我正在尝试将OData V4与SAPUI5一起使用。尽管看起来很简单,但我面临着两个问题。
我正在使用Demokit中的sap.ui.layout.sample.SimpleFormToolbar示例。实现了OData V4服务,以简单形式显示数据。
我在此应用中所做的更改:
1. manifest.json和
2.用于表单控件的上下文绑定的Page.view.xml
3.删除了控制器和index.html
但是,我无法获得以下错误的数据:
2019-07-07 08:58:23.736110 Failed to update path /Suppliers(12345)/Country - **Error: Must not change a property before it has been read**
**Uncaught Error: Must not change a property before it has been read**
另一个错误是与批处理模式有关。我尚未在Odata impl中实现任何批处理。
2019-07-07 08:58:24.279114 **$batch failed** - Error: Network error
2019-07-07 08:58:24.281175 Failed to read path /Suppliers(12345) - Error: **HTTP request was not processed because $batch failed**
我使用的代码是:
// manifest.json
{
"_version": "1.12.0",
"sap.app": {
"id": "sap.ui.layout.sample.SimpleFormToolbar",
"applicationVersion": {
"version": "1.0.0"
},
"dataSources": {
"supplierOData": {
"uri": "https://supplierappp1014576trial.hanatrial.ondemand.com/SupplierApp/SupplierService.svc/",
"type": "OData",
"settings": {
"odataVersion": "4.0"
}
}
}
},
"sap.ui5": {
"rootView": {
"viewName": "sap.ui.layout.sample.SimpleFormToolbar.Page",
"type": "XML",
"async": true
},
"dependencies": {
"libs": {
"sap.ui.layout": {}
}
},
"models": {
"": {
"dataSource": "supplierOData",
"settings" : {
"synchronizationMode" : "None"
}
}
},
"config": {
"sample": {
"files": [
"Page.view.xml",
"Page.controller.js",
"manifest.json"
]
}
}
}
}
// Page.view.xml
<mvc:View
controllerName="sap.ui.layout.sample.SimpleFormToolbar.Page"
xmlns:l="sap.ui.layout"
xmlns:f="sap.ui.layout.form"
xmlns:mvc="sap.ui.core.mvc"
xmlns:core="sap.ui.core"
xmlns="sap.m">
<VBox class="sapUiSmallMargin">
<f:SimpleForm id="SimpleFormToolbar"
binding="{/Suppliers(12345)}"
editable="true"
layout="ResponsiveGridLayout"
labelSpanXL="4"
labelSpanL="3"
labelSpanM="4"
labelSpanS="12"
adjustLabelSpan="false"
emptySpanXL="0"
emptySpanL="4"
emptySpanM="0"
emptySpanS="0"
columnsXL="2"
columnsL="1"
columnsM="1"
singleContainerFullSize="false"
ariaLabelledBy="Title1" >
<f:toolbar>
<Toolbar id="TB1">
<Title id="Title1" text="Address" level="H4" titleStyle="H4"/>
<ToolbarSpacer />
<Button icon="sap-icon://settings"/>
<Button icon="sap-icon://drop-down-list" />
</Toolbar>
</f:toolbar>
<f:content>
<Toolbar ariaLabelledBy="Title2">
<Title id="Title2" text="Office" level="H5" titleStyle="H5"/>
<ToolbarSpacer />
<Button icon="sap-icon://settings"/>
</Toolbar>
<Label text="Name" />
<Input value="{SupplierName}" />
<Label text="Street/No." />
<Input value="{Street}">
</Input>
<Input value="{HouseNumber}">
<layoutData>
<l:GridData span="XL2 L1 M3 S4" />
</layoutData>
</Input>
<Label text="ZIP Code/City" />
<Input value="{ZIPCode}">
<layoutData>
<l:GridData span="XL2 L1 M3 S4" />
</layoutData>
</Input>
<Input value="{City}" />
<Label text="Country" />
<Select id="country" selectedKey="{Country}">
<items>
<core:Item text="England" key="England"/>
<core:Item text="Germany" key="Germany"/>
<core:Item text="USA" key="USA"/>
</items>
</Select>
<Toolbar ariaLabelledBy="Title3">
<Title id="Title3" text="Online" level="H5" titleStyle="H5"/>
<ToolbarSpacer />
<Button icon="sap-icon://settings"/>
</Toolbar>
<Label text="Web" />
<Input value="{Url}" type="Url" />
<Label text="Twitter" />
<Input value="{Twitter}" />
</f:content>
</f:SimpleForm>
</VBox>
</mvc:View>
// Page.controller.js
sap.ui.define([
'jquery.sap.global',
'sap/ui/core/mvc/Controller',
'sap/ui/model/json/JSONModel',
'sap/ui/model/odata/v4/ODataModel'
], function(jQuery, Controller, JSONModel, ODataModel) {
"use strict";
var PageController = Controller.extend("sap.ui.layout.sample.SimpleFormToolbar.Page", {
onInit: function (oEvent) {
console.log("hello");
jQuery.get({
url: "/SupplierService/SupplierService.svc/Suppliers(12345)",
success: function(data) {
console.log( "Recieved data: " + data);
},
error: function(error) {
// your error logic
console.log("Error while requesting odata: " + error);
}
});
}
});
return PageController;
});
// index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="expires" content="0">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Fullscreen – with toolbar</title>
<script id="sap-ui-bootstrap"
src="https://sapui5.hana.ondemand.com/resources/sap-ui-core.js"
data-sap-ui-theme="sap_belize"
data-sap-ui-resourceroots='{
"sap.ui.layout.sample.SimpleFormToolbar": "./",
"sap.ui.demo.mock": "mockdata"
}'
data-sap-ui-compatVersion="edge"
data-sap-ui-async="true"
data-sap-ui-preload=""
data-sap-ui-frameOptions="trusted"
data-sap-ui-oninit="module:sap/ui/core/ComponentSupport">
</script>
</head>
<body class="sapUiBody" id="content">
<div data-sap-ui-component
data-name="sap.ui.layout.sample.SimpleFormToolbar"
data-height="100%"
data-id="container"
data-settings='{"id" : "sap.ui.layout.sample.SimpleFormToolbar"}'
style="height: 100%">
</div>
</body>
</html>
我添加了jquery调用只是为了查看odata是否正常工作。
用于CORS问题的命令:“ C:\ Program Files(x86)\ Google \ Chrome \ Application \ chrome.exe” --disable-web-security --disable-gpu --user-data-dir =〜 / chromeTemp
我实际上是指向同一项目中的odata服务。相同的部署在Sap Cloud上:https://supplierappp1014576trial.hanatrial.ondemand.com/SupplierApp/SupplierService.svc/
感谢您的时间。
在下面将解决方案添加为答案。
答案 0 :(得分:1)
错误:
“在读取属性之前不得更改属性”被理解为 CORS问题 。 通过配置web.xml可以在服务器端接受跨源请求。请注意,应针对生产用途进行重新评估。
<filter> <filter-name>CorsFilter</filter-name> <filter-class>org.apache.catalina.filters.CorsFilter</filter-class> </filter> <filter-mapping> <filter-name>CorsFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
错误:
通过将 groupId更改为$ direct ,可以解决“ $批处理失败-错误:网络错误”的问题。这意味着我们将向odata服务发送单个网络呼叫。
"models": {
"": {
"dataSource": "supplierOData",
"settings" : {
"synchronizationMode" : "None",
"groupId": "$direct"
}
}
},
这消除了那些错误,我看到数据已呈现到表单字段中。
感谢您的关注。