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# POST method and passing parameters ### Step 1: Passing data using parameters in GET method: ```java package com.gs.controller; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class XmlServlet extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Hello from Get method of XML servlet"); response.setContentType("text/html"); String userName = request.getParameter("userName"); PrintWriter printWriter = response.getWriter(); printWriter.println("Hello from GET method "+userName); } } ``` ### Step 2: Hit the URL and add the parameter as "?userName=Mohit" {% embed url="" %} ![](/files/-LafLG-1-7w_E1-3Ja2B) ### Step 3: In order to test POST create a simple html form: ```markup Insert title here Hello World ``` ### Step 4: Create doPost method in servlet: ```java package com.gs.controller; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class XmlServlet extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Hello from Get method of XML servlet"); response.setContentType("text/html"); String userName = request.getParameter("userName"); PrintWriter printWriter = response.getWriter(); printWriter.println("Hello from GET method " + userName); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Hello from POST method of XML servlet"); response.setContentType("text/html"); String userName = request.getParameter("userName"); PrintWriter printWriter = response.getWriter(); printWriter.println("Hello from POST method " + userName); } } ``` ![](/files/-LafMUzGKRSTrEP72z6B) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://gyansetu-jspandservlets-for-java.gitbook.io/workspace/post-method-and-passing-parameters.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.