key解析支持转义符的处理

tree/generate.go

@@ -108,6 +108,16 @@ func (g *Generate) getKey(startIndex int) (string, int, error) {
 			startIndex++
 			break
 		}
+
+		if charStr == KeywordEscapeSymbol {
+			// 转义符
+			startIndex++
+			if startIndex >= len(g.jsonDataByte) {
+				// 转义符后面没东西了
+				return "", startIndex, errors.New("escape symbol without any data")
+			}
+			charStr = string(g.jsonDataByte[startIndex])
+		}
 		keyCharList = append(keyCharList, charStr)
 		startIndex++
 	}