diff --git a/web/07/labor/loesungen/uebung02/book.go b/web/07/labor/loesungen/uebung02/book.go
new file mode 100644
index 0000000..f72036b
--- /dev/null
+++ b/web/07/labor/loesungen/uebung02/book.go
@@ -0,0 +1,48 @@
+package main
+
+import (
+ "encoding/json"
+ "os"
+)
+
+type Book struct {
+ ID int `json:"id"`
+ Title string `json:"title"`
+ Author string `json:"author"`
+ Read bool `json:"read"`
+}
+
+type Library struct {
+ Books []Book `json:"books"`
+}
+
+func (lib *Library) Add(title, author string) {
+ id := len(lib.Books) + 1
+ lib.Books = append(lib.Books, Book{ID: id, Title: title, Author: author, Read: false})
+}
+
+func (lib *Library) MarkRead(id int) {
+ for i := range lib.Books {
+ if lib.Books[i].ID == id {
+ lib.Books[i].Read = true
+ }
+ }
+}
+
+func (lib *Library) Save(filename string) error {
+ data, err := json.MarshalIndent(lib, "", " ")
+ if err != nil {
+ return err
+ }
+ return os.WriteFile(filename, data, 0644)
+}
+
+func LoadLibrary(filename string) (*Library, error) {
+ data, err := os.ReadFile(filename)
+ if err != nil {
+ return &Library{}, nil
+ }
+ var lib Library
+ err = json.Unmarshal(data, &lib)
+ return &lib, err
+}
diff --git a/web/07/labor/loesungen/uebung02/books.json b/web/07/labor/loesungen/uebung02/books.json
new file mode 100644
index 0000000..882dda5
--- /dev/null
+++ b/web/07/labor/loesungen/uebung02/books.json
@@ -0,0 +1,16 @@
+{
+ "books": [
+ {
+ "id": 1,
+ "title": "Der Steppenwolf",
+ "author": "Hermann Hesse",
+ "read": false
+ },
+ {
+ "id": 2,
+ "title": "Clean Code",
+ "author": "Robert C. Martin",
+ "read": true
+ }
+ ]
+}
\ No newline at end of file
diff --git a/web/07/labor/loesungen/uebung02/main.go b/web/07/labor/loesungen/uebung02/main.go
new file mode 100644
index 0000000..b4ad205
--- /dev/null
+++ b/web/07/labor/loesungen/uebung02/main.go
@@ -0,0 +1,50 @@
+package main
+
+import (
+ "fmt"
+ "os"
+ "strconv"
+)
+
+func main() {
+ if len(os.Args) < 2 {
+ fmt.Println("Usage: add <author> | list | read <id>")
+ return
+ }
+
+ lib, _ := LoadLibrary("books.json")
+
+ switch os.Args[1] {
+ case "add":
+ if len(os.Args) < 4 {
+ fmt.Println("Usage: add <title> <author>")
+ return
+ }
+ lib.Add(os.Args[2], os.Args[3])
+ lib.Save("books.json")
+ fmt.Println("Buch hinzugefügt.")
+
+ case "list":
+ for _, b := range lib.Books {
+ status := " "
+ if b.Read {
+ status = "✓"
+ }
+ fmt.Printf("[%s] %d: \"%s\" by %s\n", status, b.ID, b.Title, b.Author)
+ }
+
+ case "read":
+ if len(os.Args) < 3 {
+ fmt.Println("Geben Sie eine Buch-ID ein.")
+ return
+ }
+ id, err := strconv.Atoi(os.Args[2])
+ if err != nil {
+ fmt.Println("Ungültige ID-Eingabe.")
+ return
+ }
+ lib.MarkRead(id)
+ lib.Save("books.json")
+ fmt.Println("Buch als gelesen markiert.")
+ }
+}
diff --git a/web/07/labor/loesungen/uebung03.go b/web/07/labor/loesungen/uebung03.go
new file mode 100644
index 0000000..e484ebf
--- /dev/null
+++ b/web/07/labor/loesungen/uebung03.go
@@ -0,0 +1,92 @@
+package main
+
+import (
+ "errors"
+ "fmt"
+ "log"
+ "net/http"
+)
+
+type workshopHandler int
+
+func parseCheckboxValue(value string) string {
+ if value == "" || (value != "ja" && value != "on") {
+ return "nein"
+ }
+ return "ja"
+}
+
+func parseRadiobuttonValue(value string) (string, error) {
+ if value == "" || (value != "praesenz" && value != "online") {
+ return "", errors.New("Auswahl nicht erlaubt.")
+ }
+ return value, nil
+}
+
+func (worksh workshopHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+
+ if r.Method != http.MethodPost {
+ http.Error(w, "Nur POST-Anfragen erlaubt", http.StatusMethodNotAllowed)
+ return
+ }
+
+ // Formulardaten parsen und Überprüfen, ob ungültige Formulardaten gesendet wurde
+ if err := r.ParseForm(); err != nil {
+ http.Error(w, "Fehler beim Parsen des Formulars", http.StatusBadRequest)
+ return
+ }
+
+ // Überprüfen, ob leeres Formular gesendet wurde
+ if len(r.PostForm) == 0 {
+ http.Error(w, "Kein Formular gesendet", http.StatusBadRequest)
+ return
+ }
+
+ // Formulardaten auslesen und ggf. überprüfen
+ vorname := r.PostForm.Get("vorname")
+ if vorname == "" {
+ http.Error(w, "Pflichtfeld fehlt.", http.StatusBadRequest)
+ return
+ }
+ nachname := r.PostForm.Get("nachname")
+ if nachname == "" {
+ http.Error(w, "Pflichtfeld fehlt.", http.StatusBadRequest)
+ return
+ }
+ email := r.PostForm.Get("email")
+ telefon := r.PostForm.Get("telefon")
+ sessions := r.PostForm["sessions"]
+ agb := parseCheckboxValue(r.PostForm.Get("agb"))
+ if agb == "nein" {
+ http.Error(w, "AGB wurde nicht akzeptiert.", http.StatusBadRequest)
+ return
+ }
+ newsletter := parseCheckboxValue(r.PostForm.Get("newsletter"))
+ equipment := parseCheckboxValue(r.PostForm.Get("equipment"))
+ format, err := parseRadiobuttonValue(r.PostForm.Get("format"))
+ if err != nil {
+ http.Error(w, "Ungültige Auswahl des Formats.", http.StatusBadRequest)
+ return
+ }
+
+ // Ausgabe im Terminal
+ fmt.Fprintf(w, "Neue Registrierung erhalten:\n")
+ fmt.Fprintf(w, "Vorname: %s\n", vorname)
+ fmt.Fprintf(w, "Nachname: %s\n", nachname)
+ fmt.Fprintf(w, "E-Mail: %s\n", email)
+ fmt.Fprintf(w, "Telefon: %s\n", telefon)
+ fmt.Fprintf(w, "Bevorzugte Sessions: \n")
+ for _, session := range sessions {
+ fmt.Fprintf(w, " - %s\n", session)
+ }
+ fmt.Fprintf(w, "AGB: %s\n", agb)
+ fmt.Fprintf(w, "Newsletter: %s\n", newsletter)
+ fmt.Fprintf(w, "Equipment benötigt: %s\n", equipment)
+ fmt.Fprintf(w, "Teilnahmeformat: %s", format)
+}
+
+func main() {
+ var workshop workshopHandler
+ fmt.Println("Server läuft auf localhost:8080...")
+ log.Fatal(http.ListenAndServe(":8080", workshop))
+}
diff --git a/web/07/labor/loesungen/workshop-anmeldung.html b/web/07/labor/loesungen/workshop-anmeldung.html
new file mode 100644
index 0000000..1d2b32e
--- /dev/null
+++ b/web/07/labor/loesungen/workshop-anmeldung.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<html lang="de">
+
+<head>
+ <meta charset="utf-8">
+ <title>Workshop-Anmeldung
+
+
+
+
+
+
+