c#和JS字符串format实现(可实现JSON对象，c#实体对象，C#匿名对象，替换)

Posted 2022-06-15

首先看一下JS实现方法，此方法在网上找的，具体地址忘了，代码如下：

String.prototype.format= function () 
        if (arguments.length == 0) return this;
        var param = arguments[0];
        var s = this;
        if (typeof (param) == ‘object‘) 
            for (var key in param)
                s = s.replace(new RegExp("\\" + key + "\\", "g"), param[key]);
            return s;
         else 
            for (var i = 0; i < arguments.length; i++)
                s = s.replace(new RegExp("\\" + i + "\\", "g"), arguments[i]);
            return s;
        
    

javascript调用：

var str = "js实现用two自符串替换占位符two three  one ".format(one: "I",two: "LOVE",three: "YOU");
var str2 = "js实现用1自符串替换占位符1 2  0 ".format("I","LOVE","YOU");

2.C#后台实现代码，下面方法自己写的；

        /// <summary>
        /// 字符串格式占位替换
        /// </summary>
        /// <param name="str">字符串</param>
        /// <param name="obj">替换对象（T,匿名对象，Newtonsoft.Json.Linq.JObject）</param>
        /// <returns></returns>
        public static string Format(string str, object obj)
        
            if (str.Length == 0)
            
                return str;
            
            string s = str;
            if (obj.GetType().Name == "JObject")
            
                foreach (var item in (Newtonsoft.Json.Linq.JObject)obj)
                
                    var k = item.Key.ToString();
                    var v = item.Value.ToString();
                    s = Regex.Replace(s, "\\" + k + "\\", v, RegexOptions.IgnoreCase);
                
            
            else
            
                foreach (System.Reflection.PropertyInfo p in obj.GetType().GetProperties())
                
                    var xx = p.Name;
                    var yy = p.GetValue(obj).ToString();
                    s = Regex.Replace(s, "\\" + xx + "\\", yy, RegexOptions.IgnoreCase);
                
            
            return s;
        

c#调用方法：

 string ssew = "one:‘I‘,two: ‘LOVE‘,three: ‘YOU‘";
            Newtonsoft.Json.Linq.JObject o2 = Newtonsoft.Json.Linq.JObject.Parse(ssew);
            string sew = CommonFunc.Format("ONE TWO three  ", o2);

            var ste = new  one = "I", two = "LOVE", three = "You" ;
            string ese = CommonFunc.Format("ONE TWO three  ", ste);