Http请求调用第三方接口

2023-06-29 11:40| 来源: 网络整理| 查看: 265

package org.springblade.common.utils;

import java.io.File; import java.io.IOException; import java.io.InputStream; import java.net.URI; import java.net.URLEncoder; import java.nio.charset.Charset; import java.util.ArrayList; import java.util.List; import java.util.Map;

import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.NameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.clienthods.CloseableHttpResponse; import org.apache.http.clienthods.HttpGet; import org.apache.http.clienthods.HttpPost; import org.apache.http.client.utils.URIBuilder; import org.apache.http.entity.ContentType; import org.apache.http.entity.FileEntity; import org.apache.http.entity.StringEntity; import org.apache.http.entity.mime.MultipartEntityBuilder; 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.springframework.web.context.request.WebRequest;

public class HttpClientUtil {

private HttpClientUtil() { } public static String doGet(String url, Map param) { // 创建Httpclient对象 CloseableHttpClient httpclient = HttpClients.createDefault(); String resultString = ""; CloseableHttpResponse response = null; try { // 创建uri URIBuilder builder = new URIBuilder(url); if (param != null) { for (String key : param.keySet()) { builder.addParameter(key, param.get(key)); } } URI uri = builder.build(); // 创建http GET请求 HttpGet httpGet = new HttpGet(uri); // 执行请求 response = httpclient.execute(httpGet); // 判断返回状态是否为200 if (response.getStatusLine().getStatusCode() == 200) { resultString = EntityUtils.toString(response.getEntity(), "UTF-8"); } } catch (Exception e) { e.printStackTrace(); } finally { try { if (response != null) { response.close(); } httpclient.close(); } catch (IOException e) { e.printStackTrace(); } } return resultString; } public static String doGet(String url) { return doGet(url, null); } /** * post formdata * @param url * @param param * @return */ public static String doPost(String url, Map param) { // 创建Httpclient对象 CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = null; String resultString = ""; try { HttpPost httpPost=null; // 创建参数列表 if (param != null) { List paramList = new ArrayList(); StringBuilder paramstr=new StringBuilder(""); for (String key:param.keySet()){ paramstr.append(key + "=" + URLEncoder.encode((String) param.get(key), "UTF-8") + "&"); } /* for (String key : param.keySet()) { paramList.add(new BasicNameValuePair(key, (String) param.get(key))); }*/ // 创建Http Post请求 httpPost = new HttpPost(url+"?"+paramstr); // 模拟表单 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList); httpPost.setEntity(entity); } // 执行http请求 response = httpClient.execute(httpPost); resultString = EntityUtils.toString(response.getEntity(), "utf-8"); } catch (Exception e) { e.printStackTrace(); } finally { try { if (response != null) { response.close(); } httpClient.close(); } catch (IOException e) { e.printStackTrace(); } } return resultString; } public static String doPost(String url) { return doPost(url, null); } /** * post 请求发送json * @param url * @param param * @param token_header * @return * @throws Exception */ public static String doPostJson(String url, Map param,String token_header) throws Exception { // 创建Httpclient对象 CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = null; String resultString = ""; try { // 创建Http Post请求 HttpPost httpPost = new HttpPost(url); // 创建请求内容 httpPost.setHeader("HTTP Method","POST"); httpPost.setHeader("Connection","Keep-Alive"); httpPost.setHeader("Content-Type","application/json;charset=utf-8"); if(token_header != null) { httpPost.setHeader("x-authentication-token", token_header); } StringEntity entity = new StringEntity(JSON.toJSONString(param)); entity.setContentType("application/json;charset=utf-8"); httpPost.setEntity(entity); // 执行http请求 response = httpClient.execute(httpPost); if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { resultString = EntityUtils.toString(response.getEntity(), "UTF-8"); } } catch (Exception e) { throw e; } finally { try { if(response!=null){ response.close(); } } catch (IOException e) { e.printStackTrace(); } } return resultString; } /** * httpClient 发送文件 * @param param 其他参数 * @param is 文件流 * @param fileName 文件名 * @return * @throws Exception */ public static String doUpload(String uploadURL,Map param, InputStream is,String fileName) throws Exception { String result =""; try { //创建HttpClient HttpPost httpPost = new HttpPost(uploadURL); httpPost.setHeader("ContentType","text/xml"); HttpPost post = new HttpPost(uploadURL); HttpEntity entity = new FileEntity(new File(fileName)); post.setEntity(entity); CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = httpClient.execute(post); System.out.println(response.getStatusLine().getStatusCode()); //执行提交 HttpEntity responseEntity = response.getEntity(); if(responseEntity != null){ //将响应的内容转换成字符串 result = EntityUtils.toString(responseEntity, Charset.forName("UTF-8")); } response.close(); httpClient.close(); }catch (Exception ex){ ex.printStackTrace(); }finally { try { if(is!=null){ is.close(); } } catch (IOException e) { e.printStackTrace(); } } return result; }

}

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