android 使用epublib开源框架解析epub文件（章节内容、书籍菜单）

前期准备

Slf4j-android :
http://www.slf4j.org/android/

epublib-core-latest.jar ：
https://github.com/downloads/psiegman/epublib/epublib-core-latest.jar (如果不能下载，试试这里)

jsoup(可以可把html标签，解析为对象):

进入正题

如果你是吧 .equb 格式的文件放到 assets 文件下，你可以这样获取book对象。

MainActivity.java

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
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 com.example.epubdaemon.utils.StringUtils;
import com.example.epubdaemon.utils.TimeUtils;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;
import nl.siegmann.epublib.domain.Book;
import nl.siegmann.epublib.domain.Metadata;
import nl.siegmann.epublib.domain.Resource;
import nl.siegmann.epublib.domain.Spine;
import nl.siegmann.epublib.domain.SpineReference;
import nl.siegmann.epublib.epub.EpubReader;

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "MainActivity";
    @BindView(R.id.image)
    ImageView mImage;
    @BindView(R.id.tv_text)
    TextView mTvText;
    @BindView(R.id.recycler)
    RecyclerView mRecycler;
    private Book book;

    private MyAdatper mAdatper;

    private List<EpubBean> indexTitleList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);

        initView();

    }


    private void initView() {
        mRecycler.setLayoutManager(new LinearLayoutManager(this));
        mAdatper = new MyAdatper(indexTitleList, this);
        mRecycler.setAdapter(mAdatper);

        try {
            EpubReader reader = new EpubReader();
            InputStream in = getAssets().open("176116.epub");
            book = reader.readEpub(in);

            //获取封面图方法一：
           /* Bitmap coverImage = BitmapFactory.decodeStream(book.getCoverImage().getInputStream());
            if (coverImage!=null) {
                mImageView.setImageBitmap(coverImage);
            }else {
                Log.i(TAG, "onCreate: mImageView is null");
            }*/
            //  获取封面图方法二：
            /*nl.siegmann.epublib.domain.Resources resources = book.getResources();
            Resource res = resources.getById("cover");
            byte[] data = res.getData();
            Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
            mImage.setImageBitmap(bitmap);*/


            Metadata metadata = book.getMetadata();

            StringBuffer buffer = new StringBuffer();
            for (String s : metadata.getDescriptions()) {
                buffer.append(s + " ");
            }


            /*String bookInfo = "作者：" + metadata.getAuthors() +
                    "\n出版社：" + metadata.getPublishers() +
                    "\n出版时间：" + metadata.getDates() +
                    "\n书名：" + metadata.getTitles() +
                    "\n简介：" + metadata.getDescriptions() +
                    "\n语言：" + metadata.getLanguage() +
                    "\n\n封面图：";*/

            String bookInfo = "作者：" + metadata.getAuthors().get(0) +
                    "\n出版社：" + metadata.getPublishers().get(0) +
                    "\n出版时间：" + TimeUtils.getStringData(metadata.getDates().get(0).getValue()) +
                    "\n书名：" + metadata.getTitles().get(0) +
                    "\n简介：" + metadata.getDescriptions().get(0) +
                    "\n语言：" + metadata.getLanguage() +
                    "\n\n封面图：";

            mTvText.setText(bookInfo);

            // Log.i(TAG, "onCreate: bookInfo=" + bookInfo);


            // 书籍的阅读顺序，是一个线性的顺序。通过Spine可以知道应该按照怎样的章节,顺序去阅读，
            // 并且通过Spine可以找到对应章节的内容。
            Spine spine = book.getSpine();

            List<SpineReference> spineReferences = spine.getSpineReferences();
            if (spineReferences != null && spineReferences.size() > 0) {
                Resource resource = spineReferences.get(1).getResource();//获取带章节信息的那个html页面

                Log.i(TAG, "initView: ddd=" + resource.getId() + "  " + resource.getTitle() + "  " + resource.getSize() + " ");

                byte[] data = resource.getData();//和 resource.getInputStream() 返回的都是html格式的文章内容，只不过读取方式不一样
                String strHtml = StringUtils.bytes2Hex(data);
                Log.i(TAG, "initView: strHtml= " + strHtml);

                parseHtmlData(strHtml);


              /*  InputStream inputStream = resource.getInputStream();
                String strHtml = StringUtils.convertStreamToString(inputStream);
                Log.i(TAG, "initView: strHtml=" + strHtml);*/


            } else {
                Log.i(TAG, "initView: spineReferences is null");
            }


            // 获取所有章节内容。测试发现和 spine.getSpineReferences() 效果差不多
           /* List<Resource> contents = book.getContents();
            if (contents != null && contents.size() > 0) {
                try {
                    Resource resource = contents.get(1);
                    //byte[] data = resource.getData();
                    InputStream inputStream = resource.getInputStream();
                    String dddd = StringUtils.convertStreamToString(inputStream);
                    Log.i(TAG, "onCreate: dddd=" + dddd);
                    //mTextView.setText(Html.fromHtml(dddd));
                    //  mWebView.loadDataWithBaseURL(null, dddd, "text/html", "utf-8", null);

                } catch (IOException e) {
                    e.printStackTrace();
                }
            } else {
                Log.i(TAG, "onCreate: contents is null");
            }*/


        } catch (Exception e) {
            e.printStackTrace();
        }


    }


    /**
     * 解析html
     */
    private void parseHtmlData(String strHtml) throws IOException {
        Document doc = Jsoup.parse(strHtml);

        Log.i(TAG, "parseHtmlData:  doc.title();=" + doc.title());

        Elements eles = doc.getElementsByTag("a"); // a标签
        // 遍历Elements的每个Element
        EpubBean epubBean;
        for (Element link : eles) {
            String linkHref = link.attr("href"); // a标签的href属性
            String text = link.text();
            epubBean = new EpubBean();
            epubBean.href = linkHref;
            epubBean.tilte = text;
            indexTitleList.add(epubBean);
            //Log.i(TAG, "parseHtmlData: linkHref=" + linkHref + " text=" + text);
        }


    }


    private class MyAdatper extends RecyclerView.Adapter<MyAdatper.ViewHolder> {

        private final LayoutInflater mInflater;
        private List<EpubBean> mStrings;

        public MyAdatper(List<EpubBean> mStrings, Context context) {
            this.mStrings = mStrings;
            mInflater = LayoutInflater.from(context);
        }


        public class ViewHolder extends RecyclerView.ViewHolder {
            TextView mTextView;

            public ViewHolder(View itemView) {
                super(itemView);
                mTextView = (TextView) itemView.findViewById(R.id.title);
            }

        }

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = mInflater.inflate(R.layout.item, null);
            ViewHolder holder = new ViewHolder(view);
            return holder;
        }

        @Override
        public void onBindViewHolder(ViewHolder holder, final int position) {
            holder.mTextView.setText(mStrings.get(position).tilte);
            holder.mTextView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //通过href获取
                    String href = mStrings.get(position).href;

                    Intent intent = new Intent(MainActivity.this, ChapterDetailActivity.class);
                    intent.putExtra("href", href);
                    startActivity(intent);


                }
            });
        }

        @Override
        public int getItemCount() {
            return mStrings.size();
        }


    }


}

布局： R.layout.activity_main :

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ImageView
            android:id="@+id/image"
            android:layout_width="100dp"
            android:layout_height="150dp"
            android:src="@mipmap/ic_launcher"/>

        <TextView
            android:id="@+id/tv_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:text="内容描述dddd"/>

    </LinearLayout>


    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

adapter的item布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#fff"
    android:orientation="vertical">

    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="#fff"
        android:gravity="center_vertical"
        android:paddingLeft="10dp"
        android:text="ddd"/>

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#eee"/>

</LinearLayout>

EpubBean.java

public class EpubBean {
    public String tilte;
    public String href;

}

ChapterDetailActivity.java

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.webkit.WebView;

import com.example.epubdaemon.utils.StringUtils;

import java.io.IOException;
import java.io.InputStream;

import butterknife.BindView;
import butterknife.ButterKnife;
import nl.siegmann.epublib.domain.Book;
import nl.siegmann.epublib.domain.Resource;
import nl.siegmann.epublib.epub.EpubReader;

public class ChapterDetailActivity extends AppCompatActivity {
    private static final String TAG = "ChapterDetailActivity";
    @BindView(R.id.webView)
    WebView mWebView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_chapter_detail);
        ButterKnife.bind(this);

        String href = getIntent().getStringExtra("href");
        Log.i(TAG, "onCreate: href=" + href);
        try {
            EpubReader reader = new EpubReader();
            InputStream in = getAssets().open("176116.epub");
            Book book = reader.readEpub(in);
            Resource byHref = book.getResources().getByHref(href);

            byte[] data = byHref.getData();   //和 resource.getInputStream() 返回的都是html格式的文章内容，只不过读取方式不一样
            String strHtml1 = StringUtils.bytes2Hex(data);
            //Log.i(TAG, "initView: strHtml1111= " + strHtml1);


            mWebView.getSettings().setJavaScriptEnabled(true);
            mWebView.loadDataWithBaseURL(null, strHtml1, "text/html", "utf-8", null);


        } catch (IOException e) {
            e.printStackTrace();
        }


    }
}

布局：R.layout.activity_chapter_detail

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <WebView
        android:id="@+id/webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></WebView>

</LinearLayout>

StringUtils.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;

/**
 * Created by yuanpk on 2018/4/26  8:43
 * <p>
 * Description:TODO
 */

public class StringUtils {

    public static String convertStreamToString(InputStream is) {
        /*
          * To convert the InputStream to String we use the BufferedReader.readLine()
          * method. We iterate until the BufferedReader return null which means
          * there's no more data to read. Each line will appended to a StringBuilder
          * and returned as String.
          */
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return sb.toString();
    }


    public static String bytes2Hex(byte[] bs) {
        if (bs == null || bs.length <= 0) {
            return null;
        }
        Charset charset = Charset.defaultCharset();
        ByteBuffer buf = ByteBuffer.wrap(bs);
        CharBuffer cBuf = charset.decode(buf);

        return cBuf.toString();


    }
}

最后，176116.epub 的这个文件和相应工具类就不在列出了，可以到下面的 “源码下载” 中去下载。

源码下载

参考博客：

这篇文章写不错：
使用epublib解析epub文件（章节内容、书籍菜单）

android平台解析epub格式的书籍信息

Android Jsoup：实现HTML解析和Epub解析

epublib git地址：
https://github.com/psiegman/epublib

官方网站：
http://www.siegmann.nl/epublib

下面的这两个还没有做了解，先放到这里吧：
epublib解析
 epub3reader

android 使用epublib开源框架解析epub文件（章节内容、书籍菜单）

前期准备

进入正题

源码下载

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