Struts2中Action-代码抽取

迷南。 2022-06-16 14:43 200阅读 0赞

代码：

基类：
    package com.dx.action;
    
    import java.lang.reflect.ParameterizedType;
    import java.util.Map;
    
    import org.apache.struts2.interceptor.ApplicationAware;
    import org.apache.struts2.interceptor.RequestAware;
    import org.apache.struts2.interceptor.SessionAware;
    
    import com.opensymphony.xwork2.ActionSupport;
    import com.opensymphony.xwork2.ModelDriven;
    
    @SuppressWarnings("unchecked")
    public class BaseAction<T> extends ActionSupport implements ModelDriven<T>,
    RequestAware,SessionAware,ApplicationAware{
    
        private static final long serialVersionUID = 1L;
        protected Map<String,Object> req;
        protected Map<String,Object> session;
        protected Map<String,Object> app;
        protected T model;
    
    
    
        @Override
        public T getModel() {
            return model;
        }
    
        @SuppressWarnings("rawtypes")
        public BaseAction(){
            ParameterizedType type = (ParameterizedType)this.getClass().getGenericSuperclass();
            Class clazz = (Class)type.getActualTypeArguments()[0];
            try {
                model = (T)clazz.newInstance();
            }catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        @Override
        public void setApplication(Map<String, Object> app) {
            this.app = app;
        }
    
        @Override
        public void setSession(Map<String, Object> session) {
            this.session = session;
        }
    
        @Override
        public void setRequest(Map<String, Object> req) {
            this.req = req;
        }
    }
    子类：
    package com.dx.action;
    
    import java.util.List;
    
    import com.dx.pojo.User;
    import com.dx.service.UserService;
    
    public class UserAction extends BaseAction<User>{
    
        private static final long serialVersionUID = 1L;
        private UserService userService;
    
        public void setUserService(UserService userService) {
            this.userService = userService;
        }
        //添加用户
        public String addUser(){
            userService.save(model);
            return "success";
        }
    
        //删除
        public String delete(){
            int uid = model.getUid();
            userService.delete(uid);
            List<User> l = userService.queryAll();
            req.put("users", l);
            return "list";
        }
    
        //跳转更新页面
        public String update(){
            int uid = model.getUid();
            User user = userService.fetch(uid);
            req.put("user", user);
            return "update";
        }
    
        //更新用户
        public String updateUser(){
            userService.update(model);
            List<User> l = userService.queryAll();
            req.put("users", l);
            return "list";
        }
    
        //查询所有用户
        public String queryUser(){
            List<User> l = userService.queryAll();
            req.put("users", l);
            return "list";
        }
    
        //根据姓名查询
        public String queryByName(){
            String uname = model.getUname();
            List<User> l;
            if(uname != null && uname.length() != 0){
                l = userService.queryByName(uname);
            }else{
                l = userService.queryAll();
            }
            req.put("users", l);
            return "list";
        }
    
    }

spring配置：