Conversion of bean classes and maps in Java

1  PackageCom.studey.mapTbean;2 3 ImportJava.beans.BeanInfo;4 Importjava.beans.IntrospectionException;5 ImportJava.beans.Introspector;6 ImportJava.beans.PropertyDescriptor;7 Importjava.lang.reflect.InvocationTargetException;8 ImportJava.lang.reflect.Method;9 ImportJava.util.HashMap;Ten ImportJava.util.Map; One  A  Public classBeanutil { -  -      Public Static voidMain (string[] args)throwsException { the  -Map<string, object> MP =NewHashmap<string, object>(); -Mp.put ("name", "Tom Cat"); -Mp.put ("addr", 178); +Mp.put ("tel", "123456"); -  +Personbean person = Map2bean (MP, Personbean.class); ASystem.out.println ("Transmap2bean Map Info:"); at          for(Map.entry<string, object>Entry:mp.entrySet ()) { -System.out.println (Entry.getkey () + ":" +Entry.getvalue ()); -         } -System.out.println ("Bean Info:"); -System.out.println ("Name:" +person.getname ()); -System.out.println ("Addr:" +person.getaddr ()); inSystem.out.println ("MN:" +Person.gettel ()); -  to Bean2map (person, MP); +System.out.println ("Transbean2map Map Info:"); -          for(Map.entry<string, object>Entry:mp.entrySet ()) { theSystem.out.println (Entry.getkey () + ":" +Entry.getvalue ()); *         } $     }Panax Notoginseng  -     //Maptobean Method: the  +      Public Static<t, K, v> T Map2bean (map<k, v> MP, class<t>beancls) A             throwsException, IllegalArgumentException, invocationtargetexception { theT t =NULL; +         Try { -  $BeanInfo BeanInfo =Introspector.getbeaninfo (BEANCLS); $propertydescriptor[] PropertyDescriptors =beaninfo.getpropertydescriptors (); -  -t =beancls.newinstance (); the  -              for(PropertyDescriptor property:propertydescriptors) {WuyiString key =property.getname (); the  -                 if(Mp.containskey (key)) { WuObject value =Mp.get (key); -Method setter = Property.getwritemethod (); About       
 $ Setter.invoke (t, value); -                 } -             } -  A}Catch(introspectionexception e) { +  the e.printstacktrace (); -         } $         returnT; the     } the  the     //Beantomap Method: the  -      Public Static<t, K, v> map<string, object> bean2map (T Bean, map<string, object>MP) in             throwsException, illegalaccessexception { the  the         if(Bean = =NULL) { About             return NULL; the         } the  the         Try { +BeanInfo BeanInfo =Introspector.getbeaninfo (Bean.getclass ()); -propertydescriptor[] PropertyDescriptors =beaninfo.getpropertydescriptors (); the Bayi              for(PropertyDescriptor property:propertydescriptors) { theString key =property.getname (); the  -                 if(!key.equals ("Class")) { -  theMethod getter = Property.getreadmethod ();
 the                                                                 
 the Object value; the  -Value =Getter.invoke (bean); the mp.put (key, value); the                 } the 94             } the  the}Catch(introspectionexception e) { the 98 e.printstacktrace (); About}Catch(Illegalaccessexception | IllegalArgumentException |invocationtargetexception e) { -            
101 e.printstacktrace ();102 103         }104         returnMP; the 106     }107}

1  PackageCom.studey.mapTbean;2 3  Public classPersonbean {4     PrivateString name;5     PrivateInteger addr;6     PrivateString Tel;7   8      PublicString GetName () {9         returnname;Ten     }  One    A      Public voidsetName (String name) { -          This. Name =name; -     }  the    -      PublicInteger getaddr () { -         returnaddr; -     }  +    -      Public voidsetaddr (Integer addr) { +          This. addr =addr; A     }  at    -      PublicString Gettel () { -         returnTel; -     }  -    -      Public voidSettel (String tel) { in          This. Tel =Tel; -     }  to    +}

Operation Result:

1 Transmap2bean Map Info: 2 Name:tom Cat 3 tel:123456 4 addr:178 5Bean Info:  6name:tom Cat  7 A ddr:178 8 mn:123456 9transbean2map Map Info:name:tom Cat  tel:123456 addr:178

Conversion of bean classes and maps in Java