从Android本地调用NetBeans IDE生成的RESTful Web服务? [英] Locally call RESTful Web Service generated by NetBeans IDE from Android?

问题描述

因此NetBeans IDE可以从数据库生成RESTful Web服务(表已打包到实体类中).我遵循了教程，并且RESTful Web服务已成功生成.

so the NetBeans IDE can generate RESTful Web Service from database (the table has been packed into an entity class). I followed this tutorial and the RESTful Web Service has been generated successfully.

现在，我想从我的Android应用中致电，但到目前为止还没有运气.我使用了"Android异步Http客户端 适用于Android的基于回调的Http客户端库"

Now, I would like to call from my Android app, but no luck so far. I used "Android Asynchronous Http Client A Callback-Based Http Client Library for Android"

这是我的代码段:

customActionBarView.findViewById(R.id.actionbar_done).setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        // "Done"
                        String id = generateId();
                        EditText number = (EditText) findViewById(R.id.caller_phone_number);
                        EditText information = (EditText) findViewById(R.id.caller_information);

                        checkAvailability(id, number.getText().toString(), information.getText().toString());

                        finish();
                    }
                });

和这个:

 public void processWebServices(RequestParams params) {
        AsyncHttpClient client = new AsyncHttpClient();
        client.post("http://localhost:8080/AndroidRESTful/com.erikchenmelbourne.entities.caller/create", params, new AsyncHttpResponseHandler() {
            @Override
            public void onSuccess(int statusCode, Header[] headers, byte[] response) {
                try {
                    JSONObject obj = new JSONObject(response.toString());
                    if (obj.getBoolean("status")) {
                        setDefaultValues();
                        Toast.makeText(getApplicationContext(), "Information has been sent!", Toast.LENGTH_LONG).show();
                    } else {
                        Toast.makeText(getApplicationContext(), obj.getString("error_msg"), Toast.LENGTH_LONG).show();
                    }
                } catch (JSONException e) {
                    Toast.makeText(getApplicationContext(), "Error Occured [Server's JSON response is invalid]!", Toast.LENGTH_LONG).show();
                    e.printStackTrace();
                }
            }

            @Override
            public void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {
                if (i == 404) {
                    Toast.makeText(getApplicationContext(), "Requested resource not found", Toast.LENGTH_LONG).show();
                } else if (i == 500) {
                    Toast.makeText(getApplicationContext(), "Something went wrong at server end", Toast.LENGTH_LONG).show();
                } else {
                    Toast.makeText(getApplicationContext(), "Unexpected Error occcured! [Most common Error: Device might not be connected to Internet or remote server is not up and running]", Toast.LENGTH_LONG).show();
                }
            }
        });
    }

这是NetBeans IDE生成的POST方法:

and here is NetBeans IDE generated POST method:

 @Path("/create") 
    @POST
    @Consumes({"application/xml", "application/json"})
    public void create(@QueryParam("id") int id, @QueryParam("number") String number, @QueryParam("information") String information) {
    Caller entity = new Caller (id, number, information);
        super.create(entity);
    }

我添加了@Path("/create")批注，并对方法进行了一些修改.

I added the @Path("/create") annotation and modified the method a bit.

请说明一下，我对此还很陌生，所以我没有头绪.我知道这是由于一些非常愚蠢的错误引起的，但请提供帮助.该程序在

Please shed some light, I am fairly new to this so I don't have a clue. I know it is due to some very silly mistakes but please help. The program stops at

发生意外错误！[最常见的错误:设备可能没有 连接到Internet或远程服务器的服务器未启动并正在运行]"

"Unexpected Error occcured! [Most common Error: Device might not be connected to Internet or remote server is not up and running]"

.很明显，我无法很好地连接这两个程序.

. So obvious I couldn't connect the two programs well.

推荐答案

您的HTTP URL为" http://localhost:8080 / ..."，即它希望到达运行在Android设备上的服务器.如果您的IDE/服务正在您的工作站上运行，则:

Your HTTP URL is "http://localhost:8080/..." i.e. it expects to reach a server running on the Android device. If your IDE/service is running on your workstation then:

• 如果您正在Genymotion模拟器上运行应用程序，请使用10.0.3.2而不是 localhost
• 如果您在SDK仿真器上运行该应用，请使用10.0.2.2而不是l ocalhost
• 如果您是在真实设备上运行应用程序，则替换IP 工作站的地址，并确保设备和工作站在同一网络上.

• If you're running the app on the Genymotion emulator use 10.0.3.2 instead of localhost
• If you're running the app on the SDK emulator use 10.0.2.2 instead of localhost
• If you're running the app on a real device then substitute the IP address of your workstation and make sure the device and workstation are on the same network.

参考:

• 如何从Genymotion android仿真器访问localhost
• 仿真器网络

• How to access localhost from a Genymotion android emulator
• Emulator Networking

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