java高级反射（一），通过反射批量修改属性值set，get方法 Field，对属性值进行统一操作

通过反射批量修改属性值set，get方法 Field

需求说明：对接一个系统，对方系统要求每个字段value值加密，加密方法为WebAppAESUtil.encrypt，做之前就想做一个对属性统一操作的一个方法，反射完美的解决了这个问题，类似需求可以这样操作，下面是代码，反射是个好东西

反射工具类

import lombok.extern.slf4j.Slf4j; import java.lang.reflect.AccessibleObject; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.List; /** * 类 名: FieldReflection * 描 述: * 作 者: binglong180 * 创 建: 2020-07-02 11:23 * 邮 箱: binglong172@163.com */ @Slf4j public class ReflectionUtils { public static Object FieldReflection(Object oldObj) throws Exception{ // 获取对象所有的实例域 Field[] fields = oldObj.getClass().getDeclaredFields(); // 获得访问私有实例域的权限 AccessibleObject.setAccessible(fields, true); for (Field field : fields) { Class<?> type = field.getType(); if ("String".equals(type.getSimpleName())) { Object obj = field.get(oldObj); if (obj != null) { String str = obj.toString(); field.set(oldObj,WebAppAESUtil.encrypt(str)); } } if ("CompanyDTO".equals(type.getSimpleName())){ CompanyDTO companyDTO = (CompanyDTO) field.get(oldObj); if (companyDTO != null){ companyDTO = (CompanyDTO) FieldReflection(companyDTO); field.set(oldObj,companyDTO); } } if ("List".equals(type.getSimpleName())){ List<UserInfoDTO> userInfoDTOList = (List<UserInfoDTO>) field.get(oldObj); if (userInfoDTOList != null && userInfoDTOList.size()>0){ List<UserInfoDTO> userInfoList = new ArrayList<>(); for (UserInfoDTO item: userInfoDTOList ){ if (item != null){ item = (UserInfoDTO) FieldReflection(item); userInfoList.add(item); } } field.set(oldObj,userInfoList); } } } return oldObj; } }

1、ServiceDTO 实体类 有List 属性 及CompanyDTO 属性

import lombok.Data; import org.springframework.beans.factory.annotation.Autowired; import java.util.List; /** * 服务申请接口请求参数字段 */ @Data public class ServiceDTO { private CompanyDTO nytsydcompanyrequest;//用电企业 必选:true private List<UserInfoDTO> nytsuserrequest;//用户 必选:true nytsuserrequest;//电站信息表 必选:true private NytsPartnetDTO nytsPartnet; private String debUserId;//电e宝用户编号 必选:true private String debSessionId;//会话id 必选:true private String timeStamp;//当前时间的毫秒值 必选:true private String discountType;//优惠类型 必选:true 1固定折扣金额 ，2无折扣（固定电价），3固定优惠金额 ，4先减再乘，5先乘再减。 private String status;//状态 必选:true 1正常 2失效 private String startTime;//合同开始日期 必选:true 取合同相关信息 private String endTime;//合同结束日期 必选:true 取合同相关信息 private String billDay;//账单日必选:true private String pvTopPrice;//光伏支付工厂尖电价 必选:true 录入 private String pvPeakPrice;//光伏支付工厂峰电价 必选:true 录入 private String pvFlatPrice;//光伏支付工厂平电价 必选:true 录入 private String pvBottomPrice;//光伏支付工谷尖电价 必选:true 录入 private String factoryTopPrice;//工厂支付光伏尖电价 必选:true 无信息，不传递 private String factoryPeakPrice;//工厂支付光伏尖电价 必选:true 无信息，不传递 private String factoryFlatPrice;//工厂支付光伏尖电价 必选:true 无信息，不传递 private String factoryBottomPrice;//工厂支付光伏尖电价 必选:true 无信息，不传递 private String fdHouseNumber;//发电户号 必选:true 录入 private String preferential;//优惠(减多少) 必选:true 默认初始值：0 private String discount;//折扣（打几折乘以多少） private String signTime;//合同签订日期 private String image;//合同附件 格式为png转base64 private String remark;//合同说明 private String lastUpdateTime;//上次更新时间 private String ydHouseNumber;//用电户号录入 public static ServiceDTO getInitModel(){ ServiceDTO serviceVo = new ServiceDTO(); serviceVo.setChannelType("03"); serviceVo.setStatus("1"); serviceVo.setDiscountType("2"); serviceVo.setPreferential("0"); long timeMillis = System.currentTimeMillis(); serviceVo.setTimeStamp(String.valueOf(timeMillis)); // String token = cacheStore.getTokenCache().get(current.getId()); // serviceVo.setDebSessionId(token); return serviceVo; } }

CompanyDTO 类

import lombok.Data; /** * 用电企业字段 */ @Data public class CompanyDTO { private String companyType;//公司类型 必选:true 1发电企业 2用电企业 private String companyName;//公司名称 必选:true 取业主名称（录入或合同） private String groupCompany;//集团公司 必选:true 1隶属集团公司，2不是集团公司 private String bankName;//开户行名称 必选:true private String orgCode;//组织信用代码(统一社会信用代码) 必选:true 取业主统一社会信用代码（录入或企业认证） private String bankAccount;//银行账户 必选:true private String address;//公司地址 private String legalPerson;//公司法人 取业主法人姓名（录入或企业认证） private String telPhone;//公司联系电话 private String province;//省 取企业认证申请时录入的相关信息 private String city;//市 取企业认证申请时录入的相关信息 private String area;//区 取企业认证申请时录入的相关信息 }

运行后效果

加密前： { "billDay": null, "channelType": "03", "debSessionId": null, "debUserId": "00158368", "discount": null, "discountType": "2", "endTime": "2020-06-01", "factoryBottomPrice": null, "factoryFlatPrice": null, "factoryPeakPrice": null, "factoryTopPrice": null, "fdHouseNumber": "132", "image": null, "lastUpdateTime": null, "nytsPartnet": { "partnetname": "" }, "nytsfdcompanyrequest": { "address": "天津市,市辖区,和平区", "area": null, "bankAccount": "6272000020006544121", "bankName": "工商银行", "city": null, "companyName": "上海御漏管道工程有限公司", "companyType": "1", "groupCompany": "2", "legalPerson": "兰兰", "orgCode": "310118003050098", "province": null, "telPhone": "13351111111" }, "nytspowerstationrequest": { "address": "123", "areaCode": "00168361", "capacity": "10000.0000", "fdHouseNumber": null, "nytspowerstationservicerequest": { "orderTime": null, "servicePeriod": "10", "status": "1", "termValidity": "2030-06-16", "unitPrice": null }, "stationName": null, "stationType": null }, "nytsuserrequest": [{ "address": null, "birthday": null, "contentType": "1", "email": null, "idCard": null, "idCorwardImg": null, "idReverseImg": null, "nation": null, "nickName": null, "phone": "13351111111", "photoUrl": null, "realName": null, "sex": null, "userType": "00", "wechat": null }, { "address": null, "birthday": null, "contentType": "2", "email": null, "idCard": null, "idCorwardImg": null, "idReverseImg": null, "nation": null, "nickName": null, "phone": "13351111111", "photoUrl": null, "realName": null, "sex": null, "userType": "00", "wechat": null }], "nytsydcompanyrequest": { "address": "天津市,市辖区,和平区", "area": null, "bankAccount": "6272000020006544121", "bankName": "工商银行", "city": null, "companyName": "上海御漏管道工程有限公司", "companyType": "2", "groupCompany": "2", "legalPerson": "兰兰", "orgCode": "310118003050098", "province": null, "telPhone": "13351111111" }, "preferential": "0", "pvBottomPrice": "10.0", "pvFlatPrice": "10.0", "pvPeakPrice": "10.0", "pvTopPrice": "10.0", "remark": null, "signTime": null, "startTime": "2020-05-01", "status": "1", "timeStamp": "1593655856654", "ydHouseNumber": "132" } 加密后 { "billDay": null, "channelType": "fcc1b6a60f46587174758d8732e8e462", "debSessionId": null, "debUserId": "9a47daef5afeae59dd2743c0004c4bba", "discount": null, "discountType": "1a3da64489b8c6722dafbad407691469", "endTime": "171ae7996c4e06809d6ba84537b50c4e", "factoryBottomPrice": null, "factoryFlatPrice": null, "factoryPeakPrice": null, "factoryTopPrice": null, "fdHouseNumber": "01e6db51b86d93ab6c3e82aa7615517d", "image": null, "lastUpdateTime": null, "nytsPartnet": { "partnetname": "f9f5f4174d957aea15993b7e0d513ae6" }, "nytsfdcompanyrequest": { "address": "b5cb9ce0779ef9eec64cb929c0304d99bb4620cffea9fa9176274ac07034aae6", "area": null, "bankAccount": "4adc65a091aa74a60b4c311f697a39db57782e365ff7b846416d0c6463551d3d", "bankName": "3a2519ef5285fb116fd38c111f4bb4c6", "city": null, "companyName": "4a43479c06b3a226eb8fbea379097a1194296bb2ef4fca20beb000c34c8d31ca3d1243347193bdc44070027ad9116854", "companyType": "8823fb5b75bf0b2b4b19a6d85e3bfce4", "groupCompany": "1a3da64489b8c6722dafbad407691469", "legalPerson": "a96ae23fa6279259a481f98c0272df84", "orgCode": "91b387200bc3e768c33ef86404a251ee", "province": null, "telPhone": "f244afac5cb1e511b3ebc51b2982b322" }, "nytspowerstationrequest": { "address": "bb9e08229faca7138fc2e64f5d5e58af", "areaCode": "f751ecf3877db29f985c2249788863ff", "capacity": "cdb31240a0568d01ff9df18e46a11499", "fdHouseNumber": null, "nytspowerstationservicerequest": { "orderTime": null, "servicePeriod": "890bb0e5fc386329d9e582bd600ccd0e", "status": "8823fb5b75bf0b2b4b19a6d85e3bfce4", "termValidity": "3b0e0990362adfaf1087d06a63241cb6", "unitPrice": null }, "stationName": null, "stationType": null }, "nytsuserrequest": [{ "address": null, "birthday": null, "contentType": "8823fb5b75bf0b2b4b19a6d85e3bfce4", "email": null, "idCard": null, "idCorwardImg": null, "idReverseImg": null, "nation": null, "nickName": null, "phone": "f244afac5cb1e511b3ebc51b2982b322", "photoUrl": null, "realName": null, "sex": null, "userType": "751f67e04de34515ef48ab063a68815e", "wechat": null }, { "address": null, "birthday": null, "contentType": "1a3da64489b8c6722dafbad407691469", "email": null, "idCard": null, "idCorwardImg": null, "idReverseImg": null, "nation": null, "nickName": null, "phone": "f244afac5cb1e511b3ebc51b2982b322", "photoUrl": null, "realName": null, "sex": null, "userType": "751f67e04de34515ef48ab063a68815e", "wechat": null }], "nytsydcompanyrequest": { "address": "b5cb9ce0779ef9eec64cb929c0304d99bb4620cffea9fa9176274ac07034aae6", "area": null, "bankAccount": "4adc65a091aa74a60b4c311f697a39db57782e365ff7b846416d0c6463551d3d", "bankName": "3a2519ef5285fb116fd38c111f4bb4c6", "city": null, "companyName": "4a43479c06b3a226eb8fbea379097a1194296bb2ef4fca20beb000c34c8d31ca3d1243347193bdc44070027ad9116854", "companyType": "1a3da64489b8c6722dafbad407691469", "groupCompany": "1a3da64489b8c6722dafbad407691469", "legalPerson": "a96ae23fa6279259a481f98c0272df84", "orgCode": "91b387200bc3e768c33ef86404a251ee", "province": null, "telPhone": "f244afac5cb1e511b3ebc51b2982b322" }, "preferential": "4132f8c881031504cb8d0ad0e5ff37a8", "pvBottomPrice": "a9321bf5b7bec7702c218852c4a2c545", "pvFlatPrice": "a9321bf5b7bec7702c218852c4a2c545", "pvPeakPrice": "a9321bf5b7bec7702c218852c4a2c545", "pvTopPrice": "a9321bf5b7bec7702c218852c4a2c545", "remark": null, "signTime": null, "startTime": "b5221eabb6ce34d33d3b1bedc2611c59", "status": "8823fb5b75bf0b2b4b19a6d85e3bfce4", "timeStamp": "c10b4c45d1235af1b48b62c8d1fdc0c1", "ydHouseNumber": "01e6db51b86d93ab6c3e82aa7615517d" }