今天我们来学习怎么读取dotnet core程序的配置文件.
一般dotnet core配置文件都位于项目目录下,名为appsettings.json
{
"MySQLConnectionString": "server=mysql地址;port=端口号;database=数据库名字;uid=账号;pwd=密码;charset='utf-8';Allow User Variables=True;Connection Timeout=30;SslMode=None;",
"RedisConnectionString": "redis数据库地址:端口,name=名字,keepAlive=1800,syncTimeout=10000,connectTimeout=360000,password=访问密码,ssl=False,abortConnect=False,responseTimeout=360000,defaultDatabase=1",
"EmailAccount": "QQ邮箱账号",
"EmailPassword": "QQ邮箱密码",
"EmailSMTPDomain": "smtp.qq.com",
"EmailSMTPPort": 587,
"SenderAddress": "QQ邮箱账号",
"ReceiverAddress": "QQ邮箱账号",
"ReceiverName": "liguobao-test",
"EncryptionConfigCIV": "加密向量,16个16进制数字",
"EncryptionConfigCKEY": "加密秘钥,16个16进制数字",
"ESURL":"http://127.0.0.1:9201/",
"ESUserName":"",
"ESPassword":"",
"QQAPPID":"",
"QQAPPKey":"",
"QQAuthReturnURL":""
}
那么我们直接去读json然后序列化成对象是不是就可以了.
没毛病,确实是可以这样玩的. 代码大概是这样的…
public class AppSettings
{
public string MySQLConnectionString {get;set;}
public string RedisConnectionString {get;set;}
// ....
}
public AppSettings JsonHelper(string jsonFilePath)
{
_movieJsonFilePath = jsonFilePath;
if (!File.Exists(jsonFilePath))
{
var pvFile = File.Create(jsonFilePath);
pvFile.Flush();
pvFile.Dispose();
return;
}
using (var stream = new FileStream(jsonFilePath, FileMode.OpenOrCreate))
{
try
{
StreamReader sr = new StreamReader(stream);
JsonSerializer serializer = new JsonSerializer
{
NullValueHandling = NullValueHandling.Ignore,
Converters = { new JavaScriptDateTimeConverter() }
};
//构建Json.net的读取流
using (var reader = new JsonTextReader(sr))
{
return serializer.Deserialize<AppSettings>(reader);
}
}
catch (Exception ex)
{
return null;
}
}
}
直接读文件然后反序列化实在有点麻烦,有没有简单点的办法啊.
客官,只要给钱什么都有.
直接上代码:
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
var mySQLConnectionString = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json").Build()["MySQLConnectionString"];
// ConnectionStrings节点下的MySQLConnectionString
// var mySQLConnectionString = new ConfigurationBuilder()
// .SetBasePath(Directory.GetCurrentDirectory())
// .AddJsonFile("appsettings.json").Build()["ConnectionStrings:MySQLConnectionString"];
}
嗯,就是这么简单粗暴,什么都不管…
辣鸡,还有没有更优雅点的方法啊.
哦,这样的要求么?那么我们上DI(自动注入)吧.
//Startup.cs
public IConfiguration Configuration { get; }
public Startup(IHostingEnvironment env)
{
//够赞
var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
Configuration = builder.Build();
}
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
//将Configuration注入到APPConfiguration实例中
services.AddOptions().Configure<AppSettings>(Configuration);
}
然后我们在Controller中使用构造函数注入的方式获取APPConfiguration实例
private AppSettings configuration;
public AccountController(IOptions<AppSettings> configurationOption)
{
this.configuration = configurationOption.Value;
}
然后就可以愉快的使用了.
本文结束…
拜…