HttpClient抓取图片

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1. HttpClient抓取图片

pom.xml


  4.0.0
  com.andrew
  HttpClientDemo
  0.0.1-SNAPSHOT
  
      
        org.apache.httpcomponents
        httpclient
        4.5.2
    
    
        commons-io
        commons-io
        2.5
    
  


Demo01.java

package com.andrew.httpClient.chap03;

import java.io.File;
import java.io.InputStream;

import org.apache.commons.io.FileUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

public class Demo01 {
    public static void main(String[] args) throws Exception {
        CloseableHttpClient httpClient = HttpClients.createDefault(); // 创建httpClient实例
        HttpGet httpGet = new HttpGet("http://www.pptbz.com/pptpic/UploadFiles_6909/201203/2012031220134655.jpg"); // 创建httpget实例
        httpGet.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:50.0) Gecko/20100101 Firefox/50.0");
        CloseableHttpResponse response = httpClient.execute(httpGet); // 执行http get请求
        HttpEntity entity = response.getEntity(); // 获取返回实体
        if (entity != null) {
            System.out.println("ContentType:" + entity.getContentType().getValue());
            InputStream inputStream = entity.getContent();
            FileUtils.copyToFile(inputStream, new File("E://chap03demo01.gif"));
        }
        response.close(); // response关闭
        httpClient.close(); // httpClient关闭
    }
}

运行结果：
ContentType:image/jpeg