[英]Read environment variables from web.config in Asp.Net Core
这是我的web.config文件:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.webServer>
<handlers>
<add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified"/>
</handlers>
<aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false">
<environmentVariables>
<environmentVariable name="TEST_WEBCONFIG_VARIABLE" value="some test webconfig variable value" />
</environmentVariables>
</aspNetCore>
</system.webServer>
</configuration>
如何从Startup.cs
web.config中读取TEST_WEBCONFIG_VARIABLE
?
我尝试了Configuration["TEST_WEBCONFIG_VARIABLE"]
,但是此变量在配置值列表中不存在。
可以肯定,您只需要致电:
对于单个设置: Environment.GetEnvironmentVariable("TEST_WEBCONFIG_VARIABLE");
对于设置列表: Environment.GetEnvironmentVariables().GetEnumerator();
因为您是从配置而不是AppSettings访问EnvironmentVariables
从Visual Studio运行时,请像下面这样使用launchSettings.json-
"profiles": {
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": true,
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development",
"TEST_WEBCONFIG_VARIABLE":"123"
}
},
"SamplePractice": {
"commandName": "Project",
"launchBrowser": true,
"launchUrl": "http://localhost:5000",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development",
"TEST_WEBCONFIG_VARIABLE":"123"
}
}
}
由于launchSettings.json仅限于Visual Studio,因此在发布版本的情况下,请像下面这样使用web.config-
<aspNetCore processPath="dotnet" arguments=".\MyAspNetCoreApplication.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false" >
<environmentVariables>
<environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
<environmentVariable name="TEST_WEBCONFIG_VARIABLE" value="123" />
</environmentVariables>
</aspNetCore>
并且此环境值将使用-在整个应用程序中读取
Environment.GetEnvironmentVariable("TEST_WEBCONFIG_VARIABLE");
注意! 仅在发布时有效。
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