請求相關

import org.apache.http.NameValuePair; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.utils.URIBuilder; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import org.springframework.stereotype.Component; import java.util.ArrayList; import java.util.List; import java.util.Map; @Component public class HttpClientHelper { // @Autowired private CloseableHttpClient httpClient; // @Autowired private RequestConfig config; /** * 不帶參數的get請求，如果狀態碼爲200，則返回body，如果不爲200，則返回null * * @param url * @return * @throws Exception */ public String doGet(String url) throws Exception { // 聲明 http get 請求 HttpGet httpGet = new HttpGet(url); // 裝載配置信息 httpGet.setConfig(config); // 發起請求 CloseableHttpResponse response = this.httpClient.execute(httpGet); // 判斷狀態碼是否爲200 if (response.getStatusLine().getStatusCode() == 200) { // 返回響應體的內容 return EntityUtils.toString(response.getEntity(), "UTF-8"); } return null; } /** * 帶參數的get請求，如果狀態碼爲200，則返回body，如果不爲200，則返回null * * @param url * @return * @throws Exception */ public String doGet(String url, Map<String, Object> map) throws Exception { URIBuilder uriBuilder = new URIBuilder(url); if (map != null) { // 遍歷map,拼接請求參數 for (Map.Entry<String, Object> entry : map.entrySet()) { uriBuilder.setParameter(entry.getKey(), entry.getValue().toString()); } } // 調用不帶參數的get請求 return this.doGet(uriBuilder.build().toString()); } /** * 帶參數的post請求 * * @param url * @param map * @return * @throws Exception */ public HttpResult doPost(String url, Map<String, Object> map) throws Exception { // 聲明httpPost請求 HttpPost httpPost = new HttpPost(url); // 加入配置信息 httpPost.setConfig(config); // 判斷map是否爲空，不爲空則進行遍歷，封裝from表單對象 if (map != null) { List<NameValuePair> list = new ArrayList<NameValuePair>(); for (Map.Entry<String, Object> entry : map.entrySet()) { list.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString())); } // 構造from表單對象 UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(list, "UTF-8"); // 把表單放到post裏 httpPost.setEntity(urlEncodedFormEntity); } // 發起請求 CloseableHttpResponse response = this.httpClient.execute(httpPost); HttpResult httpResult =new HttpResult(); httpResult.setCode(response.getStatusLine().getStatusCode()); httpResult.setBody(EntityUtils.toString( response.getEntity(), "UTF-8")); return httpResult; } /** * 不帶參數post請求 * * @param url * @return * @throws Exception */ public HttpResult doPost(String url) throws Exception { return this.doPost(url, null); } }