java - Writing a simple servlet. Getting and sending data via servlet -

-

I'm a newbie in servlet writing. I need to write a simple servlet, it should have input and output data via form. For example, in my service I have input data about some car (this includes such features: car name, car size, and car color). The servicelet has to save these data and also, it will show saved data. I have done something, but I still do not know about completing.

This is an html-code page, the subnet calls it: 

   & Lt; Title & gt; Cars & lt; / Title & gt; & Lt; / Head & gt; K & lt; Body & gt; & Lt; Center & gt; Cars & lt; / Center & gt; & Lt; P & gt; Name: & lt; / P & gt; & Lt; Form id = "form1" name = "form1" method = "post" verb = "" & gt; & Lt; Label = "car_name"> gt; & Lt; / Label & gt; & Lt; Input type = "text" name = "car_name" id = "car_name" /> & Lt; / Form & gt; & Lt; P & gt; Color: & lt; / P & gt; & Lt; Form id = "form2" name = "form2" method = "post" action = "" & gt; & Lt; Label = "car_name"> gt; & Lt; / Label & gt; & Lt; Input type = "text" name = "car_color" id = "car_color" /> & Lt; / Form & gt; & Lt; P & gt; Size: & lt; / P & gt; & Lt; Form id = "form3" name = "form3" method = "post" verb = "" & gt; & Lt; For label = "car_size" & gt; & Lt; / Label & gt; & Lt; Input type = "text" name = "car_size" id = "car_size" /> & Lt; / Form & gt; & Lt; Input name = "send" type = "button" value = "send" /> & Lt; Input name = "get_out" type = "button" value = "output" /> & Lt; Textarea name = "output" cols = "10" rows = "10" read-only = "read only" & gt; & Lt; / Textarea & gt; & Lt; Fieldset & gt; & Lt; Legend & gt; Test simple servlets & lt; / Legend & gt; & Lt; Ul & gt; & Lt; Li & gt; & Lt; A href = "carServlet" & gt; Carveratelet & lt; / A & gt; Carveratlet is a servlet that carries data characteristics of cars and lieutenant; / Li & gt; & Lt; / Ul & gt; & Lt; / Fieldset & gt; & Lt; / Body & gt; & Lt; / Html & gt;   
 and servlet code (Java), (I only realized it):  
  package test package; Import javax.servlet.annotation.WebServlet; Import javax.servlet.http.httpServlet; @WebServlet ( "/ carServlet") public class CarServlet HttpServlet {// some code provides web-finds items on the page // only example string: String item = (String) getItem ( "car_name"); }   
 How can it be completed to save the servlet? Save saved data and touch it?   
 
 
  package test package; Import javax.servlet.annotation.WebServlet; Import javax.servlet.http.httpServlet; @WebServlet ( "/ carServlet") public class CarServlet HttpServlet {protected void increases doGet (HttpServletRequest request, HttpServletResponse response) ServletException, IOException {doPost (throws request, response); } Protected void doPost (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stub string Karnam = request.getParameter ( "car_name"); System.out.println ("car name:" + event name); }}   
 Try to apply it to your doGet and doPost method within your Srwolet. You are submitting a form through a post so that you can keep your code there. I just forwarded the post method to get it. You can access the parameter by request.getParameter ("parameterName");

Comments

Post a Comment

Popular posts from this blog

java - ImportError: No module named py4j.java_gateway -

-
I'm trying to call the Python using the Java program py4j . I've been installing the plug-in Eclipse and test name Piidvi project. I'm trying to execute the following part of the code found on py4j webpage: Import from py4j.java_gateway to JavaGateway, java_import gateway = JavaGateway () jvm = gateway.jvm java_import (jvm, '' Org.eclipse Kkorkrisorsej. * ") Vrkspes_rut = Jvankresourkesplginkgetvrkspas (). GetRoot (Gateway .help (workspace_root, '* Projects *') project_names = [project.getName () (for projects workpace_root.getProjects))] print (Projekt_nam) But I There is an error in import. I have checked that the P4JJ is present in the Jar Eclipse plugin directory. Can anyone help please? I had to install the py4j application
Read more

python - Receiving "KeyError" after decoding json result from url -

-
I am new to Python I am trying to parse JSON result from a URL. Basically, I was using the following: response = urllib.request.urlopen (url) json_obj = json.load (response) It should be a stroke "str 'not' bytes' in the lines of a given" JSON object, so after searching on the StackoverView Flo, I decode the response in this way: F = urllib.request.urlopen (Url) charset = f.info (). Get_param ('charset', 'utf8') data = f.read () decoded = json.loads (data.decode (charset)) If I print "decode" I is as follows: { 'link': { 'summary data': 'https: // localhost / piwebapi / streams / p0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / summary' 'value': 'https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / price ',' InterpolatedData ':' https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTE...
Read more

.net - Creating a new Queue Manager and Queue in Websphere MQ (using C#) -

-
"itemprop =" text "> I am writing applications that use WebSphere MQ to send messages. My unittests (for flow), I want to verify that I have put the correct message on the response queue. I am trying to figure out how to do this. My main obstacle is that I think it might be scary to clear the queue before running in my queue because the same queue can be used by other applications, I thought a decent solution would be a new line The manager will remove the queue for my solidarity and after using it. So my question is: Is it possible to use C # by using queue manager and queue? After the For future reference and future people, who want to make queues. I thought how to make and remove IBM MQ QE (not quenhers) with PCM messaging. It is not very simple, but it can be done. We have implemented it in a library and it is being used to create and delete commands before and after integration tests. The most important part of the code in this library is shown in the...
Read more