content: package com.soecode.wxtools.util.http;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import org.apache.http.Header;
  import org.apache.http.client.ClientProtocolException;
  import org.apache.http.client.methods.CloseableHttpResponse;
  import org.apache.http.client.methods.HttpPost;
  import org.apache.http.entity.ContentType;
  import org.apache.http.entity.StringEntity;
  import org.apache.http.impl.client.CloseableHttpClient;
  
  import com.soecode.wxtools.bean.result.WxError;
  import com.soecode.wxtools.exception.WxErrorException;
  import com.soecode.wxtools.util.StringUtils;
  import com.soecode.wxtools.util.file.FileUtils;
  
  public class MediaDownloadPostRequestExecutor implements RequestExecutor<File, String> {
  
  	private File materialDirFile;
  
  	public MediaDownloadPostRequestExecutor() {
  		super();
  	}
  
  	public MediaDownloadPostRequestExecutor(File materialDirFile) {
  		super();
  		this.materialDirFile = materialDirFile;
  	}
  
  	@Override
  	public File execute(CloseableHttpClient httpclient, String uri, String params)
  			throws WxErrorException, ClientProtocolException, IOException {
  		HttpPost httpPost = new HttpPost(uri);
  
  		if (params != null) {
  			httpPost.setEntity(new StringEntity(params,"UTF-8"));
  		}
  
  		try (CloseableHttpResponse response = httpclient.execute(httpPost)) {
  			Header[] contentTypeHeader = response.getHeaders("Content-Type");
  			if (contentTypeHeader != null && contentTypeHeader.length > 0) {
  				if (ContentType.TEXT_PLAIN.getMimeType().equals(contentTypeHeader[0].getValue())) {
  					String responseContent = Utf8ResponseHandler.INSTANCE.handleResponse(response);
  					throw new WxErrorException(WxError.fromJson(responseContent));
  				}
  			}
  			InputStream inputStream = InputStreamResponseHandler.INSTANCE.handleResponse(response);
  			String fileName = getFileName(response);
  			if (StringUtils.isBlank(fileName)) {
  				return null;
  			}
  			String[] name_ext = fileName.split("\\.");
  			File localFile = FileUtils.createMaterialFile(inputStream, name_ext[0], name_ext[name_ext.length-1], materialDirFile);
  			return localFile;
  		}
  	}
  
  	protected String getFileName(CloseableHttpResponse response) {
  		Header[] contentDispositionHeader = response.getHeaders("Content-disposition");
  		Pattern p = Pattern.compile(".*filename=\"(.*)\"");
  		Matcher m = p.matcher(contentDispositionHeader[0].getValue());
  		m.matches();
  		String fileName = m.group(1);
  		return fileName;
  	}
  
  }
  