1 package com.augurit.agcom.rest;
  2 
  3 import java.io.BufferedInputStream;
  4 import java.io.BufferedOutputStream;
  5 import java.io.File;
  6 import java.io.FileInputStream;
  7 import java.io.FileNotFoundException;
  8 import java.io.FileOutputStream;
  9 import java.io.IOException;
 10 import java.io.InputStream;
 11 import java.io.OutputStream;
 12 import java.io.UnsupportedEncodingException;
 13 import java.net.MalformedURLException;
 14 import java.net.URL;
 15 import java.text.SimpleDateFormat;
 16 import java.util.ArrayList;
 17 import java.util.Date;
 18 import java.util.HashMap;
 19 import java.util.List;
 20 import java.util.Map;
 21 
 22 import javax.servlet.ServletException;
 23 import javax.servlet.http.HttpServletRequest;
 24 import javax.servlet.http.HttpServletResponse;
 25 import javax.ws.rs.Consumes;
 26 import javax.ws.rs.GET;
 27 import javax.ws.rs.POST;
 28 import javax.ws.rs.Path;
 29 import javax.ws.rs.PathParam;
 30 import javax.ws.rs.Produces;
 31 import javax.ws.rs.QueryParam;
 32 import javax.ws.rs.core.Context;
 33 import javax.ws.rs.core.MediaType;
 34 
 35 import net.sf.json.JSONArray;
 36 import net.sf.json.JSONObject;
 37 
 38 import org.apache.commons.fileupload.FileItem;
 39 import org.apache.commons.fileupload.FileItemFactory;
 40 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
 41 import org.apache.commons.fileupload.servlet.ServletFileUpload;
 42 import org.apache.ibatis.ognl.Evaluation;
 43 import org.apache.log4j.Logger;
 44 import com.augurit.agcom.system.util.PropertiesReader;
 45 
 46 
 47 import com.augurit.agcom.persistence.dao.IAgSupUploadfileDao;
 48 import com.augurit.agcom.persistence.dao.impl.AgSupUploadfileDaoImpl;
 49 import com.augurit.agcom.system.bean.AgSupUploadfile;
 50 import com.augurit.agcom.system.bean.User;
 51 import com.sun.jersey.api.spring.Autowire;
 52 import com.sun.jersey.spi.resource.Singleton;
 53 
 54 
 55 
 56 /**
 57  * rest文件上传、下载服务 使用方法,/rest/uploadservices/(方法名)/(后面这些是方法的参数)
 58  * 
 59  * @author Liuji
 60  */
 61 @Path("uploadservices")
 62 @Singleton
 63 @Autowire
 64 public class FileUploadDownRest{
 65     
 66    private IAgSupUploadfileDao agSupUploadfileDao=new AgSupUploadfileDaoImpl();
 67 
 68     private static final Logger log = Logger.getLogger(FileUploadDownRest.class);
 69    
 70     private static final String FILE_BELONG_OTHER="other";   //其他文件
 71     private static final String FILE_BELONG_ZHOULH="zhoulh";   //周例会文件
 72     /**
 73      * 文件上传
 74      * @param body
 75      * @return
 76      * @throws IOException 
 77      */
 78     @POST
 79     @Path("upload")
 80     @Consumes( { MediaType.MULTIPART_FORM_DATA, MediaType.APPLICATION_JSON })
 81     @Produces(MediaType.TEXT_PLAIN)
 82     //@Produces("application/json")
 83     public void upload( @Context HttpServletRequest request, @Context
 84                         HttpServletResponse response) throws IOException {
 85         response.setCharacterEncoding("UTF-8");
 86         String msg = "上传失败!";
 87         Boolean flag=false;
 88         Map<String, String> map= new HashMap<String, String>();
 89         String objectNameStr = "";
 90         String docbelongStr="";
 91         String fileName="";
 92         String fileFormat="";
 93         String saveFilePath="";
 94         boolean isMultipart = ServletFileUpload.isMultipartContent(request);
 95         if (isMultipart) {
 96             // 构造一个文件上传处理对象
 97             FileItemFactory factory = new DiskFileItemFactory();
 98             ServletFileUpload upload = new ServletFileUpload(factory);
 99             upload.setHeaderEncoding("utf-8");  // 支持中文文件名
100             List list = new ArrayList<FileItem>();
101             try {
102                 // 解析表单中提交的所有文件内容
103                 list = upload.parseRequest(request);
104                 for (int i = 0; i < list.size(); i++) {
105                     FileItem item = (FileItem) list.get(i);
106                     if(item.isFormField()){    //普通表单值
107                         map.put(item.getFieldName(), item.getString("UTF-8"));
108                     }else {
109                         String name = item.getName(); //获得上传的文件名(IE上是文件全路径,火狐等浏览器仅文件名)
110                         fileName = name.substring(
111                                 name.lastIndexOf('\\'+ 1, name.length());
112                         fileFormat=fileName.substring(fileName.lastIndexOf("."));   //文件扩展名
113                         objectNameStr = map.get("objectName");   //实体id
114                         docbelongStr = map.get("docbelong");   //文件归属
115                         
116                         //上传文件的保存的位置
117                     //    saveFilePath =PropertiesReader.getValue("agcom.fileupload.Path")+File.separator+objectNameStr;
118                         saveFilePath=pathHandle(objectNameStr, docbelongStr);
119 
120                       //  saveFilePath = request.getRealPath("/fileupload");  
121                         //    absolutePath = projectLayerId+"/"+fileName;
122                     //    parseFile(item, filePath);
123                         //上传操作
124                         flag=upload4Stream(fileName, saveFilePath, item.getInputStream());   //上传文件
125                         if(flag){
126                             msg = "上传成功!";
127                         }
128                     }
129                 }
130                 
131                  AgSupUploadfile agSupUploadfile= new AgSupUploadfile();// 保存属性信息
132                  User user = (User) request.getSession().getAttribute("user");
133                  agSupUploadfile.setUserId(String.valueOf(user.getId()));    
134                  agSupUploadfile.setCmp(user.getUserName());    //上传人
135                  agSupUploadfile.setCdt(getCurrentTime());      //上传时间 
136                  agSupUploadfile.setObjectName(map.get("objectName"));
137                  agSupUploadfile.setFileFormat(fileFormat);
138                  agSupUploadfile.setFilePath(saveFilePath);
139                  agSupUploadfile.setFileName(fileName);
140                  agSupUploadfile.setDocbelong(map.get("docbelong"));   //上传文件归属
141                  agSupUploadfile.setRemark(map.get("remark"));
142                  
143                  agSupUploadfileDao.addAgSupUploadfile(agSupUploadfile);
144             } catch (Exception e) {
145                 e.printStackTrace();
146             }
147         }
148         //msg="<html><body>"+msg+"<a href=\"javascript:window.history.back(-1);\">返回继续上传!</a>"+"</body></html>";
149         msg="<html><body>"+msg+"<input type=\"button\" value=\"返回继续上传\" onclick=\"window.history.back(-1);\"></body></html>";
150         //msg=msg+"<a href='javascript:window.history.back(-1);'>返回继续上传!</a>";
151         response.getWriter().write(msg);
152     //    response.getWriter().write("<script language=javascript>+eval(alert("+msg+"));</script>");
153     //    return "";
154     }
155 
156     /**
157      * 上传文件解析(文件名处理、上传)
158      * @param item
159      * @param task
160      * @return
161      */
162     private boolean parseFile(FileItem item, String filePath) throws Exception {
163         boolean flag = false;
164         try {
165             // 上传文件的上传路径
166             String name = item.getName();
167             // 上传文件的文件名
168             String fileName = name.substring(name.lastIndexOf('\\'+ 1, name
169                     .length());
170             if (fileName == null) {
171                 String[] str = fileName.split(".");
172                 if (str != null && str.length == 2)
173                     fileName = str[0+ (new Date()).getTime() + str[1];
174             }
175             flag = this
176                     .upload4Stream(fileName, filePath, item.getInputStream());
177         } catch (Exception e) {
178             e.printStackTrace();
179         }
180         return flag;
181     }
182 
183     /**
184      * 上传文件具体操作
185      * @param fileName 文件名
186      * @param filePath 文件上传路径
187      * @param inStream 文件流
188      * @return 上传是否成功
189      */
190     private boolean upload4Stream(String fileName, String filePath,
191             InputStream inStream) {
192         boolean result = false;
193         if ((filePath == null|| (filePath.trim().length() == 0)) {
194             return result;
195         }
196         OutputStream outStream = null
197         try {
198             String wholeFilePath = filePath + "\\" + fileName;
199             File dir = new File(filePath);
200             if (!dir.exists()) {
201                 dir.mkdirs();
202             }
203             File outputFile = new File(wholeFilePath);
204             boolean isFileExist = outputFile.exists();
205             boolean canUpload = true;
206             if (isFileExist) {
207                 canUpload = outputFile.delete();
208             }
209             if (canUpload) {    
210                 int available = 0;
211                 outStream = new BufferedOutputStream(new FileOutputStream(
212                         outputFile), 2048);
213                 byte[] buffer = new byte[2048];
214                 while ((available = inStream.read(buffer)) > 0) {
215                     if (available < 2048)
216                         outStream.write(buffer, 0, available);
217                     else {
218                         outStream.write(buffer, 02048);
219                     }
220                 }
221                 result = true;
222             }
223         } catch (Exception e) {
224             e.printStackTrace();
225             try {
226                 if (inStream != null) {
227                     inStream.close();
228                 }
229                 if (outStream != null)
230                     outStream.close();
231             } catch (Exception ex) {
232                 e.printStackTrace();
233             }
234         } finally {
235             try {
236                 if (inStream != null) {
237                     inStream.close();
238                 }
239                 if (outStream != null)
240                     outStream.close();
241             } catch (Exception e) {
242                 e.printStackTrace();
243             }
244         }
245         return result;
246     }
247 
248     /**
249      * 文件下载
250      * @throws UnsupportedEncodingException 
251      * @throws IOException 
252      */
253     @GET
254     @Path("/download")
255     @Produces(MediaType.TEXT_PLAIN)
256     public String downloadFile(@Context HttpServletRequest request, @Context HttpServletResponse response, 
257                                @QueryParam("fileName")String fileName, @QueryParam("objectName")String objectName,
258                                @QueryParam("docbelong")String docbelong) throws UnsupportedEncodingException {
259         response.setContentType("text/html; charset=UTF-8");
260         response.setCharacterEncoding("UTF-8");
261         Boolean isOnLine = false;   //是否在线浏览
262         //得到下载文件的名字
263         String fileNameStr = java.net.URLDecoder.decode(fileName, "utf-8");
264         //解决中文乱码问题
265         //  String filename=new String(request.getParameter("filename").getBytes("iso-8859-1"),"gbk");
266         
267         StringBuffer path=new StringBuffer(pathHandle(objectName, docbelong))
268                          .append(File.separator).append(fileNameStr);
269         File file = new File(path.toString());
270         FileInputStream fis = null;
271         BufferedInputStream buff = null;
272         OutputStream myout = null;
273         try {
274             if (!file.exists()) {
275                 response.sendError(404"File not found!");
276                 return "";
277             }
278             response.reset(); 
279             if (isOnLine) { //在线打开方式
280                 URL u = new URL("file:///" + path.toString());
281                 response.setContentType(u.openConnection().getContentType());
282                 response.setHeader("Content-Disposition""inline; filename="
283                         + new String(file.getName().getBytes("gbk"), "iso-8859-1"));
284             } else { //纯下载方式
285                 //设置response的编码方式
286                 response.setContentType("application/x-msdownload");
287                 //写明要下载的文件的大小
288                 response.setContentLength((int) file.length());
289                 //设置附加文件名(解决中文乱码)
290                 response.setHeader("Content-Disposition",
291                         "attachment;filename=" + new String(file.getName().getBytes("gbk"), "iso-8859-1"));
292             }
293 
294             fis = new FileInputStream(file);
295             buff = new BufferedInputStream(fis);
296             byte[] b = new byte[1024];//相当于我们的缓存
297             long k = 0;//该值用于计算当前实际下载了多少字节
298             //从response对象中得到输出流,准备下载
299             myout = response.getOutputStream();
300             while (k < file.length()) {
301                 int j = buff.read(b, 01024);
302                 k += j;
303                 //将b中的数据写到客户端的内存
304                 myout.write(b, 0, j);
305             }
306             //将写入到客户端的内存的数据,刷新到磁盘
307             myout.flush();
308         } catch (MalformedURLException e) {
309             // TODO Auto-generated catch block
310             e.printStackTrace();
311         } catch (FileNotFoundException e) {
312             // TODO Auto-generated catch block
313             e.printStackTrace();
314         } catch (IOException e) {
315             // TODO Auto-generated catch block
316             e.printStackTrace();
317         } finally {
318             try {
319                 if (fis != null) {
320                     fis.close();
321                 }
322                 if (buff != null)
323                     buff.close();
324                 if (myout != null)
325                     myout.close();
326             } catch (Exception e) {
327                 e.printStackTrace();
328             }
329         }
330 
331         return "";
332     }
333 
334     private String getCurrentTime() {
335         Date currentTime = new Date();
336         SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
337         String dateString = formatter.format(currentTime);
338         return dateString;
339     }
340     
341     /*文件路径处理
342      * 返回路径如:C\:\\Program Files\\Apache Software Foundation\\Tomcat 6.0\\upload\\10\\other
343      */
344     private String pathHandle(String objectName,String docbelong) {
345         
346         StringBuffer path = new StringBuffer(PropertiesReader
347                 .getValue("agcom.fileupload.Path"));
348         path.append(File.separator).append(objectName).append(File.separator);
349 
350         if ("0".equals(docbelong)) { // 其他文件
351             path.append(FileUploadDownRest.FILE_BELONG_OTHER);
352         } else if ("1".equals(docbelong)) { // 周例会文件
353             path.append(FileUploadDownRest.FILE_BELONG_ZHOULH);
354         }
355         return path.toString();
356     }
357     /**
358      * 获取文件列表
359      * @param request
360      * @param response
361      * @param docbelong 文件归属
362      * @param objectName
363      * @throws IOException
364      * @throws ServletException
365      *   请求路径如:http://localhost:8089/agcom/rest/uploadservices/filelist/0?objectName='10'
366      */
367     @GET
368     @Path("/filelist/{docbelong}")
369     @Produces("application/json")
370     public String getFileList(@Context HttpServletRequest request, @Context HttpServletResponse response, 
371                             @PathParam("docbelong")String docbelong, @QueryParam("objectName")String objectName) throws ServletException, IOException{
372         response.setContentType("text/html");
373         response.setCharacterEncoding("UTF-8");
374         Map<String,String> map=new HashMap<String, String>();
375         map.put("docbelong",docbelong);
376         map.put("objectName",objectName);
377         //根据objectName查询 关联的文件集合
378         IAgSupUploadfileDao agSupUploadfileDao=new AgSupUploadfileDaoImpl();
379         List<AgSupUploadfile> agSupUploadfiles=agSupUploadfileDao.selectByMoreParam(map);
380         JSONArray array=JSONArray.fromObject(agSupUploadfiles);  //json对象数组
381         String arrayStr=array.toString();    
382         return arrayStr;
383     }
384 }
posted on 2012-11-05 11:10 青城幻影 阅读(11729) 评论(5)  编辑  收藏
Comments
  • # e: 文件上传下载rest实现
    彭少勇
    Posted @ 2013-04-11 17:48
    下载附件下载不了
      回复  更多评论   
  • # e: 文件上传下载rest实现
    彭少勇
    Posted @ 2013-04-11 17:48
    附件下载不了  回复  更多评论   
  • # re: 文件上传下载rest实现
    garca
    Posted @ 2014-06-16 14:14
    尽管学到了想要的东西,但是文档里包含大量的业务内容,这种风格明显是拷贝的的  回复  更多评论   
  • # re: 文件上传下载rest实现
    韩少
    Posted @ 2014-09-25 17:00
    东西不错  回复  更多评论   
  • # re: 文件上传下载rest实现
    longer
    Posted @ 2015-08-05 14:15
    那些是Client上传,哪些是Server端接收代码啊?  回复  更多评论   

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