asp.net - Web.config 和 MySQL 问题。

Question

总而言之，我的机器出了问题，我不得不重建它。我重新安装了所有软件，并将项目备份放回机器上。我一直在尝试解决我无法解决的 SQL 连接问题。

因此，在经历了许多更改和错误之后，我将工作的生产版本放回了我的机器上。当我运行它时，出现以下错误: 解析器错误消息:未知数据库“p10009307_sec”

数据库是我的 SQL Workbench 已知的，如果我在页面上放置数据库连接并配置它，我就可以连接。

问题是它在哪里寻找找不到MySQL？我假设它在 Webconfig 中，但我没有看到任何会使 localhost 不同的异常情况。我制作了一份我的 webconfig 的副本，其中仅包含引用 MySQL 的部分。

 `<connectionStrings>
<remove name="LocalMySqlServer" />
<add name="LocalMySqlServer" connectionString="server=localhost;password=xxxxxxxxxx;
User Id=xxxxxxxxxx;logging=True;database=xxxxxxxxxx_sec" providerName="MySql.Data.MySqlClient" />
<add name="'LocalSqlServer" connectionString="server=localhost;database=xxxxxxxxxx_CUS;
logging=True;password=xxxxxxxxxx;User Id=xxxxxxxxxxER" providerName="MySql.Data.MySqlClient" />

<remove name="LocalSqlServer" />
<add name="p10009307_cusConnectionString" connectionString="server=localhost;
User Id=xxxxxxxxxxER;password=xxxxxxxxxx;database=xxxxxxxxxx_CUS"
providerName="MySql.Data.MySqlClient" />
<add name="p10009307_cusConnectionString2" connectionString="server=localhost;
User Id=xxxxxxxxxER;password=xxxxxxxxxx;database=xxxxxxxxxx_CUS; 
SQL SERVER MODE=True" providerName="MySql.Data.MySqlClient" />

</connectionStrings>

<system.data>
   <DbProviderFactories>
     <add name="MySQL Data Provider" invariant="MySQL.Data.MySqlClient" 
     description=".Net Framework Data Provider for MySQL"
     type="MySQL.Data.MySqlClient.MySqlClientFactory, MySql.Data, 
     Version=6.4.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
  </DbProviderFactories>
</system.data>
<system.web>
    <customErrors mode="Off" />
    <compilation targetFramework="4.0" debug="true">
    <assemblies>
        <add assembly="MySql.Data, Version=6.4.4.0, Culture=neutral,
        PublicKeyToken=c5687fc88969c44d" />
    </assemblies>
    </compilation>
    <authorization>
        <allow roles="Admin" />
    </authorization>
    <authentication mode="Forms">
       <forms loginUrl="~/Account/Login.aspx" timeout="2880" />
    </authentication>
    <membership defaultProvider="MySQLMembershipProvider">
      <providers>
          <clear />
              <remove name="MySQLMembershipProvider" />
              <add name="MySQLMembershipProvider"
              type="MySql.Web.Security.MySQLMembershipProvider, 
              MySql.Web, Version=6.4.4.0, Culture=neutral, 
              PublicKeyToken=c5687fc88969c44d" applicationName="/" 
              description="Membership Provider" 
              connectionStringName="LocalMySqlServer" 
              writeExceptionsToEventLog="True" 
              autogenerateschema="True" 
              enablePasswordRetrieval="False" 
              enablePasswordReset="True" 
              requiresQuestionAndAnswer="False" 
              requiresUniqueEmail="False" passwordFormat="Clear" 
              maxInvalidPasswordAttempts="5" minRequiredPasswordLength="7"
              minRequiredNonalphanumericCharacters="1" passwordAttemptWindow="10"
              passwordStrengthRegularExpression="" />
      </providers>
    </membership>
<profile defaultProvider="MySQLProfileProvider">
  <providers>
    <clear />
    <remove name="MySQLProfileProvider" />
    <add name="MySQLProfileProvider" type="MySql.Web.Profile.MySQLProfileProvider, 
    MySql.Web, Version=6.4.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"
    applicationName="/" description="Profile provider" 
    connectionStringName="LocalMySqlServer" writeExceptionsToEventLog="False"
    autogenerateschema="True" />
 </providers>
</profile>
<roleManager enabled="true" defaultProvider="MySQLRoleProvider">
  <providers>
    <clear />
    <remove name="MySQLRoleProvider" />
    <add applicationName="/" description="Role Provider" connectionStringName="LocalMySqlServer"
    writeExceptionsToEventLog="True" autogenerateschema="True" name="MySQLRoleProvider"
    type="MySql.Web.Security.MySQLRoleProvider, MySql.Web, Version=6.4.4.0, Culture=neutral,
    PublicKeyToken=c5687fc88969c44d" />
 </providers>
</roleManager>
<sessionState mode="Custom" cookieless="true" regenerateExpiredSessionId="true"
customProvider="MySqlSessionStateProvider">
<providers>
    <add name="MySqlSessionStateProvider" type="MySql.Web.SessionState.MySqlSessionStateStore,
    MySql.Web, Version=6.4.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"
    applicationName="/" description="State Provider" connectionStringName="LocalMySqlServer"
    writeExceptionsToEventLog="True" autogenerateschema="True" />
</providers>
</sessionState></system.web>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
  <dependentAssembly>
    <assemblyIdentity name="MySql.Data" publicKeyToken="c5687fc88969c44d" />
    <bindingRedirect oldVersion="0.0.0.0-6.3.7.0" newVersion="6.4.4.0" />
  </dependentAssembly>
</assemblyBinding>
  </runtime>

</configuration>`

此时一切都在本地主机上运行我已将 DLL 放在 bin 目录中，我不知道我缺少什么。

Answer 1

我在该配置片段中没有看到任何内容告诉“MySQL 数据提供程序”要使用可用连接字符串中的哪一个。

代码中必须有一些东西告诉它连接字符串名称或连接字符串值。像这样:

System.Configuration.ConfigurationManager.ConnectionStrings["LocalSqlServer"].ConnectionString

此外，您的第二个连接字符串在其名称之前有一个单引号字符:'LocalSqlServer

也许您不小心添加了它，现在无法通过名称“LocalSqlServer”找到连接字符串(无论如何，如果这就是问题所在)。