如何消耗POST調用，其中參數是類型的應用/ X WWW的窗體-urlencoded在節點JS

Question

我已經休息呼叫，在那裏它需要一個參數EMPID傳遞類型

application/x-www-form-urlencoded 

的

蔭試圖消耗，使用以下code.But值越來越爲未定義傳遞給restcall

function searchEmployee(employeeid){ 
     var empEndpoint = 'http://localhost:3001/searchemp'; 
     var http = new XMLHttpRequest(); 
     http.open('POST',empEndpoint,true); 
     http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); 
     var empid = employeeid; 
     http.send(empid) ; 
    } 

請能有人指出錯誤，並幫助我如何以正確的格式發佈。

***編輯添加的服務器代碼

app.post('/searchemp',function(req,res){ 
    reqbody = req.body.empid; 
    console.log(reqbody,"reqbody"); 
    var empdetails =con.query('SELECT * FROM tasktable WHERE Empid =?',reqbody, 
    function(err,rows){ 
     if(err) throw err; 

     console.log('EMP Data received from Db:\n'); 
     res.send(rows); 
}); 
}); 

Answer 1

這取決於你來自哪裏調用函數searchEmployee，你是怎麼做的。

作爲var empid = employeeid;和employeeid是你的函數的第一個參數，你應該調用searchEmployee與適當的參數，如2474。

所以你應該把它像：

searchEmployee(2474); 
 

 
function searchEmployee(employeeid){ 
 
     var empEndpoint = 'http://localhost:3001/searchemp'; 
 
     var http = new XMLHttpRequest(); 
 
     http.open('POST',empEndpoint,true); 
 
     http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); 
 
     var params = `empid=${empid}`; 
 
     http.send(params);    
 
    }

也許這會有所幫助：http://www.openjs.com/articles/ajax_xmlhttp_using_post.php

var url = "get_data.php"; 
 
var params = "lorem=ipsum&name=binny"; 
 
http.open("POST", url, true); 
 

 
//Send the proper header information along with the request 
 
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
 
http.setRequestHeader("Content-length", params.length); 
 
http.setRequestHeader("Connection", "close"); 
 

 
http.onreadystatechange = function() {//Call a function when the state changes. 
 
\t if(http.readyState == 4 && http.status == 200) { 
 
\t \t alert(http.responseText); 
 
\t } 
 
} 
 
http.send(params);

尤其是這應該是要走的路：

var params = "lorem=ipsum&name=binny";

您的等效應該是這樣的：

var params = `empid=${empid}`; 
 
http.send(params);