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 cb587710..cd76523b 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
@@ -1,7 +1,5 @@
 package com.foxinmy.weixin4j.api;
 
-import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.HashMap;
@@ -48,7 +46,7 @@ public class CashApi {
 	/**
 	 * 发放红包 企业向微信用户个人发现金红包
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param redpacket
 	 *            红包信息
@@ -59,7 +57,7 @@ public class CashApi {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/cash_coupon.php?chapter=13_5">发放红包接口说明</a>
 	 * @throws WeixinException
 	 */
-	public RedpacketSendResult sendRedpack(File caFile, Redpacket redpacket)
+	public RedpacketSendResult sendRedpack(InputStream ca, Redpacket redpacket)
 			throws WeixinException {
 		JSONObject obj = (JSONObject) JSON.toJSON(redpacket);
 		obj.put("nonce_str", RandomUtil.generateString(16));
@@ -70,16 +68,10 @@ public class CashApi {
 		obj.put("sign", sign);
 		String param = XmlStream.map2xml(obj);
 		WeixinResponse response = null;
-		InputStream ca = null;
 		try {
-			ca = new FileInputStream(caFile);
 			SSLHttpClinet request = new SSLHttpClinet(weixinAccount.getMchId(),
 					ca);
 			response = request.post(PayURLConsts.MCH_REDPACKSEND_URL, param);
-		} catch (WeixinException e) {
-			throw e;
-		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
 		} finally {
 			if (ca != null) {
 				try {
@@ -96,7 +88,7 @@ public class CashApi {
 	/**
 	 * 查询红包记录
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param outTradeNo
 	 *            商户发放红包的商户订单号
@@ -106,7 +98,7 @@ public class CashApi {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/cash_coupon.php?chapter=13_6">查询红包接口说明</a>
 	 * @throws WeixinException
 	 */
-	public RedpacketRecord queryRedpack(File caFile, String outTradeNo)
+	public RedpacketRecord queryRedpack(InputStream ca, String outTradeNo)
 			throws WeixinException {
 		Map<String, String> para = new HashMap<String, String>();
 		para.put("nonce_str", RandomUtil.generateString(16));
@@ -118,16 +110,10 @@ public class CashApi {
 		para.put("sign", sign);
 		String param = XmlStream.map2xml(para);
 		WeixinResponse response = null;
-		InputStream ca = null;
 		try {
-			ca = new FileInputStream(caFile);
 			SSLHttpClinet request = new SSLHttpClinet(weixinAccount.getMchId(),
 					ca);
 			response = request.post(PayURLConsts.MCH_REDPACKQUERY_URL, param);
-		} catch (WeixinException e) {
-			throw e;
-		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
 		} finally {
 			if (ca != null) {
 				try {
@@ -144,7 +130,7 @@ public class CashApi {
 	/**
 	 * 企业付款 实现企业向个人付款，针对部分有开发能力的商户， 提供通过API完成企业付款的功能。 比如目前的保险行业向客户退保、给付、理赔。
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param mpPayment
 	 *            付款信息
@@ -155,7 +141,7 @@ 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 mchPayment(File caFile, MPPayment mpPayment)
+	public MPPaymentResult mchPayment(InputStream ca, MPPayment mpPayment)
 			throws WeixinException {
 		JSONObject obj = (JSONObject) JSON.toJSON(mpPayment);
 		obj.put("nonce_str", RandomUtil.generateString(16));
@@ -167,16 +153,10 @@ public class CashApi {
 		obj.put("sign", sign);
 		String param = XmlStream.map2xml(obj);
 		WeixinResponse response = null;
-		InputStream ca = null;
 		try {
-			ca = new FileInputStream(caFile);
 			SSLHttpClinet request = new SSLHttpClinet(weixinAccount.getMchId(),
 					ca);
 			response = request.post(PayURLConsts.MCH_ENPAYMENT_URL, param);
-		} catch (WeixinException e) {
-			throw e;
-		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
 		} finally {
 			if (ca != null) {
 				try {
@@ -197,7 +177,7 @@ public class CashApi {
 	/**
 	 * 企业付款查询 用于商户的企业付款操作进行结果查询，返回付款操作详细结果
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param outTradeNo
 	 *            商户调用企业付款API时使用的商户订单号
@@ -207,7 +187,7 @@ 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 mchPaymentQuery(File caFile, String outTradeNo)
+	public MPPaymentRecord mchPaymentQuery(InputStream ca, String outTradeNo)
 			throws WeixinException {
 		JSONObject obj = new JSONObject();
 		obj.put("nonce_str", RandomUtil.generateString(16));
@@ -218,16 +198,10 @@ public class CashApi {
 		obj.put("sign", sign);
 		String param = XmlStream.map2xml(obj);
 		WeixinResponse response = null;
-		InputStream ca = null;
 		try {
-			ca = new FileInputStream(caFile);
 			SSLHttpClinet request = new SSLHttpClinet(weixinAccount.getMchId(),
 					ca);
 			response = request.post(PayURLConsts.MCH_ENPAYQUERY_URL, param);
-		} catch (WeixinException e) {
-			throw e;
-		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
 		} finally {
 			if (ca != null) {
 				try {
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CouponApi.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CouponApi.java
index 2f87569c..b5fe4aae 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CouponApi.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/CouponApi.java
@@ -1,7 +1,5 @@
 package com.foxinmy.weixin4j.api;
 
-import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.HashMap;
@@ -45,7 +43,7 @@ public class CouponApi {
 	/**
 	 * 发放代金券(需要证书)
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(后缀为*.p12)
 	 * @param couponStockId
 	 *            代金券批次id
@@ -61,7 +59,7 @@ public class CouponApi {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/sp_coupon.php?chapter=12_3">发放代金券接口</a>
 	 * @throws WeixinException
 	 */
-	public CouponResult sendCoupon(File caFile, String couponStockId,
+	public CouponResult sendCoupon(InputStream ca, String couponStockId,
 			String partnerTradeNo, String openId, String opUserId)
 			throws WeixinException {
 		Map<String, String> map = baseMap();
@@ -81,16 +79,10 @@ public class CouponApi {
 		map.put("sign", sign);
 		String param = XmlStream.map2xml(map);
 		WeixinResponse response = null;
-		InputStream ca = null;
 		try {
-			ca = new FileInputStream(caFile);
 			SSLHttpClinet request = new SSLHttpClinet(weixinAccount.getMchId(),
 					ca);
 			response = request.post(PayURLConsts.MCH_COUPONSEND_URL, param);
-		} catch (WeixinException e) {
-			throw e;
-		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
 		} finally {
 			if (ca != null) {
 				try {
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/Pay3Api.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/Pay3Api.java
index dd5e6814..ca98fa8c 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/Pay3Api.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/api/Pay3Api.java
@@ -4,7 +4,6 @@ import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.ByteArrayInputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStream;
@@ -52,7 +51,7 @@ import com.foxinmy.weixin4j.xml.XmlStream;
  * @see <a href="http://pay.weixin.qq.com/wiki/doc/api/index.html">商户平台API</a>
  */
 public class Pay3Api {
-	
+
 	private final WeixinHttpClient weixinClient;
 
 	private final WeixinPayAccount weixinAccount;
@@ -102,7 +101,7 @@ public class Pay3Api {
 	 * ，要采用原来的退款单号。总退款金额不能超过用户实际支付金额。
 	 * </p>
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param idQuery
 	 *            商户系统内部的订单号, transaction_id 、 out_trade_no 二选一,如果同时存在优先级:
@@ -123,14 +122,11 @@ public class Pay3Api {
 	 * @since V3
 	 * @throws WeixinException
 	 */
-	protected RefundResult refundApply(File caFile, IdQuery idQuery,
+	protected RefundResult refundApply(InputStream ca, IdQuery idQuery,
 			String outRefundNo, double totalFee, double refundFee,
 			String opUserId, Map<String, String> mopara) throws WeixinException {
 		WeixinResponse response = null;
-		InputStream ca = null;
 		try {
-			ca = new FileInputStream(caFile);
-
 			Map<String, String> map = baseMap(idQuery);
 			map.put("out_refund_no", outRefundNo);
 			map.put("total_fee", DateUtil.formaFee2Fen(totalFee));
@@ -149,10 +145,6 @@ public class Pay3Api {
 			SSLHttpClinet request = new SSLHttpClinet(weixinAccount.getMchId(),
 					ca);
 			response = request.post(PayURLConsts.MCH_REFUNDAPPLY_URL, param);
-		} catch (WeixinException e) {
-			throw e;
-		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
 		} finally {
 			if (ca != null) {
 				try {
@@ -169,7 +161,7 @@ public class Pay3Api {
 	/**
 	 * 退款申请
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param idQuery
 	 *            商户系统内部的订单号, transaction_id 、 out_trade_no 二选一,如果同时存在优先级:
@@ -184,9 +176,9 @@ public class Pay3Api {
 	 *            货币类型，符合ISO 4217标准的三位字母代码，默认人民币：CNY
 	 * @param opUserId
 	 *            操作员帐号, 默认为商户号
-	 * @see {@link com.foxinmy.weixin4j.api.Pay3Api#refundApply(File, IdQuery, String, double, double, String, Map)}
+	 * @see {@link com.foxinmy.weixin4j.api.Pay3Api#refundApply(InputStream, IdQuery, String, double, double, String, Map)}
 	 */
-	public RefundResult refundApply(File caFile, IdQuery idQuery,
+	public RefundResult refundApply(InputStream ca, IdQuery idQuery,
 			String outRefundNo, double totalFee, double refundFee,
 			CurrencyType refundFeeType, String opUserId) throws WeixinException {
 		Map<String, String> mopara = new HashMap<String, String>();
@@ -194,7 +186,7 @@ public class Pay3Api {
 			refundFeeType = CurrencyType.CNY;
 		}
 		mopara.put("refund_fee_type", refundFeeType.name());
-		return refundApply(caFile, idQuery, outRefundNo, totalFee, refundFee,
+		return refundApply(ca, idQuery, outRefundNo, totalFee, refundFee,
 				opUserId, mopara);
 	}
 
@@ -204,7 +196,7 @@ public class Pay3Api {
 	 * 如需实现相同功能请调用退款接口</font></br> <font
 	 * color="red">调用扣款接口后请勿立即调用撤销,需要等待5秒以上。先调用查单接口,如果没有确切的返回,再调用撤销</font></br>
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param idQuery
 	 *            商户系统内部的订单号, transaction_id 、 out_trade_no 二选一,如果同时存在优先级:
@@ -213,11 +205,9 @@ public class Pay3Api {
 	 * @since V3
 	 * @throws WeixinException
 	 */
-	public ApiResult reverseOrder(File caFile, IdQuery idQuery)
+	public ApiResult reverseOrder(InputStream ca, IdQuery idQuery)
 			throws WeixinException {
-		InputStream ca = null;
 		try {
-			ca = new FileInputStream(caFile);
 			SSLHttpClinet request = new SSLHttpClinet(weixinAccount.getMchId(),
 					ca);
 			Map<String, String> map = baseMap(idQuery);
@@ -229,8 +219,6 @@ public class Pay3Api {
 					PayURLConsts.MCH_ORDERREVERSE_URL, param);
 			return response.getAsObject(new TypeReference<ApiResult>() {
 			});
-		} catch (IOException e) {
-			throw new WeixinException(e.getMessage());
 		} finally {
 			if (ca != null) {
 				try {
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 88f4d943..54f39a95 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
@@ -1,6 +1,9 @@
 package com.foxinmy.weixin4j.payment;
 
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
 import java.util.Date;
 
 import com.alibaba.fastjson.JSON;
@@ -45,7 +48,7 @@ public class WeixinPayProxy {
 	private final CouponApi couponApi;
 	private final CashApi cashApi;
 
-	private final File DEFAULT_CA_FILE;
+	private final String DEFAULT_CA_FILE;
 
 	/**
 	 * 使用weixin4j.properties配置的账号信息
@@ -65,8 +68,8 @@ public class WeixinPayProxy {
 		this.pay3Api = new Pay3Api(weixinAccount);
 		this.couponApi = new CouponApi(weixinAccount);
 		this.cashApi = new CashApi(weixinAccount);
-		this.DEFAULT_CA_FILE = new File(ConfigUtil.getClassPathValue("ca_file",
-				Weixin4jConst.DEFAULT_MEDIA_PATH));
+		this.DEFAULT_CA_FILE = ConfigUtil.getClassPathValue("ca_file",
+				Weixin4jConst.DEFAULT_MEDIA_PATH);
 	}
 
 	/**
@@ -104,7 +107,7 @@ public class WeixinPayProxy {
 	 * ，要采用原来的退款单号。总退款金额不能超过用户实际支付金额。
 	 * </p>
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(后缀为*.p12)
 	 * @param idQuery
 	 *            商户系统内部的订单号, transaction_id 、 out_trade_no 二选一,如果同时存在优先级:
@@ -130,23 +133,27 @@ public class WeixinPayProxy {
 	 * @throws WeixinException
 	 */
 	public com.foxinmy.weixin4j.payment.mch.RefundResult refundApply(
-			File caFile, IdQuery idQuery, String outRefundNo, double totalFee,
-			double refundFee, CurrencyType refundFeeType, String opUserId)
-			throws WeixinException {
-		return pay3Api.refundApply(caFile, idQuery, outRefundNo, totalFee,
+			InputStream ca, IdQuery idQuery, String outRefundNo,
+			double totalFee, double refundFee, CurrencyType refundFeeType,
+			String opUserId) throws WeixinException {
+		return pay3Api.refundApply(ca, idQuery, outRefundNo, totalFee,
 				refundFee, refundFeeType, opUserId);
 	}
 
 	/**
 	 * 退款申请采用properties中配置的ca文件
 	 * 
-	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#refundV3(File, IdQuery, String, double, double,CurrencyType, String)}
+	 * @throws IOException
+	 * 
+	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#refund(InputStream, IdQuery, String, double, double,CurrencyType, String)}
 	 */
 	public com.foxinmy.weixin4j.payment.mch.RefundResult refundApply(
 			IdQuery idQuery, String outRefundNo, double totalFee,
-			double refundFee, String opUserId) throws WeixinException {
-		return pay3Api.refundApply(DEFAULT_CA_FILE, idQuery, outRefundNo,
-				totalFee, refundFee, CurrencyType.CNY, opUserId);
+			double refundFee, String opUserId) throws WeixinException,
+			IOException {
+		return pay3Api.refundApply(new FileInputStream(DEFAULT_CA_FILE),
+				idQuery, outRefundNo, totalFee, refundFee, CurrencyType.CNY,
+				opUserId);
 	}
 
 	/**
@@ -214,9 +221,9 @@ public class WeixinPayProxy {
 	 * @since V3
 	 * @throws WeixinException
 	 */
-	public ApiResult reverseOrder(File caFile, IdQuery idQuery)
+	public ApiResult reverseOrder(InputStream ca, IdQuery idQuery)
 			throws WeixinException {
-		return pay3Api.reverseOrder(caFile, idQuery);
+		return pay3Api.reverseOrder(ca, idQuery);
 	}
 
 	/**
@@ -225,11 +232,14 @@ public class WeixinPayProxy {
 	 * @param idQuery
 	 *            transaction_id、out_trade_no 二选一
 	 * @return 撤销结果
-	 * @see {@link com.foxinmy.weixin4j.mp.WeixinProxy#reverse(File, IdQuery)}
+	 * @see {@link com.foxinmy.weixin4j.mp.WeixinProxy#reverse(InputStream, IdQuery)}
 	 * @throws WeixinException
+	 * @throws IOException
 	 */
-	public ApiResult reverseOrder(IdQuery idQuery) throws WeixinException {
-		return pay3Api.reverseOrder(DEFAULT_CA_FILE, idQuery);
+	public ApiResult reverseOrder(IdQuery idQuery) throws WeixinException,
+			IOException {
+		return pay3Api.reverseOrder(new FileInputStream(DEFAULT_CA_FILE),
+				idQuery);
 	}
 
 	/**
@@ -305,7 +315,7 @@ public class WeixinPayProxy {
 	/**
 	 * 发放代金券(需要证书)
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(后缀为*.p12)
 	 * @param couponStockId
 	 *            代金券批次id
@@ -322,22 +332,22 @@ public class WeixinPayProxy {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/sp_coupon.php?chapter=12_3">发放代金券接口</a>
 	 * @throws WeixinException
 	 */
-	public CouponResult sendCoupon(File caFile, String couponStockId,
+	public CouponResult sendCoupon(InputStream ca, String couponStockId,
 			String partnerTradeNo, String openId, String opUserId)
 			throws WeixinException {
-		return couponApi.sendCoupon(caFile, couponStockId, partnerTradeNo,
-				openId, opUserId);
+		return couponApi.sendCoupon(ca, couponStockId, partnerTradeNo, openId,
+				opUserId);
 	}
 
 	/**
 	 * 发放代金券采用properties中配置的ca文件
 	 * 
-	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#sendCoupon(File, String, String, String, String)}
+	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#sendCoupon(InputStream, String, String, String, String)}
 	 */
 	public CouponResult sendCoupon(String couponStockId, String partnerTradeNo,
-			String openId) throws WeixinException {
-		return couponApi.sendCoupon(DEFAULT_CA_FILE, couponStockId,
-				partnerTradeNo, openId, null);
+			String openId) throws WeixinException, IOException {
+		return couponApi.sendCoupon(new FileInputStream(DEFAULT_CA_FILE),
+				couponStockId, partnerTradeNo, openId, null);
 	}
 
 	/**
@@ -377,7 +387,7 @@ public class WeixinPayProxy {
 	/**
 	 * 发放红包 企业向微信用户个人发现金红包
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param redpacket
 	 *            红包信息
@@ -389,25 +399,26 @@ public class WeixinPayProxy {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/cash_coupon.php?chapter=13_5">红包接口说明</a>
 	 * @throws WeixinException
 	 */
-	public RedpacketSendResult sendRedpack(File caFile, Redpacket redpacket)
+	public RedpacketSendResult sendRedpack(InputStream ca, Redpacket redpacket)
 			throws WeixinException {
-		return cashApi.sendRedpack(caFile, redpacket);
+		return cashApi.sendRedpack(ca, redpacket);
 	}
 
 	/**
 	 * 发放红包采用properties中配置的ca文件
 	 * 
-	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#sendRedpack(File, Redpacket)}
+	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#sendRedpack(InputStream, Redpacket)}
 	 */
 	public RedpacketSendResult sendRedpack(Redpacket redpacket)
-			throws WeixinException {
-		return cashApi.sendRedpack(DEFAULT_CA_FILE, redpacket);
+			throws WeixinException, IOException {
+		return cashApi.sendRedpack(new FileInputStream(DEFAULT_CA_FILE),
+				redpacket);
 	}
 
 	/**
 	 * 查询红包记录
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param outTradeNo
 	 *            商户发放红包的商户订单号
@@ -418,25 +429,26 @@ public class WeixinPayProxy {
 	 *      href="http://pay.weixin.qq.com/wiki/doc/api/cash_coupon.php?chapter=13_6">查询红包接口说明</a>
 	 * @throws WeixinException
 	 */
-	public RedpacketRecord queryRedpack(File caFile, String outTradeNo)
+	public RedpacketRecord queryRedpack(InputStream ca, String outTradeNo)
 			throws WeixinException {
-		return cashApi.queryRedpack(caFile, outTradeNo);
+		return cashApi.queryRedpack(ca, outTradeNo);
 	}
 
 	/**
 	 * 查询红包采用properties中配置的ca文件
 	 * 
-	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#queryRedpack(File,String)}
+	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#queryRedpack(InputStream,String)}
 	 */
 	public RedpacketRecord queryRedpack(String outTradeNo)
-			throws WeixinException {
-		return cashApi.queryRedpack(DEFAULT_CA_FILE, outTradeNo);
+			throws WeixinException, IOException {
+		return cashApi.queryRedpack(new FileInputStream(DEFAULT_CA_FILE),
+				outTradeNo);
 	}
 
 	/**
 	 * 企业付款 实现企业向个人付款，针对部分有开发能力的商户， 提供通过API完成企业付款的功能。 比如目前的保险行业向客户退保、给付、理赔。
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param mpPayment
 	 *            付款信息
@@ -448,25 +460,26 @@ public class WeixinPayProxy {
 	 *      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 mpPayment(InputStream ca, MPPayment mpPayment)
 			throws WeixinException {
-		return cashApi.mchPayment(caFile, mpPayment);
+		return cashApi.mchPayment(ca, mpPayment);
 	}
 
 	/**
 	 * 企业付款采用properties中配置的ca文件
 	 * 
-	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#mpPayment(File, MPPayment)}
+	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#mpPayment(InputStream, MPPayment)}
 	 */
 	public MPPaymentResult mpPayment(MPPayment mpPayment)
-			throws WeixinException {
-		return cashApi.mchPayment(DEFAULT_CA_FILE, mpPayment);
+			throws WeixinException, IOException {
+		return cashApi.mchPayment(new FileInputStream(DEFAULT_CA_FILE),
+				mpPayment);
 	}
 
 	/**
 	 * 企业付款查询 用于商户的企业付款操作进行结果查询，返回付款操作详细结果
 	 * 
-	 * @param caFile
+	 * @param ca
 	 *            证书文件(V3版本后缀为*.p12)
 	 * @param outTradeNo
 	 *            商户调用企业付款API时使用的商户订单号
@@ -477,18 +490,19 @@ public class WeixinPayProxy {
 	 *      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 mpPaymentQuery(InputStream ca, String outTradeNo)
 			throws WeixinException {
-		return cashApi.mchPaymentQuery(caFile, outTradeNo);
+		return cashApi.mchPaymentQuery(ca, outTradeNo);
 	}
 
 	/**
 	 * 企业付款查询采用properties中配置的ca文件
 	 * 
-	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#mpPaymentQuery(File, String)}
+	 * @see {@link com.foxinmy.weixin4j.payment.WeixinPayProxy#mpPaymentQuery(InputStream, String)}
 	 */
 	public MPPaymentRecord mpPaymentQuery(String outTradeNo)
-			throws WeixinException {
-		return cashApi.mchPaymentQuery(DEFAULT_CA_FILE, outTradeNo);
+			throws WeixinException, IOException {
+		return cashApi.mchPaymentQuery(new FileInputStream(DEFAULT_CA_FILE),
+				outTradeNo);
 	}
 }
diff --git a/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CashTest.java b/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CashTest.java
index 00f3f4e4..7e2c2f18 100644
--- a/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CashTest.java
+++ b/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CashTest.java
@@ -1,5 +1,8 @@
 package com.foxinmy.weixin4j.mp.test;
 
+import java.io.FileInputStream;
+import java.io.IOException;
+
 import org.junit.Test;
 
 import com.foxinmy.weixin4j.exception.WeixinException;
@@ -22,7 +25,7 @@ import com.foxinmy.weixin4j.type.MPPaymentCheckNameType;
 public class CashTest extends CouponTest {
 
 	@Test
-	public void sendRedpacket() throws WeixinException {
+	public void sendRedpacket() throws WeixinException, IOException {
 		Redpacket redpacket = new Redpacket("HB001", "无忧钱庄", "无忧钱庄",
 				"oyFLst1bqtuTcxK-ojF8hOGtLQao", 1d);
 		redpacket.setActName("红包测试");
@@ -32,23 +35,26 @@ public class CashTest extends CouponTest {
 		redpacket.setRemark("快来领取红包吧！");
 		redpacket.setTotalNum(1);
 		redpacket.setWishing("来就送钱");
-		RedpacketSendResult result = WEIXINPAY.sendRedpack(caFile, redpacket);
+		RedpacketSendResult result = WEIXINPAY.sendRedpack(new FileInputStream(
+				caFile), redpacket);
 		System.err.println(result);
 	}
 
 	@Test
-	public void queryRedpacket() throws WeixinException {
+	public void queryRedpacket() throws WeixinException, IOException {
 		String outTradeNo = "HB001";
-		RedpacketRecord record = WEIXINPAY.queryRedpack(caFile, outTradeNo);
+		RedpacketRecord record = WEIXINPAY.queryRedpack(new FileInputStream(
+				caFile), outTradeNo);
 		System.err.println(record);
 	}
 
 	@Test
-	public void mpPayment() throws WeixinException {
+	public void mpPayment() throws WeixinException, IOException {
 		MPPayment payment = new MPPayment("MP001",
 				"oyFLst1bqtuTcxK-ojF8hOGtLQao",
 				MPPaymentCheckNameType.NO_CHECK, "企业付款测试", 0.01d, "127.0.0.1");
-		MPPaymentResult result = WEIXINPAY.mpPayment(caFile, payment);
+		MPPaymentResult result = WEIXINPAY.mpPayment(
+				new FileInputStream(caFile), payment);
 		System.err.println(result);
 	}
 }
diff --git a/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CouponTest.java b/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CouponTest.java
index 7232c019..b8af7326 100644
--- a/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CouponTest.java
+++ b/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/CouponTest.java
@@ -1,6 +1,8 @@
 package com.foxinmy.weixin4j.mp.test;
 
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
 import java.util.Date;
 
 import org.junit.Assert;
@@ -34,11 +36,11 @@ public class CouponTest {
 	protected final File caFile = new File("证书文件路径(*.p12)");
 
 	@Test
-	public void sendCoupon() throws WeixinException {
+	public void sendCoupon() throws WeixinException, IOException {
 		String partnerTradeNo = String.format("%s%s%s", ACCOUNT.getMchId(),
 				DateUtil.fortmat2yyyyMMdd(new Date()), "1");
-		CouponResult result = WEIXINPAY.sendCoupon(caFile, "123",
-				partnerTradeNo, "oyFLst1bqtuTcxK-ojF8hOGtLQao", null);
+		CouponResult result = WEIXINPAY.sendCoupon(new FileInputStream(caFile),
+				"123", partnerTradeNo, "oyFLst1bqtuTcxK-ojF8hOGtLQao", null);
 		Assert.assertTrue(result.getRetCode().equalsIgnoreCase(Consts.SUCCESS));
 	}
 
diff --git a/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/PayTest.java b/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/PayTest.java
index a39b29ba..f7fdc838 100644
--- a/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/PayTest.java
+++ b/weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/PayTest.java
@@ -1,6 +1,8 @@
 package com.foxinmy.weixin4j.mp.test;
 
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
 import java.util.Calendar;
 import java.util.Date;
 
@@ -109,13 +111,13 @@ public class PayTest {
 	}
 
 	@Test
-	public void refundV3() throws WeixinException {
+	public void refundV3() throws WeixinException, IOException {
 		File caFile = new File("签名文件如123.p12");
 		IdQuery idQuery = new IdQuery("TT_1427183696238", IdType.TRADENO);
 		com.foxinmy.weixin4j.payment.mch.RefundResult result = PAY3
-				.refundApply(caFile, idQuery,
-						"TT_R" + System.currentTimeMillis(), 0.01d, 0.01d,
-						null, "10020674");
+				.refundApply(new FileInputStream(caFile), idQuery, "TT_R"
+						+ System.currentTimeMillis(), 0.01d, 0.01d, null,
+						"10020674");
 		System.err.println(result);
 		String sign = result.getSign();
 		result.setSign(null);
diff --git a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java
index cdcd0df0..b3838ac0 100644
--- a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java
+++ b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/WeixinProxy.java
@@ -579,8 +579,6 @@ public class WeixinProxy {
 	 * 
 	 * @param code
 	 *            通过员工授权获取到的code，每次员工授权带上的code将不一样，code只能使用一次，5分钟未被使用自动过期
-	 * @param agentid
-	 *            跳转链接时所在的企业应用ID
 	 * @see com.foxinmy.weixin4j.qy.model.User
 	 * @see com.foxinmy.weixin4j.qy.api.UserApi
 	 * @return 成员对象
@@ -592,8 +590,8 @@ public class WeixinProxy {
 	 *      href="http://qydev.weixin.qq.com/wiki/index.php?title=%E6%A0%B9%E6%8D%AEcode%E8%8E%B7%E5%8F%96%E6%88%90%E5%91%98%E4%BF%A1%E6%81%AF">根据code获取成员信息</a>
 	 * @throws WeixinException
 	 */
-	public User getUserByCode(String code, int agentid) throws WeixinException {
-		return userApi.getUserByCode(code, agentid);
+	public User getUserByCode(String code) throws WeixinException {
+		return userApi.getUserByCode(code);
 	}
 
 	/**
@@ -601,9 +599,8 @@ public class WeixinProxy {
 	 * 
 	 * @param code
 	 *            通过员工授权获取到的code，每次员工授权带上的code将不一样，code只能使用一次，5分钟未被使用自动过期
-	 * @param agentid
-	 *            跳转链接时所在的企业应用ID
-	 * @return { "UserId":"USERID", "DeviceId":"DEVICEID" }
+	 * @return { "UserId":"USERID", "DeviceId":"DEVICEID" } or
+	 *         {"OpenId":"OPENID","DeviceId":"DEVICEID"}
 	 * @see com.foxinmy.weixin4j.qy.api.UserApi
 	 * @see <a
 	 *      href="http://qydev.weixin.qq.com/wiki/index.php?title=%E4%BC%81%E4%B8%9A%E8%8E%B7%E5%8F%96code">企业获取code</a>
@@ -611,9 +608,8 @@ public class WeixinProxy {
 	 *      href="http://qydev.weixin.qq.com/wiki/index.php?title=%E6%A0%B9%E6%8D%AEcode%E8%8E%B7%E5%8F%96%E6%88%90%E5%91%98%E4%BF%A1%E6%81%AF">根据code获取成员信息</a>
 	 * @throws WeixinException
 	 */
-	public JSONObject getUserIdByCode(String code, int agentid)
-			throws WeixinException {
-		return userApi.getUserIdByCode(code, agentid);
+	public JSONObject getUserIdByCode(String code) throws WeixinException {
+		return userApi.getUserIdByCode(code);
 	}
 
 	/**
diff --git a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/UserApi.java b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/UserApi.java
index 1772563e..b8ec7cfd 100644
--- a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/UserApi.java
+++ b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/UserApi.java
@@ -156,8 +156,6 @@ public class UserApi extends QyApi {
 	 * 
 	 * @param code
 	 *            通过员工授权获取到的code，每次员工授权带上的code将不一样，code只能使用一次，5分钟未被使用自动过期
-	 * @param agentid
-	 *            跳转链接时所在的企业应用ID
 	 * @see com.foxinmy.weixin4j.qy.model.User
 	 * @see com.foxinmy.weixin4j.qy.api.UserApi
 	 * @return 成员对象
@@ -169,8 +167,8 @@ public class UserApi extends QyApi {
 	 *      href="http://qydev.weixin.qq.com/wiki/index.php?title=%E6%A0%B9%E6%8D%AEcode%E8%8E%B7%E5%8F%96%E6%88%90%E5%91%98%E4%BF%A1%E6%81%AF">根据code获取成员信息</a>
 	 * @throws WeixinException
 	 */
-	public User getUserByCode(String code, int agentid) throws WeixinException {
-		return getUser(getUserIdByCode(code, agentid).getString("UserId"));
+	public User getUserByCode(String code) throws WeixinException {
+		return getUser(getUserIdByCode(code).getString("UserId"));
 	}
 
 	/**
@@ -200,8 +198,6 @@ public class UserApi extends QyApi {
 	 * 
 	 * @param code
 	 *            通过员工授权获取到的code，每次员工授权带上的code将不一样，code只能使用一次，5分钟未被使用自动过期
-	 * @param agentid
-	 *            跳转链接时所在的企业应用ID
 	 * @return { "UserId":"USERID", "DeviceId":"DEVICEID" }
 	 * @see <a
 	 *      href="http://qydev.weixin.qq.com/wiki/index.php?title=%E4%BC%81%E4%B8%9A%E8%8E%B7%E5%8F%96code">企业获取code</a>
@@ -209,12 +205,11 @@ public class UserApi extends QyApi {
 	 *      href="http://qydev.weixin.qq.com/wiki/index.php?title=%E6%A0%B9%E6%8D%AEcode%E8%8E%B7%E5%8F%96%E6%88%90%E5%91%98%E4%BF%A1%E6%81%AF">根据code获取成员信息</a>
 	 * @throws WeixinException
 	 */
-	public JSONObject getUserIdByCode(String code, int agentid)
-			throws WeixinException {
+	public JSONObject getUserIdByCode(String code) throws WeixinException {
 		String user_getid_uri = getRequestUri("user_getid_uri");
 		Token token = tokenHolder.getToken();
 		WeixinResponse response = weixinClient.post(String.format(
-				user_getid_uri, token.getAccessToken(), code, agentid));
+				user_getid_uri, token.getAccessToken(), code));
 		return response.getAsJson();
 	}
 
diff --git a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/weixin.properties b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/weixin.properties
index d847d32f..2a2f8208 100644
--- a/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/weixin.properties
+++ b/weixin4j-qy/src/main/java/com/foxinmy/weixin4j/qy/api/weixin.properties
@@ -20,7 +20,7 @@ user_update_uri={api_base_url}/user/update?access_token=%s
 # \u83b7\u53d6\u6210\u5458\u4fe1\u606f
 user_get_uri={api_base_url}/user/get?access_token=%s&userid=%s
 # code\u83b7\u53d6\u6210\u5458\u4fe1\u606f
-user_getid_uri={api_base_url}/user/getuserinfo?access_token=%s&code=%s&agentid=%d
+user_getid_uri={api_base_url}/user/getuserinfo?access_token=%s&code=%s
 # \u83b7\u53d6\u90e8\u95e8\u6210\u5458
 user_slist_uri={api_base_url}/user/simplelist?access_token=%s&department_id=%d&fetch_child=%d&status=%d
 # \u83b7\u53d6\u90e8\u95e8\u6210\u5458(\u8be6\u60c5)