如何在Spring Mongo中调用MongoDB addFields？

import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.aggregation.Aggregation;
import org.springframework.data.mongodb.core.aggregation.AggregationOperation;
import org.springframework.data.mongodb.core.aggregation.AddFieldsOperation;
import org.springframework.data.mongodb.core.aggregation.Fields;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;

import java.util.Arrays;
import java.util.List;

public class SpringMongoExample {

    private MongoTemplate mongoTemplate;

    public void addFieldsExample() {
        // 创建addFields操作
        AddFieldsOperation addFieldsOperation = Aggregation.addFields()
                .addFieldWithValue("newField", "value")
                .build();

        // 创建聚合查询
        AggregationOperation matchOperation = Aggregation.match(Criteria.where("field").is("value"));
        List<AggregationOperation> operations = Arrays.asList(matchOperation, addFieldsOperation);
        Aggregation aggregation = Aggregation.newAggregation(operations);

        // 执行聚合查询
        List<YourEntity> result = mongoTemplate.aggregate(aggregation, "yourCollection", YourEntity.class).getMappedResults();
    }
}