java跨全域兼容ie/ff/chrome浏览器多文件上传(原创)

package web; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.UnsupportedEncodingException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.jsp.JspFactory; import javax.servlet.jsp.PageContext; import Upload.Uploader; import com.jspsmart.upload.Request; /** * * @author [email protected] * @version 1.0 * */ public class UploadServlet extends HttpServlet { private static final long serialVersionUID = 2450102559616913758L; private static final String ENCODING = "utf-8"; private final String stateXMLversion = "<?xml version=\"1.0\" encoding=\"" + ENCODING + "\" ?>"; private final String startXml = "<result>"; private final String endXml = "</result>"; // 最大上传文件大小为100MB private final Long maxFileSize = 1024L * 1024L * 100L; /** * 构造请求 */ public UploadServlet() { super(); } public void destroy() { super.destroy(); } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request, response); } /** * 文件上传服务,请求参数需用urlencode进行编码,编码方式为utf-8 * 请求参数 datatype: 指定返回的数据格式json|xml,默认返回json格式 * callbackurl: 将上传的结果返回的地址,当此参数为空的时候,直接输出结果到页面(json格式) * cfunction: javascript回调的函数,当此参数为空的时候,系统默认为函数名为callback * username: 用户名 * password: 密码 */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Param param = null; StringBuilder sb = new StringBuilder(); String dataType = null; // 初始化 com.jspsmart.upload.SmartUpload su = new com.jspsmart.upload.SmartUpload(); JspFactory jsp1 = JspFactory.getDefaultFactory(); PageContext pageContext = jsp1.getPageContext(this, request, response, null, true, 8192, true); su.initialize(pageContext); //文件大小设置为100MB su.setMaxFileSize(maxFileSize); try { su.upload(); com.jspsmart.upload.File file = su.getFiles().getFile(0); String fileName = file.getFileName(); if(null == fileName || fileName.isEmpty() || file.getSize()<1) { throw new NullPointerException("文件为空"); } Uploader up = new Uploader(pageContext, request); up.SetOriFileName(false); up.setM_userFilename(null); up.SaveFile(file); if (null != dataType && dataType.equals("xml")) { sb.append(stateXMLversion); sb.append(startXml); getSuccessXml(sb, up.GetFilePathRel()); sb.append(endXml); } else { getSuccessJson(sb, up.GetFilePathRel()); } } catch (SecurityException se) { se.printStackTrace(); if (null != dataType && dataType.equals("xml")) { sb.append(stateXMLversion); sb.append(startXml); getMaxSizeFailXml(sb); sb.append(endXml); } else { getMaxSizeFailJson(sb); } } catch (Exception se) { se.printStackTrace(); if (null != dataType && dataType.equals("xml")) { sb.append(stateXMLversion); sb.append(startXml); getOtherErrorXml(sb); sb.append(endXml); } else { getOtherErrorJson(sb); } } finally { pageContext.getOut().clear(); pageContext.pushBody(); //解码 param = this.warpParam(su.getRequest()); dataType = param.getDataType(); // 1.验证用户和密码 if (!chkUser(param.getUserName(), param.getPassword())) { if (null != dataType && dataType.equals("xml")) { sb.append(stateXMLversion); sb.append(startXml); getValideFailXml(sb); sb.append(endXml); this.writeToPageXml(sb.toString(), response); } else { getValideFailJson(sb); this.writeToPageJson(sb.toString(), response); } return; } } // 3.返回结果 String callbackurl = param.getCallBackUrl(); if(null == callbackurl || callbackurl.isEmpty()) { if (null != dataType && dataType.equals("xml")) { sb.append(stateXMLversion); writeToPageXml(sb.toString(),response); } else { writeToPageJson(sb.toString(),response); } return; } //urlencode String res = java.net.URLEncoder.encode(sb.toString(),ENCODING); String cfunction = null == param.getCFunction() || param.getCFunction().isEmpty()?"callback":param.getCFunction(); response.sendRedirect(callbackurl+"?data="+res+"&callback="+ cfunction); } private void getValideFailJson(StringBuilder sb) { sb.append("{\"flag\":\"2\",\"msg\":\"用户验证失败\", url:\"\"}"); } private void getValideFailXml(StringBuilder sb) { sb.append("<![CDATA[2|").append("用户验证失败|").append("]]>"); } private void getSuccessJson(StringBuilder sb, String url) { sb.append("{\"flag\":\"1\",\"msg\":\"上传成功\", url:\"" + url + "\"}"); } private void getSuccessXml(StringBuilder sb, String url) { sb.append("<![CDATA[1|上传成功|").append(url).append("]]"); } private void getMaxSizeFailJson(StringBuilder sb) { sb.append("{\"flag\":\"-1\",\"msg\":\"文件大小超过限制\", url:\"\"}"); } private void getMaxSizeFailXml(StringBuilder sb) { sb.append("<![CDATA[-1|文件大小超过限制|").append("]]"); } private void getOtherErrorJson(StringBuilder sb) { sb.append("{\"flag\":\"0\",\"msg\":\"上传失败,请稍后重试\", url:\"\"}"); } private void getOtherErrorXml(StringBuilder sb) { sb.append("<![CDATA[0|上传失败,请稍后重试|").append("]]"); } /** * 输出json结果到页面 * * @param data * 数据 * @param response * reponse */ private void writeToPageJson(String data, HttpServletResponse response) { response.setContentType("text/html;charset=" + ENCODING); writeToPage(response, data); } private void writeToPageXml(String data, HttpServletResponse response) { response.setContentType("text/xml"); writeToPage(response, data); } private void writeToPage(HttpServletResponse response, String data) { response.setCharacterEncoding(ENCODING); try { OutputStreamWriter osw = new OutputStreamWriter(response .getOutputStream(), ENCODING); osw.write(data); osw.flush(); osw.close(); } catch (UnsupportedEncodingException ue) { } catch (IOException ie) { } } public void init() throws ServletException { // TODO 初始化 } /** * 验证请求 * * @param u * u * @param p * p * @return */ private static boolean chkUser(String u, String p) { return true; } private Param warpParam(Request request) { String[] p = new String[5]; // 解码 p[0] = request.getParameter("datatype"); p[1] = request.getParameter("callbackurl"); p[2] = request.getParameter("cfunction"); p[3] = request.getParameter("username"); p[4] = request.getParameter("password"); // 解码 urlDecode(p); return new Param(p[0], p[1], p[2], p[3], p[4]); } private static void urlDecode(String... str) { for (int i = 0; i < str.length; i++) { String v = str[i]; if (null == v || v.isEmpty()) { continue; } try { str[i] = java.net.URLDecoder.decode(v, "utf-8"); } catch (UnsupportedEncodingException ue) { ue.printStackTrace(); } } } /** * 参数 * * @author cbai * */ class Param { private String dataType; private String callBackUrl; private String cFunction; private String userName; private String password; /** * * @param dataType * 数据类型 * @param callBackUrl