Merge branch 'yunding' of http://120.27.238.55:7000/r/exchange into yunding

Helius

2021-05-12 4b703e146ff26bf7d84ed93b0dbb6acd96e64c4d

 src/main/java/com/xcong/excoin/utils/CoinTypeConvert.java

@@ -47,4 +47,12 @@
                return null;
        }
    }

    public static String convertContractTypeToCoin(String symbol) {
        if (symbol.indexOf("/") > 0) {
            return symbol.substring(0, symbol.indexOf("/"));
        } else {
            return null;
        }
    }
}