c# - 将 Json 回传数据转换为 XML
问题描述
这是我的第一个网络应用项目。我正在为我的视图模型使用 VS 社区、asp.net、bootstrap 4、C# 和 JS 淘汰赛,服务器端数据来自使用实体框架的公司 ERP SQL 数据库。
这个想法是,用户从公司 ERP 系统中接收要批准的项目列表,这些项目被加载到视图模型中。View Model 的结构是一个 JS Knockout observable 数组,每个项目都是一个 JS 淘汰项目 observables(见下面的完整代码)
一旦用户根据需要处理了项目,我希望 Web 应用程序将整个 View Modal 作为 Json 对象回发,并让服务器 Post Controller 将此 Json 对象转换为 xml 以发送到 SQL 存储过程以进行插入进入 SQL 数据库,从 SQL 数据库中处理数据并插入到 ERP 数据库中
当我尝试对帖子执行操作时,我收到 405“不允许的方法”
> "tags": {
"ai.cloud.roleInstance": "[MYCOMPUTER].local",
"ai.operation.id": "c07680cd8c845240a9e3791018c39521",
"ai.operation.name": "POST ReqsTests",
"ai.location.ip": "::1",
"ai.internal.sdkVersion": "web:2.8.0-241",
"ai.internal.nodeName": "[MYCOMPUTER].local"
},
"data": {
"baseType": "RequestData",
"baseData": {
"ver": 2,
"id": "|c07680cd8c845240a9e3791018c39521.66f8d951_",
"name": "POST ReqsTests",
"duration": "00:00:00.0279394",
"success": false,
"responseCode": "405",
"url": "http://localhost:64234/api/ReqsTests/",
"properties": {
"DeveloperMode": "true",
"_MS.ProcessedByMetricExtractors": "(Name:'Requests', Ver:'1.1')"
}
}
}
}
我认为我没有正确收到来自客户端的 Json 日期。我的想法是因为我将整个模型发回,这是一个 Json 列表,但我的控制器不接收列表而是字符串。
任何人都可以解释我的控制器应该如何接收客户端数据这是我从客户端和服务器对我的控制器的调用 Post 控制器和完整的代码清单如下
self.postAllReqs = function(self) {
self.error(''); // Clear error message
var data = ko.toJSON(self.Reqs); // convert to json
console.log(data);
ajaxHelper(reqsUri, 'POST', data).fail(function (jqXHR, textStatus, errorThrown) {
self.error(errorThrown);
});
}
// POST: api/ReqsTests
public IHttpActionResult PostReqsTest(string json)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
XmlDocument doc = JsonConvert.DeserializeXmlNode(json);
try
{
//SQL store procedure
SqlParameter param1 = new SqlParameter("@XmlIn", doc);
db.Database.ExecuteSqlCommand("exec [CHC_Web].[TestWebHandShake],@XmlIn",
param1);
}
catch (Exception e)
{
string message = e.Message;
return ResponseMessage(Request.CreateErrorResponse(HttpStatusCode.InternalServerError, message));
}
return Ok();
}
谢谢
查看型号代码
function ReqsTest(rt) {
rt = rt || {};
var self = this;
self.id = ko.observable(rt.ID || 0);
self.requisition = ko.observable(rt.Requisition || "");
self.reqnStatus = ko.observable(rt.ReqnStatus || "");
self.dateReqnRaised = ko.observable(rt.DateReqnRaised|| null);
self.reqnValue = ko.observable(rt.ReqnValue || null);
self.approvedValue = ko.observable(rt.ApprovedValue || null);
self.originator = ko.observable(rt.Originator || "");
self.origName = ko.observable(rt.OrigName || "");
self.origEmail = ko.observable(rt.OrigEmail || "");
self.line = ko.observable(rt.Line || 0.00);
self.indx = ko.observable(rt.INDX || 0);
self.dateReqnRaisedL = ko.observable(rt.DateReqnRaisedL || null);
self.reqStatus = ko.observable(rt.ReqStatus || "");
//self.reqBackground = ko.observable(rt.ReqBackground || "");
//Computed observables
self.reqBackground = ko.computed(function () {
// get variable
var status = self.reqStatus();
if (status == "A") { return "card-heading bg-success text-white"; }
else if (status == "D") { return "card heading bg-secondary"; }
else if (status == "R") { return "card heading bg-warning"; }
else if (status == "E") { return "card heading bg-danger"; }
else {
return "card-heading bg-primary text-white";
}
})
self.reqStatusLabel = ko.computed(function () {
// get variable
var status = self.reqStatus();
if (status == "A") { return "Approved"; }
else if (status == "D") { return "Declined - put on hold"; }
else if (status == "R") { return "Routing On"; }
else if (status == "E") { return "Erase On Syspro"; }
else {
return "Awaiting Approval";
}
})
self.approvalBtn = ko.computed(function () {
// get variable
var status = self.reqStatus();
if (status == "A") { return "css: button btn-secondary "; }
else {
return "btn btn-success ";
}
})
self.approvalBtnLbl = ko.computed(function () {
// get variable
var status = self.reqStatus();
if (status == "W") { return "Approve"; }
else {
return "UnApprove";
}
})
self.declineBtnLbl = ko.computed(function () {
// get variable
var status = self.reqStatus();
if (status == "D") { return "UnDecline"; }
else {
return "Decline";
}
})
self.deleteBtnLbl = ko.computed(function () {
// get variable
var status = self.reqStatus();
if (status == "E") { return "Restore"; }
else {
return "Erase";
}
})
// Functions
//show details alert
$(".btn").on("click", function () {
$(".alert").removeClass("in").show();
$(".alert").delay(200).addClass("in").fadeOut(2000);
});
}
function ReqsViewModel (){
var self = this;
self.Reqs = ko.observableArray([]);
self.error = ko.observable();
var reqsUri = '/api/ReqsTests/';
function ajaxHelper(uri, method, data) {
self.error(''); // Clear error message
return $.ajax({
type: method,
url: uri,
dataType: 'json',
contentType: 'application/json',
data: data ? JSON.stringify(data) : null
}).fail(function (jqXHR, textStatus, errorThrown) {
self.error(errorThrown);
});
}
function getAllReqs() {
ajaxHelper(reqsUri, 'GET').done(function (data) {
// Build the ReqsTest objects
var reqs = ko.utils.arrayMap(data, function (rt) {
return new ReqsTest(rt);
});
self.Reqs(reqs);
});
}
self.postAllReqs = function(self) {
self.error(''); // Clear error message
var data = ko.toJSON(self.Reqs); // convert to json
console.log(data);
ajaxHelper(reqsUri, 'POST', data).fail(function (jqXHR, textStatus, errorThrown) {
self.error(errorThrown);
});
}
// Details
self.detail = ko.observable();
self.getReqDetail = function (item) {
//var url = reqsUri + item.indx();
//ajaxHelper(url, 'GET').done(function (data) {
// self.detail(data);
//}
//);
self.detail(item)
}
//Approval function
self.Approval = function (item) {
var status = item.reqStatus();
if (status == "W") { item.reqStatus("A"); }
else
{ item.reqStatus("W"); }
self.getReqDetail(item);
}
//Decline function
self.Decline = function (item) {
var status = item.reqStatus();
if (status == "D") { item.reqStatus("W"); }
else { item.reqStatus("D"); }
self.getReqDetail(item);
}
//Delete function
self.Delete = function (item) {
var status = item.reqStatus();
if (status == "E") { item.reqStatus("W"); }
else { item.reqStatus("E"); }
self.getReqDetail(item);
}
// Load the reqs - Take this out if you don't want it
getAllReqs();
}
ko.applyBindings(new ReqsViewModel());
模型类
namespace POC_Reqs_v1.Models
{
using System;
using System.Collections.Generic;
public partial class ReqsTest
{
public string ID { get; set; }
public string Requisition { get; set; }
public string ReqnStatus { get; set; }
public Nullable<System.DateTime> DateReqnRaised { get; set; }
public Nullable<decimal> ReqnValue { get; set; }
public Nullable<decimal> ApprovedValue { get; set; }
public string Originator { get; set; }
public string OrigName { get; set; }
public string OrigEmail { get; set; }
public decimal Line { get; set; }
public long INDX { get; set; }
public string DateReqnRaisedL { get; set; }
public string ReqStatus { get; set; }
public string ReqBackground { get; set; }
}
}
控制器代码
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using System.Web.Http;
using System.Web.Http.Description;
using System.Xml;
using Newtonsoft.Json;
using POC_Reqs_v1.Models;
namespace POC_Reqs_v1.Controllers
{
public class ReqsTestsController : ApiController
{
private ChamberlinWebEntities db = new ChamberlinWebEntities();
// GET: api/ReqsTests
public IQueryable<ReqsTest> GetReqsTests()
{
return db.ReqsTests;
}
// GET: api/ReqsTests/5
[ResponseType(typeof(ReqsTest))]
public async Task<IHttpActionResult> GetReqsTest(string id)
{
var ID = Convert.ToInt64(id);
ReqsTest reqsTest = await db.ReqsTests.FindAsync(ID);
if (reqsTest == null)
{
return NotFound();
}
return Ok(reqsTest);
}
// PUT: api/ReqsTests/5
[ResponseType(typeof(void))]
public async Task<IHttpActionResult> PutReqsTest(string id, ReqsTest reqsTest)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
if (id != reqsTest.ID)
{
return BadRequest();
}
db.Entry(reqsTest).State = EntityState.Modified;
try
{
await db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!ReqsTestExists(id))
{
return NotFound();
}
else
{
throw;
}
}
return StatusCode(HttpStatusCode.NoContent);
}
// POST: api/ReqsTests
public IHttpActionResult PostReqsTest(string json)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
XmlDocument doc = JsonConvert.DeserializeXmlNode(json);
try
{
//SQL store procedure
SqlParameter param1 = new SqlParameter("@XmlIn", doc);
db.Database.ExecuteSqlCommand("exec [CHC_Web].[TestWebHandShake],@XmlIn",
param1);
}
catch (Exception e)
{
string message = e.Message;
return ResponseMessage(Request.CreateErrorResponse(HttpStatusCode.InternalServerError, message));
}
return Ok();
}
// DELETE: api/ReqsTests/5
[ResponseType(typeof(ReqsTest))]
public async Task<IHttpActionResult> DeleteReqsTest(string id)
{
ReqsTest reqsTest = await db.ReqsTests.FindAsync(id);
if (reqsTest == null)
{
return NotFound();
}
db.ReqsTests.Remove(reqsTest);
await db.SaveChangesAsync();
return Ok(reqsTest);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
db.Dispose();
}
base.Dispose(disposing);
}
private bool ReqsTestExists(string id)
{
return db.ReqsTests.Count(e => e.ID == id) > 0;
}
}
}
解决方案
为了完整起见,这是我的最终解决方案:主要问题是后控制器中的语法错误,编译时没有产生错误,不正确的行是
// POST: api/ReqsTests
public IHttpActionResult PostReqsTest(string json)
正确的语法在最后
public async Task<IHttpActionResult> PostReqsTest(object json)
所以完整的控制器代码是
// POST: api/ReqsTests
public async Task<IHttpActionResult> PostReqsTest(object json)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
//convert the Json model to xml
XmlDocument doc = JsonConvert.DeserializeXmlNode(json.ToString());
try
{
//SQL store procedure
SqlParameter param1 = new SqlParameter("@XmlIn", doc.InnerXml);
db.Database.ExecuteSqlCommand("exec [CHC_Web].[TestWebHandShake] @XmlIn",
param1);
}
catch (Exception e)
{
string message = e.Message;
return ResponseMessage(Request.CreateErrorResponse(HttpStatusCode.InternalServerError, message));
}
return ResponseMessage(Request.CreateResponse HttpStatusCode.OK,"Inserted to database")); }
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