复现已有算法

2026-07-14 15:43:18 +08:00
parent abebd2a683
commit 50b8111fd9
860 changed files with 182250 additions and 18 deletions
@@ -0,0 +1,83 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title>File upload</title>
+    <script type="text/javascript">
+        var xhr;
+        //File uploading method
+        function UpladFile() {
+            var fileObj = document.getElementById("file").files[0]; // js get file object
+            var url =  "/upload_endpoint"; 
+
+            var form = new FormData(); // FormData object
+            form.append("file", fileObj); // File object
+
+            xhr = new XMLHttpRequest();  // XMLHttpRequest object
+            xhr.open("post", url, true); //post
+            xhr.onload = uploadComplete; 
+            xhr.onerror =  uploadFailed; 
+
+            xhr.upload.onprogress = progressFunction;
+            xhr.upload.onloadstart = function(){
+                ot = new Date().getTime();
+                oloaded = 0;
+            };
+
+            xhr.send(form); 
+        }
+
+        function uploadComplete(evt) {
+            var data = evt.target.responseText;
+            alert("File has been uploaded.\n" + data);
+        }
+        
+        function uploadFailed(evt) {
+            alert("Upload failed!");
+        }
+        
+        function cancleUploadFile(){
+            xhr.abort();
+        }
+
+        function progressFunction(evt) {
+            var progressBar = document.getElementById("progressBar");
+            var percentageDiv = document.getElementById("percentage");
+            if (evt.lengthComputable) {//
+                progressBar.max = evt.total;
+                progressBar.value = evt.loaded;
+                percentageDiv.innerHTML = Math.round(evt.loaded / evt.total * 100) + "%";
+            }
+            var time = document.getElementById("time");
+            var nt = new Date().getTime();
+            var pertime = (nt-ot)/1000; 
+            ot = new Date().getTime(); 
+            var perload = evt.loaded - oloaded; 
+            oloaded = evt.loaded;
+            var speed = perload/pertime;
+            var bspeed = speed;
+            var units = 'b/s';
+            if(speed/1024>1){
+                speed = speed/1024;
+                units = 'k/s';
+            }
+            if(speed/1024>1){
+                speed = speed/1024;
+                units = 'M/s';
+            }
+            speed = speed.toFixed(1);
+            var resttime = ((evt.total-evt.loaded)/bspeed).toFixed(1);
+            time.innerHTML = ',Speed: '+speed+units+', the remaining time: '+resttime+'s';
+            if(bspeed==0) time.innerHTML = 'Upload cancelled';
+        }
+    </script>
+</head>
+<body>
+<progress id="progressBar" value="0" max="100" style="width: 300px;"></progress>
+<span id="percentage"></span><span id="time"></span>
+<br /><br />
+<input type="file" id="file" name="myfile" />
+<input type="button" onclick="UpladFile()" value="Upload" />
+<input type="button" onclick="cancleUploadFile()" value="Cancel" />
+</body>
+</html>
@@ -0,0 +1,46 @@
+#include <drogon/drogon.h>
+using namespace drogon;
+
+int main()
+{
+    app().registerHandler(
+        "/",
+        [](const HttpRequestPtr &,
+           std::function<void(const HttpResponsePtr &)> &&callback) {
+            auto resp = HttpResponse::newHttpViewResponse("FileUpload");
+            callback(resp);
+        });
+
+    app().registerHandler(
+        "/upload_endpoint",
+        [](const HttpRequestPtr &req,
+           std::function<void(const HttpResponsePtr &)> &&callback) {
+            MultiPartParser fileUpload;
+            if (fileUpload.parse(req) != 0 || fileUpload.getFiles().size() != 1)
+            {
+                auto resp = HttpResponse::newHttpResponse();
+                resp->setBody("Must only be one file");
+                resp->setStatusCode(k403Forbidden);
+                callback(resp);
+                return;
+            }
+
+            auto &file = fileUpload.getFiles()[0];
+            auto md5 = file.getMd5();
+            auto resp = HttpResponse::newHttpResponse();
+            resp->setBody(
+                "The server has calculated the file's MD5 hash to be " + md5);
+            file.save();
+            LOG_INFO << "The uploaded file has been saved to the ./uploads "
+                        "directory";
+            callback(resp);
+        },
+        {Post});
+
+    LOG_INFO << "Server running on 127.0.0.1:8848";
+    app()
+        .setClientMaxBodySize(20 * 2000 * 2000)
+        .setUploadPath("./uploads")
+        .addListener("127.0.0.1", 8848)
+        .run();
+}