1 public void filedown(HttpServletRequest request, HttpServletResponse response,
Member objMember)throws Exception{
2 FileInputStream in = null;
3 ServletOutputStream os = null;
4 BufferedOutputStream bos = null;
5 String fromPageId = (String) request.getAttribute("frompageid");
6 if(fromPageId == null) fromPageId = request.getParameter("frompageid");
7 if(fromPageId != null) {
8 AccessLogWriter.getInstance().writeLockLogFile(
9 objMember.getMemberID(), request.getSession().getId(),0,"90",fromPageId,"");
10 }
11
12 String sfilename = "";
13 String stargetFileName = "";
14 String submit = request.getParameter("download");
15 String projectid = (String) request.getAttribute("projectid");
16 String fileManagerId = (String) request.getAttribute("fileManagerId");
17 String fileid = (String) request.getAttribute("fileid");
18
19 if (submit != null) {
20 sfilename = request.getParameter("downloadFileName");
21 stargetFileName = request.getParameter("targetFileName");
22 }
23
24 if (sfilename==null||sfilename.equals("")) {
25 //点击URL的情况
26 sfilename = (String) request.getAttribute("downloadFileName");
27 stargetFileName = (String) request.getAttribute("targetFileName");
28 }
29 if(projectid == null){
30 projectid = request.getParameter("projectid");
31 }
32
33 if(fileManagerId == null){
34 fileManagerId = request.getParameter("fileManagerId");
35 }
36 if(fileid == null){
37 fileid = request.getParameter("fileid");
38 }
39 //文字转换
40 String ufilename = new String(sfilename.getBytes("iso-8859-1"), "Shift_JIS");
41 if (ufilename.indexOf("?") == -1) {
42 sfilename = ufilename;
43 }
44 String utargetFileName = new String(stargetFileName.getBytes("iso-8859-1"), "Shift_JIS");
45 if (utargetFileName.indexOf("?") == -1) {
46 stargetFileName = utargetFileName;
47 }
48
49 String saveFileName = new String(stargetFileName.getBytes("Shift_JIS"), "ISO-8859-1");
50
51 //& ，%26 符号转换
52 saveFileName = toIEParamaterString0to127(saveFileName);
53
54 File existFile = new File(sfilename.replace('\\', '/'));
55 if (!existFile.exists()) {
56 response.setContentType("text/html; charset=SHIFT_JIS");
57 PrintWriter out = response.getWriter();
58 out.println(
59 "<HTML><HEAD></HEAD><BODY>file isn't exist!</BODY></HTML>");
60 out.close();
61 return;
62 }
63
64 response.setHeader("Cache-Control", ""); //HTTP 1.1
65 response.setHeader("Pragma", "");
66 response.setDateHeader("Expires", 3600 * 1000);
67
68 response.setContentType("application/octet-stream");
69 response.setHeader("Content-Disposition", "attachment;filename=" + saveFileName);
70
71 File downloadFile = new File(sfilename);
72 response.setContentLength((int) downloadFile.length());
73
74 in = new FileInputStream(sfilename);
75
76 os = response.getOutputStream();
77 bos = new BufferedOutputStream(os);
78
79 byte[] abyte0 = new byte[2048];
80 int j;
81 int off = 0, len = abyte0.length;
82
83 while ((j = in.read(abyte0, off, len)) != -1) {
84 bos.write(abyte0, 0, j);
85 }
86 in.close();
87 bos.close();
88 os.close();
89 if(fromPageId != null) {
90 AccessLogWriter.getInstance().writeLockLogFile(
91 objMember.getMemberID(), request.getSession().getId(),1,"90",fromPageId,"");
92 }
93
94 return;
95 }
96
97 /**
98 *
99 * @param s
100 * @return
101 */
102 public String toIEParamaterString0to127(String s) {
103 StringBuffer sb = new StringBuffer();
104 for (int i = 0; i < s.length(); i++) {
105 char c = s.charAt(i);
106 if (c >= 0 && c <= 127) {
107 try{
108 if(c == 32){
109 sb.append("%20");
110 } else {
111 sb.append(java.net.URLEncoder.encode(s.substring(i, i+1),"Shift_JIS"));
112 }
113 }
114 catch(Exception e){
115 sb.append(c);
116 }
117 } else {
118 if(c >= 160 && c <= 223){
119 //半角kana 0xA0-0xDF
120 sb.append(s.substring(i, i+1));
121 } else {
122 //日语汉字 1个字节：0x80-0x9F、0xE0-0xFC
123 if((( c >= 128 && c <= 159) || (c >= 224 && c <= 252)) && (i +2 <= s.length())){
124 //取两行
125 sb.append(s.substring(i, i+2));
126 i++;
127 } else {
128 //已经是最后一行
129 sb.append(s.substring(i, i+1));
130 }
131 }
132 }
133 }
134 return sb.toString();
135 }