使用spring注解时@Service注解，在注入时为null的问题

注解时@Service注解，在注入时为null的问题"/>

使用spring注解时@Service注解，在注入时为null的问题

1、上工具类（使用上下文）

@Slf4j
@Component
public class SpringUtil implements ApplicationContextAware {private static ApplicationContext applicationContext;// 获取applicationContextpublic static ApplicationContext getApplicationContext() {return applicationContext;}@Overridepublic void setApplicationContext(ApplicationContext applicationContext) throws BeansException {if (SpringUtil.applicationContext == null) {SpringUtil.applicationContext = applicationContext;}log.debug("获取ApplicationContext");}// 通过name获取Beanpublic static Object getBean(String name) {return getApplicationContext().getBean(name);}// 通过class获取Beanpublic static <T> T getBean(Class<T> clazz) {return getApplicationContext().getBean(clazz);}// 通过name,以及Clazz返回指定的Beanpublic static <T> T getBean(String name, Class<T> clazz) {return getApplicationContext().getBean(name, clazz);}}

2、使用方法

 private WorkSignBusinessService initWorkFlowBusinessService(String tableName) {WorkSignBusinessService workSignBusinessService = null;switch (tableName) {case "t_agent_info":workSignBusinessService = workSignBusinessServiceAgentInfo == null ? SpringUtil.getBean(WorkSignBusinessServiceAgentInfo.class) : workSignBusinessServiceAgentInfo;break;case "t_applicant_info":workSignBusinessService = workSignBusinessServiceApplicantInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceApplicantInfo.class) : workSignBusinessServiceApplicantInfo;break;case "t_case_handle":workSignBusinessService = workSignBusinessServiceCaseHandle== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseHandle.class) : workSignBusinessServiceCaseHandle;break;case "t_case_handle_record":workSignBusinessService = workSignBusinessServiceCaseHandleRecord== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseHandleRecord.class) : workSignBusinessServiceCaseHandleRecord;break;case "t_case_handle_user":workSignBusinessService = workSignBusinessServiceCaseHandleUser== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseHandleUser.class) : workSignBusinessServiceCaseHandleUser;break;case "t_case_info":workSignBusinessService = workSignBusinessServiceCaseInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseInfo.class) : workSignBusinessServiceCaseInfo;break;case "t_case_modify_record":workSignBusinessService = workSignBusinessServiceCaseModifyRecord== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseModifyRecord.class) : workSignBusinessServiceCaseModifyRecord;break;case "t_case_threerule":workSignBusinessService = workSignBusinessServiceCaseThreeRule== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseThreeRule.class) : workSignBusinessServiceCaseThreeRule;break;case "t_case_work_extend":workSignBusinessService = workSignBusinessServiceCaseWorkExtend== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseWorkExtend.class) : workSignBusinessServiceCaseWorkExtend;break;case "t_case_work_rl":workSignBusinessService = workSignBusinessServiceCaseWorkRl== null ? SpringUtil.getBean(WorkSignBusinessServiceCaseWorkRl.class) : workSignBusinessServiceCaseWorkRl;break;case "t_deliver_receiver":workSignBusinessService = workSignBusinessServiceDeliverReceiver== null ? SpringUtil.getBean(WorkSignBusinessServiceDeliverReceiver.class) : workSignBusinessServiceDeliverReceiver;break;case "t_handle_user_record":workSignBusinessService = workSignBusinessServiceHandleUserRecord== null ? SpringUtil.getBean(WorkSignBusinessServiceHandleUserRecord.class) : workSignBusinessServiceHandleUserRecord;break;case "t_overview_back_record":workSignBusinessService = workSignBusinessServiceOverViewBackRecord== null ? SpringUtil.getBean(WorkSignBusinessServiceOverViewBackRecord.class) : workSignBusinessServiceOverViewBackRecord;break;case "t_proxy_info":workSignBusinessService = workSignBusinessServiceProxyInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceProxyInfo.class) : workSignBusinessServiceProxyInfo;break;case "t_respondent_info":workSignBusinessService = workSignBusinessServiceRespondentInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceRespondentInfo.class) : workSignBusinessServiceRespondentInfo;break;case "t_sms_record":workSignBusinessService = workSignBusinessServiceSmsRecord== null ? SpringUtil.getBean(WorkSignBusinessServiceSmsRecord.class) : workSignBusinessServiceSmsRecord;break;case "t_sys_config":workSignBusinessService = workSignBusinessServiceSysConfig== null ? SpringUtil.getBean(WorkSignBusinessServiceSysConfig.class) : workSignBusinessServiceSysConfig;break;case "t_third_person_info":workSignBusinessService = workSignBusinessServiceThirdPersonInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceThirdPersonInfo.class) : workSignBusinessServiceThirdPersonInfo;break;case "t_ws_result":workSignBusinessService = workSignBusinessServiceWsResult== null ? SpringUtil.getBean(WorkSignBusinessServiceWsResult.class) : workSignBusinessServiceWsResult;break;case "t_ws_temp":workSignBusinessService = workSignBusinessServiceWsTemp== null ? SpringUtil.getBean(WorkSignBusinessServiceWsTemp.class) : workSignBusinessServiceWsTemp;break;case "t_uap_app":workSignBusinessService = workSignBusinessServiceUapApp== null ? SpringUtil.getBean(WorkSignBusinessServiceUapApp.class) : workSignBusinessServiceUapApp;break;case "t_uap_group":workSignBusinessService = workSignBusinessServiceUapGroup== null ? SpringUtil.getBean(WorkSignBusinessServiceUapGroup.class) : workSignBusinessServiceUapGroup;break;case "t_uap_user":workSignBusinessService = workSignBusinessServiceUapUser== null ? SpringUtil.getBean(WorkSignBusinessServiceUapUser.class) : workSignBusinessServiceUapUser;break;case "t_entrusting_depart":workSignBusinessService = workSignBusinessServiceEntrustingDepart== null ? SpringUtil.getBean(WorkSignBusinessServiceEntrustingDepart.class) : workSignBusinessServiceEntrustingDepart;break;case "t_wssq_applicant_info":workSignBusinessService = workSignBusinessServiceWssqApplicantInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceWssqApplicantInfo.class) : workSignBusinessServiceWssqApplicantInfo;break;case "t_wssq_evidence":workSignBusinessService = workSignBusinessServiceWssqEvidence== null ? SpringUtil.getBean(WorkSignBusinessServiceWssqEvidence.class) : workSignBusinessServiceWssqEvidence;break;case "t_wssq_inquire":workSignBusinessService = workSignBusinessServiceWssqInquire== null ? SpringUtil.getBean(WorkSignBusinessServiceWssqInquire.class) : workSignBusinessServiceWssqInquire;break;case "t_wssq_login":workSignBusinessService = workSignBusinessServiceWssqLogin== null ? SpringUtil.getBean(WorkSignBusinessServiceWssqLogin.class) : workSignBusinessServiceWssqLogin;break;case "t_wssq_overt":workSignBusinessService = workSignBusinessServiceWssqOvert== null ? SpringUtil.getBean(WorkSignBusinessServiceWssqOvert.class) : workSignBusinessServiceWssqOvert;break;case "t_wssq_respondent_info":workSignBusinessService = workSignBusinessServiceWssqRespondentInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceWssqRespondentInfo.class) : workSignBusinessServiceWssqRespondentInfo;break;case "t_person_info":workSignBusinessService = workSignBusinessServicePersonInfo== null ? SpringUtil.getBean(WorkSignBusinessServicePersonInfo.class) : workSignBusinessServicePersonInfo;break;case "xssht_respondent_info":workSignBusinessService = workSignBusinessServiceXsshRespondentInfo== null ? SpringUtil.getBean(WorkSignBusinessServiceXsshRespondentInfo.class) : workSignBusinessServiceXsshRespondentInfo;break;case "ed_user":workSignBusinessService = workSignBusinessServiceEdUser== null ? SpringUtil.getBean(WorkSignBusinessServiceEdUser.class) : workSignBusinessServiceEdUser;break;}return workSignBusinessService;}