java File 打开 清空 java文件清空

需求分析

本需求是基于JSP页面实现的.

上传word文档或者将word文档存到一个文件夹进行压缩再上传.

对于压缩的文件夹需要解压出来.

解析word文档里面的表格,并把表格内容存放到数据库.

把文件夹里面的数据清空.

需求实现

(直接看代码吧.有注释滴.如果有疑问可以提出来哦.)

//设置临时存放目录
String tempPath = "/temp/mobileimport";
File file = new File(tempPath);
if(!file.exists()){
	file.mkdir();
}

DiskFileUploadEx fu = new DiskFileUploadEx();

//设置最大文件尺寸,

//得到所有文件
List fileItems = fu.parseRequestEx(request);
Iterator i = fileItems.iterator();
String tail = "";

//依次处理每一个文件
while(i.hasNext()){
	FileItem fi = (FileItem)i.next();
	if(fi.getName().equals("") && fi.getSize()==0){
		System.out.println("1111");
		continue;
	}
	
	String fileName = fi.getName();
	fi.write(new File(tempPath+"/"+fileName));
	tail = getFileTail(fileName);// 获取文件后缀
	
	String fString = tempPath +"/"+fileName;
	if(tail.equals("docx")){
		parseWord(request,response, fString);
	}else if(tail.equals("zip")){
		//调用解压方法
		
		System.out.println(fString);
		unZipFiles(request,response,new File(fString), tempPath);
	}
	
	//解析word文档
	//删除所有目录下所有文件
	deleteDir(tempPath);
	out.print("导入成功!");
	//System.out.println(fString.substring(0,fString.indexOf('.')));	
}
<%!
//解压文件
public static void unZipFiles(HttpServletRequest request,HttpServletResponse response,File zipFile,String descDir) throws IOException {
//		request.setCharacterEncoding("utf-8");
		File pathFile = new File(descDir);
		List<String> pathList = new ArrayList<String>();
		if (!pathFile.exists()){
			pathFile.mkdirs();
		}
		/**
		 * ZipFile类用于从zip文件中读取条目
		 * getEntries()返回ZIP文件条目中的枚举
		 */
		ZipFile zip = new ZipFile(zipFile);
		for (Enumeration entries = zip.getEntries(); entries.hasMoreElements();){
			ZipEntry entry = (ZipEntry) entries.nextElement();
			entry.setUnixMode(644);//解决Linux乱码
			String zipEntryName = entry.getName();
			System.out.println(zipEntryName);
			InputStream in = zip.getInputStream(entry);
			BufferedInputStream bis = new BufferedInputStream(in);
			String outPath = (descDir+"/"+zipEntryName).replaceAll("\\*","/");
			//判断路径是否存在，不存在则创建文件路径
			File file = new File(outPath.substring(0,outPath.lastIndexOf("/")));
			if (!file.exists()){
				file.mkdirs();
			}
			//判断文件全路径是否为文件夹，如果是上面已经上传，不需要解压
			if (new File(outPath).isDirectory()){
				continue;
			}
			//输出文件路径信息
			String suff = getFileTail(outPath);// 获取文件后缀
			if(suff.equals("docx")){
				pathList.add(outPath);
			
			}
			
			OutputStream out = new FileOutputStream(outPath);
			byte[] buf1 = new byte[1024];
			int len;
			while ((len = in.read(buf1)) > 0){
				out.write(buf1,0,len);
			}
			bis.close();
			in.close();
			//out.flush();
			out.close();
		}
		zip.close();
		System.out.println("*******************解压完毕********************");
		System.out.println("*******************解析文档********************");
		for(String path:pathList){
			parseWord(request,response, path);
		}
	}
%>

<%!//清空文件夹
public static boolean deleteDir(String path){
	File file = new File(path);
	if(!file.exists()){//判断是否待删除目录是否存在
		System.err.println("文件夹不存在");
		return false;
	}
	
	String[] content = file.list();//取得当前目录下所有文件和文件夹
	for(String name : content){
		File temp = new File(path, name);
		if(temp.isDirectory()){//判断是否是目录
			deleteDir(temp.getAbsolutePath());//递归调用，删除目录里的内容
			temp.delete();//删除空目录
		}else{
			if(!temp.delete()){//直接删除文件
				System.err.println(name+":删除失败!");
			}
		}
	}
	return true;
}
%>
<%!
这部分可能涉及公司的东西就不暴露了,主要是解析word文档内容和入库.

%>

public static boolean checkAddress(String address){
	if (address.equals("广东省")){
        return true;
    }
    System.out.println(address);
    String regex="((?<province>[^省]+省|.+自治区)|上海|北京|天津|重庆)(?<city>[^市]+市|.+自治州)(?<county>[^县]+县|.+区|.+镇|.+局)?(?<town>[^区]+区|.+镇)?(?<village>.*)";
    Matcher m= Pattern.compile(regex).matcher(address);
    String province=null,city=null,county=null,town=null,village=null;
	
    List<Map<String,String>> table=new ArrayList<Map<String,String>>();
    Map<String,String> row=null;
    while(m.find()){
        row=new LinkedHashMap<String,String>();
        province=m.group("province");
        row.put("province", province==null?"":province.trim());
        city=m.group("city");
        row.put("city", city==null?"":city.trim());
        county=m.group("county");
        row.put("county", county==null?"":county.trim());
        town=m.group("town");
        row.put("town", town==null?"":town.trim());
        village=m.group("village");
        row.put("village", village==null?"":village.trim());
        table.add(row);
    }
    System.out.println(table);
    if (table.size()==0){
        System.out.println("问题属地格式存在问题!");
        return false;
    }else{
        
        return true;
    }
}


public static Date changeDate(String date) throws Exception{
    //日期转换 4月13----转成Date
    if(date==null || date.length()==0){
    	return null;
    }
    Calendar calendar = Calendar.getInstance();
    String year = String.valueOf(calendar.get(Calendar.YEAR));
    String month = date.substring(0,date.indexOf("月"));
    String day = date.substring(date.indexOf("月")+1,date.length());
    String stringDate = year+"-"+month+"-"+day;
    //将String转换成Date
    
    DateFormat fmt =new SimpleDateFormat("yyyy-MM-dd");
    Date resultDate = fmt.parse(stringDate);
    return resultDate;
}



//获取后缀
public static String getFileTail(String fileName){
        if (fileName.indexOf('.')>0){
            return fileName.substring(fileName.indexOf('.')+1,fileName.length());
        }else{
            return "";
        }

    }