Exception authenticating MongoCredential{mechanism=null, userName=‘zhupeng‘, source=‘ksc‘, password=

配置中配置账号和密码连接数据库，出现MongoSecurityException: Exception authenticating MongoCredential{mechanism=null, userName='zhupeng', source='ksc', password=<hidden>, mechanismProperties={}}权限异常

百度一下报错原因，看到了这条信息，

当然，这个提示等于没有提示，给我的感觉就是我少了某些东西，于是从设置账密的标签入手。点进标签，查看一下标签的定义。

        <xsd:attribute name="credentials" type="xsd:string" use="optional"><xsd:annotation><xsd:documentation><![CDATA[
The comma delimited list of username:password@database entries to use for authentication. Appending ?uri.authMechanism allows to specify the authentication challenge mechanism. If the credential you're trying to pass contains a comma itself, quote it with single quotes: '…'.]]></xsd:documentation></xsd:annotation></xsd:attribute></xsd:complexType>

其中有一段解释The comma delimited list of username:password@database entries to use for authentication. Appending ?uri.authMechanism allows to specify the authentication challenge mechanism. If the credential you're trying to pass contains a comma itself, quote it with single quotes: '…'.

这个格式是：username:password@database ，可能需要添加 ?uri.authMechanism权限(英语4级没有过，大致意思)。于是恍然大悟。原先从网上抄的写法是：

<mongo:mongo-client id="mongo" host="${mongo.host}" port="${mongo.port}"credentials="${mongo.username}:${mongo.password}@${mongo.dbname}">.......
</mongo:mongo-client>

查看xml配置，再结合翻译后的内容，发现就少了权限的问题，我通过用MongoDB数据库的工具看一下权限

添加权限后解决问题

<mongo:mongo-client id="mongo" host="${mongo.host}" port="${mongo.port}"credentials="${mongo.username}:${mongo.password}@${mongo.dbname}?authMechanism=SCRAM-SHA-1">....
</mongo:mongo-client>

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Exception authenticating MongoCredential{mechanism=null, userName=‘zhupeng‘, source=‘ksc‘, password=

配置中配置账号和密码连接数据库，出现MongoSecurityException: Exception authenticating MongoCredential{mechanism=null, userName='zhupeng', source='ksc', password=<hidden>, mechanismProperties={}}权限异常

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