如题。
java中使用httpClient批量下载图片，代码如下：
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.io.FileUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.RequestConfig;
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 DownloadPicTest {
/**
* 发送get请求, 下载图片
*
* @param url
* 路径
* @return
*/
public static void httpGetImg(CloseableHttpClient client,String imgUrl,String savePath) {
// 发送get请求
HttpGet request = new HttpGet(imgUrl);
// 设置请求和传输超时时间
RequestConfig requestConfig = RequestConfig.custom()
.setSocketTimeout(50000).setConnectTimeout(50000).build();
//设置请求头
request.setHeader( "User-Agent","Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.79 Safari/537.1" );
request.setConfig(requestConfig);
try {
CloseableHttpResponse response = client.execute(request);
if (HttpStatus.SC_OK == response.getStatusLine().getStatusCode()) {
HttpEntity entity = response.getEntity();
InputStream in = entity.getContent();
FileUtils.copyInputStreamToFile(in, new File(savePath));
System.out.println("下载图片成功:"+imgUrl);
}
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException(e);
} finally {
request.releaseConnection();
}
}
public static void main(String[] args) {
CloseableHttpClient client =null;
try {
client = HttpClients.createDefault();
String url ="https://picsum.photos/300/150/?image=";
String path="f:/11/img";
for(int i=0;i<100;i++){ //下载100张图片
httpGetImg(client,url+i, path+"/"+i+".jpg");
System.out.println("ok");
}
} catch (Exception e) {
e.printStackTrace();
}finally{
if(client!=null){
try {
client.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
pom.xml
<!-- apache io操作通用jar包 -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<!-- httpclient 支持jar -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.5</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.3.5</version>
</dependency>运行截图：
