标签：soft ipa limits close serialize dir pen local 改进
Api服务代码一：
/// <summary> /// 服务器接收接口 /// </summary> [HttpPost] [Route("ReceiveFile")] public HttpResponseMessage ReceiveFile() { string result = string.Empty; ArrayList list = new ArrayList(); try { Stream postStream = HttpContext.Current.Request.InputStream; byte[] b = new byte[postStream.Length]; string postFileName = DNTRequest.GetString("fileName"); if (string.IsNullOrEmpty(postFileName) && HttpContext.Current.Request["fileName"] != null) { postFileName = HttpContext.Current.Request["fileName"]; } string fileExtension = Path.GetExtension(postFileName); string dirName = "other"; if (!string.IsNullOrEmpty(fileExtension)) { dirName = fileExtension.Substring(fileExtension.LastIndexOf(".") + 1); } string dir = "/_temp/file/" + dirName + "/" + DateTime.Now.ToString("yyyyMMdd") + "/"; string fileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff"); fileName += fileExtension; string filePath = HttpContext.Current.Server.MapPath(dir); string saveFilePath = Path.Combine(filePath, fileName); string dirPath = dir + fileName; list.Add(dirPath); if (!Directory.Exists(filePath)) { Directory.CreateDirectory(filePath); } FileStream fs = new FileStream(saveFilePath, FileMode.Create); byte[] new_b = new byte[1024]; const int rbuffer = 1024; while (postStream.Read(new_b, 0, rbuffer) != 0) { fs.Write(new_b, 0, rbuffer); } postStream.Close(); fs.Close(); fs.Dispose(); if (list.Count > 0) { result = DNTRequest.GetResultJson(true, "success", string.Join(",", list.ToArray())); } } catch (Exception ex) { result = DNTRequest.GetResultJson(false, ex.Message, null); } HttpResponseMessage responseMessage = new HttpResponseMessage { Content = new StringContent(result, Encoding.GetEncoding("UTF-8"), "text/plain") }; return responseMessage; }
Api服务代码二：
[HttpPost] [Route("ReceiveFileTest")] public HttpResponseMessage ReceiveFileTest() { string result = string.Empty; var request = HttpContext.Current.Request; try { if (request.Files.Count > 0) { var fileNameList = new List<string>(); string dirName = "other"; foreach (string f in request.Files) { var file = request.Files[f]; string fileExtension = Path.GetExtension(file.FileName).ToLower(); string fileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff"); fileName += fileExtension; if (!string.IsNullOrEmpty(fileExtension)) { dirName = fileExtension.Substring(fileExtension.LastIndexOf(".") + 1); } string dir = "/_temp/file/" + dirName + "/" + DateTime.Now.ToString("yyyyMMdd") + "/"; string filePath = HttpContext.Current.Server.MapPath(dir); if (!Directory.Exists(filePath)) { Directory.CreateDirectory(filePath); } string fileSavePath = Path.Combine(filePath, fileName); Stream postStream = file.InputStream; // FileStream fs = new FileStream(fileSavePath, FileMode.Create); byte[] new_b = new byte[1024]; const int rbuffer = 1024; while (postStream.Read(new_b, 0, rbuffer) != 0) { fs.Write(new_b, 0, rbuffer); } postStream.Close(); fs.Close(); fs.Dispose(); string dirPath = dir + fileName; fileNameList.Add(dirPath); fileNameList.Add(fileName); } result = DNTRequest.GetResultJson(true, string.Format("{0}:{1}", HttpStatusCode.OK, string.Join(",", fileNameList.ToArray())), null); } else { result = DNTRequest.GetResultJson(false, "请选择上传的文件", null); } } catch (Exception ex) { result = DNTRequest.GetResultJson(false, ex.Message, null); } HttpResponseMessage responseMessage = new HttpResponseMessage { Content = new StringContent(result, Encoding.GetEncoding("UTF-8"), "text/plain") }; return responseMessage; }
Ajax提交file代码，调用Api代码一的Script：
此方法后端Api代码一中始终获取不到文件名，所以我在Ajax的url中加了?fileName=fileObj.name，这样调试能走通。为什么Ajax提交时不能获取到文件名，我还在研究。
<script>
$("#inpSubmit").click(function () {
//var fileObj = new FormData($("#importModel")[0]);
var fileObj = document.getElementById("inpFileControl").files[0];
if (typeof (fileObj) == "undefined" || fileObj.size <= 0) {
alert("请选择文件");
return;
}
//console.log(fileObj);
var formFile = new FormData();
formFile.append("fileName", fileObj.name);
formFile.append("file", fileObj);
//console.log(JSON.stringify(formFile));
//var paramters = {};
//paramters.timestamp = new Date().getTime();
//paramters.fileName = fileObj.name;
//paramters.file = fileObj;
//console.log(JSON.stringify(paramters));
$.ajax({
type: "post",
url: "http://localhost:19420/Api/ReceiveFile?fileName=" + fileObj.name,
dataType: "json",
//contentType: false,
processData: false,//用于对data参数进行序列化处理，默认值是true。默认情况下发送的数据将被转换为对象，如果不希望把File转换，需要设置为false
cache: false,
data: fileObj,
success: function (json) {
if (json.result) {
$("#inpFileUrl").val(json.data);
console.log(json.data);
}
else {
alert(json.msg);
}
},
error: function (ret) {
console.log(ret.responseText);
}
});
return false;
});
</script>
Ajax提交file代码，调用Api代码一的Html：
<form>
<fieldset>
<legend>Ajax提交到远程服务器Api</legend>
<div class="form-group">
<label class="col-sm-2 control-label" for="ds_host">选择文件</label>
<div class="col-sm-4">
<input class="form-control" id="inpFileUrl" name="inpFileUrl" type="text" placeholder="上传后返回地址" />
</div>
<div class="col-sm-4">
<input type="file" id="inpFileControl" name="file" />
</div>
<div class="col-sm-2">
<input id="inpSubmit" name="inpSubmit" type="button" value="提交" />
</div>
</div>
</fieldset>
</form>
Form表单提交Post到远程Api代码二中，这个很顺利。下边是Html
<form action="http://localhost:19420/Api/ReceiveFileTest" method="post" enctype="multipart/form-data"> <fieldset> <legend>Form表单提交到远程服务器Api</legend> <div class="form-group"> <label class="col-sm-2 control-label" for="ds_host">选择文件</label> <div class="col-sm-4"> <input class="form-control" id="inpFileUrl2" name="inpFileUrl2" type="text" placeholder="上传后返回地址" /> </div> <div class="col-sm-4"> <input type="file" name="file" /> </div> <div class="col-sm-2"> <input type="submit" value="提交" /> </div> </div> </fieldset> </form>
Api服务部署时需要考虑到客户端提交file时有跨域问题，快捷方法是在IIS中设置Access-Control-Allow-Origin:*，但这样做有安全问题。
网站上传文件大小默认4M，所以网站配置文件中需要设置，如下：
<system.web>
<httpRuntime maxRequestLength="409600" />
</system.web>
服务器IIS上传文件大小也有限制，也要做设置，如下：
<system.webServer>
<security>
<requestFiltering>
<!--2G/2072576000|500M/518144000-->
<requestLimits maxAllowedContentLength="518144000"/>
</requestFiltering>
</security>
</system.webServer>
以上是我近2天的研究成果，不算完善还需要改进。
Api中使用了三方框架RestSharp，请在解决方案中找NuGet添加。
外部操作类用到的方法有，一：
/// <summary> /// 拼装JSON /// </summary> static public string GetResultJson(bool result, string msg, Object data) { string resultJson = string.Empty; Hashtable ht = new Hashtable(); try { ht.Add("result", result); ht.Add("msg", msg); ht.Add("data", data); } catch (Exception ex) { ht.Add("result", false); ht.Add("msg", ex.Message); } resultJson = Newtonsoft.Json.JsonConvert.SerializeObject(ht); return resultJson; }
注意：Html代码中file控件需要有name=“file”属性，否则提交后Api获取不到file对象，如下。
<input type="file" name="file" />
第三种方法是form表单提交调用mvc的control，control在调用Api代码二，这个测试失败，能上传文件，但上传的文件不能打开是损坏的，正在想办法解决。
下边是第三种方法的Html代码：
<form action="/Test/UploadFileTest" method="post" enctype="multipart/form-data"> <fieldset> <legend>Form表单提交到本地Control</legend> <div class="form-group"> <label class="col-sm-2 control-label" for="ds_host">选择文件</label> <div class="col-sm-4"> <input class="form-control" id="inpFileUrl3" name="inpFileUrl3" type="text" placeholder="上传后返回地址" /> </div> <div class="col-sm-4"> <input type="file" name="file" /> </div> <div class="col-sm-2"> <input type="submit" value="提交" /> </div> </div> </fieldset> </form>
下边是第三种方法的Control代码：
[HttpPost] public ActionResult UploadFileTest() { string result = string.Empty; string apiUrl = "http://localhost:19420/Api/ReceiveFileTest"; string contentType = "application/octet-stream"; var files = new List<string>(); foreach (string f in Request.Files) { var file = Request.Files[f]; var request = new RestRequest(Method.POST); request.AlwaysMultipartFormData = true; //request.AddParameter("fileName", file.FileName); Stream postStream = file.InputStream; byte[] b = new byte[postStream.Length]; request.AddFile("file", b, file.FileName, contentType); var restClient = new RestClient { BaseUrl = new Uri(apiUrl) }; string res = string.Empty; IRestResponse<Object> response = restClient.Execute<Object>(request); if (response.StatusCode == HttpStatusCode.OK) { res = response.Content; } else { res = string.Format("{0}:{1}", response.StatusCode, response.Content); } files.Add(res); } if (files.Count > 0) { result = string.Join(",", files.ToArray()); } return Json(result); }
标签：soft ipa limits close serialize dir pen local 改进
原文地址：https://www.cnblogs.com/hofmann/p/10757268.html
