Java directamente a través y leer el contenido del archivo zip y tratamiento de errores

Hay una necesidad de leer el elemento de datos del paquete comprimido, y procesar los datos. Sólo empezó a pensar que descomprimir y luego leer. Y entonces me encontré con una lectura directa. Principalmente utiliza ZipEntry. Una pluralidad de paquetes comprimidos para ser leído de manera anidada, la idea es comprimido para extraer la bolsa fuera comprimido.

Directamente en el código:


/** 
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package com.ruoyi.parser;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

/**
 * @desc: 
 * @name: FileParser.java
 * @author: tompai
 * @email:[email protected]
 * @createTime: 2020年3月10日 下午11:13:33
 * @history:
 * @version: v1.0
 */

public class FileParser {

	/**
	 * @author: tompai
	 * @createTime: 2020年3月10日 下午11:13:34
	 * @history:
	 * @param args void
	 */

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		String fileName="./doc/123.zip";
		String txt;
		try {
			txt = readZip(fileName);
			System.out.println(txt);
		} catch (IOException e) {
			//TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

	public static String readZip(String fileName) throws IOException {
		//不加编码,处理可能会报错:MALFORMED 错误
		File file = new File(fileName);
		String parentZipParent = file.getParent();// 获取上级文件夹解压到这里
		File temp = file;
		InputStream in=new FileInputStream(fileName);
		
		BufferedInputStream bis = new BufferedInputStream(in);
		String code = CodeDetector.getEncode(bis, false);
		Charset cs=Charset.forName(code);
		ZipFile zip = new ZipFile(fileName,cs);
		ZipInputStream zis = new ZipInputStream(bis,cs);
		ZipEntry entry;
		// 用于获取压缩文件中的文件或文件夹
		StringBuffer sb = new StringBuffer();
		while ((entry = zis.getNextEntry()) != null) {
			if (entry.isDirectory()) {
				System.out.println("文件夹");
			} else {
				// System.out.println("file:"+entry.getName());
				if (entry.getName().endsWith("txt")) {
					BufferedReader reader = new BufferedReader(new InputStreamReader(zip.getInputStream(entry)));
					String line = null;
					while ((line = reader.readLine()) != null) {
						// System.out.println(line);
						sb.append(line);
					}
				} else if (entry.getName().endsWith("zip")) { // 判断是否为压缩包,若是则将其解压出再读取
					temp = new File(parentZipParent + "\\" + entry.getName());
					// System.out.println(temp.getAbsolutePath());
					if (!temp.getParentFile().exists()) {
						temp.getParentFile().mkdirs();
					}
					OutputStream os = new FileOutputStream(temp);
					//// 通过ZipFile的getInputStream方法拿到具体的ZipEntry的输入流
					InputStream is = zip.getInputStream(entry);
					int len = 0;
					while ((len = is.read()) != -1) {
						os.write(len);
					}
					sb.append(readZip(temp.getAbsolutePath()));
				}
			}
		}
		return sb.toString();
	}
}

proceso de error: java-extracción java.lang.IllegalArgumentException postal: MALFORMED equivocada!

java.lang.IllegalArgumentException: MALFORMED[1]
    at java.util.zip.ZipCoder.toString(ZipCoder.java:65) ~[na:1.8.0_181]
    at java.util.zip.ZipFile.getZipEntry(ZipFile.java:583) ~[na:1.8.0_181]
    at java.util.zip.ZipFile.access$900(ZipFile.java:60) ~[na:1.8.0_181]
    at java.util.zip.ZipFile$ZipEntryIterator.next(ZipFile.java:539) ~[na:1.8.0_181]
    at java.util.zip.ZipFile$ZipEntryIterator.nextElement(ZipFile.java:514) ~[na:1.8.0_181]
    at java.util.zip.ZipFile$ZipEntryIterator.nextElement(ZipFile.java:495) ~[na:1.8.0_181]

Solución: CodeDetector

InputStream in=new FileInputStream(fileName);
BufferedInputStream bis = new BufferedInputStream(in);
//检测编码格式
String code = CodeDetector.getEncode(bis, false);
Charset cs=Charset.forName(code);
ZipFile zip = new ZipFile(fileName,cs);
ZipInputStream zis = new ZipInputStream(bis,cs);

 

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Origin blog.csdn.net/tianshan2010/article/details/104786524
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