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):

https://github.com/jhy/jsoup

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<>();@Overrideprotected 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ElementEpubBean 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);}}@Overridepublic ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {View view = mInflater.inflate(R.layout.item, null);ViewHolder holder = new ViewHolder(view);return holder;}@Overridepublic void onBindViewHolder(ViewHolder holder, final int position) {holder.mTextView.setText(mStrings.get(position).tilte);holder.mTextView.setOnClickListener(new View.OnClickListener() {@Overridepublic 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);}});}@Overridepublic 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;@Overrideprotected 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