private Bitmap getBitmap(String url) {
File f = fileCache.getFile(url);
// from SD cache
Bitmap b = decodeFile(f);
if (b != null) return b;
// from web
try {
Bitmap bitmap = null;
URL imageUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection();
conn.setConnectTimeout(30000);
conn.setReadTimeout(30000);
conn.setInstanceFollowRedirects(true);
InputStream is = conn.getInputStream();
OutputStream os = new FileOutputStream(f);
Utils.CopyStream(is, os);
os.close();
bitmap = decodeFile(f);
return bitmap;
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
}
/**
* 执行网络请求加载图片
*
* @param url
* @param requiredSize
* @return
*/
private Bitmap getBitmap(String url, int requiredSize, PhotoToLoad photoToLoad) {
File f = fileCache.getFile(url);
// 先从文件缓存中查找是否有
Bitmap b = decodeFile(f, requiredSize);
if (b != null) return b;
// 最后从指定的url中下载图片
try {
Bitmap bitmap = null;
URL imageUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection();
conn.setConnectTimeout(30000);
conn.setReadTimeout(30000);
conn.setInstanceFollowRedirects(true);
InputStream is = conn.getInputStream();
OutputStream os = new FileOutputStream(f);
// CopyStream(is, os, conn.getContentLength(), photoToLoad);
photoToLoad.totalSize = conn.getContentLength();
int buffer_size = 1024;
byte[] bytes = new byte[buffer_size];
for (; ; ) {
int count = is.read(bytes, 0, buffer_size);
if (count == -1) {
break;
}
os.write(bytes, 0, count);
if (null != photoToLoad.onImageLoaderListener) { // 如果设置了图片加载监听，则回调
Message msg = rHandler.obtainMessage();
photoToLoad.currentSize += count;
msg.arg1 = IMAGE_LOADER_PROCESS;
msg.obj = photoToLoad;
rHandler.sendMessage(msg);
}
}
is.close();
os.close();
bitmap = decodeFile(f, requiredSize);
return bitmap;
} catch (Exception ex) {
Logger.w(TAG, ex);
return null;
}
}
public void clearFileCache() {
fileCache.clear();
}
/** 清空文件缓存或内存缓存 */
public void clearCache() {
memoryCache.clear();
fileCache.clear();
}
public int doEndTag() throws JspException {
try {
HttpServletRequest request = (HttpServletRequest) (pageContext.getRequest());
String file_ext = pageContext.getServletContext().getInitParameter("FileExtention");
String dbfs_ext = pageContext.getServletContext().getInitParameter("DatabaseExtention");
String db_name = pageContext.getServletContext().getInitParameter("DatabaseName");
String db_query = pageContext.getServletContext().getInitParameter("DatabaseQuery");
JspWriter out = pageContext.getOut();
int KEEP_CACHE_TIME = 300;
long current_time = System.currentTimeMillis();
if (pagebody != null || pageurl != null || dbfsurl != null) {
VariableTable vt = new VariableTable();
vt.loadContent(FileCache.getFileContent(getPhysicalPath("/global" + file_ext)));
vt.loadContent(FileCache.getFileContent(getPhysicalPath("default" + file_ext)));
if (pageurl != null) vt.loadContent(FileCache.getFileContent(getPhysicalPath(pageurl)));
if (dbfsurl != null) {
VariableTable dbparam = new VariableTable();
dbparam.add("path", java.sql.Types.VARCHAR);
dbparam.setValue("path", dbfsurl);
String pagebody = TextCache.getTextContent("source::" + dbfsurl);
if (pagebody == null) {
try {
DBPooledConnection dbconn = DBLogicalManager.getPoolConnection(db_name);
try {
pagebody = DBOperation.getString(dbconn, db_query, dbparam);
vt.loadContent(pagebody);
TextCache.putContent(
System.currentTimeMillis(), "source::" + dbfsurl, pagebody, 20);
} catch (java.sql.SQLException sqle) {
}
dbconn.close();
} catch (java.lang.Exception sqle) {
}
} else {
vt.loadContent(pagebody);
}
}
if (pagebody != null) vt.loadContent(pagebody);
getEnv(vt);
vt.add("JSP.TAG", java.sql.Types.VARCHAR);
vt.setValue("JSP.TAG", "YES");
vt.add("REQUEST.URL", java.sql.Types.VARCHAR);
vt.setValue("REQUEST.URL", request.getRequestURI());
if (vt.exists("WEBCHART.KEEP_CACHE_TIME")) {
KEEP_CACHE_TIME = vt.getInt("WEBCHART.KEEP_CACHE_TIME", 300);
if (KEEP_CACHE_TIME < 5) KEEP_CACHE_TIME = 5;
}
java.io.File xsl_file = null;
if (vt.getString("WEBCHART.XSLDOC") != null)
xsl_file = new java.io.File(getPhysicalPath(vt.getString("WEBCHART.XSLDOC")));
String cachekey = vt.parseString(vt.getString("WEBCHART.CACHE"));
String cache_content = null;
if (cachekey != null && !vt.exists("WEBCHART.FORCECACHE"))
cache_content = TextCache.getTextContent(cachekey);
if (cache_content == null) {
java.io.StringWriter xmlbuf = new java.io.StringWriter();
writeXMLHeader(xmlbuf, vt);
xmlbuf.write("<root>\n");
WebChart2.generateChart(xmlbuf, null, vt, file_ext);
xmlbuf.write("</root>\n");
java.io.StringWriter htmlbuf = new java.io.StringWriter();
if (xsl_file != null && xsl_file.exists())
BaseServlet.XML2HTML(
htmlbuf,
new java.io.StringReader(xmlbuf.toString()),
new java.io.StringReader(FileCache.getFileContent(xsl_file)),
FileCache.getFileContent(xsl_file));
else
BaseServlet.XML2HTML(
htmlbuf,
new java.io.StringReader(xmlbuf.toString()),
new java.io.StringReader(StaticResource.getTextResource("defaultxsl")),
StaticResource.getTextResource("defaultxsl"));
cache_content = htmlbuf.toString();
out.write(cache_content);
if (cachekey != null)
TextCache.putContent(current_time, cachekey, cache_content, KEEP_CACHE_TIME);
} else {
out.write(cache_content);
}
}
} catch (IOException ioe) {
throw new JspException("Error: " + ioe.getMessage());
}
return EVAL_PAGE;
}
