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继承ApplicationContextAware获取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;@Configurationpublic class SpringContextUtil implements ApplicationContextAware { private static ApplicationContext applicationContext; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { SpringContextUtil.applicationContext = applicationContext; } public static Object getBean(String name) throws BeansException{ return applicationContext.getBean(name); }}
这样创造一个工具类即可获取Spring Boot管理的各种Bean。
比如下面这个Service接口:
实现如下:
Controller如下:
这里获取了tableName后,解析tableName的字符串,然后通过反射直接调用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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