隨筆檔案(496)

package ch8;
import java.util.Date;
//團隊類
public class Team {
//團隊名稱
private String teamname;
//定義團隊人員屬性
private Person person;
//團隊人數
private int personnum;
//屬性的getter和setter方法
public String getTeamname() {
return teamname;
}
public void setTeamname(String teamname) {
this.teamname = teamname;
}
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}
public int getPersonnum() {
return personnum;
}
public void setPersonnum(int personnum) {
this.personnum = personnum;
}
}
//定義人員類
class Person {
//姓名
private String name;
//年齡
private int age;
//人員出生日期
private Date birthday;
//屬性的getter和setter方法
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}

package ch8;
import java.util.HashMap;
import java.util.Map;
import ognl.Ognl;
import ognl.OgnlException;
public class TestOGNL {
public static void main(String[] args) {
//定義一個Map對象
Map m = new HashMap();
//定義一個Team對象
Team team1 = new Team();
team1.setTeamname("團隊1");
//定義一個Person對象
Person person1 = new Person();
person1.setName("pla1");
//添加team元素
team1.setPerson(person1);
//定義一個Team對象
Team team2 = new Team();
team2.setTeamname("團隊2");
//定義一個Person對象
Person person2 = new Person();
person2.setName("pla2");
//添加team元素
team2.setPerson(person2);

//添加Map元素
m.put("team1", team1);
m.put("team2", team2);
try {
System.out.println(Ognl.getValue("team1.teamname", m));
System.out.println(Ognl.getValue("team2.person.name", m));
System.out.println(Ognl.getValue("teamname", team2));
System.out.println(Ognl.getValue("person.name", team2));
} catch (OgnlException e) {
}
}
}

??

圖8.1嵌套屬性示意圖

團隊1
pla2
團隊2
pla2