java实现Object和Map之间的转换3种方式

2024-02-17 19:46:03 154

publicstaticObjectmapToObject(Mapmap,ClassbeanClass) throwsException{ if(map==null) returnnull; Objectobj=beanClass.newInstance(); org.apache.commons.beanutils.BeanUtils.populate(obj,map); returnobj; } publicstaticMapobjectToMap(Objectobj){ if(obj==null){ returnnull; } returnneworg.apache.commons.beanutils.BeanMap(obj); }

publicMapObj2Map(Objectobj)throwsException{ Mapmap=newHashMap(); Field[]fields=obj.getClass().getDeclaredFields(); for(Fieldfield:fields){ field.setAccessible(true); map.put(field.getName(),field.get(obj)); } returnmap; } publicObjectmap2Obj(Mapmap,Classclz)throwsException{ Objectobj=clz.newInstance(); Field[]declaredFields=obj.getClass().getDeclaredFields(); for(Fieldfield:declaredFields){ intmod=field.getModifiers(); if(Modifier.isStatic(mod)||Modifier.isFinal(mod)){ continue; } field.setAccessible(true); field.set(obj,map.get(field.getName())); } returnobj; }

publicMapobj2Map(Objectobj)throwsException{ Mapmap=newHashMap(); BeanInfobeanInfo=Introspector.getBeanInfo(obj.getClass()); PropertyDescriptor[]propertyDescriptors=beanInfo.getPropertyDescriptors(); for(PropertyDescriptorproperty:propertyDescriptors){ Stringkey=property.getName(); if(key.compareToIgnoreCase("class")==0){ continue; } Methodgetter=property.getReadMethod(); Objectvalue=getter!=null?getter.invoke(obj):null; map.put(key,value); } returnmap; } publicObjectmap2Obj(Mapmap,Classclz)throwsException{ if(map==null) returnnull; Objectobj=clz.newInstance(); BeanInfobeanInfo=Introspector.getBeanInfo(obj.getClass()); PropertyDescriptor[]propertyDescriptors=beanInfo.getPropertyDescriptors(); for(PropertyDescriptorproperty:propertyDescriptors){ Methodsetter=property.getWriteMethod(); if(setter!=null){ setter.invoke(obj,map.get(property.getName())); } } returnobj; }

java实现Object和Map之间的转换3种方式

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