UnaryOperator汇总

 1 package com.example.springstudy.test.functions;
 2 
 3 import cn.hutool.core.util.ReflectUtil;
 4 import com.example.springstudy.test.User;
 5 import com.google.common.collect.Lists;
 6 
 7 import java.lang.reflect.Field;
 8 import java.util.List;
 9 import java.util.Optional;
10 import java.util.UUID;
11 import java.util.function.UnaryOperator;
12 
13 /**
14  * @Author: guodong
15  * @CreateTime: 2023-05-05  16:57
16  * @Description: TODO
17  * @Version: 1.0
18  */
19 public class UnaryOperatorTest {
20 
21 
22     // 提供数据
23     public <T> void supplyData(Class<T> tClass, UnaryOperator<List<T>> unaryOperator) throws Exception {
24         List<T> userList = Lists.newArrayList();
25         for (int i = 1; i <= 10; i++) {
26             T entityNew = (T) ReflectUtil.newInstance(tClass);
27             Field[] entityNewFields = ReflectUtil.getFields(entityNew.getClass());
28             for (Field field : entityNewFields) {
29                 field.setAccessible(true);
30                 if (field.getName().equals("id")) {
31                     field.set(entityNew, Long.valueOf(i));
32                 } else if (field.getName().equals("age")) {
33                     field.set(entityNew, i);
34                 } else if (field.getName().equals("name")) {
35                     field.set(entityNew, UUID.randomUUID().toString());
36                 }
37             }
38             userList.add(entityNew);
39         }
40         unaryOperator.apply(userList);
41     }
42 
43 
44     // 处理逻辑
45     public void handleData() throws Exception {
46         Optional<User> optionalUser = Optional.of(new User());
47         supplyData(User.class, list -> {
48             saveUserInfo(list);
49             return null;
50         });
51     }
52 
53     // 保存数据
54     public void saveUserInfo(List<User> userList) {
55         userList.stream().forEach(data -> System.out.println(data));
56     }
57 
58 
59     public static void main(String[] args) throws Exception {
60         UnaryOperatorTest unaryOperatorTest = new UnaryOperatorTest();
61         unaryOperatorTest.handleData();
62     }
63 
64 
65 }