diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CashApi.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CashApi.java
index 30896849..cb587710 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CashApi.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CashApi.java
@@ -155,7 +155,7 @@ public class CashApi {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/mch_pay.php?chapter=14_1">企业付款</a>
 	 * @throws WeixinException
 	 */
-	public MPPaymentResult mpPayment(File caFile, MPPayment mpPayment)
+	public MPPaymentResult mchPayment(File caFile, MPPayment mpPayment)
 			throws WeixinException {
 		JSONObject obj = (JSONObject) JSON.toJSON(mpPayment);
 		obj.put("nonce_str", RandomUtil.generateString(16));
@@ -207,7 +207,7 @@ public class CashApi {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/mch_pay.php?chapter=14_3">企业付款查询</a>
 	 * @throws WeixinException
 	 */
-	public MPPaymentRecord mpPaymentQuery(File caFile, String outTradeNo)
+	public MPPaymentRecord mchPaymentQuery(File caFile, String outTradeNo)
 			throws WeixinException {
 		JSONObject obj = new JSONObject();
 		obj.put("nonce_str", RandomUtil.generateString(16));
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/WeixinPayProxy.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/WeixinPayProxy.java
index f761896e..f53bd50e 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/WeixinPayProxy.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/WeixinPayProxy.java
@@ -448,7 +448,7 @@ public class WeixinPayProxy {
 	 */
 	public MPPaymentResult mpPayment(File caFile, MPPayment mpPayment)
 			throws WeixinException {
-		return cashApi.mpPayment(caFile, mpPayment);
+		return cashApi.mchPayment(caFile, mpPayment);
 	}
 
 	/**
@@ -458,7 +458,7 @@ public class WeixinPayProxy {
 	 */
 	public MPPaymentResult mpPayment(MPPayment mpPayment)
 			throws WeixinException {
-		return cashApi.mpPayment(DEFAULT_CA_FILE, mpPayment);
+		return cashApi.mchPayment(DEFAULT_CA_FILE, mpPayment);
 	}
 
 	/**
@@ -477,7 +477,7 @@ public class WeixinPayProxy {
 	 */
 	public MPPaymentRecord mpPaymentQuery(File caFile, String outTradeNo)
 			throws WeixinException {
-		return cashApi.mpPaymentQuery(caFile, outTradeNo);
+		return cashApi.mchPaymentQuery(caFile, outTradeNo);
 	}
 
 	/**
@@ -487,6 +487,6 @@ public class WeixinPayProxy {
 	 */
 	public MPPaymentRecord mpPaymentQuery(String outTradeNo)
 			throws WeixinException {
-		return cashApi.mpPaymentQuery(DEFAULT_CA_FILE, outTradeNo);
+		return cashApi.mchPaymentQuery(DEFAULT_CA_FILE, outTradeNo);
 	}
 }
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/MPPaymentRecord.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/MPPaymentRecord.java
index 9575aada..c88a13e2 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/MPPaymentRecord.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/MPPaymentRecord.java
@@ -53,6 +53,7 @@ public class MPPaymentRecord extends ApiResult {
 	/**
 	 * 收款用户openid
 	 */
+	@XmlElement(name = "openid")
 	private String openid;
 	/**
 	 * 收款用户姓名
@@ -83,6 +84,7 @@ public class MPPaymentRecord extends ApiResult {
 	/**
 	 * 企业付款描述信息
 	 */
+	@XmlElement(name = "desc")
 	private String desc;
 	/**
 	 * 实名验证结果 PASS:通过 FAILED:不通过
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/util/ObjectId.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/util/ObjectId.java
index ccdd95b4..fcdf847c 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/util/ObjectId.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/util/ObjectId.java
@@ -274,7 +274,6 @@ public class ObjectId implements Comparable<ObjectId>, java.io.Serializable {
 
 	private static final int _genmachine;
 	static {
-
 		try {
 			// build a 2-byte machine piece based on NICs info
 			int machinePiece;
diff --git a/weixin4j-mp/src/main/java/com/foxinmy/weixin4j/mp/api/MediaApi.java b/weixin4j-mp/src/main/java/com/foxinmy/weixin4j/mp/api/MediaApi.java
index 218ca1e8..3c5b8fc7 100644
--- a/weixin4j-mp/src/main/java/com/foxinmy/weixin4j/mp/api/MediaApi.java
+++ b/weixin4j-mp/src/main/java/com/foxinmy/weixin4j/mp/api/MediaApi.java
@@ -107,7 +107,7 @@ public class MediaApi extends MpApi {
 	 */
 	public String uploadMedia(InputStream is, MediaType mediaType,
 			boolean isMaterial) throws WeixinException {
-		if (mediaType.equals(MediaType.video.name()) && isMaterial) {
+		if (mediaType == MediaType.video && isMaterial) {
 			throw new WeixinException(
 					"please invoke uploadMaterialVideo method");
 		}
@@ -133,7 +133,7 @@ public class MediaApi extends MpApi {
 								.toHexString())));
 			}
 		} catch (UnsupportedEncodingException e) {
-			; // ignore
+			throw new WeixinException(e);
 		} finally {
 			try {
 				is.close();