来看Java小例子:依据Map对象的内容创立JavaBean - 仓酷云

01.importjava.beans.BeanInfo;
02.importjava.beans.IntrospectionException;
03.importjava.beans.Introspector;
04.importjava.beans.PropertyDescriptor;
05.importjava.util.HashMap;
06.importjava.util.Map;
07.importjava.lang.reflect.InvocationTargetException;
08.
09.publicclassMapToBean{
10.
11.publicstaticvoidmain(String[]args)throwsException{
12.Map<Object,Object>map=newHashMap<Object,
Object>();
13.map.put("name","张三");
14.map.put("age",30);
15.Personp=convertMap(Person.class,map);
16.System.out.println(p.getName()+","+p.getAge
());
17.}
18.
19./**
20.*将一个Map对象转化为一个JavaBean
21.*
22.*@paramtype要转化的范例
23.*@parammap包括属性值的map
24.*
25.*@return转化出来的JavaBean对象
26.*
27.*@throwsIntrospectionException假如剖析类属性失利
28.*@throwsIllegalAccessException假如实例化JavaBean失利
29.*@throwsInstantiationException假如实例化JavaBean失利
30.*@throwsInvocationTargetException假如挪用属性的setter办法
失利
31.*/
32.privatestatic<T>TconvertMap(Class<T>type,
Map<Object,Object>map)
33.throwsIntrospectionException,IllegalAccessException,
34.InstantiationException,InvocationTargetException{
35.BeanInfobeanInfo=Introspector.getBeanInfo(type);//猎取
类属性
36.Tt=type.newInstance();//创立JavaBean对象
37.
38.//给JavaBean对象的属性赋值
39.for(PropertyDescriptordescriptor:
beanInfo.getPropertyDescriptors()){
40.StringpropertyName=descriptor.getName();
41.if(map.containsKey(propertyName)){
42.//上面一句能够try起来，如许当一个属性赋值失利的
时分就不会影响其他属性赋值。
43.descriptor.getWriteMethod().invoke(t,map.get
(propertyName));
44.}
45.}
46.returnt;
47.}
48.}
49.
50.classPerson{
51.
52.privateStringname;
53.
54.privateintage;
55.
56.publicStringgetName(){
57.returnname;
58.}
59.
60.publicvoidsetName(Stringname){
61.this.name=name;
62.}
63.
64.publicintgetAge(){
65.returnage;
66.}
67.
68.publicvoidsetAge(intage){
69.this.age=age;
70.}
71.}

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