import
javax.annotation.PostConstruct;
import
javax.annotation.PreDestroy;
import
java.util.HashMap;
import
java.util.List;
import
java.util.Map;
@Component
public
class
CodeCache {
public
static
Map<String, TownNameDto> codeMap =
new
HashMap<String, TownNameDto>
();
public
static
Map<String, CompanyModel> companyMap =
new
HashMap<String, CompanyModel>
();
@Autowired
private
CityDao cityDao;
@Autowired
private
CompanyDao companyDao;
@PostConstruct
public
void
init() {
//
系统启动中。。。加载codeMap
List<TownNameDto> codeList =
cityDao.selectCityNameAndCodeALL();
for
(TownNameDto code : codeList) {
codeMap.put(code.getTownCode()
+
code.getValue(), code);
List
<CompanyModel> companyModels =
companyDao.selectCompanies();
for
(CompanyModel company : companyModels) {
companyMap.put(company.getCode(), company);
@PreDestroy
public
void
destroy() {
//
系统运行结束
@Scheduled(cron = "0 0 0/2 * * ?"
)
public
void
testOne() {
//
每2小时执行一次缓存
init();
//从缓存中获取城市；
Map<String, TownNameDto> cityModelMap = CodeCache.codeMap;
Map<String, CompanyModel> companyModelMap = CodeCache.companyMap;
转自：https://blog.csdn.net/Alice_qixin/article/details/101547611
