HttpClient下载文件

HttpClient下载文件

import org.springframework.util.FileCopyUtils;
import javax.servlet.http.HttpServletResponse;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;


HttpServletResponse resp;
CloseableHttpClient httpclient = HttpClients.createDefault();
String url="";
HttpGet httpGet = new HttpGet(url);
String sessionStr="";
httpGet.addHeader("Cookie", "SESSION=" + sessionStr);
CloseableHttpResponse response = httpclient.execute(httpGet);
resp.setContentType(response.getEntity().getContentType().getValue());
String srcString = response.getHeaders("Content-disposition")[0].getValue();
resp.setHeader("Content-disposition", srcString);
resp.setHeader("Content-Length", response.getHeaders("Content-Length")[0].getValue());
FileCopyUtils.copy(response.getEntity().getContent(), resp.getOutputStream());