Java
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Error “java.lang.numberformatexception: for input string:” “” pass JSON array to spring MVC
I received the error "Java. Lang. numberformatexception: input string:" "passing JSON array to spring MVC This is my J…… -
Java – extract the image into a blobstore
In my application, I need to do the following: I successfully uploaded, decompressed and saved the file @ blobstore, b…… -
Java – efficiency based on regular expression substitution
Which of the following is more effective and useful? value.replaceAll("['‘’`]","") value.replaceAll("['‘’`]+","") My …… -
Java – my Android application crashes, even if I’m catching the exception that caused it to crash
This is my code: private ArrayList<PInfo> getSelectedPackages() { ArrayList<PInfo> apps = new ArrayLis…… -
How to display iText image objects in Java
I'm creating a PDF reader in Java In order to read PDF files, I am using iText library I have a sample code to read PD…… -
Java – use the classnotfound exception of Jackson objectmapper
I have a spring 3 MVC application and I'm setting up some Ajax actions @RequestMapping(value="add",method=RequestMetho…… -
Does java have the equivalent of pump mode to handle slow clients?
At present, we have an architecture in which the server streams data to the client We find that the client cannot proc…… -
Java – spring 3.0 when AspectJ is loaded 5. Release Tomcat 7 cannot work normally
I'm trying to find out why load - time weaving hasn't worked on my web application yet For my normal application (not …… -
How to bind text to jlabel in Java?
There are several GUI forms in my java application All tables have text I set text for my component from a shared obje…… -
Java – will occurs when trying to enable users via LDAP_ NOT_ Perform error
I am trying to create a new active directory user through LDAP, but the user was disabled at the time of creation I tr…… -
Java – how to record the execution of the nutch plug-in
I'm trying to build a custom nutch plug-in with special requirements I'm in Hadoop Log, but it has no relevance I adde…… -
Java – not all exceptions are mapped to resolveexception in simplemappingexceptionresolver
I override resolveexception in simplemappingexceptionresolver to send an e-mail containing stacktrace. The e-mail appl…… -
Java – playback frame error at startup
The first time I visited localhost: 9000, there was an error This is my first 'play run' command I am a novice in the …… -
Multithreading – OMP flush and CC NUMA architectures
I miss the CC NUMA architecture and the need to refresh variables As we all know, if two threads modify the same cache…… -
Java – how to sandbox slf4j
I have an application (extension) running in the smartfox server Most people don't know about smartfox, but the settin…… -
Java – ffmpeg for screenshots?
So I have an applet that captures the screen and makes sound from the microphone of the computer, How to use ffmpeg to…… -
How to make Java Swing applications display the mouse cursor effect of Compiz mouse plugin (Ubuntu)
Compiz showmouse plugin has some good effects on people with low vision Unfortunately, these effects do not work in ou…… -
Java – spring adds an external spring context at runtime
We have a home page with multiple components (widgets), which is a bit like a portal with portlets Some of these widge…… -
Java – can I find all (checked) exceptions that might be thrown in groovy code blocks?
I'm maintaining a groovy application that must have substandard error handling - countless catch instances (exception …… -
Java – should the entitymanager of JPA be requestscoped?
I am using JBoss 7 to develop web applications based on Java EE 6 class ForumServiceEJB { @PersistenceContext(type…… -
Java – what is a cached string?
What is a cached string? Or what is string caching? I've read this term many times at JNI, but I don't know what it is…… -
JAXB unmarshalling using @ xmljavatypeadapters
I have three classes @XmlRootElement public class GeofenceParameter{ private GeofenceCenterAddress geofenceCenter…… -
Java – safely handle concurrent Memcache updates in App Engine
Google Apps engine documentation for secure handling of concurrent Memcache updates: I am building an application that…… -
Java – set hibernate ‘default cascade’ attribute globally
I'm using annotated spring and hibernate I want to set the default cascade attribute for all classes in my mapping fil…… -
Rest – possible multithreading algorithms list all keys in large S3 buckets?
In S3 buckets containing a large number of keys, listing keys through the rest API is a very slow process >You can …… -
Java – how to retrieve Facebook auth code using restfb
I am using restfb to create a Java application Basically, the steps are as follows: >Redirect to Facebook as an exa…… -
Java bug？ GB2312 files cannot be read directly using scanner
I have a gb3212 encoded file (Chinese) Download the file from here http://lingua.mtsu.edu/chinese-computing/statistics…… -
Java – changing the log4j properties file at run time will result in the creation of an empty default log
I have an application that uses log4j to log in to a text file, and I put a log4j. Net in my executable jar file Prope…… -
Java – stop code formatting and remove spaces from eclipse
I recently started using java again. I set up my development environment in eclipse. It has a convenient format functi…… -
Java – Apache Tomcat simple comet Servlet
I'm trying to create a very simple comet servlet that will push Hello World messages to subscribers: @WebServlet("/Cha…… -
Java – (J2ME) how to get the file / resource list in my jar application
So I'm using J2ME and lwuit to create a mobile application My question is how to get the list of files in the jar appl…… -
Java – how to run jvisualvm. Java under the local system account under Windows Server 2008 exe？
I've been looking for a comparable method, such as publishing here for Windows Server 2003, to start jvisualvm under t……