From baf216e1675df21daf66e4b9e904e13116f09a35 Mon Sep 17 00:00:00 2001
From: Bo-Yi Wu <appleboy.tw@gmail.com>
Date: Tue, 4 Jul 2017 03:12:29 -0500
Subject: [PATCH] add error check. (#972)

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
---
 examples/upload-file/multiple/main.go | 18 +++++++++++++++---
 examples/upload-file/single/main.go   | 18 +++++++++++++++---
 2 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/examples/upload-file/multiple/main.go b/examples/upload-file/multiple/main.go
index 2f4e9b52..22588348 100644
--- a/examples/upload-file/multiple/main.go
+++ b/examples/upload-file/multiple/main.go
@@ -17,16 +17,28 @@ func main() {
 		email := c.PostForm("email")
 
 		// Multipart form
-		form, _ := c.MultipartForm()
+		form, err := c.MultipartForm()
+		if err != nil {
+			c.String(http.StatusBadRequest, fmt.Sprintf("get form err: %s", err.Error()))
+			return
+		}
 		files := form.File["files"]
 
 		for _, file := range files {
 			// Source
-			src, _ := file.Open()
+			src, err := file.Open()
+			if err != nil {
+				c.String(http.StatusBadRequest, fmt.Sprintf("file open err: %s", err.Error()))
+				return
+			}
 			defer src.Close()
 
 			// Destination
-			dst, _ := os.Create(file.Filename)
+			dst, err := os.Create(file.Filename)
+			if err != nil {
+				c.String(http.StatusBadRequest, fmt.Sprintf("Create file err: %s", err.Error()))
+				return
+			}
 			defer dst.Close()
 
 			// Copy
diff --git a/examples/upload-file/single/main.go b/examples/upload-file/single/main.go
index 9acf5009..1e9596cb 100644
--- a/examples/upload-file/single/main.go
+++ b/examples/upload-file/single/main.go
@@ -17,12 +17,24 @@ func main() {
 		email := c.PostForm("email")
 
 		// Source
-		file, _ := c.FormFile("file")
-		src, _ := file.Open()
+		file, err := c.FormFile("file")
+		if err != nil {
+			c.String(http.StatusBadRequest, fmt.Sprintf("get form err: %s", err.Error()))
+			return
+		}
+		src, err := file.Open()
+		if err != nil {
+			c.String(http.StatusBadRequest, fmt.Sprintf("file open err: %s", err.Error()))
+			return
+		}
 		defer src.Close()
 
 		// Destination
-		dst, _ := os.Create(file.Filename)
+		dst, err := os.Create(file.Filename)
+		if err != nil {
+			c.String(http.StatusBadRequest, fmt.Sprintf("Create file err: %s", err.Error()))
+			return
+		}
 		defer dst.Close()
 
 		// Copy