spring tool suite

) Throws an exception when text is null or has a length of 0;5. HasText (string text)/HasText (string text, string message)Text cannot be null and must contain at least one character that is not a space, otherwise throws an exception;6. isinstanceof (class Clazz, Object obj)/isinstanceof (class type, object obj, String message)If obj cannot be properly styled as clazz the specified class will throw an exception;7. isassignable (class Supertype, class subtype)/Isassignable (class Supertype, clas

Enhanced simplified version after Spring encryption tool Security3.1, springsecurity3.1Enhanced versions increase the number of encrypted strings to 80 bits, and the hash values generated each time are different. Package com. rapido. utils; import org. springframework. security. crypto. password. passwordEncoder; import org. springframework. security. crypto. password. standardPasswordEncoder;/*** enhanced

Not only does Spring provide a full-featured application development framework, but it also has a number of tool classes that you can use directly when you write a program, not only in spring applications but also in other applications, most of which can be detached from spring The frame is used. Knowing what handy

classTestbridgemethod { Public Static voidMain (string[] args) {Classclass; Method[] Methods=Clazz.getmethods (); for(Method method:methods) {System.out.println (Method.getname ()+ ":" + arrays.tostring (Method.getparametertypes ()) +Method.isbridge ()); } }}classP { Publict Test (T t) {returnT; }}classSextendsP{@Override Publicstring Test (String t) {returnT; }}The result of the operation is:Test:[class Java.lang.string]falseTest:[class Java.lang.object]trueGetclass:[]falseHashcode:[]f

: Total number of records, total pages, current pages, paging size, etc.pageinfoint pages = Pageinfo.getpages ();System.out.println ("pages:" + pages);int pageSize = Pageinfo.getpagesize ();System.out.println ("pagesizes:" + pageSize);int size = Pageinfo.getsize ();SYSTEM.OUT.PRINTLN ("Size:" + size);Long total = Pageinfo.gettotal ();System.out.println ("total:" + all);}}The results are as follows:Tbitem [id=858025, title= Samsung I8552 White Unicom 3G mobile phone dual sim, sellpoint= affordabl

The class of access resources provided by the JDK does not satisfy the access requirements of various underlying resources, so spring designs a resource interface that provides the application with more powerful access to the underlying resources.Main methods:Boolean exists () to determine if a resource existsBoolean IsOpen () to determine if the resource is already openURL GetURL () if the underlying resource can be represented as a URL, the method r

Encodedresourceexample {public static void Main (string[] args) throws Throwable {Resource res = new Classpathresource ("Conf/file1.txt");① the encoding format for the specified file resource (UTF-8)Encodedresource encres = new Encodedresource (res, "UTF-8");② so that the contents of the file can be read correctly without garbledString content = filecopyutils.copytostring (Encres.getreader ());SYSTEM.OUT.PRINTLN (content);}}Access the Spring containe

Spring obtains the implementation method of the ApplicationContext object tool class, How to Implement Spring's tool class for obtaining ApplicationContext objects (1) tool class: Package com. util; import org. springframework. context. applicationContext; import org. springframework. context. support. classPathXmlA

Last night a buddy needs to get the target object of the proxy object, find the document found no corresponding tool class, so I wrote a share to everyone. Can obtain the target object of the JDK dynamic Agent/cglib proxy object agent.Problem Description::I now have a tricky problem, to save the object through the spring managed service class, which is obtained through reflection, and it is experimentally d

(1) Implements the tool class:Package Com.util;import Org.springframework.context.applicationcontext;import Org.springframework.context.support.classpathxmlapplicationcontext;final public class Applicationcontextutil { private static ApplicationContext ac=null;private Applicationcontextutil () {}static{ac=new Classpathxmlapplicationcontext ("Applicationcontext.xml");} public static ApplicationContext Getapplicationcontext () {//Get returned container

;ImportOrg.springframework.core.io.support.EncodedResource;Importorg.springframework.util.FileCopyUtils; Public classEncodedresourceexample { Public Static voidMain (string[] args)throwsThrowable {Resource res=NewClasspathresource ("Conf/file1.txt"); //① the encoding format for the specified file resource (UTF-8)Encodedresource encres =NewEncodedresource (res, "UTF-8"); //② so that the contents of the file can be read correctly without garbledString content =filecopyutils.copytostring (Encres.ge

,size_16,text_qduxq1rp5y2a5a6i,color_ffffff,t_100,g_se,x_10,y_10,shadow_90,type_zmfuz3pozw5nagvpdgk=) **6, run the program **eclipse environment running: Run as--spring Boot app package run: Right-click Project Maven-maven install, project directory target folder generate Jar package, cmd run. The initial run of the project will download the required dependent libraries for a long time. After the eclipse environment is running successfully, the interf

(class type, object obj, String message)If obj cannot be properly styled as clazz the specified class will throw an exception;7. Isassignable (class Supertype, class subtype)/Isassignable (class Supertype, class subtype, String message)Subtype must be able to match by type to supertype, otherwise an exception will be thrown;Use the Assert assertion class to simplify code for method-in-parameter detection, such as InputStream getData (String file) after applying the Assert assertion class, its c

= ((Advisedsupport) Advised.get (Dynamicadvisedinterceptor)). Gettargetsource (). Gettarget (); return target; } private Static object Getjdkdynamicproxytargetobject (object proxy) throws Exception { Field h = Proxy.getclass (). Getsuperclass (). Getdeclaredfield ("H"); H.setaccessible (true); Aopproxy aopproxy = (aopproxy) h.get (proxy); Field advised = Aopproxy.getclass (). Getdeclaredfield ("advised"); Advised.setaccessible (true); Object target = ((Ad

When we apply a service to a non-controller class, we report a null pointer,This is because of a workaround for calling the service report NULL NULL in the spring MVC generic class or tool class (call service Java.lang.NullPointerException)By following the steps above to resolve your own tool class, you will find that the project is running and still reporting a

[] parames=Iterator.next (); for(inti = 0; i ) { Try{Parames[i]=NewString (Parames[i].getbytes (fromencoding), toencoding); } Catch(unsupportedencodingexception e) {e.printstacktrace (); }}}} filterchain.dofilter (request, response); } /*** Get the original encoding format *@returnOriginal encoding format*/ PublicString getfromencoding () {returnfromencoding; } /*** Set the original encoding format *@paramfromencoding * Original encoding format*/ Public voids