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SpringBoot如何實(shí)現(xiàn)調(diào)用controller和Service層方法

更新時(shí)間：2025年03月08日 14:04:48 作者：北極的企鵝88

文章介紹了在SpringBoot中如何在工具類中調(diào)用Controller和Service層的方法,通過(guò)創(chuàng)建一個(gè)工具類SpringUtil,并在Spring?Boot啟動(dòng)類中進(jìn)行配置掃描注入,工具類就可以訪問(wèn)Controller和Service層的方法

SpringBoot調(diào)用controller和Service層方法

說(shuō)明

最近遇到一個(gè)問(wèn)題,如何在工具類中去訪問(wèn)controller層與service層的方法。
因?yàn)槠綍r(shí)在調(diào)用service層時(shí)都是在controller中，有配置掃描注入，spring會(huì)根據(jù)配置自動(dòng)注入所依賴的服務(wù)層。
但因我們寫的工具類不屬于controller層，所以當(dāng)所寫接口需要調(diào)用服務(wù)層是，常常會(huì)為NULL。

實(shí)現(xiàn)

1.創(chuàng)建一個(gè)工具類：SpringUtil

package com.ruoyi.web.controller.employment.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public 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(guò)name獲取 Bean.
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    //通過(guò)class獲取Bean.
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    //通過(guò)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);
    }
}

2.SpringBoot啟動(dòng)類調(diào)用controller和service方法

package com.ruoyi;

import com.ruoyi.web.controller.employment.ProvportController1;
import com.ruoyi.web.controller.employment.ProvportController2;
import com.ruoyi.web.controller.employment.utils.SpringUtil;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.ApplicationContext;

/**
 * 啟動(dòng)程序
 * 
 * @author ruoyi
 */
@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class })
public class RuoYiApplication
{
	//注入service
    private static TestService testService;
    //注入controller
    private static TestController testController;

    public static void main(String[] args) throws InterruptedException {
        SpringApplication.run(RuoYiApplication.class, args);
        ApplicationContext context = SpringUtil.getApplicationContext();
        testService= context.getBean(testService.class);
        testController= context.getBean(testController.class);
        //調(diào)用service方法
        testService.getService(); 
		//調(diào)用controller方法
        testController.getController();              
    }
}