第二阶段（冲刺四）

徐利峰：

今天完成的任务是：实现将整个动态发表的信息上传至服务器。

其中遇到的困难有：

①上传服务器中文乱码问题，解决方案为jdbc:mysql://localhost:3306/baixiaosheng?useUnicode=true&characterEncoding=UTF-8

②传输图片时的文本过长，导致传入的数据只有部分存储到数据库，改变imgurl的存储格式为text

Android端代码：

package com.lh.std_everything.ui.home.hometype.dongtai;

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

import android.app.Activity;
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.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
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.HomeFragment;
import com.lh.std_everything.ui.home.hometype.blog.WriteViewModel;
import com.lh.std_everything.ui.home.hometype.news.shownews.ShowNewsActivity;

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 DongTaiActivity extends AppCompatActivity implements View.OnClickListener{
    private static final int REQUEST_IMAGE = 2;
    private int maxNum = 9;
    private Button submit;
    private EditText text;
    Unbinder unbinder;
    ProgressBar progressBar;
    @BindView(R.id.rv_images)
    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_dong_tai);
        unbinder = ButterKnife.bind(this);
        submit=findViewById(R.id.submit);
        text=findViewById(R.id.text);
        progressBar=findViewById(R.id.progressBar);
        mSelect = new ArrayList<>();
        submit.setOnClickListener(this);
        initView();
    }
    private void initView() {
        rvImages.setLayoutManager(new GridLayoutManager(this, 3));
        adapter = new NineGridAdapter(DongTaiActivity.this, mSelect, rvImages);
        adapter.setMaxSize(maxNum);
        rvImages.setAdapter(adapter);
        adapter.setOnAddPicturesListener(new OnAddPicturesListener() {
            @Override
            public void onAdd() {
                pickImage();
            }
        });
    }

    /*上传发动态的信息和照片到服务器
     */
    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.submit:
                final String daongtaitext=text.getText().toString();
                if(daongtaitext.isEmpty()){
                    Toast.makeText(DongTaiActivity.this, "动态内容不能为空", Toast.LENGTH_SHORT).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) {
                                    writeDongTaiImg(select.get(uploadnum));
                                } else {
                                    Toast.makeText(DongTaiActivity.this, "上传成功", Toast.LENGTH_SHORT).show();
                                    progressBar.setVisibility(View.GONE);
                                }
                                break;
                            case 404:
                                Toast.makeText(DongTaiActivity.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="";
                        String context=text.getText().toString();
                        Log.i("输入的文本：", ""+context);
                        String url ="http://116.62.178.231:8080/BaiXiaoSheng/adddongtai?username="+MainActivity.getUsername()+"&text="+context;
                        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() {
                        DongTaiActivity.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*/
                        String context=text.getText().toString();
                        urlimg = "http://116.62.178.231:8080/BaiXiaoSheng/downloadimg?username="+MainActivity.getUsername()+"&text="+context;
                        handle.sendEmptyMessage(100);
                    }
                }).start();
        }
    }
    /*上传图片*/
    private void writeDongTaiImg(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;
                DongTaiActivity.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();
    }

}

View Code