diff --git a/casdoorsdk/permission.go b/casdoorsdk/permission.go
index f55b33c..e5a42f2 100644
--- a/casdoorsdk/permission.go
+++ b/casdoorsdk/permission.go
@@ -16,6 +16,7 @@ package casdoorsdk
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 )
@@ -109,16 +110,11 @@ func (c *Client) GetPaginationPermissions(p int, pageSize int, queryMap map[stri
 		return nil, 0, fmt.Errorf(response.Msg)
 	}
 
-	bytes, err := json.Marshal(response.Data)
-	if err != nil {
-		return nil, 0, err
+	permissions, ok := response.Data.([]*Permission)
+	if !ok {
+		return nil, 0, errors.New("response data format is incorrect")
 	}
 
-	var permissions []*Permission
-	err = json.Unmarshal(bytes, &permissions)
-	if err != nil {
-		return nil, 0, err
-	}
 	return permissions, int(response.Data2.(float64)), nil
 }
 
diff --git a/casdoorsdk/provider.go b/casdoorsdk/provider.go
index cc1afdc..07faf78 100644
--- a/casdoorsdk/provider.go
+++ b/casdoorsdk/provider.go
@@ -16,6 +16,7 @@ package casdoorsdk
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 )
@@ -124,16 +125,11 @@ func (c *Client) GetPaginationProviders(p int, pageSize int, queryMap map[string
 		return nil, 0, err
 	}
 
-	bytes, err := json.Marshal(response.Data)
-	if err != nil {
-		return nil, 0, err
+	providers, ok := response.Data.([]*Provider)
+	if !ok {
+		return nil, 0, errors.New("response data format is incorrect")
 	}
 
-	var providers []*Provider
-	err = json.Unmarshal(bytes, &providers)
-	if err != nil {
-		return nil, 0, err
-	}
 	return providers, int(response.Data2.(float64)), nil
 }
 
diff --git a/casdoorsdk/record.go b/casdoorsdk/record.go
index d8935e1..03e2c62 100644
--- a/casdoorsdk/record.go
+++ b/casdoorsdk/record.go
@@ -16,6 +16,7 @@ package casdoorsdk
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 )
@@ -101,16 +102,11 @@ func (c *Client) GetPaginationRecords(p int, pageSize int, queryMap map[string]s
 		return nil, 0, err
 	}
 
-	bytes, err := json.Marshal(response.Data)
-	if err != nil {
-		return nil, 0, err
+	records, ok := response.Data.([]*Record)
+	if !ok {
+		return nil, 0, errors.New("response data format is incorrect")
 	}
 
-	var records []*Record
-	err = json.Unmarshal(bytes, &records)
-	if err != nil {
-		return nil, 0, err
-	}
 	return records, int(response.Data2.(float64)), nil
 }
 
diff --git a/casdoorsdk/role.go b/casdoorsdk/role.go
index b3de636..d3138d3 100644
--- a/casdoorsdk/role.go
+++ b/casdoorsdk/role.go
@@ -16,6 +16,7 @@ package casdoorsdk
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 )
@@ -70,16 +71,11 @@ func (c *Client) GetPaginationRoles(p int, pageSize int, queryMap map[string]str
 		return nil, 0, err
 	}
 
-	bytes, err := json.Marshal(response.Data)
-	if err != nil {
-		return nil, 0, err
+	roles, ok := response.Data.([]*Role)
+	if !ok {
+		return nil, 0, errors.New("response data format is incorrect")
 	}
 
-	var roles []*Role
-	err = json.Unmarshal(bytes, &roles)
-	if err != nil {
-		return nil, 0, err
-	}
 	return roles, int(response.Data2.(float64)), nil
 }
 
diff --git a/casdoorsdk/session.go b/casdoorsdk/session.go
index a6f082a..91f9c8e 100644
--- a/casdoorsdk/session.go
+++ b/casdoorsdk/session.go
@@ -16,6 +16,7 @@ package casdoorsdk
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 )
@@ -70,16 +71,11 @@ func (c *Client) GetPaginationSessions(p int, pageSize int, queryMap map[string]
 		return nil, 0, err
 	}
 
-	bytes, err := json.Marshal(response.Data)
-	if err != nil {
-		return nil, 0, err
+	sessions, ok := response.Data.([]*Session)
+	if !ok {
+		return nil, 0, errors.New("response data format is incorrect")
 	}
 
-	var sessions []*Session
-	err = json.Unmarshal(bytes, &sessions)
-	if err != nil {
-		return nil, 0, err
-	}
 	return sessions, int(response.Data2.(float64)), nil
 }
 
diff --git a/casdoorsdk/token.go b/casdoorsdk/token.go
index 06898b9..ea0e015 100644
--- a/casdoorsdk/token.go
+++ b/casdoorsdk/token.go
@@ -120,16 +120,11 @@ func (c *Client) GetTokens(p int, pageSize int) ([]*Token, int, error) {
 		return nil, 0, err
 	}
 
-	bytes, err := json.Marshal(response.Data)
-	if err != nil {
-		return nil, 0, err
+	tokens, ok := response.Data.([]*Token)
+	if !ok {
+		return nil, 0, errors.New("response data format is incorrect")
 	}
 
-	var tokens []*Token
-	err = json.Unmarshal(bytes, &tokens)
-	if err != nil {
-		return nil, 0, err
-	}
 	return tokens, int(response.Data2.(float64)), nil
 }
 
diff --git a/casdoorsdk/user.go b/casdoorsdk/user.go
index abab01d..c253fc4 100644
--- a/casdoorsdk/user.go
+++ b/casdoorsdk/user.go
@@ -16,6 +16,7 @@ package casdoorsdk
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 )
@@ -291,16 +292,11 @@ func (c *Client) GetPaginationUsers(p int, pageSize int, queryMap map[string]str
 		return nil, 0, fmt.Errorf(response.Msg)
 	}
 
-	bytes, err := json.Marshal(response.Data)
-	if err != nil {
-		return nil, 0, err
+	users, ok := response.Data.([]*User)
+	if !ok {
+		return nil, 0, errors.New("response data format is incorrect")
 	}
 
-	var users []*User
-	err = json.Unmarshal(bytes, &users)
-	if err != nil {
-		return nil, 0, err
-	}
 	return users, int(response.Data2.(float64)), nil
 }