Conversion of bean classes and maps in Java

Source: Internet
Author: User

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

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.