繼承ApplicationContextAware獲取ApplicationContext：

package com.xxxx.xxxx.bean;import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.context.annotation.Configuration;@Configuration public class SpringContextUtil implements ApplicationContextAware {private static ApplicationContext applicationContext;@Overridepublic void setApplicationContext(ApplicationContext applicationContext) throws BeansException {SpringContextUtil.applicationContext = applicationContext;}public static Object getBean(String name) throws BeansException{return applicationContext.getBean(name);} }

這樣創造一個工具類即可獲取Spring Boot管理的各種Bean。

比如下面這個Service接口：

實現如下：

Controller如下：

這里獲取了tableName后，解析tableName的字符串，然后通過反射直接調用service。

EntityAnalys.java如下：

package com.xxxx.xxxx.utils;import com.xxxx.xxxx.bean.SpringContextUtil;import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method;public class EntityAnalyse {public static Object getAllObject(String tableName, String methodName) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {String tName = tableName + "ServiceImpl";Class cls = SpringContextUtil.getBean(tName).getClass();Method m = cls.getDeclaredMethod(methodName);Object invoke = m.invoke(SpringContextUtil.getBean(tName));return invoke;}public static Object getOneObjectByID(String tableName, String methodName, String id) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {String tName = tableName + "ServiceImpl";Class cls = SpringContextUtil.getBean(tName).getClass();Method m = cls.getDeclaredMethod(methodName, String.class);Object invoke = m.invoke(SpringContextUtil.getBean(tName), id);return invoke;} }

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