mirror of
https://gitee.com/dotnetchina/OpenAuth.Net.git
synced 2025-05-10 23:58:02 +08:00
99 lines
3.1 KiB
Markdown
99 lines
3.1 KiB
Markdown
# 配置多数据库
|
||
|
||
框架支持同时访问多个数据库。具体操作如下：
|
||
|
||
## 添加新数据库连接字符串
|
||
|
||
在配置文件appsettings.json中，添加新的连接字符串`OpenAuthDBContext2`
|
||
|
||
```csharp
|
||
"ConnectionStrings": {
|
||
"OpenAuthDBContext": "Data Source=.;Initial Catalog=OpenAuthPro;User=sa;Password=000000",
|
||
"OpenAuthDBContext2": "Data Source=.;Initial Catalog=OpenAuthDB;User=sa;Password=000000"
|
||
}
|
||
"AppSetting": {
|
||
"DbTypes": {
|
||
"OpenAuthDBContext":"SqlServer" //数据库类型：SqlServer、MySql、Oracle
|
||
,"OpenAuthDBContext2":"SqlServer" //链接字符串OpenAuthDBContext2对应的数据库类型
|
||
}
|
||
}
|
||
```
|
||
|
||
## 添加新的数据上下文
|
||
|
||
在OpenAuth.Repository中添加新的数据库上下文，比如`OpenAuthDBContext2`
|
||
|
||
```csharp
|
||
public class OpenAuthDBContext2 : DbContext
|
||
{
|
||
private IConfiguration _configuration;
|
||
private ILoggerFactory _LoggerFactory;
|
||
private const string _connectstr = "OpenAuthDBContext2";
|
||
|
||
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
|
||
{
|
||
optionsBuilder.UseLoggerFactory (_LoggerFactory);
|
||
|
||
string connect = _configuration.GetConnectionString(_connectstr);
|
||
if (string.IsNullOrEmpty(connect))
|
||
{
|
||
throw new Exception($"未能找到{_connectstr}对应的连接字符串信息");
|
||
}
|
||
|
||
//这个地方如果用IOption，在单元测试的时候会获取不到AppSetting的值😅
|
||
var dbtypes = _configuration.GetSection("AppSetting:DbTypes").GetChildren()
|
||
.ToDictionary(x => x.Key, x => x.Value);
|
||
|
||
var dbType = dbtypes[_connectstr];
|
||
if (dbType == Define.DBTYPE_SQLSERVER)
|
||
{
|
||
optionsBuilder.UseSqlServer(connect);
|
||
}
|
||
else if(dbType == Define.DBTYPE_MYSQL) //mysql
|
||
{
|
||
optionsBuilder.UseMySql(connect);
|
||
}
|
||
else
|
||
{
|
||
optionsBuilder.UseOracle(connect);
|
||
}
|
||
|
||
base.OnConfiguring (optionsBuilder);
|
||
}
|
||
|
||
public OpenAuthDBContext2(DbContextOptions<OpenAuthDBContext2> options,
|
||
ILoggerFactory loggerFactory,IConfiguration configuration)
|
||
: base(options)
|
||
{
|
||
_LoggerFactory = loggerFactory;
|
||
_configuration = configuration;
|
||
}
|
||
|
||
... //其他代码请参考OpenAuthDbContext
|
||
}
|
||
|
||
```
|
||
|
||
## 注入新数据库
|
||
|
||
在项目（OpenAuth.WebApi等）的启动代码`Startup.cs`中，注入刚刚添加的数据库
|
||
|
||
```csharp
|
||
services.AddDbContext<OpenAuthDBContext2>();
|
||
```
|
||
|
||
## 编写业务代码
|
||
|
||
我们以系统日志模块为例，只需要调整以下代码，然后运行就可以发现，日志已经全部记录到新的数据库中。
|
||
|
||
```csharp
|
||
public class SysLogApp : BaseApp<SysLog,OpenAuthDBContext2>
|
||
{
|
||
public SysLogApp(IUnitWork<OpenAuthDBContext2> unitWork, IRepository<SysLog,OpenAuthDBContext2> repository) : base(unitWork, repository, null)
|
||
{
|
||
}
|
||
|
||
...//剩余的代码和系统自带的模块完全一致
|
||
}
|
||
```
|