httpClient入门到精通-------doPost

来源：互联网发布：守望先锋设置优化编辑：程序博客网时间：2024/05/29 17:08

doPost无参请求

package cn.itcast.httpclient;import org.apache.http.client.methods.CloseableHttpResponse;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.util.EntityUtils;public class DoPOST {    public static void main(String[] args) throws Exception {        // 创建Httpclient对象        CloseableHttpClient httpclient = HttpClients.createDefault();        // 创建http POST请求        HttpPost httpPost = new HttpPost("http://www.oschina.net/");        CloseableHttpResponse response = null;        try {            // 执行请求            response = httpclient.execute(httpPost);            // 判断返回状态是否为200            if (response.getStatusLine().getStatusCode() == 200) {                String content = EntityUtils.toString(response.getEntity(), "UTF-8");                System.out.println(content);            }        } finally {            if (response != null) {                response.close();            }            httpclient.close();        }    }}

dopost有参请求

package cn.itcast.httpclient;import java.util.ArrayList;import java.util.List;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.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;public class DoPOSTParam {    public static void main(String[] args) throws Exception {        // 创建Httpclient对象        CloseableHttpClient httpclient = HttpClients.createDefault();        // 创建http POST请求        HttpPost httpPost = new HttpPost("http://www.oschina.net/search");        // 设置2个post参数，一个是scope、一个是q        List<NameValuePair> parameters = new ArrayList<NameValuePair>(0);        parameters.add(new BasicNameValuePair("scope", "project"));        parameters.add(new BasicNameValuePair("q", "java"));        // 构造一个form表单式的实体        UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters);        // 将请求实体设置到httpPost对象中        httpPost.setEntity(formEntity);        CloseableHttpResponse response = null;        try {            // 执行请求            response = httpclient.execute(httpPost);            // 判断返回状态是否为200            if (response.getStatusLine().getStatusCode() == 200) {                String content = EntityUtils.toString(response.getEntity(), "UTF-8");                System.out.println(content);            }        } finally {            if (response != null) {                response.close();            }            httpclient.close();        }    }}

阅读全文

0 0