【亲测成功】Java无需解压直接读取ZIP压缩包里的文件及内容--通过URL获取.zip文件

傷城~ 2022-12-25 15:53 211阅读 0赞

# 前言 #

最近项目，需要读取云端压缩数据，进行滤波操作

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# 代码实现： #

import java.io.*;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.net.URLConnection;
    /** * @program: phb-server * @description: 获取阿里云zip，压缩数据 * @author: Zhaocunwei * @create: 2020-12-02 17:18 **/
    
    public class CloudDataUtils { 
    
    
    
        public static void main(String[] args) throws IOException { 
            String urlTemp = "https://xxxxxxxxx/data-collection/45/xxxxxxxxxxxxxxxxxxx%E7%96%B2%E5%8A%B3%E9%87%87%E9%9B%86_carry_%E5%91%A8%E5.zip";
    
            // 统一资源
            URL url = new URL(urlTemp);
            // 连接类的父类，抽象类
            URLConnection urlConnection = url.openConnection();
            // http的连接类
            HttpURLConnection httpURLConnection = (HttpURLConnection) urlConnection;
            //设置超时
            httpURLConnection.setConnectTimeout(1000*5);
            //设置请求方式，默认是GET
            httpURLConnection.setRequestMethod("GET");
            // 设置字符编码
            httpURLConnection.setRequestProperty("Charset", "UTF-8");
            // 打开到此 URL引用的资源的通信链接（如果尚未建立这样的连接）。
            httpURLConnection.connect();
            // 文件大小
            int fileLength = httpURLConnection.getContentLength();
    
            // 控制台打印文件大小
            System.out.println("您要下载的文件大小为:" + fileLength / (1024 * 1024) + "MB");
    
            // 建立链接从请求中获取数据
            URLConnection con = url.openConnection();
            BufferedInputStream bin = new BufferedInputStream(httpURLConnection.getInputStream());
            System.out.println(bin);
            //读取数据
            int by = 0;
            while((by = bin.read()) != -1) { 
                System.out.println((char)by);
            }
    
            byte[] bys = new byte[1024];
            int len = 0;
            while((len = bin.read(bys)) != -1) { 
                System.out.println(new String(bys , 0 , len));
            }
            //释放数据
            bin.close();
        }
    }

获取数据以后出现如下情况，  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyMzcwOTEz_size_16_color_FFFFFF_t_70]  
需要解决乱码问题，晚上下班回到家仔细研究了一下，感觉上面的代码，写的不规范，优化一下，代码

# 优化代码： #

package com.zcw.test;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.nio.charset.Charset;
    import java.util.zip.ZipEntry;
    import java.util.zip.ZipInputStream;
    
    /** * @ClassName : ZipTest * @Description : * @Author : zhaocunwei * @Date: 2020-12-02 21:32 */
    public class ZipTest { 
    
        public static void main(String[] args) throws IOException { 
            String dnFileUrl = "http://E9%87%87%E9%9B%86_carry_%E5%91%A8%E5%87%AF%E7%91%9E1_20201202133209_10B4ADEDA15.zip";
            ZipInputStream zipInputStream = null;
            BufferedReader br = null;
            URL url = new URL(dnFileUrl);
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            Charset utf8 = Charset.forName("UTF-8");
            int resultCode = conn.getResponseCode();
           if (200 == resultCode) { 
               zipInputStream = new ZipInputStream(conn.getInputStream(), utf8);
               ZipEntry zipEntry;
               while ((zipEntry = zipInputStream.getNextEntry()) != null) { 
                   if (zipEntry.toString().endsWith("txt")) { 
                       br = new BufferedReader(new InputStreamReader(zipInputStream));
                       String line;
                       while ((line = br.readLine()) != null) { 
                           System.out.println(line);
                       }
                   }
               }
           }
        }
    
    
    
    
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyMzcwOTEz_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyMzcwOTEz_size_16_color_FFFFFF_t_70]: /images/20221120/b0c6c81bd2ef45d18c31f2a9308d2bf8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyMzcwOTEz_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20201202221153246.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyMzcwOTEz,size_16,color_FFFFFF,t_70