nodejs学习之表单提交(1)

nodejs作为一门后端语言，接触的最多的是它的框架，但是它本身的api我觉得更是非学不可，所有才有了这篇文章

表单提交是最基本的也是最实用的入门实例

HTML：

<!DOCTYPE html>
<html>
<head>
    <title>main</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<div id="div1" style="width: 350px;">
    <form id="form1" method="post" action="postlogin" >
        <fieldset>
            <legend>表单1</legend>
            姓名:<input type="text" name="username" /><br />
            学历:<select name="education">
            <option value="中学">中学</option>
            <option value="大专">大专</option>
            <option value="本科">本科</option>
            <option value="硕士">硕士</option>
            <option value="博士">博士</option>
        </select><br />
            住址:<input type="text" name="address" />
            隐藏:<input name="hide" disabled="disabled" value="111" />
            <input type="submit" value="提交" />
        </fieldset>
    </form>
</div>
</body>
</html>

server端：

var httpserver = require("http");
var qs = require("querystring");
var url = require("url");
var fs = require("fs");

httpserver.createServer(onRequest).listen(3000);

function onRequest(request,response)
{
    var pathname = url.parse(request.url).pathname;
    if(pathname=="/")    //访问表单页面
    {
        response.writeHead(200,{"Content-Type":"text/html"});
        fs.readFile("index.html","utf-8",function(e,data){
            response.write(data);
            response.end();
        });
    }
    else if(pathname=="/postlogin")    //处理post方式请求
    {
        var urlstr="";
        request.addListener("data",function(postdata){
            urlstr+=postdata;    //接收到的表单数据字符串，这里可以用两种方法将UTF-8编码转换为中文
            var jsondata = qs.parse(urlstr);        //转换成json对象
            var decodedata = decodeURIComponent(urlstr);        //对表单数据进行解码
            console.log(urlstr);
            console.log(jsondata);
            console.log(decodedata);
            urlstr = decodedata;
        });
        request.addListener("end",function(){
            response.writeHead(200,{"Content-Type":"text/plain; charset=utf-8"});
            response.write(urlstr);
            response.end();
        });
    }
    else if(pathname=="/getlogin")    //处理get方式请求
    {
        var urlstr = url.parse(request.url).query;
        var jsondata = qs.parse(urlstr);
        var decodedata = decodeURIComponent(urlstr);

        console.log(urlstr);
        console.log(jsondata);
        console.log(decodedata);
        urlstr = decodedata;

        response.writeHead(200,{"Content-Type":"text/plain; charset=utf-8"});
        response.write(urlstr);
        response.end();
    }
    else
    {
        response.writeHead(200,{"Content-Type":"text/plain"});
        response.write("error");
        response.end();
    }
}

知识点：

1.node创建一个简单的服务器

2.fs读取文件模块

3.url模块

4.解析url的querystring模块

有兴趣的可以参看api这里就不一一细说了