JAVA高级面试进阶训练营视频教程

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Exception 统一处理

using System;
using System.Collections.Generic;
using System.Text;

namespace WUtility.Common
{
    public class ActionHelper
    {
        private static Action<Exception> _dealException;
        public static event Action<Exception> DealException
        {
            add { _dealException += value; }
            remove { if (_dealException != null) _dealException -= value; }
        }

        /// <summary>
        /// 通用的异常处理
        /// </summary>
        /// <param name="action">对应事件逻辑</param>
        /// <param name="state">参数值</param>
        public static void SafeInvoke(Action<object> action, object state)
        {
            try
            {
                if (action == null) return;
                action.Invoke(state);
            }
            catch (Exception ex)//按异常类型区分处理
            {
                if (_dealException != null)
                    _dealException(ex);
            }
        }

        /// <summary>
        /// 通用的异常处理 
        /// </summary>
        /// <param name="method"></param>
        /// <param name="obj"></param>
        public static void SafeInvoke(Delegate method, params object[] obj)
        {
            try
            {
                if (method == null) return;
                if (obj.Length == 0)
                    method.DynamicInvoke(null);
                else if (obj.Length == 1)
                    method.DynamicInvoke(obj[0]);
                else if (obj.Length == 2)
                    method.DynamicInvoke(obj[0], obj[1]);
            }
            catch (Exception ex)//按异常类型区分处理
            {
                if (_dealException != null)
                    _dealException(ex);
            }
        }
    }
}

 

使用示例：

        private void button20_Click(object sender, EventArgs e)
        {
            ActionHelper.DealException += (obj) =>
            {
                var szInfo = obj.Message;
                MessageBox.Show(szInfo);
            };
            var k = 20 - 20;
            ActionHelper.SafeInvoke((obj) => { MessageBox.Show("SafeInvokeAcion" + (50 / k)); }, null);
        }

        private void button21_Click(object sender, EventArgs e)
        {
            ActionHelper.SafeInvoke(new TestInvoke(TestSafeInvokeDelegate), "12345", "678910");
        }

        private delegate void TestInvoke(string szInfo, string szInfo2);
        private void TestSafeInvokeDelegate(string szInfo, string szInfo2)
        {
            var info = szInfo + "^" + szInfo2;
            MessageBox.Show(info);
        }