me.chanjar.weixin.common.util.http.MediaDownloadRequestExecutor Maven / Gradle / Ivy
package me.chanjar.weixin.common.util.http;
import me.chanjar.weixin.common.bean.result.WxError;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.common.util.StringUtils;
import me.chanjar.weixin.common.util.fs.FileUtils;
import org.apache.http.Header;
import org.apache.http.HttpHost;
import org.apache.http.client.ClientProtocolException;
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.entity.ContentType;
import org.apache.http.impl.client.CloseableHttpClient;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* 下载媒体文件请求执行器，请求的参数是String, 返回的结果是File
* @author Daniel Qian
*
*/
public class MediaDownloadRequestExecutor implements RequestExecutor {
private File tmpDirFile;
public MediaDownloadRequestExecutor() {
super();
}
public MediaDownloadRequestExecutor(File tmpDirFile) {
super();
this.tmpDirFile = tmpDirFile;
}
@Override
public File execute(CloseableHttpClient httpclient, HttpHost httpProxy, String uri, String queryParam) throws WxErrorException, ClientProtocolException, IOException {
if (queryParam != null) {
if (uri.indexOf('?') == -1) {
uri += '?';
}
uri += uri.endsWith("?") ? queryParam : '&' + queryParam;
}
HttpGet httpGet = new HttpGet(uri);
if (httpProxy != null) {
RequestConfig config = RequestConfig.custom().setProxy(httpProxy).build();
httpGet.setConfig(config);
}
try (CloseableHttpResponse response = httpclient.execute(httpGet)) {
Header[] contentTypeHeader = response.getHeaders("Content-Type");
if (contentTypeHeader != null && contentTypeHeader.length > 0) {
// 下载媒体文件出错
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);
// 视频文件不支持下载
String fileName = getFileName(response);
if (StringUtils.isBlank(fileName)) {
return null;
}
String[] name_ext = fileName.split("\\.");
File localFile = FileUtils.createTmpFile(inputStream, name_ext[0], name_ext[1], tmpDirFile);
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;
}
}