httpclient获取url响应信息Demo

httpclient获取url响应信息Demo，两种方式：

pom.xml

    4.0.0

    dtwave_pro
    com.dtwave.pros
    1.0-SNAPSHOT

    

        
        
            org.apache.httpcomponents
            httpclient
            4.5.3
        

        
            com.alibaba
            fastjson
            1.2.24
        

        
            org.apache.commons
            commons-lang3
            3.8.1
        
        
        
            org.apache.commons
            commons-io
            1.3.2
        

        
        
            org.apache.hive
            hive-exec
            1.2.1
            provided
        

        
        
            junit
            junit
            3.8.1
            test
        

    

    
        
            
                
                    maven-clean-plugin
                    3.0.0
                
                
                
                    maven-resources-plugin
                    3.0.2
                
                
                    maven-compiler-plugin
                    3.7.0
                
                
                    maven-surefire-plugin
                    2.20.1
                
                
                    maven-jar-plugin
                    3.0.2
                
                
                    maven-install-plugin
                    2.5.2
                
                
                    maven-deploy-plugin
                    2.8.2
                
            
        
        
            
                maven-assembly-plugin
                
                    
                    
                    
                        jar-with-dependencies
                    
                
                
                    
                        make-assembly
                        package
                        
                            single
                        
                    
                
            
        
    

get和post请求：

package com.dtwave.duruo;

import org.apache.commons.io.IOUtils;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
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 java.io.IOException;
import java.io.InputStream;

public class HttpClientDemo {

    public static void main(String[] args) {
        System.out.println(doGetMethod("http://www.baidu.com"));
        System.out.println(doPostMethod("http://www.baidu.com"));
    }

    // get请求
    public static String doGetMethod(String url){
        // 获取httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();

        // 创建GET请求
        // String url = "http://www.baidu.com";
        HttpGet hg = new HttpGet(url);
        // 设置参数
        hg.addHeader("Content-Type", "text/html;charset=utf-8");

        String result = null;

        try {
            CloseableHttpResponse response = httpclient.execute(hg);
            InputStream in = response.getEntity().getContent();
            result = IOUtils.toString(in);
            // 关闭流
            in.close();
            response.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result ;
    }

    // post请求方法
    public static String doPostMethod(String url){
        String res = null;
        // 获取httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();
        // 创建POST请求
        // String url = "http://www.baidu.com";
        HttpPost hp = new HttpPost(url);
        hp.addHeader("Content-Type", "text/html;charset=utf-8");

        //
        try {
            CloseableHttpResponse chr = httpclient.execute(hp);
            InputStream in = chr.getEntity().getContent();
            res = IOUtils.toString(in);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return res;
    }
}