1.需要引入包:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.springframework.util.StringUtils;
2.代碼
/**
* @Title: compress
* @Description: TODO
* @param filePaths 需要壓縮的文件地址列表(絕對路徑)
* @param zipFilePath 需要壓縮到哪個zip文件(無需創建這樣一個zip,只需要指定一個全路徑)
* @param keepDirStructure 壓縮後目錄是否保持原目錄結構
* @throws IOException
* @return int 壓縮成功的文件個數
*/
public static int compress(List<String> filePaths, String zipFilePath,Boolean keepDirStructure) throws IOException{
byte[] buf = new byte[1024];
File zipFile = new File(zipFilePath);
//zip文件不存在,則創建文件,用於壓縮
if(!zipFile.exists())
zipFile.createNewFile();
int fileCount = 0;//記錄壓縮了幾個文件?
try {
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFile));
for(int i = 0; i < filePaths.size(); i++){
String relativePath = filePaths.get(i);
if(StringUtils.isEmpty(relativePath)){
continue;
}
File sourceFile = new File(relativePath);//絕對路徑找到file
if(sourceFile == null || !sourceFile.exists()){
continue;
}
FileInputStream fis = new FileInputStream(sourceFile);
if(keepDirStructure!=null && keepDirStructure){
//保持目錄結構
zos.putNextEntry(new ZipEntry(relativePath));
}else{
//直接放到壓縮包的根目錄
zos.putNextEntry(new ZipEntry(sourceFile.getName()));
}
//System.out.println("壓縮當前文件:"+sourceFile.getName());
int len;
while((len = fis.read(buf)) > 0){
zos.write(buf, 0, len);
}
zos.closeEntry();
fis.close();
fileCount++;
}
zos.close();
//System.out.println("壓縮完成");
} catch (Exception e) {
e.printStackTrace();
}
return fileCount;
}
3.測試
public static void main(String[] args) throws IOException {
List<String> sourceFilePaths = new ArrayList<String>();
sourceFilePaths.add("d:/test/C08065.jpg");
sourceFilePaths.add("d:/test/新建文件夾/C08984.jpg");
sourceFilePaths.add("d:/test/找不到我.jpg");//試一個找不到的文件
//指定打包到哪個zip(絕對路徑)
String zipTempFilePath = "D:/test/test.zip";
//調用壓縮
int s = compress(sourceFilePaths, zipTempFilePath,false);
System.out.println("成功壓縮"+s+"個文件");
}