diff --git a/config/json.go b/config/json.go
index 12b92e7d..7214a686 100644
--- a/config/json.go
+++ b/config/json.go
@@ -151,12 +151,12 @@ func (c *JsonConfigContainer) getData(key string) interface{} {
 		}
 		for _, key := range sectionKey[1:] {
 			if v, ok := curValue.(map[string]interface{}); ok {
-				if v2, ok := v[key]; ok {
-					return v2
+				if curValue, ok = v[key]; !ok {
+					return nil
 				}
 			}
 		}
-		return nil
+		return curValue
 	}
 	if v, ok := c.data[key]; ok {
 		return v
diff --git a/config/xml/xml.go b/config/xml/xml.go
index fbd15190..5345f69c 100644
--- a/config/xml/xml.go
+++ b/config/xml/xml.go
@@ -7,7 +7,7 @@
 // @license     http://github.com/astaxie/beego/blob/master/LICENSE
 //
 // @authors     astaxie
-package config
+package xml
 
 import (
 	"errors"
@@ -24,27 +24,27 @@ import (
 // XmlConfig is a xml config parser and implements Config interface.
 // xml configurations should be included in <config></config> tag.
 // only support key/value pair as <key>value</key> as each item.
-type XMLConfig struct {
-}
+type XMLConfig struct{}
 
 // Parse returns a ConfigContainer with parsed xml config map.
-func (xmls *XMLConfig) Parse(filename string) (config.ConfigContainer, error) {
+func (xc *XMLConfig) Parse(filename string) (config.ConfigContainer, error) {
 	file, err := os.Open(filename)
 	if err != nil {
 		return nil, err
 	}
 	defer file.Close()
-	x := &XMLConfigContainer{
-		data: make(map[string]interface{}),
-	}
+
+	x := &XMLConfigContainer{data: make(map[string]interface{})}
 	content, err := ioutil.ReadAll(file)
 	if err != nil {
 		return nil, err
 	}
+
 	d, err := x2j.DocToMap(string(content))
 	if err != nil {
 		return nil, err
 	}
+
 	x.data = d["config"].(map[string]interface{})
 	return x, nil
 }
diff --git a/config/xml/xml_test.go b/config/xml/xml_test.go
index dac1a527..564d6344 100644
--- a/config/xml/xml_test.go
+++ b/config/xml/xml_test.go
@@ -7,7 +7,7 @@
 // @license     http://github.com/astaxie/beego/blob/master/LICENSE
 //
 // @authors     astaxie
-package config
+package xml
 
 import (
 	"os"
diff --git a/config/yaml/yaml.go b/config/yaml/yaml.go
index 5d2d2b84..e948dae2 100644
--- a/config/yaml/yaml.go
+++ b/config/yaml/yaml.go
@@ -7,7 +7,7 @@
 // @license     http://github.com/astaxie/beego/blob/master/LICENSE
 //
 // @authors     astaxie
-package config
+package yaml
 
 import (
 	"bytes"
@@ -24,39 +24,36 @@ import (
 )
 
 // YAMLConfig is a yaml config parser and implements Config interface.
-type YAMLConfig struct {
-}
+type YAMLConfig struct{}
 
 // Parse returns a ConfigContainer with parsed yaml config map.
-func (yaml *YAMLConfig) Parse(filename string) (config.ConfigContainer, error) {
-	y := &YAMLConfigContainer{
-		data: make(map[string]interface{}),
-	}
+func (yaml *YAMLConfig) Parse(filename string) (y config.ConfigContainer, err error) {
 	cnf, err := ReadYmlReader(filename)
 	if err != nil {
-		return nil, err
+		return
 	}
-	y.data = cnf
-	return y, nil
+	y = &YAMLConfigContainer{
+		data: cnf,
+	}
+	return
 }
 
 // Read yaml file to map.
 // if json like, use json package, unless goyaml2 package.
 func ReadYmlReader(path string) (cnf map[string]interface{}, err error) {
-	err = nil
 	f, err := os.Open(path)
 	if err != nil {
 		return
 	}
 	defer f.Close()
-	err = nil
+
 	buf, err := ioutil.ReadAll(f)
 	if err != nil || len(buf) < 3 {
 		return
 	}
 
 	if string(buf[0:1]) == "{" {
-		log.Println("Look lile a Json, try it")
+		log.Println("Look like a Json, try json umarshal")
 		err = json.Unmarshal(buf, &cnf)
 		if err == nil {
 			log.Println("It is Json Map")
@@ -64,19 +61,19 @@ func ReadYmlReader(path string) (cnf map[string]interface{}, err error) {
 		}
 	}
 
-	_map, _err := goyaml2.Read(bytes.NewBuffer(buf))
-	if _err != nil {
-		log.Println("Goyaml2 ERR>", string(buf), _err)
-		//err = goyaml.Unmarshal(buf, &cnf)
-		err = _err
+	data, err := goyaml2.Read(bytes.NewBuffer(buf))
+	if err != nil {
+		log.Println("Goyaml2 ERR>", string(buf), err)
 		return
 	}
-	if _map == nil {
+
+	if data == nil {
 		log.Println("Goyaml2 output nil? Pls report bug\n" + string(buf))
+		return
 	}
-	cnf, ok := _map.(map[string]interface{})
+	cnf, ok := data.(map[string]interface{})
 	if !ok {
-		log.Println("Not a Map? >> ", string(buf), _map)
+		log.Println("Not a Map? >> ", string(buf), data)
 		cnf = nil
 	}
 	return
diff --git a/config/yaml/yaml_test.go b/config/yaml/yaml_test.go
index ca066c72..d960f501 100644
--- a/config/yaml/yaml_test.go
+++ b/config/yaml/yaml_test.go
@@ -7,7 +7,7 @@
 // @license     http://github.com/astaxie/beego/blob/master/LICENSE
 //
 // @authors     astaxie
-package config
+package yaml
 
 import (
 	"os"