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(); } }); } }
