wro4j

https://wro4j.github.io/wro4j/

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wro4j is a Web Resource Optimizer for Java that analyzes and optimizes web resources by integrating...

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### Use Optimized Resources in HTML

Source: https://wro4j.github.io/wro4j

Link to the optimized CSS and JavaScript files in your HTML using the configured URL pattern. Wro4j will serve the combined and minified resources.

```html
<html>
    <head>
        <title>Web Page using wro4j</title>
        <link rel="stylesheet" type="text/css" href="/wro/all.css" />
    </head>
    <body>
        <script type="text/javascript" src="/wro/all.js"/>
    </body>
</html>
```

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### Define Resource Groups in wro.xml

Source: https://wro4j.github.io/wro4j

Create a wro.xml file to define groups of resources (CSS and JS) that wro4j will optimize. This configuration file specifies which files belong to each group.

```xml
<groups xmlns="http://www.isdc.ro/wro">
    <group name="all">
        <css>/asset/*.css</css>
        <js>/asset/*.js</js>
    </group>
</groups>
```

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### Configure WroFilter in web.xml

Source: https://wro4j.github.io/wro4j

Add the WroFilter to your web.xml to enable wro4j's resource optimization capabilities. This filter intercepts requests for optimized resources.

```xml
<filter>
    <filter-name>WebResourceOptimizer</filter-name>
    <filter-class>
      ro.isdc.wro.http.WroFilter
    </filter-class>
</filter>
<filter-mapping>
    <filter-name>WebResourceOptimizer</filter-name>
    <url-pattern>/wro/*</url-pattern>
</filter-mapping>
```

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