httplib:fixes network request failed to create an invalid file and automatically created file directory

httplib/httplib.go

@@ -47,9 +47,11 @@ import (
 	"net/http/httputil"
 	"net/url"
 	"os"
+	"path"
 	"strings"
 	"sync"
 	"time"
+
 	"gopkg.in/yaml.v2"
 )
 
@@ -558,12 +560,6 @@ func (b *BeegoHTTPRequest) Bytes() ([]byte, error) {
 // ToFile saves the body data in response to one file.
 // it calls Response inner.
 func (b *BeegoHTTPRequest) ToFile(filename string) error {
-	f, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
 	resp, err := b.getResponse()
 	if err != nil {
 		return err
@@ -572,10 +568,35 @@ func (b *BeegoHTTPRequest) ToFile(filename string) error {
 		return nil
 	}
 	defer resp.Body.Close()
+	err = pathExistAndMkdir(filename)
+	if err != nil {
+		return err
+	}
+	f, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
 	_, err = io.Copy(f, resp.Body)
 	return err
 }
 
+//Check that the file directory exists, there is no automatically created
+func pathExistAndMkdir(filename string) (err error) {
+	filename = path.Dir(filename)
+	_, err = os.Stat(filename)
+	if err == nil {
+		return nil
+	}
+	if os.IsNotExist(err) {
+		err = os.MkdirAll(filename, os.ModePerm)
+		if err == nil {
+			return nil
+		}
+	}
+	return err
+}
+
 // ToJSON returns the map that marshals from the body bytes as json in response .
 // it calls Response inner.
 func (b *BeegoHTTPRequest) ToJSON(v interface{}) error {

httplib/httplib_test.go

@@ -232,6 +232,20 @@ func TestToFile(t *testing.T) {
 	}
 }
 
+func TestToFileDir(t *testing.T) {
+	f := "./files/beego_testfile"
+	req := Get("http://httpbin.org/ip")
+	err := req.ToFile(f)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll("./files")
+	b, err := ioutil.ReadFile(f)
+	if n := strings.Index(string(b), "origin"); n == -1 {
+		t.Fatal(err)
+	}
+}
+
 func TestHeader(t *testing.T) {
 	req := Get("http://httpbin.org/headers")
 	req.Header("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36")