393 lines
15 KiB
Java
393 lines
15 KiB
Java
package com.yudianbank.utils;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.github.junrar.Archive;
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import com.github.junrar.exception.RarException;
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import com.github.junrar.rarfile.FileHeader;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Maps;
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import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
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import org.apache.commons.compress.archivers.zip.ZipFile;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Component;
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import java.io.*;
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import java.util.*;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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/**
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*
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* @author yudian-it
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* @date 2017/11/27
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*/
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@Component
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public class ZipReader {
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@Autowired
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FileUtils fileUtils;
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@Value("${file.dir}")
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String fileDir;
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ExecutorService executors = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
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/**
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* 读取压缩文件
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* 文件压缩到统一目录fileDir下，并且命名使用压缩文件名+文件名因为文件名
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* 可能会重复(在系统中对于同一种类型的材料压缩文件内的文件是一样的，如果文件名
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* 重复，那么这里会被覆盖[同一个压缩文件中的不同目录中的相同文件名暂时不考虑])
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* <b>注：</b>
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* <p>
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* 文件名命名中的参数的说明：
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* 1.archiveName，为避免解压的文件中有重名的文件会彼此覆盖，所以加上了archiveName，因为在ufile中archiveName
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* 是不会重复的。
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* 2.level，这里层级结构的列表我是通过一个map来构造的，map的key是文件的名字，值是对应的文件，这样每次向map中
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* 加入节点的时候都会获取父节点是否存在，存在则会获取父节点的value并将当前节点加入到父节点的childList中(这里利用
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* 的是java语言的引用的特性)。
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* </p>
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* @param filePath
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*/
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public String readZipFile(String filePath) {
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String archiveSeparator = "/";
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Map<String, FileNode> appender = Maps.newHashMap();
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String archiveFileName = fileUtils.getFileNameFromPath(filePath);
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try {
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ZipFile zipFile = new ZipFile(filePath, fileUtils.getFileEncodeUTFGBK(filePath));
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Enumeration<ZipArchiveEntry> entries = zipFile.getEntries();
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// 排序
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entries = sortZipEntries(entries);
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List<Map<String, ZipArchiveEntry>> entriesToBeExtracted = Lists.newArrayList();
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while (entries.hasMoreElements()){
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ZipArchiveEntry entry = entries.nextElement();
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String fullName = entry.getName();
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int level = fullName.split(archiveSeparator).length;
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// 展示名
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String originName = getLastFileName(fullName, archiveSeparator);
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String childName = level + "_" + originName;
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boolean directory = entry.isDirectory();
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if (!directory) {
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childName = archiveFileName + "_" + originName;
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entriesToBeExtracted.add(Collections.singletonMap(childName, entry));
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}
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String parentName = getLast2FileName(fullName, archiveSeparator, archiveFileName);
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parentName = (level-1) + "_" + parentName;
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FileNode node = new FileNode(originName, childName, parentName, new ArrayList<>(), directory);
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addNodes(appender, parentName, node);
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appender.put(childName, node);
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}
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// 开启新的线程处理文件解压
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executors.submit(new ZipExtractorWorker(entriesToBeExtracted, zipFile, filePath));
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return new ObjectMapper().writeValueAsString(appender.get(""));
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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}
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/**
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* 排序zipEntries(对原来列表倒序)
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* @param entries
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*/
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private Enumeration<ZipArchiveEntry> sortZipEntries(Enumeration<ZipArchiveEntry> entries) {
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List<ZipArchiveEntry> sortedEntries = Lists.newArrayList();
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while(entries.hasMoreElements()){
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sortedEntries.add(entries.nextElement());
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}
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Collections.sort(sortedEntries, Comparator.comparingInt(o -> o.getName().length()));
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return Collections.enumeration(sortedEntries);
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}
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public String unRar(String filePath){
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Map<String, FileNode> appender = Maps.newHashMap();
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try {
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Archive archive = new Archive(new File(filePath));
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List<FileHeader> headers = archive.getFileHeaders();
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headers = sortedHeaders(headers);
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String archiveFileName = fileUtils.getFileNameFromPath(filePath);
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List<Map<String, FileHeader>> headersToBeExtracted = Lists.newArrayList();
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for (FileHeader header : headers) {
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String fullName;
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if (header.isUnicode()) {
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fullName = header.getFileNameW();
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}else {
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fullName = header.getFileNameString();
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}
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// 展示名
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String originName = getLastFileName(fullName, "\\");
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String childName = originName;
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boolean directory = header.isDirectory();
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if (!directory) {
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childName = archiveFileName + "_" + originName;
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headersToBeExtracted.add(Collections.singletonMap(childName, header));
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}
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String parentName = getLast2FileName(fullName, "\\", archiveFileName);
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FileNode node = new FileNode(originName, childName, parentName, new ArrayList<>(), directory);
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addNodes(appender, parentName, node);
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appender.put(childName, node);
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}
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executors.submit(new RarExtractorWorker(headersToBeExtracted, archive, filePath));
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return new ObjectMapper().writeValueAsString(appender.get(""));
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} catch (RarException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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return null;
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}
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private void addNodes(Map<String, FileNode> appender, String parentName, FileNode node) {
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if (appender.containsKey(parentName)) {
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appender.get(parentName).getChildList().add(node);
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}else { // 根节点
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FileNode nodeRoot = new FileNode(parentName, parentName, "", new ArrayList<>(), true);
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nodeRoot.getChildList().add(node);
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appender.put("", nodeRoot);
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appender.put(parentName, nodeRoot);
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}
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}
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private List<FileHeader> sortedHeaders(List<FileHeader> headers) {
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List<FileHeader> sortedHeaders = new ArrayList<>();
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Map<Integer, FileHeader> mapHeaders = new TreeMap<>();
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headers.forEach(header -> mapHeaders.put(header.getFileNameW().length(), header));
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for (Map.Entry<Integer, FileHeader> entry : mapHeaders.entrySet()){
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for (FileHeader header : headers) {
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if (entry.getKey().intValue() == header.getFileNameW().length()) {
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sortedHeaders.add(header);
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}
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}
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}
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return sortedHeaders;
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}
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/**
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* 获取倒数第二个文件(夹)名
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* @param fullName
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* @param seperator
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* 压缩文件解压后，不同的压缩格式分隔符不一样zip是/，而rar是\
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* @param rootName
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* 根目录名:如果倒数第二个路径为空，那么赋值为rootName
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* @return
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*/
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private static String getLast2FileName(String fullName, String seperator, String rootName) {
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if (fullName.endsWith(seperator)) {
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fullName = fullName.substring(0, fullName.length()-1);
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}
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// 1.获取剩余部分
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int endIndex = fullName.lastIndexOf(seperator);
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String leftPath = fullName.substring(0, endIndex == -1 ? 0 : endIndex);
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if (null != leftPath && leftPath.length() > 1) {
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// 2.获取倒数第二个
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return getLastFileName(leftPath, seperator);
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}else {
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return rootName;
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}
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}
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/**
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* 获取最后一个文件(夹)的名字
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* @param fullName
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* @param seperator
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* 压缩文件解压后，不同的压缩格式分隔符不一样zip是/，而rar是\
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* @return
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*/
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private static String getLastFileName(String fullName, String seperator) {
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if (fullName.endsWith(seperator)) {
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fullName = fullName.substring(0, fullName.length()-1);
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}
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String newName = fullName;
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if (null != fullName && fullName.contains(seperator)) {
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newName = fullName.substring(fullName.lastIndexOf(seperator) + 1);
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}
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return newName;
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}
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/**
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* 文件节点(区分文件上下级)
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*/
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public class FileNode{
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private String originName;
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private String fileName;
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private String parentFileName;
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private boolean directory;
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private List<FileNode> childList;
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public FileNode(String originName, String fileName, String parentFileName, List<FileNode> childList, boolean directory) {
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this.originName = originName;
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this.fileName = fileName;
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this.parentFileName = parentFileName;
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this.childList = childList;
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this.directory = directory;
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}
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public String getFileName() {
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return fileName;
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}
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public void setFileName(String fileName) {
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this.fileName = fileName;
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}
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public String getParentFileName() {
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return parentFileName;
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}
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public void setParentFileName(String parentFileName) {
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this.parentFileName = parentFileName;
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}
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public List<FileNode> getChildList() {
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return childList;
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}
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public void setChildList(List<FileNode> childList) {
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this.childList = childList;
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}
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@Override
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public String toString() {
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try {
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return new ObjectMapper().writeValueAsString(this);
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} catch (JsonProcessingException e) {
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e.printStackTrace();
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return "";
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}
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}
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public String getOriginName() {
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return originName;
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}
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public void setOriginName(String originName) {
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this.originName = originName;
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}
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public boolean isDirectory() {
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return directory;
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}
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public void setDirectory(boolean directory) {
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this.directory = directory;
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}
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}
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/**
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* Zip文件抽取线程
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*/
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class ZipExtractorWorker implements Runnable {
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private List<Map<String, ZipArchiveEntry>> entriesToBeExtracted;
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private ZipFile zipFile;
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private String filePath;
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public ZipExtractorWorker(List<Map<String, ZipArchiveEntry>> entriesToBeExtracted, ZipFile zipFile, String filePath) {
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this.entriesToBeExtracted = entriesToBeExtracted;
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this.zipFile = zipFile;
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this.filePath = filePath;
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}
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@Override
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public void run() {
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System.out.println("解析压缩文件开始《《《《《《《《《《《《《《《《《《《《《《《");
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for (Map<String, ZipArchiveEntry> entryMap : entriesToBeExtracted) {
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String childName = entryMap.keySet().iterator().next();
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ZipArchiveEntry entry = entryMap.values().iterator().next();
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try {
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extractZipFile(childName, zipFile.getInputStream(entry));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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try {
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zipFile.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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if (new File(filePath).exists()) {
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new File(filePath).delete();
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}
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System.out.println("解析压缩文件结束《《《《《《《《《《《《《《《《《《《《《《《");
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}
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/**
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* 读取压缩文件并写入到fileDir文件夹下
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* @param childName
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* @param zipFile
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*/
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private void extractZipFile(String childName, InputStream zipFile) {
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String outPath = fileDir + childName;
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try (OutputStream ot = new FileOutputStream(outPath)){
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byte[] inByte = new byte[1024];
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int len;
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while ((-1 != (len = zipFile.read(inByte)))){
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ot.write(inByte, 0, len);
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}
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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/**
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* Rar文件抽取
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*/
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class RarExtractorWorker implements Runnable {
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private List<Map<String, FileHeader>> headersToBeExtracted;
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private Archive archive;
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/**
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* 用以删除源文件
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*/
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private String filePath;
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public RarExtractorWorker(List<Map<String, FileHeader>> headersToBeExtracted, Archive archive, String filePath) {
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this.headersToBeExtracted = headersToBeExtracted;
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this.archive = archive;
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this.filePath = filePath;
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}
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@Override
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public void run() {
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System.out.println("解析压缩文件开始《《《《《《《《《《《《《《《《《《《《《《《");
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for (Map<String, FileHeader> entryMap : headersToBeExtracted) {
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String childName = entryMap.keySet().iterator().next();
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extractRarFile(childName, entryMap.values().iterator().next(), archive);
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}
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try {
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archive.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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if (new File(filePath).exists()) {
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new File(filePath).delete();
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}
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System.out.println("解析压缩文件结束《《《《《《《《《《《《《《《《《《《《《《《");
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}
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/**
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* 抽取rar文件到指定目录下
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* @param childName
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* @param header
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* @param archive
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*/
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private void extractRarFile(String childName, FileHeader header, Archive archive) {
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String outPath = fileDir + childName;
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try(OutputStream ot = new FileOutputStream(outPath)) {
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archive.extractFile(header, ot);
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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} catch (RarException e) {
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e.printStackTrace();
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}
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}
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}
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}
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