update book code

2025-08-12 02:16:48 +08:00 · 2015-03-03 12:25:25 -05:00
parent b8c82ba4e5
commit eab1d98ba8
465 changed files with 15392 additions and 1572 deletions
--- a/eBook/examples/chapter_20/helloapp/app.yaml
+++ b/eBook/examples/chapter_20/helloapp/app.yaml
@@ -0,0 +1,8 @@
+application: helloworld
+version: 1
+runtime: go
+api_version: 3
+
+handlers:
+- url: /.*
+  script: _go_app
--- a/eBook/examples/chapter_20/helloapp/hello/helloworld2_version1.go
+++ b/eBook/examples/chapter_20/helloapp/hello/helloworld2_version1.go
@@ -0,0 +1,14 @@
+package hello
+
+import (
+    "fmt"
+    "net/http"
+)
+
+func init() {
+    http.HandleFunc("/", handler)
+}
+
+func handler(w http.ResponseWriter, r *http.Request) {
+    fmt.Fprint(w, "Hello, world!")
+}
--- a/eBook/examples/chapter_20/helloapp/hello/helloworld2_version2.go
+++ b/eBook/examples/chapter_20/helloapp/hello/helloworld2_version2.go
@@ -0,0 +1,28 @@
+package hello
+
+import (
+    "appengine"
+    "appengine/user"
+    "fmt"
+    "net/http"
+)
+
+func init() {
+    http.HandleFunc("/", handler)
+}
+
+func handler(w http.ResponseWriter, r *http.Request) {
+    c := appengine.NewContext(r)
+    u := user.Current(c)
+    if u == nil {
+        url, err := user.LoginURL(c, r.URL.String())
+        if err != nil {
+            http.Error(w, err.String(), http.StatusInternalServerError)
+            return
+        }
+        w.Header().Set("Location", url)
+        w.WriteHeader(http.StatusFound)
+        return
+    }
+    fmt.Fprintf(w, "Hello, %v!", u)
+}
--- a/eBook/examples/chapter_20/helloapp/hello/helloworld2_version3.go
+++ b/eBook/examples/chapter_20/helloapp/hello/helloworld2_version3.go
@@ -0,0 +1,46 @@
+package hello
+
+import (
+    "fmt"
+    "net/http"
+    "template"
+)
+
+const guestbookForm = `
+<html>
+  <body>
+    <form action="/sign" method="post">
+      <div><textarea name="content" rows="3" cols="60"></textarea></div>
+      <div><input type="submit" value="Sign Guestbook"></div>
+    </form>
+  </body>
+</html>
+`
+const signTemplateHTML = `
+<html>
+  <body>
+    <p>You wrote:</p>
+    <pre>{{html .}}</pre>
+  </body>
+</html>
+`
+var signTemplate = template.Must(template.New("sign").Parse(signTemplateHTML))
+
+func init() {
+    http.HandleFunc("/", root)
+    http.HandleFunc("/sign", sign)
+}
+
+func root(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/html")
+    fmt.Fprint(w, guestbookForm)
+}
+
+func sign(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/html")
+    err := signTemplate.Execute(w, r.FormValue("content"))
+    if err != nil {
+        http.Error(w, err.String(), http.StatusInternalServerError)
+    }
+}
+
--- a/eBook/examples/chapter_20/helloapp/hello/helloworld2_version4.go
+++ b/eBook/examples/chapter_20/helloapp/hello/helloworld2_version4.go
@@ -0,0 +1,72 @@
+package hello
+
+import (
+	"appengine"
+	"appengine/datastore"
+	"appengine/user"
+	"net/http"
+	"template"
+	"time"
+)
+
+const guestbookTemplateHTML = `
+<html>
+  <body>
+    {{range .}}
+      {{with .Author}}
+        <p><b>{{html .}}</b> wrote:</p>
+      {{else}}
+        <p>An anonymous person wrote:</p>
+      {{end}}
+      <pre>{{html .Content}}</pre>
+      <pre>{{html .Date}}</pre>
+    {{end}}
+    <form action="/sign" method="post">
+      <div><textarea name="content" rows="3" cols="60"></textarea></div>
+      <div><input type="submit" value="Sign Guestbook"></div>
+    </form>
+  </body>
+</html>
+`
+var guestbookTemplate = template.Must(template.New("book").Parse(guestbookTemplateHTML))
+
+type Greeting struct {
+	Author  string
+	Content string
+	Date    datastore.Time
+}
+
+func init() {
+	http.HandleFunc("/", root)
+	http.HandleFunc("/sign", sign)
+}
+
+func root(w http.ResponseWriter, r *http.Request) {
+	c := appengine.NewContext(r)
+	q := datastore.NewQuery("Greeting").Order("-Date").Limit(10)
+	greetings := make([]Greeting, 0, 10)
+	if _, err := q.GetAll(c, &greetings); err != nil {
+		http.Error(w, err.String(), http.StatusInternalServerError)
+		return
+	}
+	if err := guestbookTemplate.Execute(w, greetings); err != nil {
+		http.Error(w, err.String(), http.StatusInternalServerError)
+	}
+}
+
+func sign(w http.ResponseWriter, r *http.Request) {
+	c := appengine.NewContext(r)
+	g := Greeting{
+		Content: r.FormValue("content"),
+		Date:    datastore.SecondsToTime(time.Seconds()),
+	}
+	if u := user.Current(c); u != nil {
+		g.Author = u.String()
+	}
+	_, err := datastore.Put(c, datastore.NewIncompleteKey(c, "Greeting", nil), &g)
+	if err != nil {
+		http.Error(w, err.String(), http.StatusInternalServerError)
+		return
+	}
+	http.Redirect(w, r, "/", http.StatusFound)
+}
--- a/eBook/examples/chapter_20/helloworld.go
+++ b/eBook/examples/chapter_20/helloworld.go
@@ -0,0 +1,16 @@
+// helloworld.go
+package helloworld
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func init() {
+	http.HandleFunc("/", handle)
+}
+
+func handle(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprint(w, "<html><body>Hello, World! 세상아 안녕!! </body></html>")
+}
+