String cmd = "SELECT d FROM Device d WHERE d.agentId IN :agentId";
Query query = entityManager.createQuery(cmd);
query.setParameter("agentId", dealAgentIds);
/Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home//Library/Java/JavaVirtualMachines/jdk1.8.0_11.jdk/Contents/Home
Filter and there are great explanation and example in StackOverflow Servlet-Filter wiki.needsAuthenticationmethod):@WebFilter("/*")
public class LoginFilter implements Filter {
@Override
public void init(FilterConfig config)
throws ServletException {
// If you have any in web.xml, then you could get them
// here by config.getInitParameter("name") and assign it as field.
}
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
HttpSession session = request.getSession(false);
String requestPath = httpServletRequest.getRequestURI();
if (needsAuthentication(requestPath) ||
session == null ||
session.getAttribute("user") == null) { // change "user" for the session attribute you have defined
response.sendRedirect(request.getContextPath() + "/login"); // No logged-in user found, so redirect to login page.
} else {
chain.doFilter(req, res); // Logged-in user found, so just continue request.
}
}
@Override
public void destroy() {
// If you have assigned any expensive resources as field of
// this Filter class, then you could clean/close them here.
}
//basic validation of pages that do not require authentication
private boolean needsAuthentication(String url) {
String[] validNonAuthenticationUrls =
{ "Login.jsp", "Register.jsp" };
for(String validUrl : validNonAuthenticationUrls) {
if (url.endsWith(validUrl)) {
return false;
}
}
return true;
}
}app and then change the web filter to@WebFilter("/app/*")needsAuthentication method from the filter.long contentLen = Long.parseLong(request.getHeader("Content-Length"));
http://stackoverflow.com/questions/7423285/javax-servlet-httpservletrequest-getcontentlength-returns-int-only
public class BrowserVersionDetect {
public static void main(String[] args) {
String userBrowser = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; MATP)";
userBrowser = userBrowser.toLowerCase();
String browserVersion=userBrowser.substring(userBrowser.indexOf("msie")).split(";")[0];
String majorNumber
= browserVersion.split(" ")[1];
System.out.println("browserVersion:" + browserVersion);
System.out.println("majorNumber:" + majorNumber);
}
}
JAVA_OPTS="$JAVA_OPTS -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/usr/local/TOMCAT/logs/heap-$(date +%Y-%m%d-%H%M).dump"
