Java 属性拷贝 三种实现方式

第一种

List<OrederPayCustomer> orederPayCustomerList = this.list(queryWrapper);
List<CustomerResp>customerRespList=new ArrayList<>();for (OrederPayCustomer orederPayCustomer : orederPayCustomerList) {CustomerResp customerResp = new   CustomerResp();customerResp.setId(orederPayCustomer.getId());customerResp.setAppName(orederPayCustomer.getAppName());customerResp.setAppCode(orederPayCustomer.getAppName());customerResp.setStatus(orederPayCustomer.getStatus());customerResp.setCreatedBy(orederPayCustomer.getCreatedBy());customerResp.setCreatedTime(orederPayCustomer.getCreatedTime());customerRespList.add(customerResp);return customerRespList;
}

第二种

List<OrederPayCustomer> orederPayCustomerList = this.list(queryWrapper);
List<CustomerResp>customerRespList=new ArrayList<>();  customerRespList = orederPayCustomerList.stream().map(orederPayCustomer -> {CustomerResp customerResp = new         CustomerResp();customerResp.setId(orederPayCustomer.getId());     customerResp.setAppName(orederPayCustomer.getAppName());customerResp.setAppCode(orederPayCustomer.getAppName());customerResp.setStatus(orederPayCustomer.getStatus());customerResp.setCreatedBy(orederPayCustomer.getCreatedBy());customerResp.setCreatedTime(orederPayCustomer.getCreatedTime());customerRespList.add(customerResp);return customerRespList;
}).toList();

 第三种  不再使用创建对象的方式来去构建对象

List<OrederPayCustomer> orederPayCustomerList = this.list(queryWrapper);
List<CustomerResp>customerRespList=new ArrayList<>(); customerRespList = orederPayCustomerList.stream().map(orederPayCustomer -> {return CustomerResp.builder().id(orederPayCustomer.getId()).appName(orederPayCustomer.getAppName()).appCode(orederPayCustomer.getAppCode()).status(orederPayCustomer.getStatus()).createdBy(orederPayCustomer.getCreatedBy()).createdTime(orederPayCustomer.getCreatedTime()).build();
}).toList();
return customerRespList;

 简化版本

List<OrederPayCustomer> orederPayCustomerList = this.list(queryWrapper);return   orederPayCustomerList.stream().map(CustomerResp::CustomerBuild).toList();

 上面实现的CustomerBuild    

 数据库对象构建返回结果对象
public static CustomerResp CustomerBuild(OrederPayCustomer orederPayCustomer) {return CustomerResp.builder().id(orederPayCustomer.getId()).appName(orederPayCustomer.getAppName()).appCode(orederPayCustomer.getAppCode()).status(orederPayCustomer.getStatus()).createdBy(orederPayCustomer.getCreatedBy()).createdTime(orederPayCustomer.getCreatedTime()).build();
}