Pessoal estou com dúvida de como eu recebo um JSONObject em um Servlet? Eu faço esse Post para um Servlet JSONObject jsonObj = new JSONObject(); jsonObj.put("username", username); jsonObj.put("apikey", apikey); // C…

Como receber um JSONObject?

Valew por responder cara, olha o que eu to tentando fazer:

tenho essa Home.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
Testando Servlet
<%
out.println("<form method=\"GET\" action=\"Servlet2\">");
out.println("Username: <input type=\"text\" name=\"username\" size=\"15\" /><br />");
out.println("Password: <input type=\"password\" name=\"password\" size=\"15\" /><br />");
out.println("<div align=\"center\">");
out.println("<p><input type=\"submit\" value=\"Login\" /></p>");
out.println("</div>");
out.println("</form>"); %>
</body>
</html>

Tenho esse Servlet:

package com;



import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.json.simple.JSONObject;

/**
 * Servlet implementation class Servlet
 */
@WebServlet("/Servlet")
public class Servlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Servlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}
	public JSONObject requestParamsToJSON(ServletRequest req) {
		  JSONObject jsonObj = new JSONObject();
		  Map<String,String[]> params = req.getParameterMap();
		  for (Map.Entry<String,String[]> entry : params.entrySet()) {
		    String v[] = entry.getValue();
		    Object o = (v.length == 1) ? v[0] : v;
		    jsonObj.put(entry.getKey(), o);
		  }
		  return jsonObj;
		}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		PrintWriter out = response.getWriter();
		out.println("<html>");
		out.println("<body> TESTE </body>");
		out.println("</html>");
		JSONObject jsonObj = requestParamsToJSON(request);
		out.flush();
		out.close();
	}

}

E o outro Servlet2:

package com;



import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.simple.JSONObject;

/**
 * Servlet implementation class Servlet2
 */
@WebServlet("/Servlet2")
public class Servlet2 extends HttpServlet {
	private static final long serialVersionUID = 1L;
    public Servlet2() {
        super();
        // TODO Auto-generated constructor stub
    }
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String param = request.getParameter("username");
		PrintWriter out = response.getWriter();
		out.println("TESTEEEEEEEEEEEEEEEEEEEEE");
		if(param =="Marlon"){
			out.println("TESTE SERVLET2");	
			String username = "Marlon";
			String apikey = "123123123";
			
			JSONObject jsonObj = new JSONObject();
			jsonObj.put("username", username);
			jsonObj.put("apikey", apikey);
			HttpClient client = new DefaultHttpClient();
			System.out.println(jsonObj.toString());

			// Create the POST object and add the parameters
			HttpPost httpPost = new HttpPost("http://localhost:8080/infra-mon/Servlet");
			StringEntity entity = new StringEntity(jsonObj.toString());
			entity.setContentType("application/json");
			httpPost.setEntity(entity);
			
			HttpResponse response2 = client.execute(httpPost);
		}
		out.flush();
		out.close();
		
	}
}

Estou só querendo testar a comunicação entre 2 Servlets via JSON, porem não estou conseguindo, então queria ver se alguem pudesse me indicar aonde estou errando.

Obrigado desde já.

2 Respostas

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