HttpClientUtil实现post、get请求
2017-06-25 10:26
405 查看
package com.taotao.common.utils; import java.io.IOException; import java.net.URI; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.apache.http.NameValuePair; 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.entity.ContentType; import org.apache.http.entity.StringEntity; 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; public class HttpClientUtil { public static String doGet(String url, Map<String, String> 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); } public static String doPost(String url, Map<String, String> param) { // 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); // 创建参数列表 if (param != null) { List<NameValuePair> paramList = new ArrayList<>(); for (String key : param.keySet()) { paramList.add(new BasicNameValuePair(key, param.get(key))); } // 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 { response.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return resultString; } public static String doPost(String url) { return doPost(url, null); } public static String doPostJson(String url, String json) { // 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 StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON); 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 { response.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return resultString; } }
相关文章推荐
- Android开发 httpClient post方法请求tomcat服务器实现注册登陆
- C#通过WebClient/HttpWebRequest实现http的post/get方法
- HttpClientUtil 实现doget 和 dopost
- C#通过WebClient/HttpWebRequest实现http的post/get方法与java对接
- 用Httpclient通过post方式来实现http请求
- Android开发 httpclient Post方法实现从tomcat服务器(JSP)获取listview信息
- C#通过WebClient/HttpWebRequest实现http的post/get方法与java对接
- 使用Httpclient向百度翻译提交POST请求 接受返回的JSON字符串 实现翻译功能(2)----Httpclient使用详解
- HttpClient 4.5版本实现文件上传下载以及常用post、get请求
- java httpclient POST和GET请求 发送JSON
- httpcomponents-client-4.3.5实现http的post请求和get请求方法
- [c#][Windows 10 | Windows 10 mobile | Windows Phone] HttpClient 实现form-data POST上传请求
- Android开发 httpClient post方法请求tomcat服务器实现注册登陆
- C#通过WebClient/HttpWebRequest实现http的post/get方法
- HttpClient 实现重定向 以表单方式post提交参数
- C#通过WebClient/HttpWebRequest实现http的post/get方法
- C#通过WebClient/HttpWebRequest实现http的post/get方法
- C#通过WebClient/HttpWebRequest实现http的post/get方法
- Httpclient post和get请求
- HttpClient和HttpUrlConnection实现post发送和接收json数据