springboot中ApplicationContextAware獲取上下文

package com.system.yunjie.cms.ms.member;

import com.system.yunjie.cms.common.common.interceptor.ParamInterceptor;
import com.system.yunjie.cms.common.common.interceptor.InterceptorConfig;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

public class SpringUtils implements ApplicationContextAware {
    private static ApplicationContext applicationContext = null;

    public SpringUtils() {
    }

    public void setApplicationContext(ApplicationContext arg0) throws BeansException {
        if (applicationContext == null) {
            applicationContext = arg0;
        }

    }

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    public static void setAppCtx(ApplicationContext webAppCtx) {
        if (webAppCtx != null) {
            applicationContext = webAppCtx;
        }
    }

    /**
     * 拿到ApplicationContext對象實例後就能夠手動獲取Bean的注入實例對象
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    public static <T> T getBean(String name, Class<T> clazz) throws ClassNotFoundException {
        return getApplicationContext().getBean(name, clazz);
    }

    public static final Object getBean(String beanName) {
        return getApplicationContext().getBean(beanName);
    }

    public static final Object getBean(String beanName, String className) throws ClassNotFoundException {
        Class clz = Class.forName(className);
        return getApplicationContext().getBean(beanName, clz.getClass());
    }

    public static boolean containsBean(String name) {
        return getApplicationContext().containsBean(name);
    }

    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
        return getApplicationContext().isSingleton(name);
    }

    public static Class<?> getType(String name) throws NoSuchBeanDefinitionException {
        return getApplicationContext().getType(name);
    }

    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
        return getApplicationContext().getAliases(name);
    }

    public static void main(String[] args) {
        /**
         * springboot普通類獲取spring容器中的bean
         *
         *User UserDao UserImpl,其中UserImpl中有一個獲取User列表的方法getUserList
         * 測試方法：
         * 測試在springboot中根據UserImpl的Class對象調用getUserList方法獲取用戶列表數據
         */
//        ParamInterceptor paramInterceptor1 = SpringUtils.getBean(ParamInterceptor.class);
//        System.out.println("------------------------" + paramInterceptor1);
//        ParamInterceptor paramInterceptor2 = SpringUtils.getBean(InterceptorConfig.class).getParamInterceptor();
//        System.out.println("------------------------" + paramInterceptor2);

//        Map param = new HashMap<String,Object>();
//        param.put("name","Tom");
//        List<User> listUser=SpringUtil.getBean(UserImpl.class).getClass()
//                .getDeclaredMethod("getUserList", Map.class)
//                .invoke(UserImpl.class,param);
    }複製代碼

package com.system.yunjie.cms.ms.member;

import com.system.yunjie.cms.common.common.config.annotation.EnableFeignService;
import com.system.yunjie.cms.common.common.config.annotation.EnableGlobalExceptionHandler;
import com.system.yunjie.cms.common.common.config.annotation.EnableOAuth2Service;
import com.system.yunjie.cms.common.common.config.annotation.EnableValidateOrg;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.cloud.client.SpringCloudApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringCloudApplication
@EnableOAuth2Service
@EnableFeignService
@EnableGlobalExceptionHandler
@EnableValidateOrg
@MapperScan(basePackages = "com.system.yunjie.cms.ms.member.dao")
public class MemberApplication {

    public static void main(String[] args) {
        SpringApplication.run(MemberApplication.class, args);
    }

    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }


    @Bean
    @LoadBalanced
    public RestTemplate balancedTemplate() {
        return new RestTemplate();
    }

    @Bean
    public SpringUtils springUtils() {
        return new SpringUtils();
    }

}
複製代碼

package com.system.yunjie.cms.ms.member.controller;

import com.system.yunjie.cms.common.common.interceptor.InterceptorConfig;
import com.system.yunjie.cms.common.common.interceptor.ParamInterceptor;
import com.system.yunjie.cms.ms.member.SpringUtils;
import com.system.yunjie.cms.ms.member.service.MemberCsvImportService;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import static org.springframework.http.ResponseEntity.ok;

@RestController
@RequestMapping("/memberCsvImport")
@PreAuthorize("hasAuthority('ROLE_MEMBER')")
public class MemberCsvImportController {

    MemberCsvImportService memberCsvImportService;

    @Autowired
    public MemberCsvImportController(MemberCsvImportService memberCsvImportService) {
        this.memberCsvImportService = memberCsvImportService;
    }

    @Autowired
    SpringUtils springUtils;

    @GetMapping("/test")
    public ResponseEntity test(){

        ParamInterceptor paramInterceptor2 = springUtils.getBean(InterceptorConfig.class).getParamInterceptor();
        System.out.println("------------------------" + paramInterceptor2);

        ParamInterceptor paramInterceptor1 = springUtils.getBean(ParamInterceptor.class);
        System.out.println("------------------------" + paramInterceptor1);
        return ok().build();
    }


}
複製代碼