FileManager.java

package dbfount.test.core;

import java.io.File;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.nfwork.dbfound.core.DBFoundConfig;
import com.nfwork.dbfound.dto.QueryResponseObject;
import com.nfwork.dbfound.exception.DBFoundRuntimeException;
import com.nfwork.dbfound.model.base.JavaSupport;
import com.nfwork.dbfound.util.JsonUtil;
import com.nfwork.dbfound.web.WebWriter;

public class FileManager extends JavaSupport {

	Log log = LogFactory.getLog(this.getClass());

	@Override
	public void execute() throws Exception {
		FileItem fileItem = (FileItem) params.get("file").getValue();
		String path = params.get("path").getStringValue();
		path = path.replace("${@prejectRoot}", DBFoundConfig.getProjectRoot());
		path = path.replace("${@classpath}", DBFoundConfig.getClasspath());

		String fileName = params.get("file_name").getStringValue();
		File fold = new File(path);
		if (fold.exists() == false) {
			fold.mkdir();
		}
		File newFile = new File(path + fileName);
		fileItem.write(newFile);
	}

	public void delete() throws Exception {
		String path = params.get("path").getStringValue();
		path = path.replace("${@prejectRoot}", DBFoundConfig.getProjectRoot());
		path = path.replace("${@classpath}", DBFoundConfig.getClasspath());

		String fileName = params.get("file_name").getStringValue();
		File newFile = new File(path + fileName);

		delete(newFile);
	}

	public void delete(File file) {
		if (file.isDirectory()) {
			File[] files = file.listFiles();
			for (int i = 0; i < files.length; i++) {
				if (files[i].isFile()) {
					delete(files[i]);
				}
			}
			file.delete();
		} else {
			file.delete();
		}
	}

	public void down() throws Exception {
		String path = params.get("path").getStringValue();
		// path = new String(path.getBytes("ISO-8859-1"), "UTF-8");

		path = path.replace("${@prejectRoot}", DBFoundConfig.getProjectRoot());
		path = path.replace("${@classpath}", DBFoundConfig.getClasspath());
		String fileName = path.substring(path.lastIndexOf("/") + 1);
		params.get("file_name").setValue(fileName);
		params.get("file").setValue(path);
	}

	@SuppressWarnings("unchecked")
	public void listFile() {
		String path = params.get("path").getStringValue();
		path = path.replace("${@prejectRoot}", DBFoundConfig.getProjectRoot());
		path = path.replace("${@classpath}", DBFoundConfig.getClasspath());

		File fold = new File(path);
		if (fold.exists() == false) {
			throw new DBFoundRuntimeException("文件夹：" + path + "不存在！");
		}
		File[] files = fold.listFiles();

		QueryResponseObject object = new QueryResponseObject();
		List<Map> datas = new ArrayList<Map>();
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		for (File file : files) {
			Map data = new HashMap();
			data.put("file_type", file.isDirectory() ? 1 : 0);
			data.put("file_name", file.getName());
			if (file.isFile()) {
				data.put("file_size", formatFileSize(file.length()));
			}
			data.put("last_update_time",format.format(new Date(file.lastModified())));
			datas.add(data);
		}

		object.setDatas(datas);
		object.setSuccess(true);
		WebWriter.jsonWriter(context.response, JsonUtil.beanToJson(object));
		context.outMessage = false;
	}

	public String formatFileSize(long fileS) {// 转换文件大小
		DecimalFormat df = new DecimalFormat("#.00");
		String fileSizeString = "";
		if (fileS < 1024) {
			fileSizeString = df.format((double) fileS) + "B";
		} else if (fileS < 1048576) {
			fileSizeString = df.format((double) fileS / 1024) + "K";
		} else if (fileS < 1073741824) {
			fileSizeString = df.format((double) fileS / 1048576) + "M";
		} else {
			fileSizeString = df.format((double) fileS / 1073741824) + "G";
		}
		return fileSizeString;
	}
}