Spring lookup-method instance creation -


spring lookup-method attribute used method injection helps creates fresh instances every time when method invoked. container dynamically creates subclass class , overrides method. but, me 1 instances created normal injection , method injection. have posted complete code have tried. want understand how lookup-method working , how different normal injection. 

<bean id="processor" class="org.requestprocessor">         <lookup-method name="getresourcea" bean="resourcea"/>     </bean>      <bean id="resourcea" class="org.resourcea"/>     <bean id="resourceb" class="org.resourceb"/>   public abstract class requestprocessor {     @autowired     resourceb resourceb;     public resourceb getresourceb(){         return resourceb;     }      abstract resourcea getresourcea(); }   public class resourcea {     string url ="http://localhost:8080";     public resourcea(){         system.out.println("resource instance creation");     }      public string geturl() {         return url;     }      public void seturl(string url) {         this.url = url;     } }   public class resourceb {     string url ="http://localhost:8081";     public resourceb(){         system.out.println("resource b instance creation");     }      public string geturl() {         return url;     }      public void seturl(string url) {         this.url = url;     } }   public class springexample {     public static void main(string[] args) {         applicationcontext applicationcontext = new classpathxmlapplicationcontext("org/applicationcontext.xml");         requestprocessor processor = (requestprocessor)applicationcontext.getbean("processor");              (int i=0;i<3;i++){             resourcea resource = processor.getresourcea();             system.out.println(resource.geturl());         }         (int i=0;i<3;i++){             resourceb resource = processor.getresourceb();             system.out.println(resource.geturl());         }            } }

output above program is:

resource b instance creation resource instance creation http://localhost:8080 http://localhost:8080 http://localhost:8080 http://localhost:8081 http://localhost:8081 http://localhost:8081

i have found answer problem. have missed scope attribute in 2 beans. have add scope="prototype" 2 beans like:

<bean id="resourcea" class="org.resourcea" scope="prototype"/> <bean id="resourceb" class="org.resourceb" scope="prototype"/>

after change output is:

resource b instance creation resource instance creation http://localhost:8080 resource instance creation http://localhost:8080 resource instance creation http://localhost:8080 http://localhost:8081 http://localhost:8081 http://localhost:8081

Comments

Post a Comment

Popular posts from this blog

php - failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request -

this code i'm using find latitude , longitude of place: function coords($address){ echo $url="http://maps.googleapis.com/maps/api/geocode/json?address=".$address; $json = file_get_contents(urlencode($url)); $data = json_decode($json, true); print_r($data['results'][0]['geometry']['location']['lat']); print_r($data['results'][0]['geometry']['location']['lng']); } however returns warning: failed open stream: http request failed! http/1.0 400 bad request if use above code in simple procedure works fine not in function. note: have tried curl_init()... method produced same result? instead of encoding whole url encode address part. following code work fine $add='jamshoro phase 2'; $url="http://maps.googleapis.com/maps/api/geocode/json?address=".urlencode($add); $json = file_get_contents($url); $data = json_decode($json, true); print_r($data['r
Read more

java - How to filter a backspace keyboard input -

i have code gives message when key number pressed: txtvalueofclause.addeventfilter(keyevent.key_typed, new eventhandler<keyevent>() { @override public void handle(keyevent t) { char ar[] = t.getcharacter().tochararray(); char ch = ar[t.getcharacter().tochararray().length - 1]; if (!(ch >= '0' && ch <= '9')) { system.out.println("the char entered not number"); t.consume(); } } }); now if press on wrong button , press backspace remove it, error message. how can add backspace input if statement? i have found answer: txtvalueofclause.addeventfilter(keyevent.key_typed, new eventhandler<keyevent>() { @override public void handle(keyevent t) { char ar[] = t.getcharacter().tochararray(); char ch = ar[t.getcharacter().tochar
Read more

java - Show Soft Keyboard when EditText Appears -

i have code in android app, alert dialog , keyboard, , when dialog shown want keyboard appear. not , not sure why? here code: final alertdialog.builder alert = new alertdialog.builder(this); alert.settitle("title"); alert.setmessage("message"); final edittext input = new edittext(this); input.setinputtype(inputtype.type_class_number); alert.setview(input); input.setonfocuschangelistener(new view.onfocuschangelistener() { @override public void onfocuschange(view v, boolean hasfocus) { if (hasfocus) { log.i(tag, "in focus"); inputmethodmanager inputmethodmanager = (inputmethodmanager) getsystemservice(context.input_method_service); inputmethodmanager.showsoftinput(input, inputmethodmanager.show_implicit); } } }); but keyboard not appear though edit text in focus, , tell appear why, doesn't come up? thanks in advance.
Read more