WYcolorful
To be better me

由于项目需要,做的c#客户端数据库连接串首先肯定不能写死的程序里(数据库很容易被攻击,我们的项目半年改了几次密码。。。)

放置在配置文件内,都可以看得到,最开始想法将配置文件加密,老师说加密过的文件还是不安全。。。。。

最后的方法就是c#这边调用java的api返回连接串(它们那边做了不知道什么权限的)使用的HttpRequest,一下是postman里的结果(两个入参用于实现每次请求的校验)

在网上找了一段代码做个demo单个参数是成功执行。。。

下面是我的修改后代码

 try {
                    HttpWResp = (HttpWebResponse)myReq.GetResponse();
                } catch (WebException ex) {
                    HttpWResp = (HttpWebResponse)ex.Response;
                }

这段代码可以让你看到你的错误,返回的结果是什么,例如

返回下面的这部分东西,加上上面那句话,错误可以看到。。。

 

一般的错误就是

HttpWResp = (HttpWebResponse)myReq.GetResponse();  出现异常,出现异常的原因最可能是参数出现问题(如果url有效且create成功了)
插入一下request的几种方式

application/x-www-form-urlencoded    一般参数就是拼接的形式a=A&b=B....

application/json     参数就是以json的形式被发送 var data = {'title':'test''sub' : [1,2,3]};

我自己出现的问题就是两个入参的时候用的type是

application/x-www-form-urlencoded   所以我以为入参的形式就是a=A&b=B...还甚至认为是没加双引号的问题

string strRequestData = "{A:5800a00d00000000, B: 1901234567891193}";最后将入参改成了这种形式就好了

(其实这里很疑惑,用的入参类型和入参方式不匹配,明明应该是拼接的参数啊。。。。。。。。。。。。)


private static string Post(string strUrl, string paramA, string paramB)
        {

            StringBuilder responseData = new StringBuilder();

            Encoding code = Encoding.GetEncoding("UTF-8");
            //待请求参数数组字符串
            //string strRequestData = HttpUtility.UrlEncode("A", code) + "=" + HttpUtility.UrlEncode(paramA, code) + "&" + HttpUtility.UrlEncode("B", code) + "=" + HttpUtility.UrlEncode(paramB, code);

            //string strRequestData = "companyName=" + Uri.EscapeDataString(companyName);
            //string strRequestData = "{A=" + paramA + "&" + "B=" + paramB + "}";
            string A = "5800a00d00000000";
            string B = "1901234567891193";
            //string strRequestData = "A="  + A + "&" + "B=" + B;
            string strRequestData = "{A:5800a00d00000000, B: 1901234567891193}";
        //string strRequestData = { "A":"5800a00d00000000","A":"5800a00d00000000"};
        //string strRequestData = HttpUtility.UrlEncode("companyName", code) + "=" + HttpUtility.UrlEncode("969325639000980000000001", code);
        //把数组转换成流中所需字节数组类型
        byte[] bytesRequestData = Encoding.UTF8.GetBytes(strRequestData);
            //byte[] bytesRequestData = encoding.GetBytes(strRequestData);
            //构造请求地址
            string strResult = "";
            //请求远程HTTP
            
            try {
                //设置HttpWebRequest基本信息
                HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(strUrl);
                myReq.Timeout = 5000;
                myReq.Method = "post";
                myReq.ContentType = "application /x-www-form-urlencoded";

                //填充POST数据
                myReq.ContentLength = bytesRequestData.Length;
                Stream requestStream = myReq.GetRequestStream();
                requestStream.Write(bytesRequestData, 0, bytesRequestData.Length);
                requestStream.Close();

                //发送POST数据请求服务器
                HttpWebResponse HttpWResp; 

                try {
                    HttpWResp = (HttpWebResponse)myReq.GetResponse();
                } catch (WebException ex) {
                    HttpWResp = (HttpWebResponse)ex.Response;
                }

                Stream myStream = HttpWResp.GetResponseStream();

                //获取服务器返回信息
                StreamReader reader = new StreamReader(myStream, code);
                
                String line;
                while ((line = reader.ReadLine()) != null) {
                    responseData.Append(line);
                }
                myReq.KeepAlive = false;
                //释放
                myStream.Close();

                strResult = responseData.ToString();
            } catch (Exception exp) {
                strResult = "报错:" + exp.Message;
            }
            return responseData.ToString();
        }

 

posted on 2016-08-30 17:09  WYcolorful  阅读(702)  评论(0编辑  收藏  举报