SpringBoot中使用MongoDB的连接池配置
目录
- 引入依赖
- 配置文件
- 配置文件映射为JavaBean
- 覆盖MongoDbFactory
- MongoDB测试
- 创建数据实体
- 创建Dao接口及实现
- 编写测试代码
在SpringBoot中,我们可以通过引入 spring-boot-starter-data-mongodb 依赖来实现spring-data-mongodb 的自动配置。但是,默认情况下,该依赖并没有像使用MySQL或者Redis那样为我们提供连接池配置的功能。因此,我们需要自行重写 MongoDbFactory,实现MongoDB客户端连接的参数配置扩展。需要说明的是,MongoDB的客户端本身就是一个连接池,因此,我们只需要配置客户端即可。
引入依赖
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.2.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies>
配置文件
为了方便对Mongodb进行统一管理,我们将相关的配置抽取到 mongo-pool.properties 中,前缀为spring.data.mongodb(前缀可自己随意配置):
spring.data.mongodb.address=172.16.250.234:27017,172.16.250.239:27017,172.16.250.240:27017 spring.data.mongodb.replica-set=rs0 spring.data.mongodb.database=test spring.data.mongodb.username=admin spring.data.mongodb.password=admin # Configure spring.data.mongodbDB Pool spring.data.mongodb.min-connections-per-host=10 spring.data.mongodb.max-connections-per-host=100 spring.data.mongodb.threads-allowed-to-block-for-connection-multiplier=5 spring.data.mongodb.server-selection-timeout=30000 spring.data.mongodb.max-wait-time=120000 spring.data.mongodb.max-connection-idel-time=0 spring.data.mongodb.max-connection-life-time=0 spring.data.mongodb.connect-timeout=10000 spring.data.mongodb.socket-timeout=0 spring.data.mongodb.socket-keep-alive=false spring.data.mongodb.ssl-enabled=false spring.data.mongodb.ssl-invalid-host-name-allowed=false spring.data.mongodb.always-use-m-beans=false spring.data.mongodb.heartbeat-socket-timeout=20000 spring.data.mongodb.heartbeat-connect-timeout=20000 spring.data.mongodb.min-heartbeat-frequency=500 spring.data.mongodb.heartbeat-frequency=10000 spring.data.mongodb.local-threshold=15 spring.data.mongodb.authentication-database=auth_dev
配置文件映射为JavaBean
为方便调用,将上述配置包装成一个配置实体类,代码如下:
import java.util.List; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.PropertySource; import org.springframework.stereotype.Component; @Component @PropertySource(value = "classpath:mongo-pool.properties") @ConfigurationProperties(prefix = "spring.data.mongodb") public class MongoSettingsProperties { private List<String> address; private String replicaSet; private String database; private String username; private String password; private Integer minConnectionsPerHost = 0; private Integer maxConnectionsPerHost = 100; private Integer threadsAllowedToBlockForConnectionMultiplier = 5; private Integer serverSelectionTimeout = 30000; private Integer maxWaitTime = 120000; private Integer maxConnectionIdleTime = 0; private Integer maxConnectionLifeTime = 0; private Integer connectTimeout = 10000; private Integer socketTimeout = 0; private Boolean socketKeepAlive = false; private Boolean sslEnabled = false; private Boolean sslInvalidHostNameAllowed = false; private Boolean alwaysUseMBeans = false; private Integer heartbeatConnectTimeout = 20000; private Integer heartbeatSocketTimeout = 20000; private Integer minHeartbeatFrequency = 500; private Integer heartbeatFrequency = 10000; private Integer localThreshold = 15; private String authenticationDatabase; // 省略Getters和Setters方法 }
覆盖MongoDbFactory
自定义创建一个MongoDbFactory用来替代Springboot为我们自动装配的MongoDbFactory,代码如下:
import java.util.ArrayList; import java.util.List; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.mongodb.MongoDbFactory; import org.springframework.data.mongodb.core.SimpleMongoDbFactory; import com.mongodb.MongoClient; import com.mongodb.MongoClientOptions; import com.mongodb.MongoCredential; import com.mongodb.ServerAddress; @Configuration public class MongoConfig { private static final Logger logger = LoggerFactory.getLogger(MongoConfig.class); // 覆盖容器中默认的MongoDbFacotry Bean @Bean @Autowired public MongoDbFactory mongoDbFactory(MongoSettingsProperties properties) { // 客户端配置(连接数,副本集群验证) MongoClientOptions.Builder builder = new MongoClientOptions.Builder(); builder.connectionsPerHost(properties.getMaxConnectionsPerHost()); builder.minConnectionsPerHost(properties.getMinConnectionsPerHost()); if (properties.getReplicaSet() != null) { builder.requiredReplicaSetName(properties.getReplicaSet()); } builder.threadsAllowedToBlockForConnectionMultiplier( properties.getThreadsAllowedToBlockForConnectionMultiplier()); builder.serverSelectionTimeout(properties.getServerSelectionTimeout()); builder.maxWaitTime(properties.getMaxWaitTime()); builder.maxConnectionIdleTime(properties.getMaxConnectionIdleTime()); builder.maxConnectionLifeTime(properties.getMaxConnectionLifeTime()); builder.connectTimeout(properties.getConnectTimeout()); builder.socketTimeout(properties.getSocketTimeout()); // builder.socketKeepAlive(properties.getSocketKeepAlive()); builder.sslEnabled(properties.getSslEnabled()); builder.sslInvalidHostNameAllowed(properties.getSslInvalidHostNameAllowed()); builder.alwaysUseMBeans(properties.getAlwaysUseMBeans()); builder.heartbeatFrequency(properties.getHeartbeatFrequency()); builder.minHeartbeatFrequency(properties.getMinHeartbeatFrequency()); builder.heartbeatConnectTimeout(properties.getHeartbeatConnectTimeout()); builder.heartbeatSocketTimeout(properties.getHeartbeatSocketTimeout()); builder.localThreshold(properties.getLocalThreshold()); MongoClientOptions mongoClientOptions = builder.build(); // MongoDB地址列表 List<ServerAddress> serverAddresses = new ArrayList<ServerAddress>(); for (String address : properties.getAddress()) { String[] hostAndPort = address.split(":"); String host = hostAndPort[0]; Integer port = Integer.parseInt(hostAndPort[1]); ServerAddress serverAddress = new ServerAddress(host, port); serverAddresses.add(serverAddress); } logger.info("serverAddresses:" + serverAddresses.toString()); // 连接认证 // MongoCredential mongoCredential = null; // if (properties.getUsername() != null) { // mongoCredential = MongoCredential.createScramSha1Credential( // properties.getUsername(), properties.getAuthenticationDatabase() != null // ? properties.getAuthenticationDatabase() : properties.getDatabase(), // properties.getPassword().toCharArray()); // } // 创建认证客户端 // MongoClient mongoClient = new MongoClient(serverAddresses, mongoCredential, mongoClientOptions); // 创建非认证客户端 MongoClient mongoClient = new MongoClient(serverAddresses, mongoClientOptions); // 创建MongoDbFactory MongoDbFactory mongoDbFactory = new SimpleMongoDbFactory(mongoClient, properties.getDatabase()); return mongoDbFactory; } }
MongoDB测试
创建数据实体
import java.io.Serializable; public class UserEntity implements Serializable { private static final long serialVersionUID = 1L; private Long id; private String userName; private String passWord; public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getPassWord() { return passWord; } public void setPassWord(String passWord) { this.passWord = passWord; } public String toString() { return "id: " + id + ",userName: " + userName + ",passWord: " + passWord; } }
创建Dao接口及实现
public interface UserDao { void saveUser(UserEntity user); UserEntity findUserByName(String userName); } import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.mongodb.core.MongoTemplate; import org.springframework.data.mongodb.core.query.Criteria; import org.springframework.data.mongodb.core.query.Query; import org.springframework.stereotype.Component; @Component public class UserDaoImpl implements UserDao { @Autowired private MongoTemplate mongoTemplate; @Override public void saveUser(UserEntity user) { mongoTemplate.save(user); } @Override public UserEntity findUserByName(String userName) { Query query = new Query(Criteria.where("userName").is(userName)); UserEntity user = mongoTemplate.findOne(query, UserEntity.class); return user; } }
编写测试代码
import java.util.Optional; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.data.domain.Example; import org.springframework.test.context.junit4.SpringRunner; import com.pengjunlee.UserDao; import com.pengjunlee.UserEntity; import com.pengjunlee.UserRepository; @RunWith(SpringRunner.class) @SpringBootTest public class MongoTest { @Autowired private UserDao userDao; @Autowired private UserRepository userRepository; @Test public void testSaveUser() { UserEntity user = new UserEntity(); user.setId(88L); user.setUserName("XiaoMing"); user.setPassWord("123456"); userDao.saveUser(user); } @Test public void testFindUser01() { UserEntity user = userDao.findUserByName("XiaoMing"); System.out.println(user); } @Test public void testFindUser02() { UserEntity queryUser = new UserEntity(); queryUser.setUserName("XiaoMing"); Example<UserEntity> example = Example.of(queryUser); Optional<UserEntity> optional = userRepository.findOne(example); System.out.println(optional.get()); } }
查询结果:
id: 88,userName: XiaoMing,passWord: 123456
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