public class Company { private String name; private Employee managingDirector;
public String getName() { return this.name; } public void setName(String name) { this.name = name; } public Employee getManagingDirector() { return this.managingDirector; } public void setManagingDirector(Employee managingDirector) { this.managingDirector = managingDirector; } }
public class Employee { private float salary;
public float getSalary() { return salary; } public void setSalary(float salary) { this.salary = salary; } } 然后我們使用BeanWrapper來調用這兩個bean：
Company c = new Company(); BeanWrapper bwComp = BeanWrapperImpl(c); // setting the company name... bwComp.setPropertyValue("name", "Some Company Inc."); // ... can also be done like this: PropertyValue v = new PropertyValue("name", "Some Company Inc."); bwComp.setPropertyValue(v);
// ok, let's create the director and tie it to the company: Employee jim = new Employee(); BeanWrapper bwJim = BeanWrapperImpl(jim); bwJim.setPropertyValue("name", "Jim Stravinsky"); bwComp.setPropertyValue("managingDirector", jim);
// retrieving the salary of the managingDirector through the company Float salary = (Float)bwComp.getPropertyValue("managingDirector.salary"); 看起來麻煩了許多，但是這樣spring就可以使用統一的方式來治理bean的屬性了。 Bean的制造工廠
