diff --git a/README.md b/README.md
new file mode 100644
index 0000000..433b826
--- /dev/null
+++ b/README.md
@@ -0,0 +1,44 @@
+if (0>=stock
+		&&"1".equals(rsrvTxt9)
+		&&null!=price1&&!price1.equals("")
+		&&null!=price2&&!price2.equals("")
+		&&null!=promoDateTo&&!promoDateTo.equals("")
+		&&null!=promoDateFrom&&!promoDateFrom.equals("")
+		&&((Long.valueOf(promoDateTo)-Long.valueOf(promoDateFrom))>=7776000000L)) {
+	return "缺货-长期促销"; 
+} else if (0>=stock
+		&&"1".equals(rsrvTxt9)
+		&&null!=price1&&!price1.equals("")
+		&&null!=price2&&!price2.equals("")
+		&&null!=promoDateTo&&!promoDateTo.equals("")
+		&&null!=promoDateFrom&&!promoDateFrom.equals("")
+		&&((Long.valueOf(promoDateTo)-Long.valueOf(promoDateFrom))<7776000000L)) {
+	return "缺货-降价"; 
+} else if (0>=stock
+		&&"1".equals(rsrvTxt9)
+		&&null!=promoDescription&&!promoDescription.equals("")
+		&&(-1!=promoDescription.indexOf("多")||-1!=promoDescription.indexOf("满"))) {
+	return "缺货-多买多省"; 
+} else if ("1".equals(rsrvTxt9)
+		&&null!=price1&&!price1.equals("")
+		&&null!=price2&&!price2.equals("")
+		&&null!=promoDateTo&&!promoDateTo.equals("")
+		&&null!=promoDateFrom&&!promoDateFrom.equals("")
+		&&((Long.valueOf(promoDateTo)-Long.valueOf(promoDateFrom))>=7776000000L)) {
+	return "长期促销"; 
+} else if ("1".equals(rsrvTxt9)
+		&&null!=price1&&!price1.equals("")
+		&&null!=price2&&!price2.equals("")
+		&&null!=promoDateTo&&!promoDateTo.equals("")
+		&&null!=promoDateFrom&&!promoDateFrom.equals("")
+		&&((Long.valueOf(promoDateTo)-Long.valueOf(promoDateFrom))<7776000000L)) {
+	return "降价"; 
+}  else if ("1".equals(rsrvTxt9)
+		&&null!=promoDescription&&!promoDescription.equals("")
+		&&(-1!=promoDescription.indexOf("多")||-1!=promoDescription.indexOf("满"))) {
+	return "多买多省"; 
+} else if (0>=stock) {
+	return "缺货-普通"; 
+} else {
+	return "普通"; 
+}