android 读取excel表格数据，并存入数据库

最近策划提了个需求，但是已有的数据不能满足需要，于是内容资源部制作了份excel表格补充。So，任务来了，读取并使用excel数据。由于感觉excel表格里的数据使用频率较高，那么就不能等到需要了才去读取excel，所以决定采用先把excel读取出来写进数据库然后再读取数据库的方式。Just do it !
首先，根据excel表格创建对象：

package com.eebbk.englishpointread.extravoice;

public class ExtraVoiceInfo {
    private int id;
    /**
     * 单词内容
     */
    private String content;
    /**
     * 音标
     */
    private String phonetic;
    /**
     * 词性
     */
    private String property;
    /**
     * 释义
     */
    private String paraphrase;
    /**
     * 美式发音名称
     */
    private String usVoiceName;
    /**
     * 英式发音名称
     */
    private String ukVoiceName;

    public ExtraVoiceInfo() {
    }

    public ExtraVoiceInfo(int id, String content, String phonetic, String property, String paraphrase,
            String usVoiceName, String ukVoiceName) {
        super();
        this.id = id;
        this.content = content;
        this.phonetic = phonetic;
        this.property = property;
        this.paraphrase = paraphrase;
        this.usVoiceName = usVoiceName;
        this.ukVoiceName = ukVoiceName;
    }

    public ExtraVoiceInfo(String content, String phonetic, String property, String paraphrase, String usVoiceName,
            String ukVoiceName) {
        super();
        this.content = content;
        this.phonetic = phonetic;
        this.property = property;
        this.paraphrase = paraphrase;
        this.usVoiceName = usVoiceName;
        this.ukVoiceName = ukVoiceName;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getPhonetic() {
        return phonetic;
    }

    public void setPhonetic(String phonetic) {
        this.phonetic = phonetic;
    }

    public String getProperty() {
        return property;
    }

    public void setProperty(String property) {
        this.property = property;
    }

    public String getParaphrase() {
        return paraphrase;
    }

    public void setParaphrase(String paraphrase) {
        this.paraphrase = paraphrase;
    }

    public String getUsVoiceName() {
        return usVoiceName;
    }

    public void setUsVoiceName(String usVoiceName) {
        this.usVoiceName = usVoiceName;
    }

    public String getUkVoiceName() {
        return ukVoiceName;
    }

    public void setUkVoiceName(String ukVoiceName) {
        this.ukVoiceName = ukVoiceName;
    }

    @Override
    public String toString() {
        return "content:" + content + "   phonetic:" + phonetic + "   property:" + property + "   paraphrase:"
                + paraphrase + "   usVoiceName:" + usVoiceName + "   ukVoiceName:" + ukVoiceName;
    }

}

然后，创建数据库：

package com.eebbk.englishpointread.extravoice;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

/**
 * 配置数据库操作帮助类
 * 
 * */
public class ExtraVoiceDBHelper extends SQLiteOpenHelper {
    
    public static final String TABLE_EXTRA_VOICE_INFO = "ExtraVoiceInfo";
    public static String DATA_BASE_NAME = "ExtraVoiceCfg.db";
    private static final int VERSION = 1;
    private static ExtraVoiceDBHelper instance;
        
    public static ExtraVoiceDBHelper getInstance( Context context ) {
        if (instance == null) {
            instance = new ExtraVoiceDBHelper( context );
        }
        return instance;
    }
    
    public ExtraVoiceDBHelper(Context context){
        super(context, DATA_BASE_NAME, null, VERSION);
    }
    
    @Override
    public void onCreate(SQLiteDatabase db) {
        createTableUser(db);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        updateTableUser(db, oldVersion, newVersion);
    }
        
    /**
     * 创建用户表
     * 
     * */
    public void createTableUser(SQLiteDatabase db){
        db.execSQL("CREATE TABLE IF NOT EXISTS " + TABLE_EXTRA_VOICE_INFO + " (_id INTEGER PRIMARY KEY AUTOINCREMENT"
                + ",content TEXT NOT NULL, phonetic TEXT ,property TEXT, paraphrase TEXT ,usVoiceName TEXT NOT NULL, ukVoiceName TEXT NOT NULL)" );
    }
    
    /**
     * 更新用户表
     * 
     * */
    public void updateTableUser(SQLiteDatabase db, int oldVersion, int newVersion){
        if ( oldVersion != newVersion ){
            db.execSQL( "DROP TABLE IF EXISTS " + TABLE_EXTRA_VOICE_INFO );
            createTableUser(db);
        }
    }
}

接着就开始读取excel数据了：

package com.eebbk.englishpointread.extravoice;

import java.io.InputStream;

import com.eebbk.englishwords.reader.util.ConstData;
import com.eebbk.open.common.util.PreferencesUtils;

import jxl.Sheet;
import jxl.Workbook;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.util.Log;

public class ExtraVoiceDBManager {
    private static final String TAG = "ExtraVoiceDBManager";
    private static final String EXCEPTION = "exception";
    private ExtraVoiceDBHelper mDBHelper = null;
    private static ExtraVoiceDBManager instance = null;

    public static ExtraVoiceDBManager getInstance(Context context) {
        if (instance == null) {
            instance = new ExtraVoiceDBManager(context.getApplicationContext());
        }
        return instance;
    }

    private ExtraVoiceDBManager(Context context) {
        mDBHelper = ExtraVoiceDBHelper.getInstance(context);
        if (PreferencesUtils.getBoolean(context, ConstData.IS_READED_EXTRA_SOUND_DATA, true)) {
            readExcelToDB(context);
        }
    }

    /**
     * 读取excel数据到数据库里
     * @param context
     */
    private void readExcelToDB(Context context) {
        try {
            InputStream is = context.getAssets().open("syncenglish_extra_voice_data.xls");
            Workbook book = Workbook.getWorkbook(is);
            book.getNumberOfSheets();
            // 获得第一个工作表对象
            Sheet sheet = book.getSheet(0);
            int Rows = sheet.getRows();
            ExtraVoiceInfo info = null;
            for (int i = 1; i < Rows; ++i) {
                String content = (sheet.getCell(0, i)).getContents();
                String phonetic = (sheet.getCell(1, i)).getContents();
                String property = (sheet.getCell(2, i)).getContents();
                String paraphrase = (sheet.getCell(3, i)).getContents();
                String usVoiceName = (sheet.getCell(4, i)).getContents();
                String ukVoiceName = (sheet.getCell(5, i)).getContents();

                info = new ExtraVoiceInfo(content, phonetic, property, paraphrase, usVoiceName, ukVoiceName);
                saveInfoToDataBase(info);
            }
            book.close();
            PreferencesUtils.putBoolean(context, ConstData.IS_READED_EXTRA_SOUND_DATA, false);
        } catch (Exception e) {
            PreferencesUtils.putBoolean(context, ConstData.IS_READED_EXTRA_SOUND_DATA, true);
            Log.e(TAG, EXCEPTION, e);
        }
    }

    /**
     * 保存该条数据到数据库
     * @param info excel中的某条数据
     */
    private void saveInfoToDataBase(ExtraVoiceInfo info) {
        if (mDBHelper == null) {
            return;
        }
        SQLiteDatabase db = mDBHelper.getWritableDatabase();
        try {
            ContentValues values = new ContentValues();
            values.put("content", info.getContent());
            values.put("phonetic", info.getPhonetic());
            values.put("property", info.getProperty());
            values.put("paraphrase", info.getParaphrase());
            values.put("usVoiceName", info.getUsVoiceName());
            values.put("ukVoiceName", info.getUkVoiceName());
            db.insert(ExtraVoiceDBHelper.TABLE_EXTRA_VOICE_INFO, null, values);
        } catch (SQLiteException e) {
            Log.e(TAG, EXCEPTION, e);
        } catch (Exception e){
            Log.e(TAG, EXCEPTION, e);           
        } finally {
            if (db != null) {
                db.close();
            }
        }
    }

    /**
     * 根据内容获取 整条数据(ExtraVoiceInfo)
     * @param contentStr
     * @return
     */
    public ExtraVoiceInfo getExtraVoiceInfo(String contentStr) {
        ExtraVoiceInfo info = null;
        if (mDBHelper == null) {
            return info;
        }

        SQLiteDatabase db = mDBHelper.getReadableDatabase();

        if (db == null) {
            return info;
        }

        Cursor cursor = db.rawQuery("select * from ExtraVoiceInfo where content = ?", new String[] { contentStr });

        try {
            if (cursor != null && cursor.moveToFirst()) {
                do {
                    String content = cursor.getString(cursor.getColumnIndex("content"));
                    String phonetic = cursor.getString(cursor.getColumnIndex("phonetic"));
                    String property = cursor.getString(cursor.getColumnIndex("property"));
                    String paraphrase = cursor.getString(cursor.getColumnIndex("paraphrase"));
                    String usVoiceName = cursor.getString(cursor.getColumnIndex("usVoiceName"));
                    String ukVoiceName = cursor.getString(cursor.getColumnIndex("ukVoiceName"));

                    info = new ExtraVoiceInfo(content, phonetic, property, paraphrase, usVoiceName, ukVoiceName);
                } while (cursor.moveToNext());
            }

        } catch (SQLiteException e) {
            Log.e(TAG, EXCEPTION, e);
        }  catch (Exception e){
            Log.e(TAG, EXCEPTION, e);           
        } finally {
            if (cursor != null) {
                cursor.close();
                cursor = null;
            }
            if (db != null) {
                db.close();
            }
        }
        return info;
    }
}

最后我采用AsyncTask来进行excel读取保存到数据库：

package com.eebbk.englishpointread.extravoice;

import android.content.Context;
import android.os.AsyncTask;

public class ExtraVoiceAsynTask extends AsyncTask<Void, Void, Void> {
    
    private Context mContext = null;
    private ExtraVoiceDBManager dbManager = null;
    
    public ExtraVoiceAsynTask(Context context) {
        this.mContext = context;
    }

    @Override
    protected Void doInBackground(Void... params) {
        dbManager = ExtraVoiceDBManager.getInstance(mContext);
        return null;
    }

}

在需要使用excel中的数据时，通过调用

ExtraVoiceInfo info = mDbManager.getExtraVoiceInfo(clickTextStr);

获取到ExtraVoiceInfo 对象，然后对ExtraVoiceInfo 对象进行相应操作处理。

注意事项：
读取excel表格保存到数据里，需要再AndroidManifest.xml中添加相应权限：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

因为是异步读取，而异步是不可靠的任务序列，所以无法保证读取的正确性。后来我改为在demo里读取excel，然后把生成的.db文件拷贝到需要用到的工程的Asset文件中，然后再从Asset读取db文件，这样会靠谱点。

附上demo地址：

https://gitee.com/zhangshao45612/FileToDbDemo

Or:

https://github.com/zhangshao45612/FileToDbDemo

小礼物走一走，来简书关注

作者：张少杰
链接：https://www.jianshu.com/p/00d4b6901c60
來源：简书
简书著作权归作者所有，任何形式的转载都请联系作者获得授权并注明出处。