我使用MongoDbFactory与Java连接到mongodb。但是mongo服务每小时至少抛出一次套接字异常。因此我被迫重启mongodb服务以恢复操作。我认为这可能是由于与java的mongodb的未关闭连接的结果,并且MongoDbFactory也没有为我提供关闭连接的功能。如何确保在特定会话后关闭所有连接。
这是我正在使用的代码:
package com.####.mongo.configuration;
import com.mongodb.Mongo;
import org.springframework.context.annotation.Bean;
import org.springframework.data.mongodb.MongoDbFactory;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
import org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper;
import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
@Configuration
public class SpringMongoFeedConfig {
public @Bean
MongoDbFactory mongoDbFactory() throws Exception {
return new SimpleMongoDbFactory(new Mongo(), "feedDatabase");
}
public @Bean
MongoTemplate mongoTemplate() throws Exception {
MappingMongoConverter converter = new MappingMongoConverter(mongoDbFactory(), new MongoMappingContext());
converter.setTypeMapper(new DefaultMongoTypeMapper(null));
MongoTemplate mongoTemplate = new MongoTemplate(mongoDbFactory(), converter);
return mongoTemplate;
}
}
和
private String insertFeedsToMongo(FeedMongoDTO feedObject, FeedType type) throws UnknownHostException {
try {
ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringMongoFeedConfig.class);
MongoOperations mongoOperation = (MongoOperations) ctx.getBean("mongoTemplate");
switch (type) {
case FOLLOW:
mongoOperation.save(feedObject, "feedsByUid");
break;
case GENERAL:
mongoOperation.save(feedObject, "allFeeds");
break;
default:
break;
}
return feedObject.getId();
} catch (Exception ex) {
log.info("insertFeedsToMongo() : mongo Exception - ", ex);
return null;
}
}
答案 0 :(得分:2)
我也遇到了Mongo
对象的问题。确保在特定连接完成后调用myMongo.close()
解决了这个问题。
我建议将使用new Mongo()
创建的实例存储在您的工厂函数中,以便稍后关闭(刚刚注意到这是一个春天的事情。建议仍然存在:跟踪您的SimpleMongoDbFactory
可能就是那个地方)。Mongo
个实例。
答案 1 :(得分:2)
根据akaIDIOT的建议,我已完成以下工作
public class FeedMongoOperations {
public static transient Log log = LogFactory.getLog(FeedMongoOperations.class);
private Mongo mongo;
private SimpleMongoDbFactory dbFactory;
private MongoTemplate mongoTemplate;
public boolean openDbConnection() {
try {
MongoOptions options = new MongoOptions();
options.connectionsPerHost = 100;
mongo = new Mongo("localhost", options);
dbFactory = new SimpleMongoDbFactory(mongo, "feedDatabase");
MappingMongoConverter converter = new MappingMongoConverter(dbFactory, new MongoMappingContext());
converter.setTypeMapper(new DefaultMongoTypeMapper(null));
mongoTemplate = new MongoTemplate(dbFactory, converter);
return true;
} catch (Exception e) {
return false;
}
}
public boolean closeDbConnection() {
try {
mongoTemplate = null;
dbFactory = null;
mongo.close();
return true;
}
}
public String save(FeedMongoDTO feed, String collectionName) {
try {
mongoTemplate.save(feed, collectionName);
return feed.getId();
} catch (Exception ex) {
return null;
}
}
public FeedMongoDTO getFeed(String mongoId, String collectionName) {
try {
FeedMongoDTO feedMongoDTO = mongoTemplate.findOne(new Query(Criteria.where("id").is(mongoId)), FeedMongoDTO.class,
collectionName);
return feedMongoDTO;
} catch (Exception ex) {
return null;
}
}
}