Spring Boot中使用MongoDB的连接池配置的方法
因为今天开发遇到了性能问题,可能与MongoDB的连接有关,所以稍稍深入看了一下,正好搜到原来有人写过这篇相关的内容,所以转载过来。回头有时间可以写个扩展到SpringForAll里,主体思路还是一样的。感谢这位美女程序媛的文章! 说明 Spring Boot中通过依赖 spring-boot-starter-data-mongodb ,来实现 spring-data-mongodb 的自动配置。 但是默认情况下,Spring Boot 中,并没有像使用MySQL或者Redis一样,提供了连接池配置的功能。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。 配置文件 为了统一Spring Boot的配置,我们要将重写的配置也配置到 application.yml 中,前缀为 spring.data.mongodb.custom 下(前缀可自己随意配置): spring: data: mongodb: custom: hosts: - 10.0.5.1 - 10.0.5.1 ports: - 27017 - 27018 replica-set: mgset-3590061 username: jancee password: abc123 database: jancee authentication-database: admin connections-per-host: 20 min-connections-per-host: 20 该配置例子中,配置了副本集,其中包含了主机 10.0.5.1:27017 和 10.0.5.1:27018 ,其它配置与Spring Boot的标准配置类似,另外, connections-per-host 为客户端的连接数, in-connections-per-host 为客户端最小连接数。 将配置包装成类 为方便调用和可读性,将上述配置包装成一个配置实体类, MongoConfig.java 代码如下: package com.feidiao.jancee.fdiot.api.config.mongo; import org.hibernate.validator.constraints.NotBlank; import org.hibernate.validator.constraints.NotEmpty; import org.springframework.stereotype.Component; import org.springframework.validation.annotation.Validated; import java.util.List; @Component @Validated public class MongoSettingsProperties { @NotBlank private String database; @NotEmpty private List<String> hosts; @NotEmpty private List<Integer> ports; private String replicaSet; private String username; private String password; private String authenticationDatabase; private Integer minConnectionsPerHost = 10; private Integer connectionsPerHost = 2; public MongoSettingsProperties() { } public String getDatabase() { return database; } public void setDatabase(String database) { this.database = database; } public List<String> getHosts() { return hosts; } public void setHosts(List<String> hosts) { this.hosts = hosts; } public List<Integer> getPorts() { return ports; } public void setPorts(List<Integer> ports) { this.ports = ports; } public String getReplicaSet() { return replicaSet; } public void setReplicaSet(String replicaSet) { this.replicaSet = replicaSet; } 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 getAuthenticationDatabase() { return authenticationDatabase; } public void setAuthenticationDatabase(String authenticationDatabase) { this.authenticationDatabase = authenticationDatabase; } public Integer getMinConnectionsPerHost() { return minConnectionsPerHost; } public void setMinConnectionsPerHost(Integer minConnectionsPerHost) { this.minConnectionsPerHost = minConnectionsPerHost; } public Integer getConnectionsPerHost() { return connectionsPerHost; } public void setConnectionsPerHost(Integer connectionsPerHost) { this.connectionsPerHost = connectionsPerHost; } } 覆盖MongoDbFactory 接下来,就是覆盖Spring Boot原有的 MongoDbFactory Bean,新建文件 MongoConfig.java ,代码如下: import com.mongodb.MongoClient; import com.mongodb.MongoClientOptions; import com.mongodb.MongoCredential; import com.mongodb.ServerAddress; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.context.properties.ConfigurationProperties; 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 java.util.ArrayList; import java.util.List; @Configuration public class MongoConfig { // 注入配置实体 @Autowired private MongoSettingsProperties mongoSettingsProperties; @Bean @ConfigurationProperties( prefix = "spring.data.mongodb.custom") MongoSettingsProperties mongoSettingsProperties() { return new MongoSettingsProperties(); } // 覆盖默认的MongoDbFactory @Bean MongoDbFactory mongoDbFactory() { //客户端配置(连接数、副本集群验证) MongoClientOptions.Builder builder = new MongoClientOptions.Builder(); builder.connectionsPerHost(mongoSettingsProperties.getConnectionsPerHost()); builder.minConnectionsPerHost(mongoSettingsProperties.getMinConnectionsPerHost()); if (mongoSettingsProperties.getReplicaSet() != null) { builder.requiredReplicaSetName(mongoSettingsProperties.getReplicaSet()); } MongoClientOptions mongoClientOptions = builder.build(); // MongoDB地址列表 List<ServerAddress> serverAddresses = new ArrayList<>(); for (String host : mongoSettingsProperties.getHosts()) { Integer index = mongoSettingsProperties.getHosts().indexOf(host); Integer port = mongoSettingsProperties.getPorts().get(index); ServerAddress serverAddress = new ServerAddress(host,port); serverAddresses.add(serverAddress); } System.out.println("serverAddresses:" + serverAddresses.toString()); // 连接认证 List<MongoCredential> mongoCredentialList = new ArrayList<>(); if (mongoSettingsProperties.getUsername() != null) { mongoCredentialList.add(MongoCredential.createScramSha1Credential( mongoSettingsProperties.getUsername(),mongoSettingsProperties.getAuthenticationDatabase() != null ? mongoSettingsProperties.getAuthenticationDatabase() : mongoSettingsProperties.getDatabase(),mongoSettingsProperties.getPassword().toCharArray())); } System.out.println("mongoCredentialList:" + mongoCredentialList.toString()); //创建客户端和Factory MongoClient mongoClient = new MongoClient(serverAddresses,mongoCredentialList,mongoClientOptions); MongoDbFactory mongoDbFactory = new SimpleMongoDbFactory(mongoClient,mongoSettingsProperties.getDatabase()); return mongoDbFactory; } } 在这里,实现了MongoDB连接时,前面配置的参数的设置,按照自己的实际情况,可以在 new SimpleMongoDbFactory 时,增加修改自己需要的配置参数。 至此,就完成了全部配置,运行测试即可。 以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程小技巧。 您可能感兴趣的文章:
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