Java开发网 - nested标签的用法及疑问

Topic: nested标签的用法及疑问

1.nested标签的用法及疑问

Posted by: realwangx
Posted on: 2005-03-29 11:34

nested，顾名思义，嵌套；
用法举例：
formBean定义：
public class PersonForm extends ActionForm {
Person person = new Person();

public void reset (ActionMapping mapping, HttpServletRequest request) {
 Address[] address = new Address[2];
 address[0]= new Address();
 address[1]= new Address();
person = new Person();
person.setAddress(address);
}

public Person getPerson() {
return this.person;
}

public void setPerson(Person person) {
this.person = person;
}
}

Person类：
public class Person {
private String lastName;
private String firstName;
private String age;
private Address address;
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getFirstName() {
return firstName;
}
public void setAge(String age) {
this.age = age;
}
public String getAge() {
return age;
}
public void setAddress(Address address){
this.address = address;
}
public Address getAddress(){
return address;
}

}
Address类：
public class Address {
private String street1;
private String street2;
public String getStreet1() {
return street1;
}
public void setStreet1(String street1) {
this.street1 = street1;
}
public void setStreet2(String street2) {
this.street2 = street2;
}
public String getStreet2() {
return street2;
}
}
在jsp中使用标签
<html:form action="/showPerson">
<nested:nest property="person">
Last Name: <nested:text property="lastName"/> 
First Name: <nested:text property="firstName"/> 
Age: <nested:text property="age"/> 
P>
<nested:iterate id="child" name="person" property="address" type="nestedtaglibs.Address">
Current nesting is: <nested:writeNesting/> 
Street 1: <nested:text name="child" property="street1"/> 
Street 2: <nested:text name="child" property="street2"/> 
</nested:iterate >
</nested:nest>
<html:submit/>
</html:form>
这样能够很好的解决，对于form的复杂定义，也能够使关系变得清晰明了。
但是有一个问题：
当Person和Address是一对多的关系时，不管我怎么尝试，都没有成功。（更改了好多次源码）