update go web example

Sitrone · Sitrone · commit 48581f322fc4 · 2019-02-23T21:05:24.000+08:00
diff --git a/goweb/go.mod b/goweb/go.mod
@@ -1 +1 @@
-module goweb
+module example/goweb
diff --git a/goweb/hello.txt b/goweb/hello.txt
@@ -0,0 +1,3 @@
+                        
+        123
+        12312
diff --git a/goweb/main.go b/goweb/main.go
@@ -5,15 +5,17 @@ import (
 	"fmt"
 	"html/template"
 	"io/ioutil"
+	"log"
 	"net/http"
 	"regexp"
 )
 
+// 用法， 输入 http://localhost:18080/view/hello, 出现hello为title的页面编辑
 func main() {
 	http.HandleFunc("/view/", viewHandler)
 	http.HandleFunc("/edit/", editHandler)
 	http.HandleFunc("/save/", saveHandler)
-	http.ListenAndServe(":18080", nil)
+	log.Fatal(http.ListenAndServe(":18080", nil))
 }
 
 type Page struct {
@@ -52,7 +54,11 @@ func handler(w http.ResponseWriter, r *http.Request) {
 }
 
 func viewHandler(w http.ResponseWriter, r *http.Request) {
-	title, _ := getTitle(w, r)
+	title, err := getTitle(w, r)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
 	p, err := loadPage(title)
 	if err != nil {
 		http.Redirect(w, r, "/edit/"+title, http.StatusFound)
@@ -62,7 +68,11 @@ func viewHandler(w http.ResponseWriter, r *http.Request) {
 }
 
 func editHandler(w http.ResponseWriter, r *http.Request) {
-	title, _ := getTitle(w, r)
+	title, err := getTitle(w, r)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
 	p, err := loadPage(title)
 	if err != nil {
 		p = &Page{Title: title}
@@ -71,10 +81,14 @@ func editHandler(w http.ResponseWriter, r *http.Request) {
 }
 
 func saveHandler(w http.ResponseWriter, r *http.Request) {
-	title, _ := getTitle(w, r)
+	title, err := getTitle(w, r)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
 	body := r.FormValue("body")
 	p := &Page{Title: title, Body: []byte(body)}
-	err := p.savePage()
+	err = p.savePage()
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
diff --git a/goweb/util.go b/goweb/util.go
@@ -0,0 +1 @@
+package main
diff --git a/goweb/util_test.go b/goweb/util_test.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestHello(t *testing.T) {
+	ints := []int{1, 2, 4}
+	for k, v := range ints {
+		fmt.Println(&k, &v)
+	}
+
+	for k, v := range ints[:] {
+		fmt.Println(&k, &v)
+	}
+
+	for i := 0; i < len(ints); i++ {
+		fmt.Println(&ints[i])
+	}
+
+	ages := map[string]int{"张三": 15, "李四": 20, "王武": 36}
+
+	for name, age := range ages {
+		fmt.Println(&name, &age)
+	}
+}
diff --git a/goweb/view.html b/goweb/view.html
@@ -1,5 +1,5 @@
 <h1> {{.Title}} </h1>
 
-<p> [<a href="/edit/{{.Title}}">edit</a>] </p>
+<div> body is: {{printf "%s" .Body}} </div>
 
-<div> {{printf "%s" .Body}} </div>
+<p> [<a href="/edit/{{.Title}}">edit</a>] </p>
