一 . 手动从spring中获取bean对象，工具类

package com.meeno.wzq.util;import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;/*** @description: SpringBeanUtil* @author: Wzq* @create: 2019-10-08 16:24*/
@Component
public class SpringBeanUtil implements ApplicationContextAware {private static ApplicationContext applicationContext;@Overridepublic void setApplicationContext(ApplicationContext applicationContext) throws BeansException {if(SpringBeanUtil.applicationContext == null) {SpringBeanUtil.applicationContext = applicationContext;}System.out.println("---------------------------------------------------------------------");System.out.println("========ApplicationContext配置成功,在普通类可以通过调用SpringUtils.getAppContext()获取applicationContext对象,applicationContext="+SpringBeanUtil.applicationContext+"========");System.out.println("---------------------------------------------------------------------");}//获取applicationContextpublic static ApplicationContext getApplicationContext() {return applicationContext;}//通过name获取 Bean.public static Object getBean(String name){return getApplicationContext().getBean(name);}//通过class获取Bean.public static <T> T getBean(Class<T> clazz){return getApplicationContext().getBean(clazz);}//通过name,以及Clazz返回指定的Beanpublic static <T> T getBean(String name,Class<T> clazz){return getApplicationContext().getBean(name, clazz);}
}

二 . 读取yml配置文件

yml:配置如下

##加密数据标识
encryption:encryptionMap:#分类bank:objectBean: encryptionEnterpriseServicemethod[0]: isRepeatByNamemethod[1]: addEnterprisemethod[2]: getEnterprisemethod[3]: editEnterprisemethod[4]: editEnterpriseDetail#试卷testPaper:objectBean: encryptionTestpaperServicemethod[0]: addTestpapermethod[1]: editTestpapermethod[2]: getTestpapermethod[3]: isRepeatByName#试题question:objectBean: encryptionQuestionServicemethod[0]: addQuestionmethod[1]: updateQuestion#课程course:objectBean: encryptionCourseServicemethod[0]: addCoursemethod[1]: updateCoursemethod[2]: getCourseById#课时p:objectBean: encryptionSectionServicemethod[0]: addSessionmethod[1]: getSectionById#任务task:objectBean: encryptionScheduleServicemethod[0]: addSchedulemethod[1]: getScheduleByIdmethod[2]: updateSchedule#资源resource:objectBean: encryptionBankResServicemethod[0]: addBankResmethod[1]: getBankRes#bannerbanner:objectBean: encryptionBannerServicemethod[0]: addBannermethod[1]: getBannermethod[2]: editBanner#员工职位position:objectBean: encryptionEmployeePositionServicemethod[0]: addEmployeePositionmethod[1]: editEmployeePositionNamemethod[2]: getEmployeePositionNamemethod[3]: isRepeatByName#银行部门department:objectBean: encryptionEmployeeDepartmentServicemethod[0]: addEmployeeDepartmentmethod[1]: editEmployeeDepartmentmethod[2]: getEmployeeDepartmentNamemethod[3]: findEmployeeDepartmentIdByName

开启spring配置转换为bean配置,一般在启动类上加上:

@EnableConfigurationProperties

创建读取配置的类:配置类

package com.meeno.wzq.config;import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;import java.util.HashMap;
import java.util.Map;/*** @description: 私密数据map从配置文件中读取* @author: Wzq* @create: 2019-10-08 14:39*/
@Component
@ConfigurationProperties(prefix = "encryption")
public class EncryptionMapConfig {/*** 从配置文件中读取的encryptionMap开头的数据* 注意：名称必须与配置文件中保持一致*/private Map<String, Map<String,Object>> encryptionMap = new HashMap<>();public Map<String, Map<String,Object>> getEncryptionMap() {return encryptionMap;}public void setEncryptionMap(Map<String, Map<String,Object>> encryptionMap) {this.encryptionMap = encryptionMap;}}

三.使用配置加反射，实现具体功能，（这个具体功能，是我在项目中遇到的，实际开发中，很少遇到,除非二次开发项目）

循环遍历配置的Map,根据配置获取具体的方法Method，把key为方法名称,value为反射的Method保存到另一个static的Map中,以便在其他地方使用。

package com.meeno.wzq.constants;import com.google.common.collect.Lists;
import com.meeno.wzq.util.SpringBeanUtil;import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/*** @description: 私密数据Constants* @author: Wzq* @create: 2019-10-08 14:57*/
public class EncryptionConstants {public static Map<String, Method> encryptionConstantsMap = new HashMap<String,Method>();public static void convert(Map<String,Map<String,Object>> map) throws ClassNotFoundException, NoSuchMethodException {for (String s : map.keySet()) {Map<String,Object> tempMap = map.get(s);String objectBeanStr = tempMap.get("objectBean").toString();Map<String,String> params = (Map<String,String>) ((Map) tempMap.get("method"));List<String> methodList = Lists.newArrayList();if(params!=null){for (String param : params.keySet()) {methodList.add(params.get(param));}}for(String methodStr : methodList){Object objectBean = SpringBeanUtil.getBean(objectBeanStr);Class clazz = objectBean.getClass();Method method = null;for(int i = 0; i < clazz.getMethods().length; i++){Method tempMethod = clazz.getMethods()[i];String methodName = tempMethod.getName();if(methodName.equals(methodStr)){method = tempMethod;break;}}encryptionConstantsMap.put(methodStr,method);}}}}

四 . 加载类，项目启动时运行

package com.meeno.wzq.runner;import com.meeno.trainsys.schedule.service.LearningScheduleService;
import com.meeno.wzq.config.EncryptionMapConfig;
import com.meeno.wzq.constants.EncryptionConstants;
import com.meeno.wzq.util.AuthorizationServer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;/*** @program: server-java* @description: 启动项目时启动项目* @author: Wzq* @create: 2019-06-27 20:00*/
@Component
@Order(value = 1)
public class MyApplicationRunner implements ApplicationRunner {@AutowiredLearningScheduleService learningScheduleService;@AutowiredEncryptionMapConfig encryptionMapConfig;@Overridepublic void run(ApplicationArguments applicationArguments) throws Exception {EncryptionConstants.convert(encryptionMapConfig.getEncryptionMap());}
}

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