CommonUtils中的工具UUID和ToBean

1.UUID

1.静态方法uuid() 随机生成由数字和字符组成的32位字符串

2.依赖的jar包：commons-beanutils.jar 、commons-logging.jar

String str=CommonUtils.uuid();

2.toBean

1.tobean能用map集合对bean进行赋值

2.其中map的键为bean的属性名称(成员变量)。Map中的值(value)为bean属性中的值

class Person{
private String name;
private String age;
private String sex;
//所有属性的 set() //get()方法
}


class TestCommonUtils{
@Test
public void testToBean(){
Map map=new HashMap();
map.put("name","张三");
map.put("age","18");
map.put("sex","男");
CommonUtils.toBean(map,Person.class);
System.out.println(p);
输出的结果为：张三，18，男
}
}
当Map中没有Bean的属性时候，Bean的属性为null如下：
@Test
public void testToBean(){
Map map=new HashMap();
map.put("name","张三");
map.put("age","18");

CommonUtils.toBean(map,Person.class);
System.out.println(p);
输出的结果为：张三，18，null
}
map能为多个Bean进行赋值，
class Student{
private String sid;
private String height;
private String weight;
//所有属性的 set() //get()方法
}

@Test
public void testToBean(){
Map map=new HashMap();
//为Person的属性赋值
map.put("name","张三");
map.put("age","18");

//为Student赋值
map.put("sid","123456");
map.put("height","180");
map.put("weight","130");
CommonUtils.toBean(map,Person.class);
System.out.println("person="+p);
System.out.println("Student="+Student)
输出的结果为：person=张三，18，null
Student=123456,180,130；
}