方法入口：

```javascript
initOData: function(){
         function mySuccessHandler(){
            debugger;
         }
         function myErrorHandler(){
            debugger;
         }
         var oModel = new ODataModel("http://localhost:8089/Northwind/Northwind.svc/");
         var oMetadata = oModel.getServiceMetadata();
         var result = oModel.getProperty("/Customer('ALFKI')/Address");
  var oContext = oModel.createEntry("/Customers", {
            properties : {Name : "Laptop X", Description:"New Laptop", Price:"1000", CurrencyCode : "USD"}
         debugger;
```

第一個引數為 entitySet 名稱，第二個引數為待建立的 entry payload：
![](https://img-blog.csdnimg.cn/img_convert/7ed2d8b880421ba2186aab7736a19fa6.png)

![](https://img-blog.csdnimg.cn/img_convert/2da7945526980bc544f0e4d9cea34208.png)

需要在 metadata 載入完畢之後，才能呼叫 createEntry 方法。

![](https://img-blog.csdnimg.cn/img_convert/4ab7f0a8eec6c8c971a60a7b752da6f3.png)

修改之後的程式碼：

```javascript
sap.ui.define([
    "sap/ui/core/UIComponent",
    "sap/ui/model/json/JSONModel",
    "sap/ui/model/resource/ResourceModel",
    "sap/ui/model/odata/v2/ODataModel"
 ], function (UIComponent, JSONModel, ResourceModel,ODataModel) {
    "use strict";

return UIComponent.extend("sap.ui5.walkthrough.Component", {
       metadata : {
          "interfaces": ["sap.ui.core.IAsyncContentCreation"],
          "rootView": {
             "viewName": "sap.ui5.walkthrough.view.App",
             "type": "XML",
             "id": "app"
          }
       },
       initOData: function(){
         function mySuccessHandler(){
            debugger;
         }
         function myErrorHandler(){
            debugger;
         }
         function myLoaded(oEvent){
            debugger;
            var oContext = oModel.createEntry("/Customers", {
            properties : {Name : "Laptop X", Description:"New Laptop", Price:"1000", CurrencyCode : "USD"}});

oModel.submitChanges({success: mySuccessHandler, error: myErrorHandler});
        // handle successful creation or reset
        oContext.created().then(
          function () { /* successful creation */ },
          function () { /* deletion of the created entity before it is persisted */ }
        );
         }
         var oModel = new ODataModel("http://localhost:8089/Northwind/Northwind.svc/");
         var oData = {
            name:'Jerry'
         };
         
         oModel.attachMetadataLoaded(oData, myLoaded);

var oMetadata = oModel.getServiceMetadata();

var result = oModel.getProperty("/Customer('ALFKI')/Address");

debugger;
         
        // bind a form against the transient context for the newly created entity
        // oForm.setBindingContext(oContext);
         
        // submit the changes: creates entity in the back end
        
         
       },
       init : function () {
          UIComponent.prototype.init.apply(this, arguments);
          this.initOData();
          var oData = {
             recipient : {
                name : "SAP UI5 初學者教程之九 - 建立第一個 Component"
             }
          };
          var oModel = new JSONModel(oData);
          this.setModel(oModel);
 
          var i18nModel = new ResourceModel({
             bundleName: "sap.ui5.walkthrough.i18n.i18n"
          });
          this.setModel(i18nModel, "i18n");
       }
    });
 });
```
現在 metadata 處於成功載入狀態，執行 create 函式：

![](https://img-blog.csdnimg.cn/img_convert/95c083ffbbf3f8f8c4db131b16fcd8ff.png)

得到 entityType：
![](https://img-blog.csdnimg.cn/img_convert/995dc1714895c1c1afc66302fc4d29b0.png)

this.mChangeGroups 裡有一個預設的 change group：
![](https://img-blog.csdnimg.cn/img_convert/dd8c4aba4ef51554d847bb4be2c3c2f0.png)

使用預設的 changes group：
![](https://img-blog.csdnimg.cn/img_convert/35cf83b092ae17d1c0f9153429250484.png)

生成一個 dummy 的 uid？

![](https://img-blog.csdnimg.cn/img_convert/6f319541e64dcca53162dccd8b6117c9.png)

submit change：
![](https://img-blog.csdnimg.cn/img_convert/427fcf84dfe72dc8cf26edd3a1f2d3d1.png)

執行非同步佇列：
![](https://img-blog.csdnimg.cn/img_convert/eaac1f9755f6a13fbfa6737838c976bf.png)

這個 batch 請求什麼時候生成的？

![](https://img-blog.csdnimg.cn/img_convert/447959e4005c2bbe69becb4cae5cc9c9.png)

HTTP 202 狀態碼代表的意思是 請求已被接受，但尚未處理，即 HTTP 202 Accepted 響應狀態。

這個狀態碼錶明客戶端發起的請求，可能會被伺服器端處理，也可能會被拒絕，適用於`非同步操作場合`，允許伺服器接受其他過程請求，而不用讓客戶端一直保持與伺服器的連線直至批處理操作全部完成。

使用 Postman 給 Northwind 傳送 HTTP post 請求建立 customers 的 script：

![](https://img-blog.csdnimg.cn/img_convert/810aa44dc371019d904a9a1558f2bcb0.png)

url：https://services.odata.org/V2/Northwind/Northwind.svc/$batch

content-type：multipart/mixed;boundary=batch_23c4-3627-5005

body：

```sql
--batch_23c4-3627-5005
Content-Type: multipart/mixed; boundary=changeset_6ddc-5df2-c1a1

--changeset_6ddc-5df2-c1a1
Content-Type: application/http
Content-Transfer-Encoding: binary

POST Customers HTTP/1.1
Content-Type: application/json
Content-ID: id-1664894186776-9
sap-contextid-accept: header
Accept: application/json
Accept-Language: en-US
DataServiceVersion: 2.0
MaxDataServiceVersion: 2.0
Content-Length: 130

{"Name":"Laptop X","Description":"New Laptop","Price":"1000","CurrencyCode":"USD","__metadata":{"type":"NorthwindModel.Customer"}}
--changeset_6ddc-5df2-c1a1--

--batch_23c4-3627-5005--
```

傳送之後，收到 HTTP 202 Accepted 的響應：
![](https://img-blog.csdnimg.cn/img_convert/980f6b4eab1731758b15828106fa34b1.png)

SAP UI5 ODataModel.createEntry 單步除錯

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