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服务模块
var http = require("http");
var url = require("url");
function start(route,handle){
function onRequest(request,response){
var pathname = url.parse(request.url).pathname;
if (pathname != "/favicon.ico") {
console.log("Request for" + pathname + " received");
route(handle,pathname,response,request);
}
}
http.createServer(onRequest).listen(8888);
console.log("Server has started");
}
exports.start = start;
路由模块
function route(handle,pathname,response,request){
console.log("About to route a request for "+pathname);
if (typeof handle[pathname] === 'function') {
handle[pathname](response,request);
}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;
请求处理模块
var querystring = require("querystring"),
fs = require("fs"),
formidable = require("formidable");
function start(response) {
console.log("Request handler 'start' was called.");
var body = ''+
'
'+
''+
''+
'
'+
'
'+
''+
'';
response.writeHead(200, {"Content-Type": "text/html"});
response.write(body);
response.end();
}
function upload(response, request) {
console.log("Request handler 'upload' was called.");
var form = new formidable.IncomingForm();
console.log("about to parse");
form.parse(request, function(error, fields, files) {
console.log("parsing done");
var readStream = fs.createReadStream(files.upload.path);
var writeStream=fs.createWriteStream("./tmp/test.png");
readStream.pipe(writeStream);
readStream.on('end',function(){
fs.unlinkSync(files.upload.path);
});
response.writeHead(200, {"Content-Type": "text/html"});
response.write("received image:
");
response.write("
");
response.end();
});
}
function show(response) {
console.log("Request handler 'show' was called.");
fs.readFile("./tmp/test.png", "binary", function(error, file) {
if(error) {
response.writeHead(500, {"Content-Type": "text/plain"});
response.write(error + "\n");
response.end();
} else {
response.writeHead(200, {"Content-Type": "image/png"});
response.write(file, "binary");
response.end();
}
});
}
exports.start = start;
exports.upload = upload;
exports.show = show;
index.js
var server = require("./server");
var router = require("./route");
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);
访问:http://localhost:8888/start
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分享题目：nodejs上传图片并展示-创新互联
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