webapi动态加载执行dll访问
无截图
using System;using System.Collections.Generic;using System.ComponentModel;using System.IO;using System.Linq;using System.Net;using System.Net.Http;using System.Reflection;using System.Web.Http;using System.Configuration;using System.Web;namespace MaxiTai.Demo.WebAPI{ public class RequestController : ApiController { /// <summary> /// 获取当前应用的路径下所有dll包含的命名空间 /// </summary> /// <param name="dllNames">指定的dll,多个按照|隔开</param> /// <returns></returns> [HttpPost] public object GetApi(InputModel input) { //var methName = "GetModel"; //var className = "Test"; //var namespaceName = "MaxiTai.Demo.BLL"; //object[] parameters = new object[] { "{'id':'1','name':'张三','age':18,'sex':'男'}" }; var methName = input.methName; var className = input.className; var namespaceName = input.namespaceName; object[] parameters = input.parameters == null ? new object[] { } : input.parameters; object result = null; try { object[] Iparameters = null; if (parameters != null && parameters.Length > 0 && parameters[0] != null) { Iparameters = new object[parameters.Length]; } var namespaceNameAssembly = Assembly.Load(namespaceName); if (namespaceNameAssembly != null) { var classes = namespaceNameAssembly.GetType(namespaceName "." className); if (classes != null) { object reflectTest = Activator.CreateInstance(classes); var Methods = classes.GetMethods(); var Method_list = Methods.Where(w => w.Name == methName).ToList(); //Type[] TypeList = new Type[parameters.Length]; MethodInfo Method = null; //for (int i = 0; i < parameters.Length; i ) //{ // TypeList[i] = parameters[i].GetType(); //} //MethodInfo Method = classes.GetMethod(methName, TypeList); ; if (Method_list.Count() == 1) { Method = Method_list.FirstOrDefault(w => w.Name == methName); } else if (Method_list.Count() > 1) { var SelectMethod = 0; var MethodIndex = 0; List<MethodInfo> SelectMethodList = new List<MethodInfo>(); for (int i = 0; i < Method_list.Count(); i ) { if (parameters.Length == Method_list[i].GetParameters().Count()) { SelectMethodList.Add(Method_list[i]); MethodIndex = i; SelectMethod ; } } if (SelectMethod == 1) { Method = Method_list[MethodIndex]; } else { for (int i = 0; i < SelectMethodList.Count; i ) { var parCount = 0; var pis = SelectMethodList[i].GetParameters(); for (int j = 0; j < pis.Count(); j ) { if (pis[j].ParameterType.Name == parameters[j].GetType().Name) { parCount ; } } if (parCount == pis.Count()) { Method = SelectMethodList[i]; break; } //var prType= typeof(); //piList[i].ParameterType.Name ; } } } if (Method != null) { var parametersType = Method.GetParameters(); for (int i = 0; i < parametersType.Length; i ) { if (parametersType[i].ParameterType.Namespace != "System") //不为系统参数 { var requestModel = ConvertObject(parameters[i], parametersType[i].ParameterType); System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer(); if (parameters[i] != null) { var deser = jss.Deserialize<Dictionary<string, object>>(parameters[i].ToString()); var resultProperties = requestModel.GetType().GetProperties(); foreach (var item in resultProperties) { foreach (var deserItem in deser.Keys) { if (item.Name == deserItem) { object deserValue = ""; deser.TryGetValue(deserItem, out deserValue); item.SetValue(requestModel, ConvertObject(deserValue, item.PropertyType)); } } } Iparameters[i] = requestModel; } } else //系统类型参数 { Iparameters[i] = ConvertObject(parameters[i], parametersType[i].ParameterType); } } result = new { result = Method.Invoke(reflectTest, Iparameters) }; } else { result = new { error = "方法名不存在", message = @"可能原因: 1.方法名不存在 2.方法被重载，参数不识别" }; } } else { result = new { error = "类名不存在" }; } } else { result = new { error = "命名空间不存在" }; } } catch (Exception ex) { result = new { error = "参数格式不正确", message = ex.Message, errorCode = "方法调用出错" }; // throw new Exception(ex.Message); } return result; } #region 将一个对象转换为指定类型 /// <summary> /// 将一个对象转换为指定类型 /// </summary> /// <param name="obj">待转换的对象</param> /// <param name="type">目标类型</param> /// <returns>转换后的对象</returns> private object ConvertObject(object obj, Type type) { if (type == null) return obj; if (obj == null) return type.IsValueType ? Activator.CreateInstance(type) : null; Type underlyingType = Nullable.GetUnderlyingType(type); if (type.IsAssignableFrom(obj.GetType())) // 如果待转换对象的类型与目标类型兼容，则无需转换 { return obj; } else if ((underlyingType ?? type).IsEnum) // 如果待转换的对象的基类型为枚举 { if (underlyingType != null && string.IsNullOrEmpty(obj.ToString())) // 如果目标类型为可空枚举，并且待转换对象为null 则直接返回 null值 { return null; } else { return Enum.Parse(underlyingType ?? type, obj.ToString()); } } else if (typeof(IConvertible).IsAssignableFrom(underlyingType ?? type)) // 如果目标类型的基类型实现了IConvertible，则直接转换 { try { return Convert.ChangeType(obj, underlyingType ?? type, null); } catch { return underlyingType == null ? Activator.CreateInstance(type) : null; } } else { TypeConverter converter = TypeDescriptor.GetConverter(type); if (converter.CanConvertFrom(obj.GetType())) { return converter.ConvertFrom(obj); } ConstructorInfo constructor = type.GetConstructor(Type.EmptyTypes); if (constructor != null) { object o = constructor.Invoke(null); PropertyInfo[] propertys = type.GetProperties(); Type oldType = obj.GetType(); foreach (PropertyInfo property in propertys) { PropertyInfo p = oldType.GetProperty(property.Name); if (property.CanWrite && p != null && p.CanRead) { property.SetValue(o, ConvertObject(p.GetValue(obj, null), property.PropertyType), null); } } return o; } } return obj; } #endregion } public class InputModel { public string namespaceName { get; set; } public string className { get; set; } public string methName { get; set; } public object[] parameters { get; set; } } public class FrameworkModels { public FrameworkModels() { className = new List<className>(); } public string namespaceName { get; set; } public List<className> className { get; set; } } public class className { public className() { methName = new List<string>(); } public string Name { get; set; } public List<string> methName { get; set; } }}
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