上传下载优化

display-server/web/biz/js/plugin/uploaddownload.js

require(["domReady!","wadeMobile", "util"], function(doc,WadeMobile) {
	var iscroll = new iScroll("content");
	var picDir = "picture";
	var picPath = "picture/my.png";
	
	/*选择图片*/
	/**
	 * 选择图片 
	 */
	$("#getPicture").tap(function() {
		WadeMobile.getPicture(function(filePath){
			$("#uploadFilePath").html(filePath);
		});
	});
	//上传
	/**
	 * 上传 
	 */
	$("#upload").tap(function() {
		var uploadFile = $("#uploadFilePath").html();
		if(!uploadFile){
		}
		/*单文件上传*/
		var params = Wade.DataMap();
		params.put("FILE_PATH",picDir);
		//服务端SESSION_ID不能为空,服务端配置verify="false"并不校验
		params.put("SESSION_ID",new Date().getTime());
		params.put("FILE_PATH",picPath);
		WadeMobile.uploadWithServlet(uploadFile, "UploadDownloadBean.upload", params.toString(), function(result){
			alert(result);
			var data = new Wade.DataMap(result);
			alert(data);
			$("#fileUpload").html(data.get("FILE_NMAE"));
			$("#remoteFilePath").html(data.get("FILE_PATH"));
		});
		/*多文件上传*/
		//有待补充
	});
	
	//下载
	/**
	 * 下载
	 * 常用相对路径,如果只有android,可使用绝对路径
	 */
	$("#download").tap(function() {
		//文件保存路径
		var savePath = picDir+"/my.png"; //支持绝对路径和相对路径
		var params = new Wade.DataMap();
		params.put("FILE_PATH", picDir);//下载文件的相对路径
		//服务端SESSION_ID不能为空,服务端配置verify="false"并不校验
		params.put("SESSION_ID",new Date().getTime());
		WadeMobile.downloadWithServlet(savePath, "UploadDownloadBean.download", params.toString(), function(result){
		params.put("FILE_PATH", picPath); //下载文件的路径
		WadeMobile.downloadWithServlet(picPath, "UploadDownloadBean.download", params.toString(), function(savePath){
			alert("下载成功:"+savePath);
			$("#downloadFilePath").html(savePath);
			
			/*var width = $("#downloadPicture").width();
			var width = $("#downloadPicture").width();
			var height = $("#downloadPicture").height();
			$("#downloadPicture").removeClass("e_imagePlaceHolder");
			$("#downloadPicture").html("<img height='" + height + "' width='" + width + "' src='" + path + "'/>");
			iscroll.refresh();*/
			alert(result);
			$("#downloadPicture").html("<img height='" + height + "' width='" + width + "' src='" + savePath + "'/>");
			iscroll.refresh();
		}, function(error){
			alert("下载错误:"+error);
		});
	});
});

display-server/web/template/webapp/plugin/UploadDownload.html

					</div>
				</li>
				<li>
					<div class="content content-vertical" ontap>
						<div class="info" id="remoteFilePath">服务器路径：</div>
					<div class="content content-vertical">
						<div class="info">服务器路径：<span id="remoteFilePath"></span></div>
					</div>
				</li>
			</ul>
				<li>
					<div class="content">
						<div class="main">
							<div class="title">点击下载图片</div>
							<div class="title">图片路径</div>
							<div class="info">
								下载图片路径为：<span id="downloadFilePath"></span>
								本地路径为：<span id="downloadFilePath"></span>
							</div>
						</div>
						<div class="fn fn-2" id="download">点击下载</div>

wade-mobile-func/src/com/wade/mobile/func/MobileNetWork.java

import com.wade.mobile.safe.MobileSecurity;
import com.wade.mobile.util.BusinessCache;
import com.wade.mobile.util.Constant;
import com.wade.mobile.util.DirectionUtil;
import com.wade.mobile.util.EscapeUnescape;
import com.wade.mobile.util.FileUtil;
import com.wade.mobile.util.FuncConstant;
public class MobileNetWork extends Plugin {
	private boolean hasSetSmsListener;
	private DirectionUtil directionUtil;
	public MobileNetWork(IWadeMobile wademobile) {
		super(wademobile);
		directionUtil = DirectionUtil.getInstance(context);
	}
	public void setSmsListener(JSONArray param) throws Exception {
	public void downloadWithServlet(JSONArray param) throws Exception {
		String savePath = param.getString(0);
		String dataAction = param.getString(1);
		IData dataParam = param.getString(2)==null?new DataMap():new DataMap(param.getString(2));
		IData dataParam = param.getString(2) == null ? new DataMap() : new DataMap(param.getString(2));
		downloadWithServlet(savePath, dataAction, dataParam);
	}
	
	public void downloadWithServlet(final String savePath, String dataAction, IData dataParam) throws Exception {
	public void downloadWithServlet(final String _savePath, String dataAction, IData dataParam) throws Exception {
		// TODO Auto-generated method stub
		Map<String, String> tempPostData = transPostData(dataAction, dataParam);
		final Map<String, Object> postData = new HashMap<String, Object>();
			@Override
			protected String doInBackground(String... arg0) {
				// TODO Auto-generated method stub
				String result = null;
				try{
				String savePath = _savePath;
				try {
					InputStream in = UnirestUtil.downloadByPost(MobileConfig.getInstance().getRequestUrl(), postData);
					FileUtil.writeFile(in, "/sdcard" + savePath);
					result = "下载成功";
				}catch(Exception e){
					MobileNetWork.this.error(savePath + "异常:"+e.getMessage());// 报错回调
					if (!savePath.startsWith(File.separator)) {
						savePath = directionUtil.getDirection(savePath, true);
					}
					File file = new File(savePath).getParentFile();
					if (!file.exists() && !file.mkdirs()) {
						Utility.error("创建下载文件夹失败!");
					}
					FileUtil.writeFile(in, savePath);
				} catch (Exception e) {
					MobileNetWork.this.error("[" + savePath + "]异常:" + e.getMessage());// 报错回调
				}
				return result;
				return savePath;
			}
			
			@Override
			protected void onPostExecute(String result) {
			protected void onPostExecute(String savePath) {
				// TODO Auto-generated method stub
				super.onPostExecute(result);
				if (result != null) {
					MobileNetWork.this.callback(result);// 正常回调
				super.onPostExecute(savePath);
				if (savePath != null) {
					MobileNetWork.this.callback(savePath);// 正常回调
				}
			}
		}.execute();