使用spring data mongo MongoTemplate 插入数据时 手动指定集合名称时，索引不会自动创建?-灵析社区

插入数据之前或者之后： public void save(DatapointData data) { String collectionName = data.getPid(); // 保证集合的索引存在 ensureIndexes(DatapointData.class, collectionName); // 插入数据 mongoTemplate.insert(data, collectionName); } public void ensureIndexes(Class entityClass, String collectionName) { IndexOperations indexOps = mongoTemplate.indexOps(collectionName); indexOps.ensureIndexes(entityClass); } 建一个MongoIndexCreator类： import org.springframework.data.mongodb.core.MongoTemplate; import org.springframework.data.mongodb.core.index.IndexOperations; import org.springframework.stereotype.Component; @Component public class MongoIndexCreator { private final MongoTemplate mongoTemplate; public MongoIndexCreator(MongoTemplate mongoTemplate) { this.mongoTemplate = mongoTemplate; } public void createIndexes() { // 创建DatapointData集合的索引 IndexOperations indexOps = mongoTemplate.indexOps(DatapointData.class); indexOps.ensureIndexes(); } } Spring Boot应用程序启动时候调这个方法： import org.springframework.boot.CommandLineRunner; import org.springframework.stereotype.Component; @Component public class IndexInitializerRunner implements CommandLineRunner { private final MongoIndexCreator mongoIndexCreator; public IndexInitializerRunner(MongoIndexCreator mongoIndexCreator) { this.mongoIndexCreator = mongoIndexCreator; } @Override public void run(String... args) throws Exception { mongoIndexCreator.createIndexes(); } }