在springboot中使用main方法常規(guī)無法注入service，因?yàn)橐院笠部赡軙羞@種情況，所以采取工具類的方式進(jìn)行，該工具類為固定寫法，直接復(fù)制就行

@Componentpublic class SpringContextUtil implements ApplicationContextAware { private static ApplicationContext applicationContext = null; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {if (SpringContextUtil.applicationContext == null) { SpringContextUtil.applicationContext = applicationContext;} } public static ApplicationContext getApplicationContext() {return applicationContext; } public static Object getBean(String name) {return getApplicationContext().getBean(name); } public static <T> T getBean(Class<T> clazz) {return getApplicationContext().getBean(clazz); } public static <T> T getBean(String name, Class<T> clazz) {return getApplicationContext().getBean(name, clazz); } }

然后在需要注入的地方，創(chuàng)建靜態(tài)service

private static Service service;

然后在需要使用的main方法中：

public static void main(String[] args) {SpringApplication.run(**Application.class,args);ApplicationContext applicationContext = SpringContextUtil.getApplicationContext();service = applicationContext.getBean(**Service.class); }二、springboot 通過main方法調(diào)用service或dao

大多數(shù)情況下，我們使用springboot是創(chuàng)建一個(gè)web項(xiàng)目，然后通過接口訪問，但是也有特殊情況，比如線上跑著的web項(xiàng)目，有一些特殊的數(shù)據(jù)，需要經(jīng)過計(jì)算導(dǎo)入到數(shù)據(jù)庫，這個(gè)時(shí)候，我們可能需要原來的web項(xiàng)目中的一些service，dao才輔助操作，但是又不能在服務(wù)端新開接口。

我們通過springboot的main方法執(zhí)行這些操作。

此時(shí)，service和到需要通過上下文獲得。

創(chuàng)建類，并復(fù)制下面代碼

import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;import org.springframework.stereotype.Component;/** * 普通類調(diào)用Spring bean對象： * 注意：此類需要放到App.java同包或者子包下才能被掃描，否則失效。 */@Componentpublic class SpringUtil implements ApplicationContextAware{ private static ApplicationContext applicationContext = null; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {if(SpringUtil.applicationContext == null){ SpringUtil.applicationContext = applicationContext;} } //獲取applicationContext public static ApplicationContext getApplicationContext() {return applicationContext; } //通過name獲取 Bean. public static Object getBean(String name){return getApplicationContext().getBean(name); } //通過class獲取Bean. public static <T> T getBean(Class<T> clazz){return getApplicationContext().getBean(clazz); } //通過name,以及Clazz返回指定的Bean public static <T> T getBean(String name,Class<T> clazz){return getApplicationContext().getBean(name, clazz); }}

再創(chuàng)建TestApp方法，必須跟SpringUtilfa放到同一目錄下

package com.example.demo.test2;import com.example.demo.controller.Aqjg_thePeriodController;import com.example.demo.mapper.AppAqjgTaskMapper;import org.mybatis.spring.annotation.MapperScan;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.context.ApplicationContext;import java.util.List;import java.util.Map;@SpringBootApplication@MapperScan(basePackages = {'com.example.demo.mapper'})public class TestApp { public static void main(String[] args) {SpringApplication.run(TestApp.class, args);ApplicationContext context = SpringUtil.getApplicationContext();Aqjg_thePeriodController aqjg_thePeriodController = new Aqjg_thePeriodController();AppAqjgTaskMapper appAqjgTaskMapper = context.getBean(AppAqjgTaskMapper.class); //你的dao或serviceList<Map<String,Object>> list = appAqjgTaskMapper.getTestSmsData();System.out.println('完成'); }}

以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持好吧啦網(wǎng)。