搭个简易上传测试服务器
比如:python flask写简单服务器
from flask import flask, url_for, request,redirect,send_from_directoryimport os app = flask(name) app.config['upload_folder'] = 'uploads/' # 保存文件位置allowed_extensions = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif'])@app.route('/uploads/<filename>')def uploaded_file(filename): return send_from_directory(app.config['upload_folder'], filename)@app.route('/', methods=['get', 'post'])def upload_file(): if request.method == 'post': file = request.files['file'] if file : file.save(os.path.join(app.config['upload_folder'], file.filename)) return redirect(url_for('uploaded_file', filename=file.filename)) return ''' <html><head><title>上传测试</title> </head><body><h1>上传测试</h1> <script> function upl(){ var form = new formdata(); form.append(file, document.getelementsbyname(file)[0].files[0]); var oreq = new xmlhttprequest(); oreq.open(post, /); oreq.send(form); } </script> <form action="" method="post" enctype="multipart/form-data"> <p><input type="file" name="file"> <input type="submit" value="表单提交"> </p></form> <input type="button" value="ajax提交" onclick="upl()"> </body> </html> '''with app.test_request_context(): # 输出url passif name == 'main': # app.debug = true app.run()
2.观察上传头标识
运行服务器后打开浏览器访问,地址打开控制台,上传任意文件,进行观察
3.nodejs编写上传测试客户端
var http = require('http');var querystring = require('querystring');var fs = require('fs');var post_data = { };//post提交数据var content = querystring.stringify(post_data);#将对象转换成字符串，字符串里多个参数将用 ‘&' 分隔，将用 ‘=' 赋值var boundarykey = new date().gettime();//创建随机切割标识字 你可以百度 'multipart form-data boundary'了解//var boundarykey =math.random().tostring(16); var options = { hostname: '127.0.0.1', port: 5000, path: '/', method: 'post', headers: { // 'accept': '*/*', // 'accept-encoding': 'gzip, deflate', // 'connection': 'keep-alive', 'content-type':'multipart/form-data; boundary=----'+boundarykey,//文件上传标识与切割标识 // 'host':'127.0.0.1:5000', // 'origin':'http://127.0.0.1:5000', // 'referer':'http://127.0.0.1:5000/', 'user-agent': 'mozilla/5.0 (windows nt 10.0; wow64) applewebkit/537.36 (khtml, like gecko) chrome/50.0.2661.102 safari/537.36' } };var req = http.request(options, function (res) { res.setencoding('utf8'); console.log('status: ' + res.statuscode); console.log('headers: ' + json.stringify(res.headers)); res.on('data', function (chunk) { console.log('body: ' + chunk); }); res.on('end', function () { console.log('res end'); }); });var payload ='\r\n------'+boundarykey+'\r\n' + 'content-disposition: form-data; name=file; filename=test.png\r\n' + 'content-type: image/png\r\n\r\n';var enddata = '\r\n------'+boundarykey+'--'; req.setheader('content-length', buffer.bytelength(payload) + buffer.bytelength(enddata) + fs.statsync(./test.png).size); req.write(payload);var filestream = fs.createreadstream(./test.png, { buffersize: 4 * 1024 }); filestream.pipe(req, { end: false }); filestream.on('end', function () { req.end(enddata); }); req.on('error', function (e) { console.log('problem with request: ' + e.message); }); req.write(content);// req.end();
还有种写法:
var http = require('http');var querystring = require('querystring');var fs = require('fs');var boundarykey = new date().gettime()//math.random().tostring(16); //创建随机切割标识字var options = { hostname: '127.0.0.1', port: 5000, path: '/', method: 'post', headers: { // 'accept': '*/*', // 'accept-encoding': 'gzip, deflate', // 'connection': 'keep-alive', 'content-type': 'multipart/form-data; boundary=----' + boundarykey, // 'host':'127.0.0.1:5000', // 'origin':'http://127.0.0.1:5000', // 'referer':'http://127.0.0.1:5000/', 'user-agent': 'mozilla/5.0 (windows nt 10.0; wow64) applewebkit/537.36 (khtml, like gecko) chrome/50.0.2661.102 safari/537.36' } };var req = http.request(options, function (res) { res.setencoding('utf8'); console.log('status: ' + res.statuscode); console.log('headers: ' + json.stringify(res.headers)); res.on('data', function (chunk) { console.log('body: ' + chunk); }); res.on('end', function () { console.log('res end'); }); });var payload = '\r\n------' + boundarykey + '\r\n' + 'content-disposition: form-data; name=file; filename=test.png\r\n' + 'content-type: image/png\r\n\r\n';var enddata = '\r\n------' + boundarykey + '--';var filestream=fs.readfilesync(./test.png); req.setheader('content-length', buffer.bytelength(payload) + buffer.bytelength(enddata) + fs.statsync(./test.png).size);console.log(payload); req.write(payload);console.log(filestream); req.write(filestream);console.log(enddata); req.end(enddata); req.on('error', function (e) { console.log('problem with request: ' + e.message); });
相信看了本文案例你已经掌握了方法，更多精彩请关注其它相关文章！
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以上就是nodejs如何使用http模块编写上传图片接口测试客户端的详细内容。