apache commons beanutils，如何設置屬性值？

Question

在java中，公共BeanUtils的，嘗試設置屬性「地址」和「creditCardList」來反對，但它給了我錯誤：

java.lang.NoSuchMethodException: Property 'address' has no setter method in class 'class com.dao.Student' 

，但我有這個方法存在。該代碼是在這裏：

public class Main { 
    public static void main(String[] args) { 
     Object student = new Student("John");  
     Object address = new Address("NJ"); 

     try { 
      PropertyUtils.setProperty(student, "address", address);   
      //---------- 
      List list = new ArrayList(); 
      Object creditCard = new CreditCard(); 
      list.add(creditCard); 

      PropertyUtils.setProperty(student, "creditCardList", list);   

     } catch (Exception e) {   
      e.printStackTrace(); 
     } 
    } 
} 

class Student { 
    private String name;   
    private Address address;  
    private List<CreditCard> creditCardList;  
    public Student(String name) { 
     super(); 
     this.name = name; 
    } 
    public String getName() { 
     return name; 
    } 
    public void setName(String name) { 
     this.name = name; 
    } 
    public Address getAddress() { 
     return address; 
    } 
    public void setAddress(Address address) { 
     this.address = address; 
    } 
    public List<CreditCard> getCreditCardList() { 
     return creditCardList; 
    } 
    public void setCreditCardList(List<CreditCard> creditCardList) { 
     this.creditCardList = creditCardList; 
    } 
} 

class Address { 
    private String name; 
    public Address(String name) { 
     super(); 
     this.name = name; 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 
} 

class CreditCard{ 
    private String cardName; 

    public String getCardName() { 
     return cardName; 
    } 

    public void setCardName(String cardName) { 
     this.cardName = cardName; 
    } 
} 

Answer 1

我搬到學生到自己的文件，並使其公開，也工作得很好:)

Answer 2

你的班級的學生應該是一個公共類，嘗試使公衆並重新運行代碼。