doc(examples) Improve Params example

mathieucarbou · mathieucarbou · commit 45d844c677b7 · 2025-01-31T09:51:37.000+01:00
diff --git a/examples/Params/Params.ino b/examples/Params/Params.ino
@@ -21,6 +21,56 @@
 
 static AsyncWebServer server(80);
 
+static const char *htmlContent PROGMEM = R"(
+<!DOCTYPE html>
+<html>
+<head>
+    <title>POST Request with Multiple Parameters</title>
+</head>
+<body>
+    <form action="http://192.168.4.1" method="POST">
+        <label for="who">Who?</label>
+        <input type="text" id="who" name="who" value="Carl"><br>
+        <label for="g0">g0:</label>
+        <input type="text" id="g0" name="g0" value="1"><br>
+        <label for="a0">a0:</label>
+        <input type="text" id="a0" name="a0" value="2"><br>
+        <label for="n0">n0:</label>
+        <input type="text" id="n0" name="n0" value="3"><br>
+        <label for="t10">t10:</label>
+        <input type="text" id="t10" name="t10" value="3"><br>
+        <label for="t20">t20:</label>
+        <input type="text" id="t20" name="t20" value="4"><br>
+        <label for="t30">t30:</label>
+        <input type="text" id="t30" name="t30" value="5"><br>
+        <label for="t40">t40:</label>
+        <input type="text" id="t40" name="t40" value="6"><br>
+        <label for="t50">t50:</label>
+        <input type="text" id="t50" name="t50" value="7"><br>
+        <label for="g1">g1:</label>
+        <input type="text" id="g1" name="g1" value="2"><br>
+        <label for="a1">a1:</label>
+        <input type="text" id="a1" name="a1" value="2"><br>
+        <label for="n1">n1:</label>
+        <input type="text" id="n1" name="n1" value="3"><br>
+        <label for="t11">t11:</label>
+        <input type="text" id="t11" name="t11" value="13"><br>
+        <label for="t21">t21:</label>
+        <input type="text" id="t21" name="t21" value="14"><br>
+        <label for="t31">t31:</label>
+        <input type="text" id="t31" name="t31" value="15"><br>
+        <label for="t41">t41:</label>
+        <input type="text" id="t41" name="t41" value="16"><br>
+        <label for="t51">t51:</label>
+        <input type="text" id="t51" name="t51" value="17"><br>
+        <input type="submit" value="Submit">
+    </form>
+</body>
+</html>
+)";
+
+static const size_t htmlContentLength = strlen_P(htmlContent);
+
 void setup() {
   Serial.begin(115200);
 
@@ -31,21 +81,19 @@ void setup() {
 
   // Get query parameters
   //
-  // curl -v http://192.168.4.1/?message=bob
+  // curl -v http://192.168.4.1/?who=Bob
   //
   server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
-    String message;
-    if (request->hasParam("message")) {
-      message = request->getParam("message")->value();
-    } else {
-      message = "No message sent";
+    if (request->hasParam("who")) {
+      Serial.printf("Who? %s\n", request->getParam("who")->value().c_str());
     }
-    request->send(200, "text/plain", "Hello, GET: " + message);
+
+    request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength);
   });
 
   // Get form body parameters
   //
-  // curl -v -H "Content-Type: application/x-www-form-urlencoded" -d "message=carl" -d "param=value" http://192.168.4.1/
+  // curl -v -H "Content-Type: application/x-www-form-urlencoded" -d "who=Carl" -d "param=value" http://192.168.4.1/
   //
   server.on("/", HTTP_POST, [](AsyncWebServerRequest *request) {
     // display params
@@ -55,14 +103,14 @@ void setup() {
       Serial.printf("PARAM[%u]: %s = %s\n", i, p->name().c_str(), p->value().c_str());
     }
 
-    // get message param
-    String message;
-    if (request->hasParam("message", true)) {
-      message = request->getParam("message", true)->value();
+    // get who param
+    String who;
+    if (request->hasParam("who", true)) {
+      who = request->getParam("who", true)->value();
     } else {
-      message = "No message sent";
+      who = "No message sent";
     }
-    request->send(200, "text/plain", "Hello, POST: " + message);
+    request->send(200, "text/plain", "Hello " + who + "!");
   });
 
   server.begin();
