Sas*_*ska 5 java mongodb mongodb-java
如何获取数据库中所有集合的列表?
reg*_*gie 15
获取集合列表每个数据库都有零个或多个集合.您可以从数据库中检索它们的列表(并打印出任何存在的数据):
Set<String> colls = db.getCollectionNames();
for (String s : colls) {
System.out.println(s);
}
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编辑:正如@ Andrew的答案中所建议的,更新的java客户端使用此:
/**
* Gets the names of all the collections in this database.
*
* @return an iterable containing all the names of all the collections in this database
*/
MongoIterable<String> listCollectionNames();
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并根据文档类型获取可迭代集合:
/**
* Finds all the collections in this database.
*
* @param resultClass the class to decode each document into
* @param <TResult> the target document type of the iterable.
* @return the list collections iterable interface
* @mongodb.driver.manual reference/command/listCollections listCollections
*/
<TResult> ListCollectionsIterable<TResult> listCollections(Class<TResult> resultClass);
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