解决 PO映射 字母大小写错误

// 方式一 在类 和字段上加注解， 每个字段要单独加注解
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;


@Data
@JsonAutoDetect(getterVisibility = JsonAutoDetect.Visibility.NONE)
public class MMDto {
    @JsonProperty(value = "vBillNo")
    private String vBillNo;//	申请单号
}

// 方式二  在类上加注解，对所有字段生效
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;


@Data
@JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.ANY, getterVisibility = JsonAutoDetect.Visibility.NONE, setterVisibility = JsonAutoDetect.Visibility.NONE)
public class MMDto {
    
    private String vBillNo;//	申请单号
}