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1
16 package dlog4j.action;
17
18 import java.awt.image.BufferedImage  ;
19 import java.io.File ;
20 import java.io.FileOutputStream ;
21 import java.text.SimpleDateFormat ;
22 import java.util.Date ;
23
24 import javax.imageio.ImageIO ;
25 import javax.servlet.http.HttpServletRequest ;
26 import javax.servlet.http.HttpServletResponse ;
27
28
29 import org.apache.commons.lang.StringUtils;
30 import org.apache.struts.action.ActionForm;
31 import org.apache.struts.action.ActionForward;
32 import org.apache.struts.action.ActionMapping;
33 import org.apache.struts.upload.FormFile;
34
35 import dlog4j.formbean.UploadFlashForm;
36 import dlog4j.formbean.UploadImageForm;
37
38
43 public class DlogUploadAction extends DlogActionBase {
44
45 public final static String UPLOADDIR_KEY = "uploadDir";
47 public final static String FILEPATH_KEY = "filePath";
48 public final static String IMAGESTRING_KEY = "imageString";
49 static String uploadDir = null;
50 static String dirName = null;
51
52
62 public ActionForward uploadImage(ActionMapping mapping, UploadImageForm form,
63 HttpServletRequest request, HttpServletResponse response)
64 throws Exception {
65 FormFile picture = form.getUploadFile();
66 String fn = getUniqueFileName(getFileExtendName(picture.getFileName()));
67 StringBuffer imgPath = new StringBuffer (uploadDir);
68 imgPath.append(File.separator);
69 imgPath.append(fn);
70 File imgFile = new File (imgPath.toString());
71 FileOutputStream fos = new FileOutputStream (imgFile);
72 try {
73 fos.write(picture.getFileData());
75 } finally {
76 fos.close();
77 }
78
79 int width = 0, height=0;
81 try{
82 BufferedImage bi = ImageIO.read(imgFile);
83 width = bi.getWidth();
84 height = bi.getHeight();
85 }catch(Exception e){
86 getServlet().log("uploadImage process image failed.",e);
87 }
88 String img = dirName+'/'+fn;
89 request.setAttribute(FILEPATH_KEY,img);
90 StringBuffer imgstr = new StringBuffer (128);
91 imgstr.append("<img SRC='");
92 imgstr.append(img);
93 imgstr.append("'");
94 if(StringUtils.isNotEmpty(form.getTxtAlign())) {
95 imgstr.append(" align='");
96 imgstr.append(form.getTxtAlign());
97 imgstr.append("'");
98 }
99 if(StringUtils.isNotEmpty(form.getTxtBorder())) {
100 imgstr.append(" border='");
101 imgstr.append(form.getTxtBorder());
102 imgstr.append("'");
103 }
104 if(StringUtils.isNotEmpty(form.getDisplayText())) {
105 imgstr.append(" alt='");
106 imgstr.append(form.getDisplayText());
107 imgstr.append("'");
108 }
109 boolean sizeok = false;
110 if(width > 600 || StringUtils.isNotEmpty(form.getTxtWidth())) {
111 imgstr.append(" width='");
112 int nWidth = getValue(600,form.getTxtWidth());
113 imgstr.append(nWidth);
114 imgstr.append("'");
115 if(nWidth==600){
116 int nHeight = (nWidth * height)/ width;
117 imgstr.append(" height='");
118 imgstr.append(nHeight);
119 imgstr.append("'");
120 sizeok = true;
121 request.setAttribute("width",String.valueOf(nWidth));
122 request.setAttribute("height",String.valueOf(nHeight));
123 }
124 }
125 if(!sizeok && (height > 450 || StringUtils.isNotEmpty(form.getTxtHeight()))) {
126 imgstr.append(" height='");
127 int nHeight = getValue(450,form.getTxtHeight());
128 imgstr.append(nHeight);
129 imgstr.append("'");
130 if(nHeight==450){
131 int nWidth = (nHeight * width) / height;
132 imgstr.append(" width='");
133 imgstr.append(nWidth);
134 imgstr.append("'");
135 request.setAttribute("width",String.valueOf(nWidth));
136 request.setAttribute("height",String.valueOf(nHeight));
137 }
138 }
139 imgstr.append("/>");
140 request.setAttribute(IMAGESTRING_KEY,imgstr.toString());
141 return mapping.getInputForward();
142 }
143
144 protected int getValue(int pvalue, String rvalue){
145 int rv = Integer.MAX_VALUE;
146 try{
147 rv = Integer.parseInt(rvalue);
148 }catch(Exception e){}
149 return Math.min(pvalue, rv);
150 }
151
160 public ActionForward uploadFlash(ActionMapping mapping, UploadFlashForm form,
161 HttpServletRequest request, HttpServletResponse response)
162 throws Exception {
163 FormFile picture = form.getUploadFile();
164 String fn = getUniqueFileName(getFileExtendName(picture.getFileName()));
165 FileOutputStream fos = new FileOutputStream (uploadDir + File.separator + fn);
166 try {
167 fos.write(picture.getFileData());
169 String flash = dirName+'/'+fn;
170 request.setAttribute(FILEPATH_KEY,flash);
171 } finally {
172 fos.close();
173 }
174 return mapping.getInputForward();
175 }
176
179 public ActionForward doDefault(ActionMapping mapping, ActionForm form,
180 HttpServletRequest request, HttpServletResponse response)
181 throws Exception {
182 if (uploadDir == null)
183 uploadDir = getUploadDir();
184 if(form instanceof UploadImageForm)
185 return uploadImage(mapping,(UploadImageForm)form,request,response);
186 if(form instanceof UploadFlashForm)
187 return uploadFlash(mapping,(UploadFlashForm)form,request,response);
188 return mapping.getInputForward();
189 }
190
194 protected String getUploadDir() {
195 if(dirName==null) {
196 dirName = servlet.getInitParameter(UPLOADDIR_KEY);
197 if (dirName == null)
198 dirName = "uploads";
199 }
200 String webpath = servlet.getServletContext().getRealPath(dirName);
201 if (webpath.endsWith(File.separator))
202 webpath += File.separator;
203 return webpath;
204 }
205
210 protected String getUniqueFileName(String extName) {
211 final SimpleDateFormat sdf =
212 new SimpleDateFormat ("yyyyMMddhhmmssSSSS.");
213 String fn = null;
214 do {
215 fn = sdf.format(new Date ()) + extName;
216 if (new File (uploadDir + fn).exists())
217 continue;
218 break;
219 } while (true);
220 return fn;
221 }
222
227 protected static String getFileExtendName(String file) {
228 int idx = file.lastIndexOf('.');
229 return (idx == -1 || idx == (file.length() - 1))
230 ? ""
231 : file.substring(idx + 1).toLowerCase();
232 }
233
234 public static void main(String [] args){
235 String str = null;
236 System.out.println(StringUtils.isEmpty(str));
237 }
238
239 }
240 |
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