1，前置逻辑我就不写了，只给出关键性代码

可以直接切postMapping这个注解，然后获取入参，然后执行下面代码，
后续我会给出完整的代码

2.工具类

import com.example.study.annotation.Encryption;
import com.example.study.entity.User;
import com.example.study.entity.User1;
import com.example.study.entity.User2;import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;public class EncryptionUtils {public static void main(String[] args) {/*** @Data* public class User {*     @Encryption*     private String name;*     private Integer age;*     @Encryption*     private List<User1> users;*     @Encryption*     private User2 user2;* }** @Data* public class User1 {*     @Encryption*     private String address;*     private String address1;* }* * @Data* public class User2 {*     @Encryption*     private String nickName;*     private String password;* }*/User user = new User();user.setName("name1");User1 user1 = new User1();user1.setAddress("address1");user1.setAddress1("address2");User1 user3 = new User1();user3.setAddress("address3");user3.setAddress1("address4");user.setUsers(Arrays.asList(user1, user3));User2 user2 = new User2();user2.setNickName("nuckName");user2.setPassword("123344");user.setUser2(user2);encryptFields(user);System.out.println(user);}public static void encryptFields(Object object) {Class<?> clazz = object.getClass();Field[] fields = clazz.getDeclaredFields();for (Field field : fields) {field.setAccessible(true);try {if (field.isAnnotationPresent(Encryption.class)) {Object value = field.get(object);if (value instanceof String) {// 处理字符串字段String encryptedValue = encrypt((String) value);field.set(object, encryptedValue);} else if (value instanceof Collection) {// 处理集合字段Collection<?> collection = (Collection<?>) value;collection.forEach(item -> encryptFields(item));} else if (value instanceof Map) {// 处理Map字段Map<?, ?> map = (Map<?, ?>) value;map.forEach((key, val) -> encryptFields(val));} else if (value != null && !value.getClass().isArray()) {// 处理其他对象字段encryptFields(value);}}} catch (IllegalAccessException e) {throw new RuntimeException("Unable to access field", e);}}}public static String encrypt(String value) {// 实现加密逻辑return "encrypted_" + value;}public static String decrypt(String encryptedValue) {// 实现解密逻辑if (encryptedValue != null && encryptedValue.startsWith("encrypted_")) {return encryptedValue.substring("encrypted_".length());}return encryptedValue;}
}