ASP.NET mvc异常处理的方法示例介绍

1.首先常见保存异常的类（就是将异常信息写入到文件中去）

public class logmanager
{
private string logfilepath = string.empty;
public logmanager(string logfilepath)
{
this.logfilepath = logfilepath;
fileinfo file = new fileinfo(logfilepath);
if (!file.exists)
{
file.create().close();
}
}
public void savelog(string message, datetime writertime)
{
string log = writertime.tostring() + ":" + message;
streamwriter sw = new streamwriter(logfilepath, true);
sw.writeline(log);
sw.close();
}
}

2、控制器异常处理

这种方式就在需要进行异常处理的controller中重写onexception（）方法即可，因为它本身继承了iexceptionfilter接口

public class exceptioncontroller : controller
{
public actionresult index()
{
throw new exception("我抛出异常了！");
}
protected override void onexception(exceptioncontext filtercontext)
{
string filepath = server.mappath("~/exception。txt");
streamwriter sw = system.io.file.appendtext(filepath);
sw.writeline(datetime.now.tostring() + ":" + filtercontext.exception.message);
sw.close();
base.onexception(filtercontext);
redirect("/");
}
}

3、过滤器异常处理

namespace mymvc.controllers
{
public class exceptioncontroller : controller
{
[error]
public actionresult index()
{
throw new exception("过滤器异常！");
}
}
}
public class errorattribute : handleerrorattribute
{
public override void onexception(exceptioncontext filtercontext)
{
base.onexception(filtercontext);
string path = filtercontext.httpcontext.server.mappath("~/exception.txt");
streamwriter sw = system.io.file.appendtext(path);
sw.writeline(datetime.now.tostring()+":"+filtercontext.exception.message);
sw.close();
}
}