Java 通过反射获取注解属性信息

// 属性对象存储类
public class MetadataFiled {

    /**
     * key 对应对象中间的属性
     */
    private String key;

    /**
     * 字段标签
     */
    private String label;

    public MetadataFiled(String key, String label) {
        this.key = key;
        this.label = label;
    }

    public String getKey() {
        return key;
    }

    public String getLabel() {
        return label;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public void setLabel(String label) {
        this.label = label;
    }
}

// 对象属性封装类
public class ReflectionUtils {

    /**
     * 获取属性名（使用下划线命名法）与对应中文名的映射关系。
     *
     * @param clazz 要获取属性信息的类
     * @return 属性名与中文名的映射关系
     */
    public static Map<String, String> getFiledMap(Class<?> clazz) {
        Map<String, String> propertyMap = new HashMap<>();
        Field[] fields = clazz.getDeclaredFields();

        for (Field field : fields) {
            ApiModelProperty annotation = field.getAnnotation(ApiModelProperty.class);
            if (annotation != null) {
                String propertyName = field.getName();
                String chineseName = annotation.value();

                // 将驼峰命名转换为下划线命名
                String underscoredName = camelToUnderscore(propertyName);
                propertyMap.put(underscoredName, chineseName);
            }
        }
        return propertyMap;
    }

    /**
     * 获取属性元数据列表，每个元素包含属性名（使用下划线命名法）和对应中文名。
     *
     * @param clazz 要获取属性信息的类
     * @return 包含属性元数据的列表
     */
    public static List<MetadataFiled> getFiled(Class<?> clazz) {
        List<MetadataFiled> propertyMetadataList = new ArrayList<>();
        Field[] fields = clazz.getDeclaredFields();

        for (Field field : fields) {
            ApiModelProperty annotation = field.getAnnotation(ApiModelProperty.class);
            if (annotation != null) {
                String propertyName = field.getName();
                String chineseName = annotation.value();

                // 将驼峰命名转换为下划线命名
                String underscoredName = camelToUnderscore(propertyName);
                propertyMetadataList.add(new MetadataFiled(underscoredName, chineseName));
            }
        }
        return propertyMetadataList;
    }

    /**
     * 将驼峰命名字符串转换为下划线命名。
     *
     * @param input 驼峰命名的字符串
     * @return 转换为下划线命名的字符串
     */
    private static String camelToUnderscore(String input) {
        StringBuilder result = new StringBuilder();
        for (int i = 0; i < input.length(); i++) {
            char currentChar = input.charAt(i);
            if (Character.isUpperCase(currentChar)) {
                result.append("_").append(Character.toLowerCase(currentChar));
            } else {
                result.append(currentChar);
            }
        }
        return result.toString();
    }
}

import com.fasterxml.jackson.annotation.JsonFormat;
import com.yf.mybatis.entity.BaseEntity;
import io.swagger.annotations.ApiModelProperty;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.util.Date;

/**
 * @author ： FengQing
 * @date ：Created in 2023-11-10
 * @modified By：
 * @version: 1.0
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
public class ReceiptDTO extends BaseEntity {

    private static final long serialVersionUID = 1L;

    @ApiModelProperty("测试1")
    private String channelName;

    @ApiModelProperty("测试2")
    private String channelAs;

}

@ApiOperation(value = "分页列表", notes = "分页列表")
    @PostMapping("/page")
    public R<PageUtils<ReceiptVo>> list(@RequestBody Map<String, Object> params){
        PageUtils<ReceiptVo> page = receiptService.selectReceiptPage(params);
        // 获取属性名和中文描述的映射
        page.setFields(ReflectionUtils.getField(ReceiptDTO.class));
        return R.data(page);
    }

{
    "code": 0,
    "msg": "操作成功",
    "data": {
        "totalCount": 1,
        "size": 10,
        "totalPage": 1,
        "current": 1,
        "fields": [
            {
                "key": "channel_name",
                "label": "测试1"
            },
            {
                "key": "channel_as",
                "label": "测试2"
            }
        ],
        "list": []
    }
}