httpclient模拟访问第三方接口（登录后携带cookie进行接口访问） Java

【httpclient模拟访问第三方接口（登录后携带cookie进行接口访问）】import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.CookieStore;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* http请求工具类
*
* @author aaa
* @date 2019/07/23
*/
public class HttpUtil {
private final static Logger logger = LoggerFactory.getLogger(HttpUtil.class);
public static String sendPost(String loginUrl, String formUrl, Map loginParam,
Map formParam) throws Exception {
StringBuffer cookie = new StringBuffer();
CookieStore cookieStore = new BasicCookieStore();
CloseableHttpClient httpClient = HttpClients.custom().setDefaultCookieStore(cookieStore).build();
// POST请求
HttpPost httpPost = new HttpPost(loginUrl);
// 构造请求参数
List list = new ArrayList();
for (Map.Entry entry : loginParam.entrySet()) {
list.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
if (list.size() > 0) {
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "utf-8");
httpPost.setEntity(entity);
}
// 设置请求头
httpPost.addHeader("Accept", "*/*");
httpPost.addHeader("Accept-Language", "zh-CN,zh; q=0.8");
httpPost.addHeader("Connection", "keep-alive");
httpPost.addHeader("User-Agent",
"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36");
Map headParamsMap = new HashMap();
headParamsMap.put("Host", "");
headParamsMap.put("Referer", "");
Set entrySet = headParamsMap.entrySet();
for (Entry entry : entrySet) {
httpPost.addHeader(entry.getKey(), entry.getValue());
}
HttpResponse response = httpClient.execute(httpPost);
String result = "";
if (response != null) {
int statusCode = response.getStatusLine().getStatusCode();
// result = EntityUtils.toString(response.getEntity(), "utf-8");
if (statusCode == HttpStatus.SC_OK) {
// 获得Cookies
List cookies = cookieStore.getCookies();
for (Cookie c : cookies) {
cookie.append(c.getName()).append("=").append(c.getValue()).append("; ");
}
result = sendPostByCookie(formUrl, cookieStore, formParam);
}
}
return result;
}
public static String sendPostByCookie(String url, CookieStore cookieStore, Map param)
throws Exception {
CloseableHttpClient httpClient = HttpClients.custom().setDefaultCookieStore(cookieStore).build();
// POST请求
HttpPost httpPost = new HttpPost(url);
// 构造请求参数
List list = new ArrayList();
for (Map.Entry entry : param.entrySet()) {
list.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
if (list.size() > 0) {
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "utf-8");
httpPost.setEntity(entity);
}
// 设置请求头
httpPost.addHeader("Accept", "*/*");
httpPost.addHeader("Accept-Language", "zh-CN,zh; q=0.8");
httpPost.addHeader("Connection", "keep-alive");
httpPost.addHeader("User-Agent",
"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36");
Map headParamsMap = new HashMap();
headParamsMap.put("Host", "");
headParamsMap.put("Referer", "");
Set entrySet = headParamsMap.entrySet();
for (Entry entry : entrySet) {
httpPost.addHeader(entry.getKey(), entry.getValue());
}
HttpResponse response = httpClient.execute(httpPost);
String result = "";
if (response != null) {
int statusCode = response.getStatusLine().getStatusCode();
result = EntityUtils.toString(response.getEntity(), "utf-8");
logger.info("\n返回码：" + statusCode + "\n返内容：" + result);
}
return result;
}
}

httpclient模拟访问第三方接口（登录后携带cookie进行接口访问）

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