第二阶段：团队开发Fooks第七天

实现了加入书架的功能

 

package Servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.dao;
import entity.Book;
import entity.Bookshelf;
import net.sf.json.JSONObject;


public class AddBookshelfServlet extends HttpServlet {

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html; charset=utf-8");
        String bookname =request.getParameter("bookName");
        String username =request.getParameter("username");

        Bookshelf bookshelf =new Bookshelf(bookname,username);
        dao dao =new dao();
        PrintWriter out = response.getWriter();
        JSONObject json=new JSONObject();
        if(dao.addshelf(bookshelf)) {
            json.put("result", 1);
            out.print(json);
        }else {
            json.put("result", 0);
            out.print(json);
        }
    }


    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}

package com.example.fooks.utils;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.TextView;

import androidx.recyclerview.widget.RecyclerView;

import com.example.fooks.R;
import com.example.fooks.entity.Book;
import com.example.fooks.entity.Bookshelf;

import java.util.List;


public class ShopsAdapter extends BaseAdapter {
    private List<Book> mList;
    private Context mContext;
    private LayoutInflater mLayoutInflater;


    public ShopsAdapter(List<Book> mList, Context mContext) {
        this.mList = mList;
        this.mContext = mContext;
        this.mLayoutInflater = LayoutInflater.from(mContext);
    }

    @Override
    public int getCount() {
        return mList.size();
    }

    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if(convertView==null)
        {
            viewHolder= new ViewHolder();
            convertView=mLayoutInflater.inflate(R.layout.booklist,null);
            viewHolder.mBook= convertView.findViewById(R.id.book_show);
            convertView.setTag(viewHolder);
        }else {
            viewHolder=(ViewHolder)convertView.getTag();
        }

        Book book=mList.get(position);
        viewHolder.mBook.setText(book.getBookName());

        return convertView;
    }
}

package com.example.fooks;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.OrientationHelper;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.StaggeredGridLayoutManager;

import com.example.fooks.entity.Book;
import com.example.fooks.entity.Bookshelf;
import com.example.fooks.utils.BooksAdapter;
import com.example.fooks.utils.ShopsAdapter;
import com.example.fooks.utils.ViewHolder;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;

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

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import cz.msebera.android.httpclient.Header;

public class ListActivity extends AppCompatActivity {
    private String mUsername;
    private Button mHome;
    private Button mBook;
    private Button mPerson;
    private ListView mListView;
    private EditText editText;
    private EditText editText2;
    private ShopsAdapter mShopsAdapter;
    private List<Book> mShowBooks  =new ArrayList<>();
    private List <ViewHolder> mViewHolder;
    private static String TAG="ListActivity";
    //设置返回按钮：不应该退出程序---而是返回桌面
    //复写onKeyDown事件
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {

        if (keyCode == KeyEvent.KEYCODE_BACK) {
            Intent home = new Intent(Intent.ACTION_MAIN);
            home.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            home.addCategory(Intent.CATEGORY_HOME);
            startActivity(home);
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }
    @Override
    protected void onPause() {
        overridePendingTransition(0,0);
        super.onPause();
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list);

        Intent intent = getIntent();
        mUsername = intent.getStringExtra("username");
        //
        mBook = (Button) this.findViewById(R.id.btn_book);
        mHome = (Button) this.findViewById(R.id.btn_home);

        mPerson = (Button) this.findViewById(R.id.btn_person);

        mListView=(ListView)this.findViewById(R.id.shop_booklist);

        //把输入框变成分割线 by：scf
        editText = this.findViewById(R.id.editText);
        editText2 = this.findViewById(R.id.editText2);
        editText.setFocusableInTouchMode(false);//不可编辑
        editText.setKeyListener(null);
        editText2.setFocusableInTouchMode(false);//不可编辑
        editText2.setKeyListener(null);

        //
        mPerson.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(ListActivity.this, UserActivity.class);
                intent.putExtra("username", mUsername);
                startActivity(intent);
                ListActivity.this.overridePendingTransition(0, 0);

            }
        });
        mHome.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(ListActivity.this, MainActivity.class);
                intent.putExtra("username", mUsername);
                startActivity(intent);
                ListActivity.this.overridePendingTransition(0, 0);

            }
        });
        mBook.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(ListActivity.this, ReadActivity.class);
                intent.putExtra("username", mUsername);
                startActivity(intent);
                ListActivity.this.overridePendingTransition(0, 0);
            }
        });

        //点击加入书架
       mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
           @Override
           public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
               Book book = mShowBooks.get(position);
               //定义AlertDialog.Builder对象，当长按列表项的时候弹出确认删除对话框
               AlertDialog.Builder builder = new AlertDialog.Builder(ListActivity.this);
               builder.setMessage("确定将本书加入书架?");
               builder.setTitle("提示");

               //添加AlertDialog.Builder对象的setPositiveButton()方法
               builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                   @Override
                   public void onClick(DialogInterface dialog, int which) {
                       Log.e(TAG, "书架信息:" + book);
                       AddtoBookshelf(book);
                   }
               });
               //添加AlertDialog.Builder对象的setNegativeButton()方法
               builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

                   @Override
                   public void onClick(DialogInterface dialog, int which) {

                   }
               });

               builder.create().show();
           }
       });



        initBook();

    }

    private void AddtoBookshelf(Book book) {
        AsyncHttpClient client =new AsyncHttpClient();
        String url = "http://47.94.229.72:8080/Fooks/AddBookshelfServlet";//url组成：ip:端口 + 服务端工程名 + servlet名
        RequestParams params = new RequestParams();
        params.put("username",mUsername);
        params.put("bookName",book.getBookName());
        client.post(url, params, new AsyncHttpResponseHandler() {
            @Override
            public void onSuccess(int i, Header[] headers, byte[] bytes) {
                if(i == 200) {
                    try {
                        String result = new String(bytes, "utf-8");
                        try {
                            JSONObject jsonObject = new JSONObject(result);
                            int s = jsonObject.getInt("result");
                            switch (s) {
                                case 0:
                                    Toast.makeText(getApplicationContext(), "加入书架失败", Toast.LENGTH_LONG).show();
                                    break;
                                case 1:
                                    Toast.makeText(getApplicationContext(), "加入书架成功", Toast.LENGTH_LONG).show();
                                    break;
                                default:
                                    Toast.makeText(getApplicationContext(), "未知错误", Toast.LENGTH_LONG).show();
                                    break;
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }

                        Toast.makeText(ListActivity.this, result, Toast.LENGTH_SHORT).show();
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    }

                }
            }

            @Override
            public void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {
                Toast.makeText(getApplicationContext(),"请求失败，请检查网络",Toast.LENGTH_LONG).show();
            }
        });
    }

    private void initBook(){

        //获取数据
        AsyncHttpClient client =new AsyncHttpClient();
        String url = "http://47.94.229.72:8080/Fooks/BookListServlet";//url组成：ip:端口 + 服务端工程名 + servlet名
        RequestParams params = new RequestParams();
        params.put("username",mUsername);
        client.post(url, params, new AsyncHttpResponseHandler() {
            @Override
            public void onSuccess(int i, Header[] headers, byte[] bytes) {
                if(i == 200) {
                    try {
                        String result = new String(bytes,"utf-8");
                        Log.e(TAG,"返回结果"+result);
                        try {
                            JSONArray jsonArray = new JSONArray(result);
                            for(int j=0;j<jsonArray.length();j++){
                                JSONObject jsonObject=jsonArray.getJSONObject(j);
                                Book book =new Book();
                                book.setId(jsonObject.getInt("id"));
                                book.setBookName(jsonObject.getString("bookName"));
                                book.setBookPath(jsonObject.getString("bookPath"));
                                book.setCreateUser(jsonObject.getString("createUser"));
                                book.setCreateDate(jsonObject.getString("createDate"));
                                mShowBooks.add(book);
                            }
                            mShopsAdapter=new ShopsAdapter(mShowBooks,ListActivity.this);
                            mListView.setAdapter(mShopsAdapter);

                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    }

                }
            }

            @Override
            public void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {
                Toast.makeText(getApplicationContext(),"请求失败，请检查网络",Toast.LENGTH_LONG).show();
            }
        });
    }
}