使用HttpClient配置代理服务器模拟浏览器发送请求调用接口测试

在调用公司的某个接口时，直接通过浏览器配置代理服务器可以请求到如下数据：

请求url地址：http://wwwnei.xuebusi.com/rd-interface/getsales.jsp?cid=12007036

 1 <Root>
 2     <Result>1</Result>
 3     <Message></Message>
 4     <SalesLevel>
 5         <![CDATA[KU6]]>
 6     </SalesLevel>
 7     <BranchId>
 8         <![CDATA[0]]>
 9     </BranchId>
10     <ENName>
11         <![CDATA[jamie.liu]]>
12     </ENName>
13     <Mobile>
14         <![CDATA[15001038876]]>
15     </Mobile>
16     <BranchCompany>
17         <![CDATA[集团总部]]>
18     </BranchCompany>
19     <Telephone>
20         <![CDATA[010-58344688-65578]]>
21     </Telephone>
22     <Email>
23         <![CDATA[jamie.liu@xuebusi.com]]>
24     </Email>
25     <CNName>
26         <![CDATA[张三]]>
27     </CNName>
28     <CityForLive800>
29         <![CDATA[集团总部]]>
30     </CityForLive800>
31 </Root>

但是，在java代码中，没有配置代理服务器的情况下，直接使用HttpClient测试请求该接口时，却返回如下数据：

Active connections: 1 
server accepts handled requests
 786216 786216 788311 
Reading: 0 Writing: 1 Waiting: 0

解决方案：

使用HttpClient模拟浏览器发送请求时，配置自己公司的代理服务器地址和端口号，然后接口就能正常返回了。

  1 import com.xuebusi.ihr.core.utils.HttpClientUtil;
  2 import com.xuebusi.ihr.core.utils.Xml2Json;
  3 import org.apache.http.HttpEntity;
  4 import org.apache.http.HttpHost;
  5 import org.apache.http.NameValuePair;
  6 import org.apache.http.ParseException;
  7 import org.apache.http.client.entity.UrlEncodedFormEntity;
  8 import org.apache.http.client.methods.CloseableHttpResponse;
  9 import org.apache.http.client.methods.HttpGet;
 10 import org.apache.http.client.methods.HttpPost;
 11 import org.apache.http.config.Registry;
 12 import org.apache.http.config.RegistryBuilder;
 13 import org.apache.http.conn.socket.ConnectionSocketFactory;
 14 import org.apache.http.conn.socket.PlainConnectionSocketFactory;
 15 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
 16 import org.apache.http.impl.client.CloseableHttpClient;
 17 import org.apache.http.impl.client.HttpClientBuilder;
 18 import org.apache.http.impl.client.HttpClients;
 19 import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
 20 import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
 21 import org.apache.http.message.BasicNameValuePair;
 22 import org.apache.http.util.EntityUtils;
 23 
 24 import javax.net.ssl.SSLContext;
 25 import javax.net.ssl.TrustManager;
 26 import javax.net.ssl.X509TrustManager;
 27 import java.io.IOException;
 28 import java.io.UnsupportedEncodingException;
 29 import java.security.KeyManagementException;
 30 import java.security.NoSuchAlgorithmException;
 31 import java.security.cert.CertificateException;
 32 import java.util.ArrayList;
 33 import java.util.HashMap;
 34 import java.util.List;
 35 import java.util.Map;
 36 
 37 /**
 38  * http使用代理服务器发送请求测试类
 39  * Created by SYJ on 2017/9/19.
 40  */
 41 public class HttpProxyTest {
 42 
 43     public static void main(String[] args) throws ParseException, IOException, KeyManagementException, NoSuchAlgorithmException {
 44         String saleUserInfoXml = getSaleUserInfoXml();
 45         System.out.println("
xml转成json格式:
" + saleUserInfoXml);
 46 
 47     }
 48 
 49     /**
 50      * 测试调用rd查询销售顾问信息接口
 51      * 将接口返回的xml格式数据转成json
 52      * @return
 53      */
 54     public static String getSaleUserInfoXml() {
 55         String url = "http://wwwnei.xuebusi.com/rd-interface/getsales.jsp";
 56         HashMap<String, Object> map = new HashMap<>();
 57         map.put("cid", "12007036");
 58         String responseBody;
 59         String xml2JsonStr = "";
 60         try {
 61             responseBody = send(url, map, "utf-8");
 62             System.out.println("
接口返回xml格式数据:
" + responseBody);
 63             xml2JsonStr = Xml2Json.xml2Json(responseBody).toJSONString();
 64         } catch (Exception e) {
 65             e.printStackTrace();
 66         }
 67         return xml2JsonStr;
 68     }
 69 
 70     /**
 71      * 设置代理
 72      *
 73      * @param hostOrIP
 74      * @param port
 75      * @return
 76      */
 77     public static HttpClientBuilder proxy(String hostOrIP, int port) {
 78         // 依次是代理地址，代理端口号，协议类型
 79         HttpHost proxy = new HttpHost(hostOrIP, port, "http");
 80         DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
 81         return HttpClients.custom().setRoutePlanner(routePlanner);
 82     }
 83 
 84     /**
 85      * 模拟请求
 86      *
 87      * @param url      资源地址
 88      * @param map      参数列表
 89      * @param encoding 编码
 90      */
 91     public static String send(String url, Map<String, Object> map, String encoding) throws Exception {
 92         String body = "";
 93         SSLContext sslcontext = createIgnoreVerifySSL();//绕过证书验证，处理https请求
 94         // 设置协议http和https对应的处理socket链接工厂的对象
 95         Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
 96                 .register("http", PlainConnectionSocketFactory.INSTANCE)
 97                 .register("https", new SSLConnectionSocketFactory(sslcontext))
 98                 .build();
 99         PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
100         HttpClients.custom().setConnectionManager(connManager);
101 
102         //创建自定义的httpclient对象,指定自己公司的代理服务器地址和端口号
103         CloseableHttpClient client = proxy("192.168.20.6", 3128).setConnectionManager(connManager).build();
104         //CloseableHttpClient client = HttpClients.createDefault();
105 
106         HttpGet httpGet = buildHttpGet(url, map);
107 
108         //设置header信息
109         httpGet.setHeader("Content-Type", "text/xml;charset=UTF-8");
110         httpGet.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36");
111 
112         try {
113             CloseableHttpResponse response = client.execute(httpGet);//执行请求操作，并拿到结果（同步阻塞）
114             HttpEntity entity = response.getEntity();//获取结果实体
115             if (entity != null) {
116                 body = EntityUtils.toString(entity, encoding);//按指定编码转换结果实体为String类型
117             }
118             EntityUtils.consume(entity);
119             response.close();//释放链接
120         } catch (IOException e) {
121             e.printStackTrace();
122         }
123         return body;
124     }
125 
126     /**
127      * httpGet传参
128      *
129      * @param url
130      * @param params
131      * @return
132      */
133     public static HttpGet buildHttpGet(String url, Map<String, Object> params) {
134         String parmStr = HttpClientUtil.getUrlParamsByMap(params);
135         try {
136             url = HttpClientUtil.urlFormat(url, parmStr, "utf-8");
137         } catch (Exception e) {
138             e.printStackTrace();
139         }
140         return new HttpGet(url);
141     }
142 
143     /**
144      * httpPost传参
145      *
146      * @param url
147      * @param params
148      * @return
149      */
150     public static HttpPost buildHttpPost(String url, Map<String, Object> params) {
151         HttpPost httpPost = new HttpPost(url);//创建post方式请求对象
152         List<NameValuePair> nvps = new ArrayList<>();//装填参数
153         if (params != null) {
154             for (Map.Entry<String, Object> entry : params.entrySet()) {
155                 nvps.add(new BasicNameValuePair(entry.getKey(), (String) entry.getValue()));
156             }
157         }
158         try {
159             //设置参数到请求对象中
160             httpPost.setEntity(new UrlEncodedFormEntity(nvps, "UTF-8"));
161         } catch (UnsupportedEncodingException e) {
162             e.printStackTrace();
163         }
164         System.out.println("请求地址：" + url + "请求参数：" + nvps.toString());
165         return httpPost;
166     }
167 
168     /**
169      * 绕过验证
170      *
171      * @return
172      * @throws NoSuchAlgorithmException
173      * @throws KeyManagementException
174      */
175     public static SSLContext createIgnoreVerifySSL() throws NoSuchAlgorithmException, KeyManagementException {
176         SSLContext sc = SSLContext.getInstance("SSLv3");
177 
178         // 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
179         X509TrustManager trustManager = new X509TrustManager() {
180             @Override
181             public void checkClientTrusted(
182                     java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
183                     String paramString) throws CertificateException {
184             }
185             @Override
186             public void checkServerTrusted(
187                     java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
188                     String paramString) throws CertificateException {
189             }
190             @Override
191             public java.security.cert.X509Certificate[] getAcceptedIssuers() {
192                 return null;
193             }
194         };
195         sc.init(null, new TrustManager[]{trustManager}, null);
196         return sc;
197     }
198 }

上面只是在本地测试调用预上线接口时的解决方案，实际上将项目部署到公司预上线时，是不需要配置代理服务器的，直接使用HttpClient就可以正常调用的，也能正常返回xml格式数据。

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原文地址：https://www.cnblogs.com/jun1019/p/7553379.html