httpclient之post 方法（参数为string）

package httpclient;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.http.*;
import org.apache.http.client.ClientProtocolException;
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.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import org.json.JSONObject;

/**
 * Created by jiangcui on 2018/5/18.
 */
public class HttpclientPostForString {
 ???public static void main(String[] args) {
 ???????CloseableHttpClient closeableHttpClient = HttpClients.createDefault();

 ???????//配置超时时间
 ???????RequestConfig requestConfig = RequestConfig.custom()
 ???????????????.setConnectTimeout(5000)
 ???????????????.setConnectionRequestTimeout(5000)
 ???????????????.setSocketTimeout(5000)
 ???????????????.setRedirectsEnabled(true)
 ???????????????.build();
 ???????HttpPost httpPost = new HttpPost("https://passport.cnblogs.com/user/signin?ReturnUrl=https%3A%2F%2Fwww.cnblogs.com%2F");

 ???????//设置超时时间
 ???????httpPost.setConfig(requestConfig);

 ???????//装配post请求参数

 ???????List<NameValuePair> list = new ArrayList<NameValuePair>();
 ???????list.add(new BasicNameValuePair("name", "jiangcui"));
 ???????list.add(new BasicNameValuePair("password", "chenzx0918"));

 ???????try {
 ???????????//将参数进行编码为合适的格式,如将键值对编码为param1=value1&param2=value2
 ???????????UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(list, "utf-8");
 ???????????httpPost.setEntity(urlEncodedFormEntity);

 ???????????//执行post方法
 ???????????CloseableHttpResponse closeableHttpResponse = closeableHttpClient.execute(httpPost);
 ???????????String strResult = "";

 ???????????if (null != closeableHttpResponse && !"".equals(closeableHttpResponse)) {
 ???????????????System.out.println(closeableHttpResponse.getStatusLine().getStatusCode());
 ???????????????if (closeableHttpResponse.getStatusLine().getStatusCode() == 200) {
 ???????????????????HttpEntity httpEntity = closeableHttpResponse.getEntity();
 ???????????????????strResult = EntityUtils.toString(httpEntity);
 ???????????????????System.out.println(strResult);
 ???????????????????//将字符串转换为 JSON格式
 ???????????????????JSONObject jsonObject = new JSONObject(strResult);
 ???????????????????//获取json串中的数据
 ???????????????????//String str = jsonObject.get("name").toString;

 ???????????????} else {
 ???????????????????strResult = "Error Response:" + closeableHttpResponse.getStatusLine().getStatusCode();
 ???????????????????System.out.println(strResult);
 ???????????????}
 ???????????}
 ???????} catch (ClientProtocolException e) {
 ???????????e.printStackTrace();
 ???????} catch (ParseException e) {
 ???????????e.printStackTrace();
 ???????} catch (IOException e) {
 ???????????e.printStackTrace();
 ???????} finally {
 ???????????try {
 ???????????????if (closeableHttpClient != null) {
 ???????????????????closeableHttpClient.close();
 ???????????????}
 ???????????} catch (IOException e) {
 ???????????????e.printStackTrace();
 ???????????}
 ???????}
 ???}
}

httpclient之post 方法（参数为string）

原文地址：https://www.cnblogs.com/jshtest/p/9070687.html