修改默认参数逻辑，默认参数为arg0,arg1....

GoMybatis.go

@@ -451,7 +451,8 @@ func buildSql(proxyArg ProxyArg, nodes []ast.Node, sqlBuilder SqlBuilder) (Sessi
 			paramMap[lowerKey] = argInterface
 			paramMap[upperKey] = argInterface
 		} else {
-			paramMap[DefaultOneArg] = argInterface
+			//未命名参数，为arg加参数位置，例如 arg0,arg1,arg2....
+			paramMap[DefaultOneArg+strconv.Itoa(argIndex)] = argInterface
 		}
 	}
 	if customLen == 1 && customIndex != -1 {
@@ -502,7 +503,7 @@ func scanStructArgFields(v reflect.Value, tag *TagArg) map[string]interface{} {
 			structArg[typeValue.Name] = obj
 		}
 	}
-	if tag != nil && parameters[tag.Name]==nil{
+	if tag != nil && parameters[tag.Name] == nil {
 		parameters[tag.Name] = structArg
 	}
 	return parameters

GoMybatisConst.go

@@ -1,4 +1,4 @@
 package GoMybatis
 
-const DefaultOneArg = `[default]`
-
+//默认参数前缀，例如arg0 arg1 arg2 ....
+const DefaultOneArg = `arg`

GoMybatisTempleteDecoder.go

@@ -5,6 +5,7 @@ import (
 	"github.com/zhuxiujia/GoMybatis/lib/github.com/beevik/etree"
 	"github.com/zhuxiujia/GoMybatis/utils"
 	"reflect"
+	"strconv"
 	"strings"
 )
 
@@ -623,7 +624,7 @@ func (it *GoMybatisTempleteDecoder) DecodeCollectionName(method *reflect.StructF
 				var mapperParams = method.Tag.Get("mapperParams")
 				var args = strings.Split(mapperParams, ",")
 				if mapperParams == "" || args == nil || len(args) == 0 || (len(args) == 1 && args[0] == "") {
-					collection = DefaultOneArg
+					collection = DefaultOneArg + strconv.Itoa(i)
 				} else {
 					collection = args[i]
 				}