【重要】主要调整了Pay3Api#refundApply退款参数

weixin4j-mp/src/main/java/com/foxinmy/weixin4j/mp/api/MediaApi.java

@@ -45,6 +45,7 @@ import com.foxinmy.weixin4j.type.MediaType;
 import com.foxinmy.weixin4j.util.FileUtil;
 import com.foxinmy.weixin4j.util.IOUtil;
 import com.foxinmy.weixin4j.util.ObjectId;
+import com.foxinmy.weixin4j.util.RegexUtil;
 import com.foxinmy.weixin4j.util.StringUtil;
 import com.foxinmy.weixin4j.util.Weixin4jConfigUtil;
 import com.foxinmy.weixin4j.util.Weixin4jConst;
@@ -341,8 +342,12 @@ public class MediaApi extends MpApi {
 							.getCode()), jsonResult.getDesc());
 				}
 			}
-			String fileName = String.format("%s.%s", mediaId,
-					contentType.split("/")[1]);
+			String fileName = RegexUtil
+					.regexFileNameFromContentDispositionHeader(disposition);
+			if (StringUtil.isBlank(fileName)) {
+				fileName = String.format("%s.%s", mediaId,
+						contentType.split("/")[1]);
+			}
 			return new MediaDownloadResult(content,
 					ContentType.create(contentType), fileName);
 		} catch (IOException e) {

weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/MediaTest.java

@@ -55,7 +55,7 @@ public class MediaTest extends TokenTest {
 	@Test
 	public void download1() throws WeixinException, IOException {
 		MediaDownloadResult content = mediaApi.downloadMedia(
-				"zloeIROuS3YJFZwugGNM5oGBolqJmU_8FKTUmJwTFbSjfky904S9OPly5Wq0BRn2", true);
+				"V4GvAetzQQjj_ECx1Siqvccgm80a32tk1gRusOBYMk8Uouybl-CwSkGk8w7wKgvI", false);
 		Assert.assertTrue(content != null);
 		System.err.println(content);
 	}