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關(guān)于SpringBoot獲取IOC容器中注入的Bean(推薦)

 更新時(shí)間:2018年05月15日 10:31:52   作者:noodles1994  
本文通過實(shí)例代碼給大家詳解了springboot獲取ioc容器中注入的bean問題,非常不錯(cuò),具有一定的參考借鑒價(jià)值,需要的朋友參考下吧

一: 注入一個(gè)TestUtils類

package com.shop.sell.Utils; 
import com.shop.sell.dto.CartDTO; 
import org.springframework.context.annotation.Bean; 
import org.springframework.context.annotation.Configuration; 
@Configuration 
public class TestUtils { 
  @Bean(name="testDemo") 
  public CartDTO said() { 
    CartDTO cartDTO = new CartDTO(); 
    cartDTO.setProductID(789); 
    cartDTO.setProductQuantity(10); 
    return cartDTO; 
  } 
} 

    二: 創(chuàng)建一個(gè)獲取bean的公共類

package com.shop.sell.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; 
  @Override 
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { 
    if(SpringUtil.applicationContext == null) { 
      SpringUtil.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); 
  } 
} 

三: 在控制器中獲取bean測試結(jié)果

package com.shop.sell.controller; 
import com.shop.sell.Utils.ResultVOUtil; 
import com.shop.sell.Utils.SpringUtil; 
import com.shop.sell.VO.ProductInfoVO; 
import com.shop.sell.VO.ProductVO; 
import com.shop.sell.VO.ResultVO; 
import com.shop.sell.dataobject.ProductCategory; 
import com.shop.sell.dataobject.ProductInfo; 
import com.shop.sell.dto.CartDTO; 
import com.shop.sell.from.OrderForm; 
import com.shop.sell.service.CategoryService; 
import com.shop.sell.service.ProductService; 
import org.springframework.beans.BeanUtils; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.context.ApplicationContext; 
import org.springframework.web.bind.annotation.GetMapping; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RestController; 
import java.util.ArrayList; 
import java.util.Arrays; 
import java.util.List; 
/** 
 * 買家商品 
 */ 
@RestController 
@RequestMapping("/buyer/product") 
public class BuyerProductController { 
  private static ApplicationContext applicationContext; 
  @Autowired 
  private ProductService productService; 
  @Autowired 
  private CategoryService categoryService; 
  @GetMapping(value = "/list") 
  public CartDTO list(){ 
    CartDTO cartDTO = (CartDTO) SpringUtil.getBean("testDemo"); 
    return cartDTO; 
  } 
} 

四: 使用postman測試結(jié)果

總結(jié)

以上所述是小編給大家介紹的關(guān)于SpringBoot獲取IOC容器中注入的Bean(推薦),希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時(shí)回復(fù)大家的。在此也非常感謝大家對腳本之家網(wǎng)站的支持!

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