Springboot上传并解析Zip包

1. 网友的实现：

package com.c2f.hbos.mcc.common.utils;

import com.c2f.hbos.mcc.core.catalog.enums.SHMedicationCatalogDataSourceEnum;
import org.apache.commons.compress.utils.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * @description: Zip包工具
 * @author: Yang JianXiong
 * @since: 2023/3/6
 */
public class DataPackageServiceImpl {

    public void upload(MultipartFile dataPackage) throws IOException {
        if (dataPackage == null || dataPackage.getSize() <= 0) {
            return;
        }
        File file = multipartFileToFile(dataPackage);
        if (file == null || !file.exists()) {
            return;
        }
        ZipFile zipFile = new ZipFile(file, Charset.forName("GBK"));
        Enumeration<? extends ZipEntry> dirEntries = zipFile.entries();
        while (dirEntries.hasMoreElements()) {
            ZipEntry entry = dirEntries.nextElement();
            if (entry.isDirectory()) {
                continue;
            }
            // 获取节点输入流
            // InputStream inputStream = zipFile.getInputStream(entry);
            // 获取节点元数据
            System.out.println(entry.getName());
        }
        // 回收资源
        IOUtils.closeQuietly(zipFile);
        file.delete();
    }

    // MultipartFile 转 File
    private File multipartFileToFile(MultipartFile multipartFile) {
        File file = null;
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try {
            inputStream = multipartFile.getInputStream();
            file = new File(multipartFile.getOriginalFilename());
            outputStream = new FileOutputStream(file);
            write(inputStream, outputStream);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return file;
    }

    private void write(InputStream inputStream, OutputStream outputStream) {
        byte[] buffer = new byte[4096];
        try {
            int count = inputStream.read(buffer, 0, buffer.length);
            while (count != -1) {
                outputStream.write(buffer, 0, count);
                count = inputStream.read(buffer, 0, buffer.length);
            }
        } catch (RuntimeException e) {
            throw e;
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage(), e);
        }
    }
}

2. 我的实现：

package com.c2f.hbos.mcc.common.utils;

import com.c2f.hbos.mcc.core.catalog.enums.SHMedicationCatalogDataSourceEnum;
import org.apache.commons.compress.utils.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * @description: Zip包工具
 * @author: Yang JianXiong
 * @since: 2023/3/6
 */
public final class SHMedicationCatalogZippedTxtUtil {

    public static void upload(MultipartFile dataPackage) throws IOException {
        if (dataPackage == null || dataPackage.getSize() <= 0) {
            return;
        }
        File file = multipartFileToFile(dataPackage);
        if (file == null || !file.exists()) {
            return;
        }

        ZipFile zipFile = new ZipFile(file, Charset.forName("GBK"));
        Enumeration<? extends ZipEntry> dirEntries = zipFile.entries();
        while (dirEntries.hasMoreElements()) {
            List list = handleOneFile(zipFile, dirEntries);
        }
        // 回收资源
        IOUtils.closeQuietly(zipFile);
        file.delete();
    }

    public static List handleOneFile(ZipFile zipFile, Enumeration<? extends ZipEntry> dirEntries) throws IOException {
        ZipEntry entry = dirEntries.nextElement();
        if (entry.isDirectory()) {
            return null;
        }
        String zipEntryName = entry.getName();
        System.err.println(zipEntryName);
        InputStream in = zipFile.getInputStream(entry);
        SHMedicationCatalogDataSourceEnum byFileName = SHMedicationCatalogDataSourceEnum.getByFileName(zipEntryName);

        List instanceList = new ArrayList();
        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in, byFileName.getSourceCharSet()))) {
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                if (StringUtils.isBlank(line)) {
                    continue;
                }
                Object o = SHMedicationCatalogTextParser.fromText(line, byFileName.getClazz(), byFileName.getLengthArr(), byFileName.getSourceCharSet(), byFileName.getDestinationCharSet());
                instanceList.add(o);
            }
        }
        return instanceList;
    }

    // MultipartFile 转 File
    private static File multipartFileToFile(MultipartFile multipartFile) {
        File file = null;
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try {
            inputStream = multipartFile.getInputStream();
            file = new File(multipartFile.getOriginalFilename());
            outputStream = new FileOutputStream(file);
            write(inputStream, outputStream);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return file;
    }

    private static void write(InputStream inputStream, OutputStream outputStream) {
        byte[] buffer = new byte[4096];
        try {
            int count = inputStream.read(buffer, 0, buffer.length);
            while (count >= 0) {
                outputStream.write(buffer, 0, count);
                count = inputStream.read(buffer, 0, buffer.length);
            }
        } catch (RuntimeException e) {
            throw e;
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage(), e);
        }
    }

}

3. 我的终版实现：

package com.c2f.hbos.mcc.common.utils;

import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * @description: Zip包工具
 * @author: Yang JianXiong
 * @since: 2023/3/6
 */
public final class SHMedicationCatalogZippedTxtUtil {

    /**
     * 从MultipartFile文件获取子文件的输入流
     *
     * @param dataPackage
     * @return
     * @throws IOException
     */
    public static Map<String, InputStream> getInputOfMultipartFile(MultipartFile dataPackage) throws IOException {
        if (dataPackage == null || dataPackage.getSize() <= 0) {
            return null;
        }
        File file = multipartFileToFile(dataPackage);
        if (file == null || !file.exists()) {
            return null;
        }

        Map<String, InputStream> inputStreamMap = new HashMap<>(8);
        ZipFile zipFile = new ZipFile(file, Charset.forName("GBK")); // ISO-8859-1
        Enumeration<? extends ZipEntry> dirEntries = zipFile.entries();
        while (dirEntries.hasMoreElements()) {
            ZipEntry txtFile = dirEntries.nextElement();
            if (txtFile.isDirectory()) {
                continue;
            }
            String txtName = txtFile.getName();
            InputStream txtInputStream = zipFile.getInputStream(txtFile);
            inputStreamMap.put(txtName, txtInputStream);
        }
        return inputStreamMap;
    }

    /**
     * MultipartFile 转 File
     *
     * @param multipartFile
     * @return
     */
    private static File multipartFileToFile(MultipartFile multipartFile) {
        File file = null;
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try {
            inputStream = multipartFile.getInputStream();
            file = new File(multipartFile.getOriginalFilename());
            outputStream = new FileOutputStream(file);
            write(inputStream, outputStream);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return file;
    }

    /**
     * 入出转换
     *
     * @param inputStream
     * @param outputStream
     */
    private static void write(InputStream inputStream, OutputStream outputStream) {
        byte[] buffer = new byte[4096];
        try {
            int count = inputStream.read(buffer, 0, buffer.length);
            while (count >= 0) {
                outputStream.write(buffer, 0, count);
                count = inputStream.read(buffer, 0, buffer.length);
            }
        } catch (RuntimeException e) {
            throw e;
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage(), e);
        }
    }

}