`
shangjava
  • 浏览: 1257059 次
  • 性别: Icon_minigender_1
  • 来自: 北京
文章分类
社区版块
存档分类
最新评论

提供静态方法访问单例对象中的方法

BeanApache 
阅读更多
  1. PropertyUtils 就是此列
  3. /*
  4. *LicensedtotheApacheSoftwareFoundation(ASF)underoneormore
  5. *contributorlicenseagreements.SeetheNOTICEfiledistributedwith
  6. *thisworkforadditionalinformationregardingcopyrightownership.
  7. *TheASFlicensesthisfiletoYouundertheApacheLicense,Version2.0
  8. *(the"License");youmaynotusethisfileexceptincompliancewith
  9. *theLicense.YoumayobtainacopyoftheLicenseat
  10. *
  11. *http://www.apache.org/licenses/LICENSE-2.0
  12. *
  13. *Unlessrequiredbyapplicablelaworagreedtoinwriting,software
  14. *distributedundertheLicenseisdistributedonan"ASIS"BASIS,
  15. *WITHOUTWARRANTIESORCONDITIONSOFANYKIND,eitherexpressorimplied.
  16. *SeetheLicenseforthespecificlanguagegoverningpermissionsand
  17. *limitationsundertheLicense.
  18. */
  21. packageorg.apache.commons.beanutils;
  23. importjava.beans.PropertyDescriptor;
  24. importjava.lang.reflect.InvocationTargetException;
  25. importjava.lang.reflect.Method;
  26. importjava.util.Map;
  28. importorg.apache.commons.collections.FastHashMap;
  31. /**
  32. *<p>UtilitymethodsforusingJavaReflectionAPIstofacilitategeneric
  33. *propertygetterandsetteroperationsonJavaobjects.</p>
  34. *
  35. *<p>Theimplementationsforthesemethodsareprovidedby<code>PropertyUtilsBean</code>.
  36. *Formoredetailssee{@linkPropertyUtilsBean}.</p>
  37. *
  38. *@authorCraigR.McClanahan
  39. *@authorRalphSchaer
  40. *@authorChrisAudley
  41. *@authorReyFrancois
  42. *@authorGregorRayman
  43. *@authorJanSorensen
  44. *@authorScottSanders
  45. *@version$Revision:644137$$Date:2008-04-0303:30:23+0100(Thu,03Apr2008)$
  46. *@seePropertyUtilsBean
  47. *@seeorg.apache.commons.beanutils.expression.Resolver
  48. */
  50. publicclass
  51. {
  54. //-----------------------------------------------------ManifestConstants
  57. /**
  58. *Thedelimiterthatpreceedsthezero-relativesubscriptforan
  59. *indexedreference.
  60. *
  61. *@deprecatedThenotationusedforpropertynameexpressionsisnow
  62. *dependantonthe{@linkorg.apache.commons.beanutils.expression.Resolver}
  63. *implementationbeingused.
  64. */
  65. publicstaticfinalcharINDEXED_DELIM='[';
  68. /**
  69. *Thedelimiterthatfollowsthezero-relativesubscriptforan
  70. *indexedreference.
  71. *
  72. *@deprecatedThenotationusedforpropertynameexpressionsisnow
  73. *dependantonthe{@linkorg.apache.commons.beanutils.expression.Resolver}
  74. *implementationbeingused.
  75. */
  76. publicstaticfinalcharINDEXED_DELIM2=']';
  79. /**
  80. *Thedelimiterthatpreceedsthekeyofamappedproperty.
  81. *
  82. *@deprecatedThenotationusedforpropertynameexpressionsisnow
  83. *dependantonthe{@linkorg.apache.commons.beanutils.expression.Resolver}
  84. *implementationbeingused.
  85. */
  86. publicstaticfinalcharMAPPED_DELIM='(';
  89. /**
  90. *Thedelimiterthatfollowsthekeyofamappedproperty.
  91. *
  92. *@deprecatedThenotationusedforpropertynameexpressionsisnow
  93. *dependantonthe{@linkorg.apache.commons.beanutils.expression.Resolver}
  94. *implementationbeingused.
  95. */
  96. publicstaticfinalcharMAPPED_DELIM2=')';
  99. /**
  100. *Thedelimiterthatseparatesthecomponentsofanestedreference.
  101. *
  102. *@deprecatedThenotationusedforpropertynameexpressionsisnow
  103. *dependantonthe{@linkorg.apache.commons.beanutils.expression.Resolver}
  104. *implementationbeingused.
  105. */
  106. publicstaticfinalcharNESTED_DELIM='.';
  109. //-------------------------------------------------------StaticVariables
  112. /**
  113. *Thedebuggingdetaillevelforthiscomponent.
  114. *
  115. *Notethatthisstaticvariablewillhaveunexpectedside-effectsif
  116. *thisclassisdeployedinasharedclassloaderwithinacontainer.
  117. *Howeverasitisactuallycompletelyignoredbythisclassduetoits
  118. *deprecatedstatus,itdoesn'tdoanyactualharm.
  119. *
  120. *@deprecatedThe<code>debug</code>staticpropertyisnolongerused
  121. */
  122. privatestaticintdebug=0;
  124. /**
  125. *The<code>debug</code>staticpropertyisnolongerused
  126. *@returndebugproperty
  127. *@deprecatedThe<code>debug</code>staticpropertyisnolongerused
  128. */
  129. publicstaticintgetDebug(){
  130. return(debug);
  131. }
  133. /**
  134. *The<code>debug</code>staticpropertyisnolongerused
  135. *@paramnewDebugdebugproperty
  136. *@deprecatedThe<code>debug</code>staticpropertyisnolongerused
  137. */
  138. publicstaticvoidsetDebug(intnewDebug){
  139. debug=newDebug;
  140. }
  142. //---------------------------------------------------------PublicMethods
  145. /**
  146. *Clearanycachedpropertydescriptorsinformationforallclasses
  147. *loadedbyanyclassloaders.Thisisusefulincaseswhereclass
  148. *loadersarethrownawaytoimplementclassreloading.
  149. *
  150. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  151. *
  152. *@seePropertyUtilsBean#clearDescriptors
  153. */
  154. publicstaticvoidclearDescriptors(){
  156. PropertyUtilsBean.getInstance().clearDescriptors();
  158. }
  161. /**
  162. *<p>Copypropertyvaluesfromthe"origin"beantothe"destination"bean
  163. *forallcaseswherethepropertynamesarethesame(eventhoughthe
  164. *actualgetterandsettermethodsmighthavebeencustomizedvia
  165. *<code>BeanInfo</code>classes).</p>
  166. *
  167. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  168. *
  169. *@paramdestDestinationbeanwhosepropertiesaremodified
  170. *@paramorigOriginbeanwhosepropertiesareretrieved
  171. *
  172. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  173. *accesstothepropertyaccessormethod
  174. *@exceptionIllegalArgumentExceptionifthe<code>dest</code>or
  175. *<code>orig</code>argumentisnull
  176. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  177. *throwsanexception
  178. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  179. *propetycannotbefound
  180. *@seePropertyUtilsBean#copyProperties
  181. */
  182. publicstaticvoidcopyProperties(Objectdest,Objectorig)
  183. throwsIllegalAccessException,InvocationTargetException,
  184. NoSuchMethodException{
  186. PropertyUtilsBean.getInstance().copyProperties(dest,orig);
  187. }
  190. /**
  191. *<p>Returntheentiresetofpropertiesforwhichthespecifiedbean
  192. *providesareadmethod.</p>
  193. *
  194. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  195. *
  196. *@parambeanBeanwhosepropertiesaretobeextracted
  197. *@returnThesetofpropertiesforthebean
  198. *
  199. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  200. *accesstothepropertyaccessormethod
  201. *@exceptionIllegalArgumentExceptionif<code>bean</code>isnull
  202. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  203. *throwsanexception
  204. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  205. *propetycannotbefound
  206. *@seePropertyUtilsBean#describe
  207. */
  208. publicstaticMapdescribe(Objectbean)
  209. throwsIllegalAccessException,InvocationTargetException,
  210. NoSuchMethodException{
  212. return(PropertyUtilsBean.getInstance().describe(bean));
  214. }
  217. /**
  218. *<p>Returnthevalueofthespecifiedindexedpropertyofthespecified
  219. *bean,withnotypeconversions.</p>
  220. *
  221. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  222. *
  223. *@parambeanBeanwhosepropertyistobeextracted
  224. *@paramname<code>propertyname[index]</code>ofthepropertyvalue
  225. *tobeextracted
  226. *@returntheindexedpropertyvalue
  227. *
  228. *@exceptionIndexOutOfBoundsExceptionifthespecifiedindex
  229. *isoutsidethevalidrangefortheunderlyingproperty
  230. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  231. *accesstothepropertyaccessormethod
  232. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  233. *<code>name</code>isnull
  234. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  235. *throwsanexception
  236. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  237. *propetycannotbefound
  238. *@seePropertyUtilsBean#getIndexedProperty(Object,String)
  239. */
  240. publicstaticObjectgetIndexedProperty(Objectbean,Stringname)
  241. throwsIllegalAccessException,InvocationTargetException,
  242. NoSuchMethodException{
  244. return(PropertyUtilsBean.getInstance().getIndexedProperty(bean,name));
  246. }
  249. /**
  250. *<p>Returnthevalueofthespecifiedindexedpropertyofthespecified
  251. *bean,withnotypeconversions.</p>
  252. *
  253. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  254. *
  255. *@parambeanBeanwhosepropertyistobeextracted
  256. *@paramnameSimplepropertynameofthepropertyvaluetobeextracted
  257. *@paramindexIndexofthepropertyvaluetobeextracted
  258. *@returntheindexedpropertyvalue
  259. *
  260. *@exceptionIndexOutOfBoundsExceptionifthespecifiedindex
  261. *isoutsidethevalidrangefortheunderlyingproperty
  262. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  263. *accesstothepropertyaccessormethod
  264. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  265. *<code>name</code>isnull
  266. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  267. *throwsanexception
  268. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  269. *propetycannotbefound
  270. *@seePropertyUtilsBean#getIndexedProperty(Object,String,int)
  271. */
  272. publicstaticObjectgetIndexedProperty(Objectbean,
  273. Stringname,intindex)
  274. throwsIllegalAccessException,InvocationTargetException,
  275. NoSuchMethodException{
  277. return(PropertyUtilsBean.getInstance().getIndexedProperty(bean,name,index));
  278. }
  281. /**
  282. *<p>Returnthevalueofthespecifiedmappedpropertyofthe
  283. *specifiedbean,withnotypeconversions.</p>
  284. *
  285. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  286. *
  287. *@parambeanBeanwhosepropertyistobeextracted
  288. *@paramname<code>propertyname(key)</code>ofthepropertyvalue
  289. *tobeextracted
  290. *@returnthemappedpropertyvalue
  291. *
  292. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  293. *accesstothepropertyaccessormethod
  294. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  295. *throwsanexception
  296. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  297. *propetycannotbefound
  298. *@seePropertyUtilsBean#getMappedProperty(Object,String)
  299. */
  300. publicstaticObjectgetMappedProperty(Objectbean,Stringname)
  301. throwsIllegalAccessException,InvocationTargetException,
  302. NoSuchMethodException{
  304. return(PropertyUtilsBean.getInstance().getMappedProperty(bean,name));
  306. }
  309. /**
  310. *<p>Returnthevalueofthespecifiedmappedpropertyofthespecified
  311. *bean,withnotypeconversions.</p>
  312. *
  313. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  314. *
  315. *@parambeanBeanwhosepropertyistobeextracted
  316. *@paramnameMappedpropertynameofthepropertyvaluetobeextracted
  317. *@paramkeyKeyofthepropertyvaluetobeextracted
  318. *@returnthemappedpropertyvalue
  319. *
  320. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  321. *accesstothepropertyaccessormethod
  322. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  323. *throwsanexception
  324. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  325. *propetycannotbefound
  326. *@seePropertyUtilsBean#getMappedProperty(Object,String,String)
  327. */
  328. publicstaticObjectgetMappedProperty(Objectbean,
  329. Stringname,Stringkey)
  330. throwsIllegalAccessException,InvocationTargetException,
  331. NoSuchMethodException{
  333. returnPropertyUtilsBean.getInstance().getMappedProperty(bean,name,key);
  335. }
  338. /**
  339. *<p>Returnthemappedpropertydescriptorsforthisbeanclass.</p>
  340. *
  341. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  342. *
  343. *@parambeanClassBeanclasstobeintrospected
  344. *@returnthemappedpropertydescriptors
  345. *@seePropertyUtilsBean#getMappedPropertyDescriptors(Class)
  346. *@deprecatedThismethodshouldnotbeexposed
  347. */
  348. publicstaticFastHashMapgetMappedPropertyDescriptors(ClassbeanClass){
  350. returnPropertyUtilsBean.getInstance().getMappedPropertyDescriptors(beanClass);
  352. }
  355. /**
  356. *<p>Returnthemappedpropertydescriptorsforthisbean.</p>
  357. *
  358. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  359. *
  360. *@parambeanBeantobeintrospected
  361. *@returnthemappedpropertydescriptors
  362. *@seePropertyUtilsBean#getMappedPropertyDescriptors(Object)
  363. *@deprecatedThismethodshouldnotbeexposed
  364. */
  365. publicstaticFastHashMapgetMappedPropertyDescriptors(Objectbean){
  367. returnPropertyUtilsBean.getInstance().getMappedPropertyDescriptors(bean);
  369. }
  372. /**
  373. *<p>Returnthevalueofthe(possiblynested)propertyofthespecified
  374. *name,forthespecifiedbean,withnotypeconversions.</p>
  375. *
  376. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  377. *
  378. *@parambeanBeanwhosepropertyistobeextracted
  379. *@paramnamePossiblynestednameofthepropertytobeextracted
  380. *@returnthenestedpropertyvalue
  381. *
  382. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  383. *accesstothepropertyaccessormethod
  384. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  385. *<code>name</code>isnull
  386. *@exceptionNestedNullExceptionifanestedreferencetoa
  387. *propertyreturnsnull
  388. *@exceptionInvocationTargetException
  389. *ifthepropertyaccessormethodthrowsanexception
  390. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  391. *propetycannotbefound
  392. *@seePropertyUtilsBean#getNestedProperty
  393. */
  394. publicstaticObjectgetNestedProperty(Objectbean,Stringname)
  395. throwsIllegalAccessException,InvocationTargetException,
  396. NoSuchMethodException{
  398. returnPropertyUtilsBean.getInstance().getNestedProperty(bean,name);
  400. }
  403. /**
  404. *<p>Returnthevalueofthespecifiedpropertyofthespecifiedbean,
  405. *nomatterwhichpropertyreferenceformatisused,withno
  406. *typeconversions.</p>
  407. *
  408. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  409. *
  410. *@parambeanBeanwhosepropertyistobeextracted
  411. *@paramnamePossiblyindexedand/ornestednameoftheproperty
  412. *tobeextracted
  413. *@returnthepropertyvalue
  414. *
  415. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  416. *accesstothepropertyaccessormethod
  417. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  418. *<code>name</code>isnull
  419. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  420. *throwsanexception
  421. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  422. *propetycannotbefound
  423. *@seePropertyUtilsBean#getProperty
  424. */
  425. publicstaticObjectgetProperty(Objectbean,Stringname)
  426. throwsIllegalAccessException,InvocationTargetException,
  427. NoSuchMethodException{
  429. return(PropertyUtilsBean.getInstance().getProperty(bean,name));
  431. }
  434. /**
  435. *<p>Retrievethepropertydescriptorforthespecifiedpropertyofthe
  436. *specifiedbean,orreturn<code>null</code>ifthereisnosuch
  437. *descriptor.</p>
  438. *
  439. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  440. *
  441. *@parambeanBeanforwhichapropertydescriptorisrequested
  442. *@paramnamePossiblyindexedand/ornestednameofthepropertyfor
  443. *whichapropertydescriptorisrequested
  444. *@returnthepropertydescriptor
  445. *
  446. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  447. *accesstothepropertyaccessormethod
  448. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  449. *<code>name</code>isnull
  450. *@exceptionIllegalArgumentExceptionifanestedreferencetoa
  451. *propertyreturnsnull
  452. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  453. *throwsanexception
  454. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  455. *propetycannotbefound
  456. *@seePropertyUtilsBean#getPropertyDescriptor
  457. */
  458. publicstaticPropertyDescriptorgetPropertyDescriptor(Objectbean,
  459. Stringname)
  460. throwsIllegalAccessException,InvocationTargetException,
  461. NoSuchMethodException{
  463. returnPropertyUtilsBean.getInstance().getPropertyDescriptor(bean,name);
  465. }
  468. /**
  469. *<p>Retrievethepropertydescriptorsforthespecifiedclass,
  470. *introspectingandcachingthemthefirsttimeaparticularbeanclass
  471. *isencountered.</p>
  472. *
  473. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  474. *
  475. *@parambeanClassBeanclassforwhichpropertydescriptorsarerequested
  476. *@returnthepropertydescriptors
  477. *@exceptionIllegalArgumentExceptionif<code>beanClass</code>isnull
  478. *@seePropertyUtilsBean#getPropertyDescriptors(Class)
  479. */
  480. publicstaticPropertyDescriptor[]
  481. getPropertyDescriptors(ClassbeanClass){
  483. returnPropertyUtilsBean.getInstance().getPropertyDescriptors(beanClass);
  485. }
  488. /**
  489. *<p>Retrievethepropertydescriptorsforthespecifiedbean,
  490. *introspectingandcachingthemthefirsttimeaparticularbeanclass
  491. *isencountered.</p>
  492. *
  493. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  494. *
  495. *@parambeanBeanforwhichpropertydescriptorsarerequested
  496. *@returnthepropertydescriptors
  497. *@exceptionIllegalArgumentExceptionif<code>bean</code>isnull
  498. *@seePropertyUtilsBean#getPropertyDescriptors(Object)
  499. */
  500. publicstaticPropertyDescriptor[]getPropertyDescriptors(Objectbean){
  502. returnPropertyUtilsBean.getInstance().getPropertyDescriptors(bean);
  504. }
  507. /**
  508. *<p>ReturntheJavaClassrepesentingthepropertyeditorclassthathas
  509. *beenregisteredforthisproperty(ifany).</p>
  510. *
  511. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  512. *
  513. *@parambeanBeanforwhichapropertydescriptorisrequested
  514. *@paramnamePossiblyindexedand/ornestednameofthepropertyfor
  515. *whichapropertydescriptorisrequested
  516. *@returnthepropertyeditorclass
  517. *
  518. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  519. *accesstothepropertyaccessormethod
  520. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  521. *<code>name</code>isnull
  522. *@exceptionIllegalArgumentExceptionifanestedreferencetoa
  523. *propertyreturnsnull
  524. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  525. *throwsanexception
  526. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  527. *propetycannotbefound
  528. *@seePropertyUtilsBean#getPropertyEditorClass(Object,String)
  529. */
  530. publicstaticClassgetPropertyEditorClass(Objectbean,Stringname)
  531. throwsIllegalAccessException,InvocationTargetException,
  532. NoSuchMethodException{
  534. returnPropertyUtilsBean.getInstance().getPropertyEditorClass(bean,name);
  536. }
  539. /**
  540. *<p>ReturntheJavaClassrepresentingthepropertytypeofthespecified
  541. *property,or<code>null</code>ifthereisnosuchpropertyforthe
  542. *specifiedbean.</p>
  543. *
  544. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  545. *
  546. *@parambeanBeanforwhichapropertydescriptorisrequested
  547. *@paramnamePossiblyindexedand/ornestednameofthepropertyfor
  548. *whichapropertydescriptorisrequested
  549. *@returnThepropertytype
  550. *
  551. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  552. *accesstothepropertyaccessormethod
  553. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  554. *<code>name</code>isnull
  555. *@exceptionIllegalArgumentExceptionifanestedreferencetoa
  556. *propertyreturnsnull
  557. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  558. *throwsanexception
  559. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  560. *propetycannotbefound
  561. *@seePropertyUtilsBean#getPropertyType(Object,String)
  562. */
  563. publicstaticClassgetPropertyType(Objectbean,Stringname)
  564. throwsIllegalAccessException,InvocationTargetException,
  565. NoSuchMethodException{
  567. returnPropertyUtilsBean.getInstance().getPropertyType(bean,name);
  568. }
  571. /**
  572. *<p>Returnanaccessiblepropertygettermethodforthisproperty,
  573. *ifthereisone;otherwisereturn<code>null</code>.</p>
  574. *
  575. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  576. *
  577. *@paramdescriptorPropertydescriptortoreturnagetterfor
  578. *@returnThereadmethod
  579. *@seePropertyUtilsBean#getReadMethod(PropertyDescriptor)
  580. */
  581. publicstaticMethodgetReadMethod(PropertyDescriptordescriptor){
  583. return(PropertyUtilsBean.getInstance().getReadMethod(descriptor));
  585. }
  588. /**
  589. *<p>Returnthevalueofthespecifiedsimplepropertyofthespecified
  590. *bean,withnotypeconversions.</p>
  591. *
  592. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  593. *
  594. *@parambeanBeanwhosepropertyistobeextracted
  595. *@paramnameNameofthepropertytobeextracted
  596. *@returnThepropertyvalue
  597. *
  598. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  599. *accesstothepropertyaccessormethod
  600. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  601. *<code>name</code>isnull
  602. *@exceptionIllegalArgumentExceptionifthepropertyname
  603. *isnestedorindexed
  604. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  605. *throwsanexception
  606. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  607. *propetycannotbefound
  608. *@seePropertyUtilsBean#getSimpleProperty
  609. */
  610. publicstaticObjectgetSimpleProperty(Objectbean,Stringname)
  611. throwsIllegalAccessException,InvocationTargetException,
  612. NoSuchMethodException{
  614. returnPropertyUtilsBean.getInstance().getSimpleProperty(bean,name);
  616. }
  619. /**
  620. *<p>Returnanaccessiblepropertysettermethodforthisproperty,
  621. *ifthereisone;otherwisereturn<code>null</code>.</p>
  622. *
  623. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  624. *
  625. *@paramdescriptorPropertydescriptortoreturnasetterfor
  626. *@returnThewritemethod
  627. *@seePropertyUtilsBean#getWriteMethod(PropertyDescriptor)
  628. */
  629. publicstaticMethodgetWriteMethod(PropertyDescriptordescriptor){
  631. returnPropertyUtilsBean.getInstance().getWriteMethod(descriptor);
  633. }
  636. /**
  637. *<p>Return<code>true</code>ifthespecifiedpropertynameidentifies
  638. *areadablepropertyonthespecifiedbean;otherwise,return
  639. *<code>false</code>.</p>
  640. *
  641. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  642. *
  643. *@parambeanBeantobeexamined(maybea{@linkDynaBean}
  644. *@paramnamePropertynametobeevaluated
  645. *@return<code>true</code>ifthepropertyisreadable,
  646. *otherwise<code>false</code>
  647. *
  648. *@exceptionIllegalArgumentExceptionif<code>bean</code>
  649. *or<code>name</code>is<code>null</code>
  650. *@seePropertyUtilsBean#isReadable
  651. *@sinceBeanUtils1.6
  652. */
  653. publicstaticbooleanisReadable(Objectbean,Stringname){
  655. returnPropertyUtilsBean.getInstance().isReadable(bean,name);
  656. }
  659. /**
  660. *<p>Return<code>true</code>ifthespecifiedpropertynameidentifies
  661. *awriteablepropertyonthespecifiedbean;otherwise,return
  662. *<code>false</code>.</p>
  663. *
  664. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  665. *
  666. *@parambeanBeantobeexamined(maybea{@linkDynaBean}
  667. *@paramnamePropertynametobeevaluated
  668. *@return<code>true</code>ifthepropertyiswriteable,
  669. *otherwise<code>false</code>
  670. *
  671. *@exceptionIllegalArgumentExceptionif<code>bean</code>
  672. *or<code>name</code>is<code>null</code>
  673. *@seePropertyUtilsBean#isWriteable
  674. *@sinceBeanUtils1.6
  675. */
  676. publicstaticbooleanisWriteable(Objectbean,Stringname){
  678. returnPropertyUtilsBean.getInstance().isWriteable(bean,name);
  679. }
  682. /**
  683. *<p>Setsthevalueofthespecifiedindexedpropertyofthespecified
  684. *bean,withnotypeconversions.</p>
  685. *
  686. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  687. *
  688. *@parambeanBeanwhosepropertyistobemodified
  689. *@paramname<code>propertyname[index]</code>ofthepropertyvalue
  690. *tobemodified
  691. *@paramvalueValuetowhichthespecifiedpropertyelement
  692. *shouldbeset
  693. *
  694. *@exceptionIndexOutOfBoundsExceptionifthespecifiedindex
  695. *isoutsidethevalidrangefortheunderlyingproperty
  696. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  697. *accesstothepropertyaccessormethod
  698. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  699. *<code>name</code>isnull
  700. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  701. *throwsanexception
  702. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  703. *propetycannotbefound
  704. *@seePropertyUtilsBean#setIndexedProperty(Object,String,Object)
  705. */
  706. publicstaticvoidsetIndexedProperty(Objectbean,Stringname,
  707. Objectvalue)
  708. throwsIllegalAccessException,InvocationTargetException,
  709. NoSuchMethodException{
  711. PropertyUtilsBean.getInstance().setIndexedProperty(bean,name,value);
  713. }
  716. /**
  717. *<p>Setsthevalueofthespecifiedindexedpropertyofthespecified
  718. *bean,withnotypeconversions.</p>
  719. *
  720. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  721. *
  722. *@parambeanBeanwhosepropertyistobeset
  723. *@paramnameSimplepropertynameofthepropertyvaluetobeset
  724. *@paramindexIndexofthepropertyvaluetobeset
  725. *@paramvalueValuetowhichtheindexedpropertyelementistobeset
  726. *
  727. *@exceptionIndexOutOfBoundsExceptionifthespecifiedindex
  728. *isoutsidethevalidrangefortheunderlyingproperty
  729. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  730. *accesstothepropertyaccessormethod
  731. *@exceptionIllegalArgumentExceptionif<code>bean</code>or
  732. *<code>name</code>isnull
  733. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  734. *throwsanexception
  735. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  736. *propetycannotbefound
  737. *@seePropertyUtilsBean#setIndexedProperty(Object,String,Object)
  738. */
  739. publicstaticvoidsetIndexedProperty(Objectbean,Stringname,
  740. intindex,Objectvalue)
  741. throwsIllegalAccessException,InvocationTargetException,
  742. NoSuchMethodException{
  744. PropertyUtilsBean.getInstance().setIndexedProperty(bean,name,index,value);
  745. }
  748. /**
  749. *<p>Setsthevalueofthespecifiedmappedpropertyofthe
  750. *specifiedbean,withnotypeconversions.</p>
  751. *
  752. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  753. *
  754. *@parambeanBeanwhosepropertyistobeset
  755. *@paramname<code>propertyname(key)</code>ofthepropertyvalue
  756. *tobeset
  757. *@paramvalueThepropertyvaluetobeset
  758. *
  759. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  760. *accesstothepropertyaccessormethod
  761. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  762. *throwsanexception
  763. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  764. *propetycannotbefound
  765. *@seePropertyUtilsBean#setMappedProperty(Object,String,Object)
  766. */
  767. publicstaticvoidsetMappedProperty(Objectbean,Stringname,
  768. Objectvalue)
  769. throwsIllegalAccessException,InvocationTargetException,
  770. NoSuchMethodException{
  772. PropertyUtilsBean.getInstance().setMappedProperty(bean,name,value);
  773. }
  776. /**
  777. *<p>Setsthevalueofthespecifiedmappedpropertyofthespecified
  778. *bean,withnotypeconversions.</p>
  779. *
  780. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  781. *
  782. *@parambeanBeanwhosepropertyistobeset
  783. *@paramnameMappedpropertynameofthepropertyvaluetobeset
  784. *@paramkeyKeyofthepropertyvaluetobeset
  785. *@paramvalueThepropertyvaluetobeset
  786. *
  787. *@exceptionIllegalAccessExceptionifthecallerdoesnothave
  788. *accesstothepropertyaccessormethod
  789. *@exceptionInvocationTargetExceptionifthepropertyaccessormethod
  790. *throwsanexception
  791. *@exceptionNoSuchMethodExceptionifanaccessormethodforthis
  792. *propetycannotbefound
  793. *@seePropertyUtilsBean#setMappedProperty(Object,String,String,Object)
  794. */
  795. publicstaticvoidsetMappedProperty(Objectbean,Stringname,
  796. Stringkey,Objectvalue)
  797. throwsIllegalAccessException,InvocationTargetException,
  798. NoSuchMethodException{
  800. PropertyUtilsBean.getInstance().setMappedProperty(bean,name,key,value);
  801. }
  804. /**
  805. *<p>Setsthevalueofthe(possiblynested)propertyofthespecified
  806. *name,forthespecifiedbean,withnotypeconversions.</p>
  807. *
  808. *<p>Formoredetailssee<code>PropertyUtilsBean</code>.</p>
  809. *
  810. *@parambeanBeanwhosepropertyistobemodified
  811. *@paramnamePossiblynestednameofthepropertytobemodified
  812. *@paramvalueValuetowhichthepropertyistobeset
    813. <li cl
    分享到：
    | 反射Array
    评论
    发表评论

    您还没有登录,请您登录后再发表评论

相关推荐

    单例模式中声明静态自己类型的指针编译显示未定义处理

    单例模式是软件设计模式中的一种，用于控制类的实例化过程，确保一个类只有一个实例，并提供一个全局访问点。这种模式在系统中需要频繁创建和销毁的对象，或者需要共享资源的情况下非常有用。然而，实现单例模式时，...

    第5天static静态关键字和单例模式.pptx

    - 饿汉式（静态常量）：类加载时创建单例对象。 - 枚举实现：简单高效，天然支持序列化机制。 通过上述介绍可以看出，`static`关键字和单例模式是Java编程中非常重要的两个概念。正确理解和使用它们能够帮助...

    43丨单例模式（下）：如何设计实现一个集群环境下的分布式单例模式？1

    在单例模式中，类的构造函数是私有的，防止外部直接创建对象，而是通过静态方法获取该类的唯一实例。单例模式的唯一性通常是在进程范围内，即在同一个进程中，无论何时调用单例类的获取实例方法，都会返回相同的对象...

    QT静态单例管理信号和槽

    总结来说，QT静态单例管理信号和槽是通过限制类实例化次数，提供全局访问点，以确保在整个应用程序中对特定资源的统一管理和通信。这种方式既保证了资源的唯一性，又简化了代码的结构，是Qt开发中常用的一种设计策略...

    深入掌握Python中的类方法与静态方法：使用技巧与实践案例

    在Python编程中，类方法和静态方法是面向对象编程的重要组成部分。它们提供了不同的方式来实现代码的封装和复用。类方法至少需要一个类作为第一个参数，通常用于访问和修改类属性。静态方法则不需要任何隐式或显式的...

    单例模式的四种实现方法

    // 通过静态内部类访问单例对象 } } ``` **解析**： - **静态内部类**：这种方式利用了 Java 类加载机制来确保单例模式的实现，只有当首次调用 `getInstance()` 方法时才会加载静态内部类并初始化单例对象。 - **...

    单例模式与垃圾回收机制

    这是因为单例对象通常通过静态成员变量持有引用，而静态成员变量作为方法区的一部分，不会因普通对象的回收而被清除。具体来说，根据根搜索算法，只要静态变量还持有对单例对象的引用，那么该对象就仍然被认为是可达...

    JAVA单例模式的几种实现方法

    // 静态工厂方法，提供外部获取单例对象的唯一入口 public static Singleton1 getInstance() { return single; } } ``` **特点**： - **安全性高**：由于在类加载时就已完成实例化，因此不需要担心多线程环境下...

    Java中的静态变量静态方法静态块与静态类.docx

    在一个静态方法中，除了局部变量外，能够访问的外部变量也必须是静态的，能够访问的外部方法也必须是静态的，实例变量和实例方法均不能访问。 静态方法通常是 public 的，作为工具类的工具方法出现。 例如： ```...

    设计模式之单例模式（结合工厂模式）

    单例对象的创建可以在静态初始化块中完成，或者在getInstance方法中通过DCL模式实现。 在项目中，`src`目录可能包含了这些设计模式的源码示例，可以用来学习和理解如何实际应用单例模式和工厂模式。通过阅读和分析...

    Java中的五种实现方法【单例模式】

    在Java编程语言中，单例模式是一种常用的软件设计模式，它的主要目的是确保一个类只有一个实例，并提供一个全局访问点。这种模式在系统中需要频繁创建和销毁对象时，或者对象的创建过程比较昂贵时，特别有用。单例...

    php面对对象中static静态属性和静态方法的调用_.docx

    而当尝试在静态方法 `tell()` 中访问非静态属性 `$height` 时，会抛出错误，因为静态方法没有实例上下文，无法确定 `$this` 对应哪个实例。 总结一下 PHP 中 `static` 的关键点： 1. 静态属性可以在类的任何实例...

    OC单例模式讲解

    4. **提供获取实例的方法**：通常会提供一个静态方法或类方法来获取单例对象，这个方法会检查是否已经存在实例，如果不存在则创建一个新的实例并返回；如果已经存在，则直接返回已存在的实例。 5. **懒加载**：即在...

    java单例设计模式 4中实现方式，重点介绍了静态内部类的实现方式

    具体来说它将单例对象的创建延迟到静态内部类被加载时才执行，从而避免了多线程环境下的同步问题。下面是一个简单的示例代码： ```java public class SingletonDemo { private static Map, String&gt; idCodeMap = ...

    php单例模式实例

    3. 防止克隆：为了避免通过`clone`关键字复制单例对象，我们还需要封锁`__clone()`魔术方法。 ```php class Singleton { // ... private function __clone() {} } ``` 4. 防止序列化和反序列化：如果允许对象被...

    使用单例模式实现计数器

    在C#中，我们可以利用单例模式来创建一个计数器类，以确保在整个应用程序的生命周期内，计数器只存在一个实例，并且能够被多个对象安全地共享和访问。 首先，我们需要理解单例模式的基本原理。单例模式的关键在于...

    场景管理单例模式1

    场景管理单例模式1 单例模式（Singleton Pattern）是一种常用的设计...在 Unity3D 中，单例模式可以用来管理场景，提供了一个全局访问点来访问单例对象。这种模式可以提高性能，简化代码，并且可以确保只有一个实例。

    生成静态的方法

    总结来说，"静态"关键字在编程中提供了许多有用的特性，如简化代码、优化资源使用以及实现特定设计模式。理解并恰当运用静态方法、变量和类，是编写高效、可维护的代码的关键。然而，过度使用静态元素可能会导致代码...

    java:单例模式 作为对象的创建模式

    3. **全局访问点**：类提供一个全局的访问点，使得任何需要使用该类实例的地方，都可以通过这个公共的静态方法获取到唯一实例。 在Java中，常见的单例实现方式有两种：饿汉式（Eager Initialization）和懒汉式...

Magicbox
Global site tag (gtag.js) - Google Analytics