Java实现解析zip压缩包并获取文件内容

2024-04-02 19:55

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功能描述

页面上传一个源码压缩包，后端将压缩包解压，并获取每个文件中的内容。

相关源码

（1）首先定义一个与解压文件对应的实体类。

package com.sonar.data.vo;
 
import lombok.Data;
 

@Data
public class UnzipFileVo {
 
    
    private Integer type;
 
    
    private String path;
 
    
    private String content;
 
}

（2）接下来就是解压的工具类了。

package com.sonar.data.utils.business;
 
import com.sonar.data.vo.UnzipFileVo;
import org.springframework.web.multipart.MultipartFile;
 
import java.io.*;
import java.util.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
 

@SuppressWarnings("unused")
public class UnZipUtils {
 
    public static int BYTE_LEN = 10240;
 
    
    public static List<UnzipFileVo> unzip(File file) {
        if (Objects.isNull(file) || !file.exists()) {
            return Collections.emptyList();
        }
        ZipFile zip = null;
        try {
            zip = new ZipFile(file);
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (Objects.isNull(zip)) {
            return Collections.emptyList();
        }
        Enumeration<? extends ZipEntry> entries = zip.entries();
        List<UnzipFileVo> vos = new ArrayList<>();
        while (entries.hasMoreElements()) {
            ZipEntry entry = entries.nextElement();
            String path = entry.getName();
            UnzipFileVo vo = new UnzipFileVo();
            vo.setPath(path);
            // 解析文件夹
            boolean directory = entry.isDirectory();
            if (directory) {
                vo.setType(0);
                vos.add(vo);
                continue;
            }
            // 解析文件
            vo.setType(1);
            StringBuilder sb = new StringBuilder();
            try (InputStream in = zip.getInputStream(entry);
                 InputStreamReader inputStreamReader = new InputStreamReader(in);
                 BufferedReader reader = new BufferedReader(inputStreamReader)) {
                String line;
                while ((line = reader.readLine()) != null) {
                    sb.append(line).append("\n");
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            vo.setContent(sb.toString());
            vos.add(vo);
        }
        if (Objects.nonNull(zip)) {
            try {
                zip.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return vos;
    }
 
 
    
    public static List<UnzipFileVo> unzip(MultipartFile multipartFile) {
        File file = getFile(multipartFile);
        if (Objects.isNull(file)) {
            return Collections.emptyList();
        }
        List<UnzipFileVo> vos = unzip(file);
        if (file.exists()) {
            boolean delete = file.delete();
            if (delete) {
                System.out.println(file.getName() + " 临时文件删除成功！");
            } else {
                System.out.println(file.getName() + " 临时文件删除失败！");
            }
        }
        return vos;
    }
 
    
    private static File getFile(MultipartFile multipartFile) {
        String fileName = System.currentTimeMillis() + "_" + multipartFile.getOriginalFilename();
        File file = new File("D://" + fileName);
        int len;
        try (OutputStream os = new FileOutputStream(file);
             InputStream in = multipartFile.getInputStream()) {
            byte[] buffer = new byte[BYTE_LEN];
            while ((len = in.read(buffer, 0, BYTE_LEN)) != -1) {
                os.write(buffer, 0, len);
            }
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
        return file;
    }
}

调用说明

工具类中提供了两个解压的方式：

方式一：本地文件 File 进行解压。

方式二：上传文件 MultipartFile 进行解压。

package com.sonar.data.controller;
 
import com.sonar.data.utils.business.UnZipUtils;
import com.sonar.data.vo.UnzipFileVo;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
 
import java.io.File;
import java.util.List;
 

@RestController
@RequestMapping("/test")
public class TestController {
 
    
    @PostMapping("/import")
    public List<UnzipFileVo> importTest(@RequestPart("file") MultipartFile mFile) {
        return UnZipUtils.unzip(mFile);
    }
 
    
    public static void main(String[] args) {
        File file = new File("class="lazy" data-src.zip");
        boolean delete = file.delete();
        System.out.println(delete);
    }
 
}