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2024年3月6日发(作者：ascii码对照表小写字母)

thymeleaf select 回显

Thymeleaf is a Java-based templating engine that allows you to

create dynamic web pages and HTML templates. To perform select

element value retrieval and rendering in Thymeleaf, you can use

the `th:field` and `th:selected` attributes.

Here's an example of how to use Thymeleaf to select the

previously selected value in the HTML select element:

1. In your controller, pass the selected value to the model:

```java

ribute("selectedValue", "option2"); // Replace

"option2" with the actual selected value from your data source

```

2. In your HTML template, use Thymeleaf to render the select

element by using the `th:field` and `th:selected` attributes:

```html

```

In the above example, the `th:field` attribute is used to bind the

select element's value to the `selectedValue` variable in the model.

The `th:selected` attribute is used to conditionally select the option

based on the value of `selectedValue` in the model.

Replace "option1", "option2", and "option3" with the actual values

you want to display in the select options, and adjust the condition

in the `th:selected` attribute accordingly.

This way, the select element will be populated with the options,

and the previously selected value will be displayed when the page

is rendered.


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