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@@ -52,7 +52,7 @@ public class WxMaXPaySigParams implements Serializable {
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String ak = StringUtils.trimToEmpty(this.appKey);
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final String sigUri = convUrlToSigUri(url);
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final String paySig = calcPaySignature(sigUri, postBody, ak);
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- return paySig;
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+ return paySig.toLowerCase();
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}
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public String calcSig(String postBody) {
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