struts2集合示例

package com.web; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import com.domain.Person; public class Login extends BasicAction { private String username; private List<Person> list; private Set<Person> set; private Map<String, Person> map; public Map<String, Person> getMap() { return map; } public void setMap(Map<String, Person> map) { this.map = map; } public List<Person> getList() { return list; } public void setList(List<Person> list) { this.list = list; } public Set<Person> getSet() { return set; } public void setSet(Set<Person> set) { this.set = set; } public String test() { // 声明List对象 List<Person> li = new ArrayList<Person>(); // 声明Person对象 Person p1 = new Person(); p1.setName("First"); Person p2 = new Person(); p2.setName("Second"); // 将Person对象依次添加到List中 li.add(p1); li.add(p2); // 设置List的属性的值为其实例对象 setList(li); return redine("welcome"); } public String loginError() { if (!this.username.equals("dragon")) { Set<Person> s = new HashSet<Person>(); Person p1 = new Person(); p1.setName("It is the First"); Person p2 = new Person(); p2.setName("It is the Second"); s.add(p1); s.add(p2); setSet(s); return redine("error"); } else { Map<String, Person> m = new HashMap<String, Person>(); Person ps1 = new Person(); ps1.setId(1); ps1.setName("Map,First!"); Person ps2 = new Person(); ps2.setName("Map,Second!"); ps2.setId(2); String p1 = ps1.getId().toString(); String p2 = ps2.getId().toString(); m.put(p1, ps1); m.put(p2, ps2); setMap(m); return redine("welcome"); } } private static final long serialVersionUID = 1L; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } }