docs.sheetjs.com/docz/docs/03-demos/02-frontend/10-openui5.md

---
title: Sheets in UI5 Sites
sidebar_label: OpenUI5 / SAPUI5
description: Build enterprise-grade applications with OpenUI5. Seamlessly integrate spreadsheets into your app using SheetJS. Bring Excel-powered workflows and data to the modern web.
pagination_prev: demos/index
pagination_next: demos/grid/index
sidebar_position: 10
---

import current from '/version.js';
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
import CodeBlock from '@theme/CodeBlock';

[OpenUI5](https://openui5.org/) is a JavaScript framework for building
enterprise-ready web applications. It is compatible with the SAPUI5 framework.

[SheetJS](https://sheetjs.com) is a JavaScript library for reading and writing
data from spreadsheets.

This demo shows how to handle spreadsheet data in OpenUI5 apps using SheetJS.
You'll learn how to load spreadsheet files, process their data, and generate
new spreadsheet exports.

:::info pass

[Docs Issue #20](https://git.sheetjs.com/sheetjs/docs.sheetjs.com/issues/20)
includes a complete example starting from the OpenUI5 "Worklist App Tutorial".

:::

## Installation

SheetJS libraries conform to the UI5 ECMAScript requirements[^1]. SheetJS
libraries can be loaded in a UI5 site at different points in the app lifecycle.

#### UI5 Module {#installation-define}

The [SheetJS Standalone scripts](/docs/getting-started/installation/standalone)
comply with AMD `define` semantics. They support `sap.ui.define` out of the box.

If the SheetJS Standalone script is saved to `webapp/xlsx.full.min.js`, the base
script `webapp/index.js` can load the `./xlsx.full.min` dependency:

```js title="webapp/index.js (loading the SheetJS dependency)"
sap.ui.define([
  // highlight-next-line
  "./xlsx.full.min", // relative path to script, without the file extension
  /* ... other libraries ... */
], function (
  // highlight-next-line
  _XLSX // !! NOTE: this is not XLSX! A different variable name must be used
  /* ... variables for the other libraries ... */,
) {
  // highlight-next-line
  alert(XLSX.version); // use XLSX in the callback
});
```

:::info pass

In some deployments, the function argument was `undefined`.

The standalone scripts add `window.XLSX`, so it is recommended to use `_XLSX`
in the function arguments and access the library with `XLSX` in the callback.

:::

#### HTML {#installation-html}

UI5 is typically loaded in a `SCRIPT` tag in `webapp/index.html`. Similarly,
[SheetJS Standalone scripts](/docs/getting-started/installation/standalone)
can be loaded with a `SCRIPT` tag in the same HTML page:

<CodeBlock language="html" value="html" title="index.html (add in the HEAD block before UI5 scripts)">{`\
<script src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>
`}
</CodeBlock>

This will expose the `XLSX` global object, which includes the functions listed
in the ["API Reference"](/docs/api/) section of the documentation.

:::caution pass

**The SheetJS Standalone script must be loaded before the UI5 bootstrap script**:

<CodeBlock language="html" value="html" title="webapp/index.html (loading the SheetJS standalone script)">{`\
<head>
  <meta charset="utf-8">
  <title>UI5 Walkthrough</title>

  <!-- The SheetJS Standalone script must be loaded before the UI5 bootstrap -->
  <script src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>
  
  <!-- UI5 bootstrap script -->
  <script
    id="sap-ui-bootstrap"
    src="resources/sap-ui-core.js"
    ...(other attributes)...
  ></script>
</head>
`}
</CodeBlock>

:::

## Internal State

The various SheetJS APIs work with various data shapes. The preferred state
depends on the application.

### JSON Model

The UI5 `JSONModel`[^2] is a client-side model implementation for JavaScript
object data. Think of it like a container that holds your spreadsheet data.

`JSONModel` provides powerful two-way data binding capabilities. UI5 will
automatically updates your webpage whenever the data changes. It will also
respond to changes when users interact with components in the webpage.


#### State {#json-state}

The example [presidents sheet](https://docs.sheetjs.com/pres.xlsx) has one
header row with "Name" and "Index" columns. The natural JS representation is an
object for each row, where the keys are specified in the first row:

<table>
  <thead><tr><th>Spreadsheet</th><th>State</th></tr></thead>
  <tbody><tr><td>

![`pres.xlsx` data](pathname:///pres.png)

</td><td>

```js
[
  { Name: "Bill Clinton", Index: 42 },
  { Name: "GeorgeW Bush", Index: 43 },
  { Name: "Barack Obama", Index: 44 },
  { Name: "Donald Trump", Index: 45 },
  { Name: "Joseph Biden", Index: 46 }
]
```

</td></tr></tbody></table>

Here is a basic example of initializing a model. A more complete implementation
will be shown later.

```js title="UI5 JSONModel for rows of data"
sap.ui.define(["sap/ui/model/json/JSONModel"], function (JSONModel) {
  // highlight-next-line
  const oModel = new JSONModel({ presidents: [] });
});
```

#### Updating State {#json-update}

Starting from a spreadsheet file, the SheetJS [`read`](/docs/api/parse-options)
method parses the data into a SheetJS workbook object[^3]. After selecting a
worksheet, the [`sheet_to_json`](/docs/api/utilities/array#array-output) method
generates row objects that can be assigned to the model.

Here is a sample flow diagram and method for downloading a workbook, generating
rows from the first worksheet, and updating a UI5 `JSONModel`:

```mermaid
flowchart LR
  url[(Remote\nFile)]
  ab[(Data\nArrayBuffer)]
  wb(SheetJS\nWorkbook)
  ws(SheetJS\nWorksheet)
  aoo(array of\nobjects)
  model((JSON\nModel))
  url --> |fetch\n\n| ab
  ab --> |read\n\n| wb
  wb --> |wb.Sheets\nselect sheet| ws
  ws --> |sheet_to_json\n\n| aoo
  aoo --> |setProperty\nfrom model| model
  linkStyle 1,2,3 color:blue,stroke:blue;
```

```js title="Download workbook, extract data from first worksheet, and update JSONModel"
_loadExcelFile: async function () {
  /* Download from https://docs.sheetjs.com/pres.xlsx */
  const f = await (await fetch("https://docs.sheetjs.com/pres.xlsx")).arrayBuffer();

  // highlight-start
  /* parse */
  const wb = XLSX.read(f); // parse the array buffer
  /* generate array of objects from first worksheet */
  const ws = wb.Sheets[wb.SheetNames[0]]; // get the first worksheet
  const data = XLSX.utils.sheet_to_json(ws); // generate objects

  /* update JSONModel */
  this.getView().getModel().setProperty("/presidents", data);
  // highlight-end
}
```

#### Rendering Data {#json-render}

In UI5, the "Model-View-Controller"[^4] pattern is used to organize code and
separate concerns. The view defines the UI structure, the controller handles the
logic, and the model manages the data.

The following example uses the `Table` component[^5] to display data.

```xml title="Example View XML for displaying an array of objects"
<mvc:View>
  <Page>
    <!-- The Table component binds to the presidents array -->
    <!-- highlight-next-line -->
    <Table width="300px" items="{/presidents}">
      <!-- Column definitions specify the table structure -->
      <columns>
        <Column><header><Text text="Name" /></header></Column>
        <Column><header><Text text="Value" /></header></Column>
      </columns>
      <!-- ColumnListItem template defines how each row should be rendered -->
      <!-- highlight-start -->
      <items>
        <ColumnListItem>
          <cells>
            <Text text="{Name}" />
            <Text text="{Index}" />
          </cells>
        </ColumnListItem>
      </items>
      <!-- highlight-end -->
    </Table>
  </Page>
</mvc:View>
```

#### Exporting Data {#json-export}

The `getProperty` method[^6] of the `JSONModel` pulls data from the UI5 model.
If an array of objects was pushed with `setProperty`, the `getProperty` method
will return an array of objects.

The SheetJS [`json_to_sheet`](/docs/api/utilities/array#array-of-objects-input)
function will create a SheetJS worksheet object[^7] from the data in the array.
The [`book_new`](/docs/api/utilities/wb) method will create a SheetJS workbook
object that includes the new worksheet. [`writeFile`](/docs/api/write-options)
will attempt to generate a file and initiate a download.

```mermaid
flowchart LR
  state((State\nJSONModel))
  aoo[(Array of\nObjects)]
  ws(SheetJS\nWorksheet)
  wb(((SheetJS\nWorkbook)))
  file[(XLSX\nexport)]
  state --> |getProperty\n\n| aoo
  aoo --> |json_to_sheet\n\n| ws
  ws --> |book_new\n\n| wb
  wb --> |writeFile\n\n| file
  linkStyle 1,2,3 color:blue,stroke:blue;
```

Here is a sample method for exporting data from the UI5 `JSONModel` to XLSX: 

```js title="Fetch data from JSONModel and export to XLSX"
/* get model data and export to XLSX */
onExport: function () {
  const data = this.getView().getModel().getProperty("/presidents");
  /* generate worksheet from model data */
  // highlight-next-line
  const ws = XLSX.utils.json_to_sheet(data);
  /* create workbook and append worksheet */
  const wb = XLSX.utils.book_new(ws, "Data");
  /* export to XLSX */
  XLSX.writeFileXLSX(wb, "SheetJSOpenUI5AoO.xlsx");
}
```

This method can be bound to the `press` event of a `sap.m.Button` control:

```xml title="Example View XML for exporting an array of objects to a workbook"
<mvc:View>
  <Page>
    <!-- The `onExport` method is bound to the `press` event -->
    <Button text="Export Data" press=".onExport" />
  </Page>
</mvc:View>
```

#### Complete Component

This complete component example fetches a test file and displays the contents in a table.
When the export button is clicked, an event handler will export a file:

##### View Implementation {#view-implementation}

```xml title="webapp/view/Main.view.xml"
<mvc:View controllerName="sheetjs.openui5.controller.Main" displayBlock="true" xmlns="sap.m" xmlns:mvc="sap.ui.core.mvc" xmlns:core="sap.ui.core" core:require="{formatter: 'sheetjs/openui5/model/formatter'}">
  <Page>
    <VBox width="auto" alignItems="Start">
      <Table width="300px" items="{/presidents}">
        <columns>
          <Column><header><Text text="Name" /></header></Column>
          <Column><header><Text text="Index" /></header></Column>
        </columns>
        <items><ColumnListItem><cells>
          <Text text="{Name}" />
          <Text text="{Index}" />
        </cells></ColumnListItem></items>
      </Table>
      <Button text="Export XLSX" press=".onExport" />
    </VBox>
  </Page>
</mvc:View>
```

##### Controller Implementation {#controller-implementation}

```js title="webapp/controller/Main.controller.js"
sap.ui.define(
  ["./BaseController", "sap/ui/model/json/JSONModel"],
  function (BaseController, JSONModel) {
    "use strict";

    return BaseController.extend("com.demo.xlsx.controller.Main", {
      onInit: function () {
        /* initialize model */
        const oModel = new JSONModel({ presidents: [] });
        this.getView().setModel(oModel);
        /* load data */
        this._loadExcelFile();
      },

      _loadExcelFile: async function () {
        /* fetch and parse file */
        const f = await (await fetch("https://docs.sheetjs.com/pres.xlsx")).arrayBuffer();
        const wb = XLSX.read(f);
        /* extract data from first worksheet */
        const ws = wb.Sheets[wb.SheetNames[0]];
        const data = XLSX.utils.sheet_to_json(ws);
        /* update state model */
        this.getView().getModel().setProperty("/presidents", data);
      },

      onExport: function () {
        /* fetch data from model */
        const data = this.getView().getModel().getProperty("/presidents");
        /* generate workbook */
        const ws = XLSX.utils.json_to_sheet(data);
        const wb = XLSX.utils.book_new(ws, "Data");
        /* export to XLSX */
        XLSX.writeFileXLSX(wb, "SheetJSOpenUI5AoO.xlsx");
      },
    });
  }
);
```

<details open>
  <summary><b>How to run the example</b> (click to hide)</summary>

:::note Tested Deployments

This demo was tested in the following environments:

| OpenUI5   | Date       |
|:----------|------------|
| `1.132.1` | 2025-01-24 |

:::

1) Create a new site:

```bash
npm i --global generator-easy-ui5
npx yo easy-ui5 app
```

When prompted, enter the following options:

 - `Enter your application id (namespace)?`: Type `sheetjs.openui5` and press <kbd>Enter</kbd>
 - `Which framework do you want to use?`: Press <kbd>Enter</kbd> (`OpenUI5` should be the default)
 - `Which framework version do you want to use?`: Type `1.132.1` and press <kbd>Enter</kbd>
 - `Who is the author of the application?`: Press <kbd>Enter</kbd> (use the default author)
 - `Would you like to create a new directory for the application?`: Type `Y` and press <kbd>Enter</kbd>
 - `Would you like to initialize a local git repository for the application?`: Type `N` and press <kbd>Enter</kbd>

![Expected output](pathname:///ui5/easy-ui5.png)

2) Install the dependencies and start server:

```bash
cd sheetjs.openui5
npm install
npm start
```

3) Open a web browser and access the displayed URL (`http://localhost:8080`).

In the file listing, click `index.html` to launch the app.

4) Add the SheetJS Standalone script to `webapp/index.html` after the `title` tag:

<CodeBlock language="html" value="html" title="webapp/index.html (add highlighted lines)">{`\
    <title>UI5 Application: sheetjs.openui5</title>
    <!-- highlight-next-line -->
    <script src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>`}
</CodeBlock>

5) Replace `webapp/view/Main.view.xml` with the `Main.view.xml` snippet in the
["View Implementation" section](#view-implementation).

6) Replace `webapp/controller/Main.controller.js` with the `Main.controller.js`
example in the ["Controller Implementation" section](#controller-implementation).

7) Switch back to the browser window.

The page will refresh and show a table with an Export button.

Click the button and the page will attempt to download `SheetJSOpenUI5AoO.xlsx`.
This file can be inspected with a spreadsheet editor.

8) Build the site:

```bash
npm run build:opt
```

The generated site will be placed in the `dist` folder.

:::caution pass

SAP recommends `npm run build`. This does not generate a proper standalone site!
Sites built with `npm run build` must be served with `npm run start:dist`.

This demo uses the `build:opt` target to ensure that a proper static site is
generated. The `dist` folder in this demo can be deployed on a static host.

:::

9) Start a local web server:

```bash
npx http-server dist
```

Access the displayed URL (typically `http://localhost:8080`) with a web browser
and test the page.

When the page loads, the app will fetch https://docs.sheetjs.com/pres.xlsx and
display the data from the first worksheet in a TABLE. The "Export XLSX" button
will generate a workbook that can be opened in a spreadsheet editor.

</details>

### HTML

The main disadvantage of the Array of Objects approach is the specific nature
of the columns. For more general use, passing around an Array of Arrays works.
However, this does not handle merge cells[^8] well!

The [`sheet_to_html`](/docs/api/utilities/html#html-table-output) function
generates HTML that is aware of merges and other worksheet features.

To render the HTML string from the model, the property from the model should be
bound to the `content` property of a UI5 `core:HTML`[^9] control.

On export, the [`table_to_book`](/docs/api/utilities/html#html-table-input)
method creates a SheetJS workbook object from the rendered HTML table.

##### View Implementation {#view-implementation-html}

```xml title="webapp/view/Main.view.xml"
<mvc:View controllerName="sheetjs.openui5.controller.Main" displayBlock="true" xmlns="sap.m" xmlns:mvc="sap.ui.core.mvc" xmlns:core="sap.ui.core" xmlns:html="http://www.w3.org/1999/xhtml">
  <Page>
    <content>
      <core:HTML id="tbl" content="{/tableHTML}" />
      <Button text="Export XLSX" press=".onExport"/>
    </content>
  </Page>
</mvc:View>
```

##### Controller Implementation {#controller-implementation-html}

```js title="webapp/controller/Main.controller.js"
sap.ui.define([
    "sap/ui/core/mvc/Controller",
    "sap/ui/model/json/JSONModel"
  ], function (Controller, JSONModel) {
    "use strict";

    return Controller.extend("sheetjs.openui5.controller.Main", {
      onInit: function () {
        /* the component state is an HTML string */
        const oModel = new JSONModel({ tableHTML: "", });
        this.getView().setModel(oModel);
        /* load data */
        this._loadExcelFile();
      },

      _loadExcelFile: async function () {
        /* fetch and parse file */
        const f = await (await fetch("https://docs.sheetjs.com/pres.xlsx")).arrayBuffer();
        const wb = XLSX.read(f);
        /* generate HTML table from first worksheet */
        const ws = wb.Sheets[wb.SheetNames[0]];
        const opts = { header: `<table>`, footer: `</table>` };
        const tableHTML = XLSX.utils.sheet_to_html(ws, opts);
        /* update state model */
        this.getView().getModel().setProperty("/tableHTML", tableHTML);
      },

      onExport: function () {
        /* Get reference to the `TABLE` element in the model */
        const table = this.getView().byId("tbl").getDomRef();

        /* Generate workbook */
        const wb = XLSX.utils.table_to_book(table);

        /* Export to XLSX */
        XLSX.writeFileXLSX(wb, "SheetJSOpenUI5HTML.xlsx");
      },
    });
  }
);
```

<details open>
  <summary><b>How to run the example</b> (click to hide)</summary>

:::note Tested Deployments

This demo was tested in the following environments:

| OpenUI5   | Date       |
|:----------|------------|
| `1.132.1` | 2025-01-24 |

:::

1) Create a new site:

```bash
npm i --global generator-easy-ui5
npx yo easy-ui5 app
```

When prompted, enter the following options:

 - `Enter your application id (namespace)?`: Type `sheetjs.openui5` and press <kbd>Enter</kbd>
 - `Which framework do you want to use?`: Press <kbd>Enter</kbd> (`OpenUI5` should be the default)
 - `Which framework version do you want to use?`: Type `1.132.1` and press <kbd>Enter</kbd>
 - `Who is the author of the application?`: Press <kbd>Enter</kbd> (use the default author)
 - `Would you like to create a new directory for the application?`: Type `Y` and press <kbd>Enter</kbd>
 - `Would you like to initialize a local git repository for the application?`: Type `N` and press <kbd>Enter</kbd>

![Expected output](pathname:///ui5/easy-ui5.png)

2) Install the dependencies and start server:

```bash
cd sheetjs.openui5
npm install
npm start
````

3) Open a web browser and access the displayed URL (`http://localhost:8080`)

In the file listing, click `index.html` to launch the app.

4) Add the SheetJS Standalone script to `webapp/index.html` after the `title` tag:

<CodeBlock language="html" value="html" title="webapp/index.html (add highlighted lines)">{`\
    <title>UI5 Application: sheetjs.openui5</title>
    <!-- highlight-next-line -->
    <script src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>`}
</CodeBlock>

5) Replace `webapp/view/Main.view.xml` with the `Main.view.xml` snippet in the
["View Implementation" section](#view-implementation-html).

6) Replace `webapp/controller/Main.controller.js` with the `Main.controller.js`
example in ["Controller Implementation"](#controller-implementation-html).

7) Switch back to the browser window.

The page will refresh and show a table with an Export button.

Click the button and the page will attempt to download `SheetJSOpenUI5HTML.xlsx`.
This file can be inspected with a spreadsheet editor.

8) Build the site:

```bash
npm run build:opt
```

The generated site will be placed in the `dist` folder.

:::caution pass

SAP recommends `npm run build`. This does not generate a proper standalone site!
Sites built with `npm run build` must be served with `npm run start:dist`.

This demo uses the `build:opt` target to ensure that a proper static site is
generated. The `dist` folder in this demo can be deployed on a static host.

:::

9) Start a local web server:

```bash
npx http-server dist
```

Access the displayed URL (typically `http://localhost:8080`) with a web browser
and test the page.

When the page loads, the app will fetch https://docs.sheetjs.com/pres.xlsx and
display the data from the first worksheet in a TABLE. The "Export XLSX" button
will generate a workbook that can be opened in a spreadsheet editor.

</details>


[^1]: See ["ECMAScript Support"](https://sdk.openui5.org/topic/0cb44d7a147640a0890cefa5fd7c7f8e.html#loio0cb44d7a147640a0890cefa5fd7c7f8e/section_UI5Mod) for more details about OpenUI5 compatibility.
[^2]: See [`JSONModel`](https://sdk.openui5.org/1.38.62/docs/api/symbols/sap.ui.model.json.JSONModel.html) in the OpenUI5 documentation.
[^3]: See ["SheetJS Data Model"](/docs/csf/)
[^4]: See [OpenUI5's MVC Documentation](https://sdk.openui5.org/topic/91f233476f4d1014b6dd926db0e91070) for detailed explanation of the pattern implementation.
[^5]: See ["List, List Item, and Table"](https://sdk.openui5.org/topic/295e44b2d0144318bcb7bdd56bfa5189) in the OpenUI5 documentation.
[^6]: See [`getProperty` of class `sap.ui.model.json.JSONModel`](https://sdk.openui5.org/api/sap.ui.model.json.JSONModel#methods/getProperty) in the OpenUI5 documentation.
[^7]: See ["Worksheet Object" in "SheetJS Data Model"](/docs/csf/sheet) for more details.
[^8]: See ["Merged Cells" in "SheetJS Data Model"](/docs/csf/features/merges) for more details.
[^9]: See [`core:HTML`](https://sdk.openui5.org/1.38.62/docs/api/symbols/sap.ui.core.HTML.html) in the OpenUI5 documentation.