冲刺二十天

实现书籍课后题章节上传以及查看所有图书

上传书籍课后题章节答案

通过图书名，作者名和出版社来区分图书，其中上传的图书分类：图书图片，第一章，第二章，第三章。。。。

 

package com.lh.std_everything.ui.home.hometype.studyshare.share;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.Spinner;
import android.widget.Toast;

import com.giftedcat.easylib.selector.MultiImageSelector;
import com.lh.std_everything.HttpUtil.HttpUtil;
import com.lh.std_everything.MainActivity;
import com.lh.std_everything.R;
import com.lh.std_everything.ui.home.hometype.dongtai.DongTaiActivity;
import com.lh.std_everything.ui.home.hometype.dongtai.NineGridAdapter;
import com.lh.std_everything.ui.home.hometype.dongtai.OnAddPicturesListener;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.Unbinder;

public class bookuploadActivity extends AppCompatActivity implements View.OnClickListener{
    public EditText ed_title,ed_author,ed_publish;
    public Spinner spinner;
    public List<String> list=new ArrayList<>();
    public ArrayAdapter<String> sadapter;
    String selectString;
    public ImageView submit;
    public String title;
    public String author;
    public String publish;
    /*图片选取相关参数*/
    private static final int REQUEST_IMAGE = 2;
    private int maxNum = 9;
    Unbinder unbinder;
    ProgressBar progressBar;
    public RecyclerView rvImages;
    private Handler handle;
    NineGridAdapter adapter;
    private int uploadnum=0;
    private int size;
    private String urlimg;
    private List<String> select;
    List<String> mSelect;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_bookupload);
        init();
        /*下拉框选择*/
        list.add("图书照片");
        list.add("第一章");
        list.add("第二章");
        list.add("第三章");
        list.add("第四章");
        list.add("第五章");
        list.add("第六章");
        list.add("第七章");
        list.add("第八章");
        list.add("第九章");
        list.add("第十章");
        list.add("其他");
        sadapter=new ArrayAdapter<>(this,android.R.layout.simple_spinner_item,list);
        sadapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(sadapter);
        spinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener(){

            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                selectString=sadapter.getItem(position);
                view.setVisibility(View.VISIBLE);
                //Toast.makeText(bookuploadActivity.this,selectString,Toast.LENGTH_LONG).show();
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                selectString="NONE";
                parent.setVisibility(View.VISIBLE);
            }
        });

        /*上传*/
        submit.setOnClickListener(this);



    }

    public void init()
    {
        ed_title=findViewById(R.id.ed_booktitle);
        ed_author=findViewById(R.id.ed_bookauthor);
        ed_publish=findViewById(R.id.ed_bookpublish);
        spinner=findViewById(R.id.spinner1);
        rvImages=findViewById(R.id.rv_imgs);
        unbinder = ButterKnife.bind(this);
        submit=findViewById(R.id.submit);
        progressBar=findViewById(R.id.progressBar);
        mSelect = new ArrayList<>();

        rvImages.setLayoutManager(new GridLayoutManager(this, 3));
        adapter = new NineGridAdapter(bookuploadActivity.this, mSelect, rvImages);
        adapter.setMaxSize(maxNum);
        rvImages.setAdapter(adapter);
        adapter.setOnAddPicturesListener(new OnAddPicturesListener() {
            @Override
            public void onAdd() {
                pickImage();
            }
        });
    }

    /*上传图书信息*/
    @Override
    public void onClick(View v) {
        switch (v.getId())
        {
            case R.id.submit:
                 title=ed_title.getText().toString();
                 author=ed_author.getText().toString();
                 publish=ed_publish.getText().toString();
                if(title.equals("") || author.equals("") || publish.equals("")|| selectString.equals(""))
                {
                    Toast.makeText(bookuploadActivity.this,"请填写完整图书信息！",Toast.LENGTH_LONG).show();
                    return;
                }
                String username= MainActivity.getUsername();
                handle = new Handler(new Handler.Callback() {
                    @Override
                    public boolean handleMessage(@NonNull Message msg) {
                        switch (msg.what) {
                            case 100:
                                if (uploadnum < size) {
                                    writeBookImg(select.get(uploadnum));
                                } else {
                                    Toast.makeText(bookuploadActivity.this, "上传成功", Toast.LENGTH_SHORT).show();
                                    progressBar.setVisibility(View.GONE);
                                }
                                break;
                            case 404:
                                Toast.makeText(bookuploadActivity.this, "上传失败,您可以点击上传按钮重新上传", Toast.LENGTH_SHORT).show();
                                progressBar.setVisibility(View.GONE);
                                break;
                            default:
                                break;
                        }
                        return true;
                    }
                });
                /*将动态写到服务器*/
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        String req="";
                        Log.i("输入的文本：", ""+title+" "+author+" "+" "+publish+" "+selectString);
                        String url2 ="http://116.62.178.231:8080/BaiXiaoSheng/findbook?username="+ MainActivity.getUsername()+"&title="+title+"&author="+author+"&publish="+publish;
                        String ms=String.valueOf(HttpUtil.sendPost(url2,req));
                        if(ms.equals("no"))
                        {
                            String url ="http://116.62.178.231:8080/BaiXiaoSheng/addbook?username="+ MainActivity.getUsername()+"&title="+title+"&author="+author+"&publish="+publish;
                            Log.i("url:", ""+url);
                            String msg=String.valueOf(HttpUtil.sendPost(url,req));
                            Log.d("文字上传：",msg);
                        }
                    }
                }).start();

                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        bookuploadActivity.this.runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                progressBar.setVisibility(View.VISIBLE);
                                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                                    progressBar.setTooltipText("正在上传...");
                                }
                            }
                        });
                        /*将图片一张一张上传到服务器*/
                        urlimg = "http://116.62.178.231:8080/BaiXiaoSheng/downloadbook?title="+title+"&select="+selectString+"&bookauthor="+author+"&username="+MainActivity.getUsername();
                        handle.sendEmptyMessage(100);
                    }
                }).start();

        }
    }

    /*上传图片*/
    private void writeBookImg(final String img) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                Log.i("图片地址：", img);
                Map<String, File> fileMap = new HashMap<String, File>();
                fileMap.put("file", new File(img));
                String msg = null;
                try {
                    msg = HttpUtil.sendPostImg(urlimg, fileMap);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                uploadnum++;
                Log.i("当前已上传照片数：", ""+uploadnum);
                final String finalMsg = msg;
                bookuploadActivity.this.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Log.e("服务器返回信息：", ""+finalMsg);
                        if (finalMsg.equals("yes")) {
                            Log.d("tag", finalMsg);
                            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                                progressBar.setTooltipText("图片进度:" + uploadnum + "/" + size);
                            }
                            handle.sendEmptyMessage(100);
                        } else {
                            uploadnum = 0;
                            handle.sendEmptyMessage(404);
                        }
                    }
                });
            }
        }).start();
    }

    /**
     * 选择添加图片
     */
    private void pickImage() {
        MultiImageSelector selector = MultiImageSelector.create(this);
        selector.showCamera(true);
        selector.count(maxNum);
        selector.multi();
        selector.origin(mSelect);
        selector.start(this, REQUEST_IMAGE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_IMAGE) {
            if (resultCode == RESULT_OK) {
                select = data.getStringArrayListExtra(MultiImageSelector.EXTRA_RESULT);
                size=select.size()-1;
                Log.i("照片总数：", ""+size);
                mSelect.clear();
                mSelect.addAll(select);
                adapter.notifyDataSetChanged();
            }
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unbinder.unbind();
    }

}

服务器端图书章节的存储形式：

 点开后是存储的信息：图书照片，第一章，第二章。。。。

查看所有图书

BookListActivity

package com.lh.std_everything.ui.home.hometype.studyshare.share;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;

import com.lh.std_everything.HttpUtil.HttpUtil;
import com.lh.std_everything.R;
import com.lh.std_everything.ui.home.hometype.news.adapter.NewsAdapter;

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

public class BookListActivity extends AppCompatActivity {
    public ImageView upload,search;
    public RecyclerView rc_book;
    public BooksAdapter adapter;
    private Handler handler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_book_list);
        init();
        upload.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(BookListActivity.this,bookuploadActivity.class);
                startActivity(intent);
            }
        });
        rc_book.setLayoutManager(new LinearLayoutManager(BookListActivity.this));
        adapter = new BooksAdapter();
        getThreadData();
        handler = new Handler(new Handler.Callback() {
            @Override
            public boolean handleMessage(@NonNull Message msg) {     //线程回调更新数据
                if (msg.what == 200) {
                    adapter.setJsonArray((JSONArray) msg.obj);
                    rc_book.setAdapter(adapter);
                }
                return true;
            }
        });

    }
    public void init()
    {
        upload=findViewById(R.id.uploadimg);
        search=findViewById(R.id.searchimg);
        rc_book=findViewById(R.id.bookrv);
    }

    private void getThreadData() {                     //线程封装网络请求
        new Thread(new Runnable() {
            @Override
            public void run() {
                String reqdata = "";
                String address="http://116.62.178.231:8080/BaiXiaoSheng/getallbooks";
                try {
                    final JSONArray json = new JSONArray(String.valueOf(HttpUtil.sendPost(address, reqdata)));
                    Log.d("tag", json.toString());
                    Message msg = new Message();
                    msg.what = 200;
                    msg.obj = json;
                    handler.sendMessage(msg);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
}

BooksAdapter

package com.lh.std_everything.ui.home.hometype.studyshare.share;

import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;
import com.lh.std_everything.R;
import com.lh.std_everything.ui.home.hometype.news.adapter.NewsAdapter;

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

public class BooksAdapter extends RecyclerView.Adapter<BooksAdapter.MyViewHolder>{
    JSONArray jsonArray=new JSONArray();
    private View itemview;
    public void setJsonArray(JSONArray jsonArray) {
        this.jsonArray = jsonArray;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        LayoutInflater layoutInflater=LayoutInflater.from(parent.getContext());
        itemview=layoutInflater.inflate(R.layout.cell_book,parent,false);
        return new BooksAdapter.MyViewHolder(itemview);
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        JSONObject bean=null;
        try {
            bean= jsonArray.getJSONObject(position);
            holder.textViewName.setText(bean.getString("bookname"));
            holder.textViewAuthor.setText(bean.getString("bookauthor"));
            holder.textViewPublish.setText(bean.getString("bookpublish"));
            String []urls=bean.getString("head").split("\$");
            RequestOptions options = new RequestOptions()
                    .error(R.drawable.error)
                    .placeholder(R.drawable.loading);
            if(urls.length!=0) {
                for(int i=0;i<urls.length;i++)
                {
                    if(!urls[i].equals("null"))
                    {
                        Log.i("url",urls[i]);
                        Glide.with(itemview)
                                .load(urls[i])
                                .apply(options)
                                .into(holder.bookphoto);
                        break;
                    }
                }
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

            }
        });

    }

    @Override
    public int getItemCount() {
        return jsonArray.length();
    }


    static class MyViewHolder extends RecyclerView.ViewHolder{
        ImageView bookphoto;
        TextView textViewName,textViewAuthor,textViewPublish;
        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            bookphoto=itemView.findViewById(R.id.bookimg);
            textViewName=itemView.findViewById(R.id.booktitle);
            textViewAuthor=itemView.findViewById(R.id.bookauthor);
            textViewPublish= itemView.findViewById(R.id.bookpublish);
        }
    }
}

明天任务：

做点击图书后到：图书详细信息展示，包含章节展示。

点击对应的章节可查看相应的章节答案