This example demonstrates the capability of wildcard URI matching allowing for a full fledged file server to be created using esp_http_server.
80 lines
2.8 KiB
HTML
80 lines
2.8 KiB
HTML
<table class="fixed" border="0">
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<col width="1000px" /><col width="500px" />
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<tr><td>
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<h2>ESP32 File Server</h2>
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</td><td>
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<table border="0">
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<tr>
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<td>
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<label for="newfile">Upload a file</label>
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</td>
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<td colspan="2">
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<input id="newfile" type="file" onchange="setpath()" style="width:100%;">
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</td>
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</tr>
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<tr>
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<td>
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<label for="filepath">Set path on server</label>
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</td>
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<td>
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<input id="filepath" type="text" style="width:100%;">
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</td>
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<td>
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<button id="upload" type="button" onclick="upload()">Upload</button>
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</td>
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</tr>
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</table>
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</td></tr>
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</table>
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<script>
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function setpath() {
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var default_path = document.getElementById("newfile").files[0].name;
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document.getElementById("filepath").value = default_path;
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}
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function upload() {
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var filePath = document.getElementById("filepath").value;
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var upload_path = "/upload/" + filePath;
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var fileInput = document.getElementById("newfile").files;
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/* Max size of an individual file. Make sure this
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* value is same as that set in file_server.c */
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var MAX_FILE_SIZE = 200*1024;
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var MAX_FILE_SIZE_STR = "200KB";
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if (fileInput.length == 0) {
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alert("No file selected!");
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} else if (filePath.length == 0) {
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alert("File path on server is not set!");
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} else if (filePath.indexOf(' ') >= 0) {
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alert("File path on server cannot have spaces!");
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} else if (filePath[filePath.length-1] == '/') {
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alert("File name not specified after path!");
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} else if (fileInput[0].size > 200*1024) {
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alert("File size must be less than 200KB!");
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} else {
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document.getElementById("newfile").disabled = true;
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document.getElementById("filepath").disabled = true;
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document.getElementById("upload").disabled = true;
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var file = fileInput[0];
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var xhttp = new XMLHttpRequest();
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xhttp.onreadystatechange = function() {
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if (xhttp.readyState == 4) {
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if (xhttp.status == 200) {
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document.open();
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document.write(xhttp.responseText);
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document.close();
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} else if (xhttp.status == 0) {
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alert("Server closed the connection abruptly!");
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location.reload()
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} else {
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alert(xhttp.status + " Error!\n" + xhttp.responseText);
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location.reload()
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}
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}
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};
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xhttp.open("POST", upload_path, true);
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xhttp.send(file);
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}
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}
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</script>
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