106 lines
2.8 KiB
Java
106 lines
2.8 KiB
Java
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package com.example.struts2;
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import com.opensymphony.xwork2.ActionSupport;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 用户管理 Action - CRUD 示例
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*
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* 学习点：
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* - Session 范围数据
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* - 多个处理方法
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* - 动态方法调用
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*/
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public class UserFormAction extends ActionSupport {
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private static List<User> users = new ArrayList<>();
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private static Long idCounter = 1L;
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private User user = new User();
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private Long id;
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private List<User> userList;
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static {
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users.add(new User(idCounter++, "张三", "zhangsan@example.com", 25));
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users.add(new User(idCounter++, "李四", "lisi@example.com", 30));
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users.add(new User(idCounter++, "王五", "wangwu@example.com", 28));
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}
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// 列表
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public String list() {
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userList = new ArrayList<>(users);
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return SUCCESS;
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}
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// 添加
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public String add() {
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user.setId(idCounter++);
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users.add(user);
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return SUCCESS;
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}
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// 编辑页面
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public String edit() {
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for (User u : users) {
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if (u.getId().equals(id)) {
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user = u;
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break;
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}
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}
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return SUCCESS;
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}
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// 更新
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public String update() {
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for (int i = 0; i < users.size(); i++) {
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if (users.get(i).getId().equals(user.getId())) {
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users.set(i, user);
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break;
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}
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}
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return SUCCESS;
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}
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// 删除
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public String delete() {
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users.removeIf(u -> u.getId().equals(id));
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return SUCCESS;
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}
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// Getters and Setters
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public User getUser() { return user; }
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public void setUser(User user) { this.user = user; }
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public Long getId() { return id; }
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public void setId(Long id) { this.id = id; }
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public List<User> getUserList() { return userList; }
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public void setUserList(List<User> userList) { this.userList = userList; }
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// 内部类 - 用户实体
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public static class User {
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private Long id;
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private String name;
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private String email;
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private Integer age;
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public User() {}
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public User(Long id, String name, String email, Integer age) {
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this.id = id;
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this.name = name;
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this.email = email;
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this.age = age;
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}
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public Long getId() { return id; }
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public void setId(Long id) { this.id = id; }
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public String getName() { return name; }
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public void setName(String name) { this.name = name; }
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public String getEmail() { return email; }
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public void setEmail(String email) { this.email = email; }
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public Integer getAge() { return age; }
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public void setAge(Integer age) { this.age = age; }
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}
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}
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