ZipUtil
代码语言：javascript复制import java.io.*;
import java.net.URLEncoder;
import javax.servlet.http.HttpServletResponse;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
//import java.util.zip.ZipEntry;
//import java.util.zip.ZipOutputStream;
/**
* 生成压缩文件工具类
* @author
*
*/
public final class ZipUtil {
private static Logger logger = LoggerFactory.getLogger(ZipUtil.class);
/**
* 字节数组长度
*/
private static final int BYTE_ARRAY_LENGTH = 1024;
private ZipUtil(){
throw new IllegalStateException("ZipUtil class");
}
/**
* 创建目标路径中文件夹
* @param folderName 路径
* @return 创建结果
*/
public static boolean makeDirs(String folderName) {
if (folderName == null || folderName.isEmpty()) {
return false;
}
File folder = new File(folderName);
return (folder.exists() && folder.isDirectory()) ? true : folder.mkdirs();
}
/**
* 创建压缩文件
* @param srcfile 源文件列表
* @param zipfile 压缩文件
* @throws IOException io异常
*/
public static void zipFiles(File[] srcfile, File zipfile) throws IOException {
byte[] buf = new byte[BYTE_ARRAY_LENGTH];
ZipOutputStream out = null;
FileInputStream in = null;
try {
out = new ZipOutputStream(new FileOutputStream(
zipfile));
for (int i = 0; i < srcfile.length; i ) {
try{
in = new FileInputStream(srcfile[i]);
out.putNextEntry(new ZipEntry(srcfile[i].getName()));
// 支持中文 解决文件名乱码问题
out.setEncoding("GBK");
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
}
catch (Exception e) {
logger.error(String.format("压缩文件出错 01：{}%s", e));
}
finally{
out.closeEntry();
in.close();
}
}
} catch (IOException e) {
logger.error(String.format("压缩文件出错 02：{}%s", e));
}finally{
out.close();
}
}
/**
* 从浏览器下载压缩文件
* @param file 文件对象
* @param response 响应对象
* @param isDelete 是否删除源文件
* @throws IOException io异常
*/
public static void downloadZipFile(File file,HttpServletResponse response,boolean isDelete) throws IOException{
OutputStream toClient = null;
// InputStream inputStream = null;
try(InputStream inputStream =new FileInputStream(file);) {
// 清空response
response.reset();
toClient = new BufferedOutputStream(response.getOutputStream());
// inputStream=new FileInputStream(file);
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8");
response.setHeader("Content-Disposition", "attachment;filename=" URLEncoder.encode(file.getName(),"UTF-8"));
int len=0;
byte[] buffer=new byte[1024];
while((len=inputStream.read(buffer))>0){
toClient.write(buffer,0,len);
}
toClient.flush();
} catch (IOException ex) {
logger.error(ex.getMessage());
}
finally{
if(toClient!= null){
toClient.close();
}
// if(inputStream!= null){
// inputStream.close();
// }
}
//在所有流都关闭后再删除文件
if(isDelete&&file.exists()&&(!file.delete())) {//是否将生成的服务器端文件删除
// if (file.exists()) {
// if (!file.delete()){
logger.error("删除失败");
// }
// }
}
}
}使用实例：
代码语言：javascript复制 //多个文件下载，需要压缩
//导出文件路径
String filePath = System.getProperty("catalina.base") File.separator "tmp\" getCurrentUser().getLoginId() "\";
//创建此路径
ZipUtil.makeDirs(filePath);
//得到此路径下文件
File fileDir = new File(filePath);
File[] fileDirs = fileDir.listFiles();
this.deleteFile(fileDirs);
//导出Excel文件路径
String fullFilePath = "";
//用于存放生成的excel文件名称
List<String> fileNameforexcel = new ArrayList<String>();
//导出压缩文件路径
String zipFilePath = "";
//导出压缩文件的全路径
String zipname = this.getZipName(pglx);
zipFilePath = filePath File.separator zipname ".zip";
File zip = new File(zipFilePath);//创建压缩文件
//保存文件名
//String fileName = "";
//FileOutputStream os = null;
for (int i = 0; i < pgbgBeans.size(); i ) {
PgbgBean pgbgBean = pgbgBeans.get(i);
Map<String, Object> map = new HashMap<String, Object>();
map.put("pgjgzs", pgbgBean);
try {
String fileNametemp = "(" String.valueOf(i 1) ")"
ExcelUtils.exportInspectionRecordSurface(request, response, map,pglx);
ExcelUtils.writeExcelTolocal(fileNametemp ".xls", filePath);
fullFilePath = filePath fileNametemp ".xls";
fileNameforexcel.add(fullFilePath);
} catch (Exception e) {
log.error("批量文件下载异常", e);
}
}
//将excel文件生成压缩文件
File[] srcfile = new File[fileNameforexcel.size()];
for (int j = 0, n1 = fileNameforexcel.size(); j < n1; j ) {
srcfile[j] = new File(fileNameforexcel.get(j));
}
try {
ZipUtil.zipFiles(srcfile, zip);
} catch (IOException e) {
log.error("生成压缩文件异常", e);
}
File file = new File(zipFilePath);
try {
ZipUtil.downloadZipFile(file, response, true);
} catch (IOException e) {
log.error("压缩文件下载异常", e);
}ExcelUtils.writeExcelTolocal方法
代码语言：javascript复制/**
* 将excel导出到本地
* @param fileName 文件名
* @param pathname 路径名
* @throws IOException io异常
*/
public static void writeExcelTolocal(String fileName, String pathname) throws IOException {
OutputStream out = null;
try {
out = new FileOutputStream(new File(pathname fileName));
workbook.write(out);
//byte[] bytes = new byte[1024];
//out.write(bytes, 0, bytes.length);
out.flush();
} catch (FileNotFoundException e) {
logger.error("导出到本地文件不存在", e);
} catch (IOException e) {
logger.error("文件导出到本地异常", e);
} finally {
if (out != null) {
out.close();
}
}
}
