spring postconstruct

package com.jdw.service.impl;

import java.util.List;

import javax.annotation.PostConstruct;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Service;

import com.jdw.bean.User;

import com.jdw.dao.UserMapper;

import com.jdw.service.UserService;

@Service("userService")

public class UserServiceImpl implements UserService {

	@Autowired

	// 注入

	private UserMapper userMapper;

	private List<User> users = null;

	public UserServiceImpl() {

		super();

	}

	@PostConstruct

	private void init() {

		System.out.println("start init..");

		users = userMapper.selectList();

		System.out.println("已经初始化users...");

	}

	@Override

	public List<User> getUsers() {

		// TODO Auto-generated method stub

		return users;

	}

}

如果spring容器初始化之后，如果需要加载数据，可以这么做。。。