ) ; CloseableHttpResponse response = httpClient . execute ( httpGet ) ;

HttpClient problem with URLs which include curly braces

六月ゝ 毕业季﹏ 提交于 2020-01-20 06:09:24
问题 I am using HttpClient for my android application. At some point, I have to fetch data from remote locations. Below is the snippet how I made use of HttpClient to get the response. String url_s = "https://mydomain.com/abc/{5D/{B0blhahblah-blah}I1.jpg"; //my url string DefaultHttpClient httpClient = new DefaultHttpClient(); response = httpClient.execute(new HttpGet(url_s)); It works absolutely fine in most cases but not when there is some curly braces in my url which is String basically. The

How to login in web site using Java

北城余情 提交于 2020-01-20 02:26:33
问题 I want to access some pages of web site https://myoffice.bt.com which requires user authentication using java. We have to sign in first to access pages. I have wriiten following code. package root; import java.io.IOException; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.UsernamePasswordCredentials; import org.apache.commons.httpclient.auth.AuthScope; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.params

How to login in web site using Java

做~自己de王妃 提交于 2020-01-20 02:26:14
问题 I want to access some pages of web site https://myoffice.bt.com which requires user authentication using java. We have to sign in first to access pages. I have wriiten following code. package root; import java.io.IOException; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.UsernamePasswordCredentials; import org.apache.commons.httpclient.auth.AuthScope; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.params

angular 使用httpclient服务

余生长醉 提交于 2020-01-19 18:33:35
1.使用http服务 要在新建的服务中进行一次声明   import {HttpClient,HttpHeaders} from '@angular/common/http';   import { Observable, Subscriber } from 'rxjs' 2.要在根目录中进行一次引入   import { HttpClientModule } from '@angular/common/http'  在imports中进行注入   HttpClientModule 来源: https://www.cnblogs.com/rockyjs/p/12214986.html

【转载】.net Core 使用IHttpClientFactory请求

為{幸葍}努か 提交于 2020-01-19 11:39:42
转载地址: https://www.cnblogs.com/chenxi001/p/12203731.html 一、为什么不用HttpClient 1.HttPClient使用完之后不会立即关闭开启网络连接时会占用底层socket资源,但在HttpClient调用其本身的Dispose方法时,并不能立刻释放该资源 2.如果频繁的使用HttpClient,频繁的打开链接,关闭链接消耗就会很大。 二、解决方案 1.我们可以延长HttpClient的生命周期,比如对其建一个静态的对象 private static HttpClient Client = new HttpClient(); 2.或者使用单例模式,至于你使用哪一种单例模式就看你自己了,这里就不细将了。因为这样感觉起来不是很舒服 三、HttpClientFactory 1.在.NET Core 2.1版本之后引入的 HttpClientFactory解决了HttpClient的所有痛点。有了 HttpClientFactory,我们不需要关心如何创建HttpClient,又如何释放它。通过它可以创建具有特定业务的HttpClient,而且可以很友好的和 DI 容器结合使用,更为灵活。    2.HttpClientFactory 创建的HttpClient,也即是HttpClientHandler

springboot2.X集成HttpClient 发送HTTPS 请求

穿精又带淫゛_ 提交于 2020-01-19 11:35:07
1)jar <!--httpclient 发送外部https/http 请求--> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpcore</artifactId> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.11</version> </dependency> 2)配置 httpclient: maxTotal: 300 defaultMaxPerRoute: 100 connectTimeout: 1000 connectionRequestTimeout: 500 socketTimeout: 100000000 staleConnectionCheckEnabled: true # keyStorePath: C:/Users/Administrator/Desktop

通过 Apache Commons HttpClient 发送 HTTPS 请求

China☆狼群 提交于 2020-01-18 11:20:14
1、通过 HTTPS 发送 POST 请求; 2、HTTPS 安全协议采用 TLSv1.2; 3、 使用代理(Proxy)进行 HTTPS 访问; 4、指定 Content-Type 为:application/x-www-form-urlencoded; 5、HTTPS 请求时加载客户端证书(Client Certificate); 6、忽略服务器端证书链(Server Certificate Chain)的校验(Validate)。 public static void main(String[] args) throws IOException, UnrecoverableKeyException, CertificateException, KeyStoreException, KeyManagementException { SSLConnectionSocketFactory socketFactory = getSocketFactory(); // 创建 CloseableHttpClient 对象 CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(socketFactory).build(); // 指定请求的 URL 并创建 HttpPost 对象 HttpPost

HttpClient 使用证书和跳过证书

风格不统一 提交于 2020-01-17 18:20:04
引用 compile 'org.apache.httpcomponents:httpclient:4.5.10' 使用证书 import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.security.KeyStore; import java.security.SecureRandom; import java.util.Arrays; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.TrustManagerFactory; import javax.net.ssl.X509TrustManager; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.ResponseHandler; import org