因此NetBeans IDE可以从数据库生成RESTful Web Service(该表已经打包到实体类中)。我遵循了这个tutorial,并且已成功生成RESTful Web服务。
现在,我想从我的Android应用程序打电话,但到目前为止没有运气。我用过“Android异步Http客户端” 适用于Android的基于回调的Http客户端库“
所以这是我的代码片段:
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();
}
});
和此:
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:
@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”)注释并稍微修改了方法。
请说清楚,我对此很新,所以我没有任何线索。我知道这是由于一些非常愚蠢的错误,但请帮忙。程序停在
“发生意外错误![最常见的错误:设备可能不是 连接到Internet或远程服务器未启动并运行]“
。很明显,我无法很好地连接这两个程序。
答案 0 :(得分:0)
您的HTTP网址是" http://localhost:8080/ ..."即它希望到达在Android设备上运行的服务器。如果您的IDE /服务正在您的工作站上运行,那么:
参考文献: