Odtnhj

I got null value in JSP when I try to send data from angular service
export class AllService {

 url: any;
 cpHeaders = new Headers( 'Content-Type': 'application/json' );
 options = new RequestOptions( headers: this.cpHeaders );

 constructor(private _http: Http) 

 register(data)
 console.log(data);
 return 
this._http.post('http://localhost:8080/client_api/register.jsp',data)
 .pipe(map((res: Response)=> return res.json()));
 

This is my angular service, I have to read data in jsp page

<%@ page import ="java.sql.*" %>
<%@ page import ="javax.sql.*" %>
<%
 String name=request.getParameter("name"); 
 String email=request.getParameter("email"); 
 String mobile=request.getParameter("mobile"); 
 String password=request.getParameter("password"); 
 String address=request.getParameter("address"); 
 out.println(name);
 out.println(email);
 out.println(mobile);
 out.println(password);
 out.println(address);
%>

It returns null value

Your Angular code sends your data as a JSON object within the request body, but your JSP code expects url-encoded body content.

You can change request body format by turning second argument of _http.post into HttpParams instance and setting correct request header like this:

import HttpClient, HttpParams, HttpHeaders from '@angular/common/http';

...

this._http.post(
 '/client_api/register.jsp',
 new HttpParams( fromObject: data ),
 headers: new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
).pipe(map((res: Response)=> return res.json()));