一:代码:
1.1 入口文件: index.js
var server = require('./server');
var router = require("./router");
var requestHandlers = require("./requestHandlers");
var handle = {};
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/upload"] = requestHandlers.upload;
handle["/show"] = requestHandlers.show;
server.start(router.route, handle);
1.2 服务器文件: server.js
var http = require("http");
var url = require("url");
function start(route, handle){
http.createServer(function(request, response) {
// console.log(url.parse(request.url));
// console.log(url.parse(request.url).query);
var pathname = url.parse(request.url).pathname;
console.log('request for [' +pathname+ "] received.");
//接收请求数据:
var postData = "";
request.setEncoding("utf8");
request.on("data", function(chunk){
postData += chunk;
console.log("Received POST data chunk '" +chunk+"'");
});
request.on("end", function(){
route(handle, pathname, response, postData);
});
}).listen(8888);
console.log("server has started.");
}
exports.start = start;
1.3 路由文件: router.js
function route(handle, pathname, response, postData){
console.log("About to route a request for " +pathname);
if (typeof handle[pathname] === 'function') {
//调用函数:
handle[pathname](response, postData);
} else{
console.log("No request handler found for " + pathname);
response.writeHead(404, {"Content-Type": "text/plain"});
response.write("404 Not found");
response.end();
}
}
exports.route = route;
1.4 请求处理程序文件: requestHandles.js
var querystring = require("querystring");
var fs = require("fs");
function start(response, postData) {
console.log("Request handler 'start' was called.");
var body = '<html>'+
'<head>'+
'<meta http-equiv="Content-Type" content="text/html; '+
'charset=UTF-8" />'+
'</head>'+
'<body>'+
'<form action="/upload" method="post">'+
'<input type="text" value="" name="userName"/>'+
'<textarea name="text" rows="20" cols="60"></textarea>'+
'<input type="submit" value="Submit text" />'+
'</form>'+
'</body>'+
'</html>';
response.writeHead(200, {"Content-Type": "text/html"});
response.write(body);
response.end();
}
function upload(response, postData) {
console.log("Request handler 'upload' was called.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("You've sent allData: " +querystring.parse(postData)+ "\n");
response.write("You've sent userName: " +querystring.parse(postData).userName+ "\n");
response.write("You've sent text: " +querystring.parse(postData).text+ "\n");
response.end();
}
function show(response, postData){
console.log("Request handle 'show' was called.");
39 var filename = "C:/Users/dc5yy/Desktop/图片_1/06.jpg";
40 fs.readFile(filename, "binary", function(error, file){
if (error) {
42 response.writeHead(500, {"Content-Type": "text/plain"});
response.write(error + "\n");
response.end();
} else{
46 response.writeHead(200, {"Content-Type": "image/jpg"});
47 response.write(file, "binary");
response.end();
}
});
}
exports.start = start;
exports.upload = upload;
exports.show = show;
1.5 结果:
1)要读取的图片 地址:
var filename = "C:/Users/dc5yy/Desktop/图片_1/06.jpg";
2) 启动服务器:
3) http访问: