我正在从客户端向服务器端发送数据，从服务器端它必须获取我从客户端发送的数据。
为此，我们必须在 def create 操作中使用 post 方法。
服务器决定（ROR）
class PostsController < ApplicationController
respond_to :json, :xml
before_filter :load
def load
if signed_in?
@my_posts = current_user.posts.paginate(page: params[:page],:per_page => 10)
@my_post = current_user.posts.new
end
@posts = Post.paginate(page: params[:page],:per_page => 10)
@post = Post.new
end
def index
@posts = Post.all
respond_with(@posts) do |format|
format.json { render json: @post_names = {:post => @posts.as_json(:only=> :content)} }
end
end
def show
if signed_in?
@post = Post.find(params[:id])
@my_posts = current_user.posts.paginate(page: params[:page],:per_page => 10)
current_user.vote_for(@post)
else
@post = Post.find(params[:id])
Guest.find(1).vote_for(@post)
end
@posts = Post.paginate(page: params[:page],:per_page => 10)
@guest = Guest.new
@user = User.new
@users = User.paginate(page: params[:page],:per_page => 10)
end
def create
@post = Post.new(params[:post])
respond_to do |format|
if @post.save
@posts = Post.paginate(page: params[:page],:per_page => 10)
format.json { render json: @post, status: :created }
else
@posts = Post.paginate(page: params[:page],:per_page => 10)
format.json { render json: @post.errors, status: :unprocessable_entity }
end
@guest = Guest.new
@users = User.paginate(page: params[:page],:per_page => 10)
end
end
def my_prayer_create
@my_post = current_user.posts.new(params[:post])
@post = Post.new(params[:post])
@guest = Guest.new
@user = User.new
@users = User.paginate(page: params[:page],:per_page => 10)
if @my_post.save
flash[:notice] = "Prayer Successfully created."
@my_posts = current_user.posts.paginate(page: params[:page],:per_page => 10)
else
flash[:notice] = "Error"
@my_posts = current_user.posts.paginate(page: params[:page],:per_page => 10)
end
end
def edit
if signed_in?
@my_post = current_user.posts.find(params[:id])
else
@post = Post.find(params[:id])
end
end
def update
if signed_in?
@my_post = current_user.posts.find(params[:id])
if @my_post.update_attributes(params[:post])
flash[:notice] = "Prayer Successfully updated."
@my_posts = current_user.posts.paginate(page: params[:page],:per_page => 10)
end
else
@post = Post.find(params[:id])
end
end
def destroy
if signed_in?
@my_post = current_user.posts.find(params[:id])
@users = User.paginate(page: params[:page],:per_page => 10)
@guest = Guest.new
@my_post.destroy
flash[:notice] = "Prayer Successfully destroyed."
@my_posts = current_user.posts.paginate(page: params[:page],:per_page => 10)
end
end
我在这里也提到了客户端代码。
public class HomeLayoutActivity extends Activity implements OnClickListener{
private EditText value;
private Button btn;
private ProgressBar pb;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home_layout);
value=(EditText)findViewById(R.id.editText1);
btn=(Button)findViewById(R.id.button1);
pb=(ProgressBar)findViewById(R.id.progressBar1);
pb.setVisibility(View.GONE);
btn.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.home_layout, menu);
return true;
}
public void onClick(View v) {
// TODO Auto-generated method stub
if(value.getText().toString().length()<1){
// out of range
Toast.makeText(this, "please enter something", Toast.LENGTH_LONG).show();
}else{
pb.setVisibility(View.VISIBLE);
new MyAsyncTask().execute(value.getText().toString());
}
}
private class MyAsyncTask extends AsyncTask<String, Integer, Double>{
@Override
protected Double doInBackground(String... params) {
// TODO Auto-generated method stub
postData(params[0]);
return null;
}
protected void onPostExecute(Double result){
pb.setVisibility(View.GONE);
Toast.makeText(getApplicationContext(), "command sent", Toast.LENGTH_LONG).show();
}
protected void onProgressUpdate(Integer... progress){
pb.setProgress(progress[0]);
}
public void postData(String valueIWantToSend) {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://dry-brushlands-3645.herokuapp.com/posts");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("content", valueIWantToSend));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
//httppost.addHeader("Authorization","Basic "+authorization);
//httppost.addHeader("Content-Type","application/x-www-form-urlencoded");
httppost.setHeader("Content-Type", "application/x-www-form-urlencoded");
httppost.setHeader("Accept", "application/json");
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
}
}