Webservice-如何部署？

Question

I am trying to write a simple webservice which produces a JSON string. What I really want to do is get some info from my database through this JSON string and use it in my Android application. I want to write it all in Java and try to avoid using php.

I am not sure how to deploy this thing to my remote server through Filezilla.

This is just not the end result at all. I just tried to write something that could produce a JSON string. I am using the jersey lib btw.

package services;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;

import org.json.JSONException;
import org.json.JSONObject;

@Path("/webservice")
public class RestFulWebservice {

    @GET
    @Produces("application/json")
    public Response produceJSON() throws JSONException {
        JSONObject jsonObject = new JSONObject();
        double weight = 62;
        double height = 170;
        jsonObject.put("Weight", weight);
        jsonObject.put("Height", height);

        String result = "Produces JSON: \n" + jsonObject;
        return Response.status(200).entity(result).build();
    }

}

I would really appreciate any advice. If I can just produce a dynamic JSON string I think I know how to read in my code.

Answer 1

打扰一下，但我不明白Java代码接收到JSON对象还是Java代码发送了JSON对象。

Answer 2

Deploying Java applications on the server is not like in PHP where you just copy files. You need to build a WAR (web archive) package and deploy it in a servlet container, for example Tomcat .

Answer 3

Your code needs to run in a webcontainer of some sort (tomcat, jetty etc).

You have a couple of options, either a separately installed webcontainer or one embeddded in your application.

You then need to build your compiled code into a war (to deploy to a separately installed container) or an executable jar (for an embedded container).

If you're just getting started with web containers then its probably best to read up on something like tomcat.

Alternatively you can look at something like spring boot.