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Process the cached image of the browser, and only request it once

2022-07-21 15:21:00 【Ink fragrance^_^】

Set the browser not to cache a picture , Just set the following fields in the response header returned by this picture .

// Set the browser not to cache this picture 

resp.setHeader("Pragma", "No-cache");
resp.setHeader("Cache-Control", "non-cache");
resp.setDateHeader("Expires", 0);



js Make the following settings in 

function changeImage(){
    document.getElementById("img").src = "${pageContext.request.contextPath}/imageCode?time=" 
        + new Date().getTime();
}

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本文为[Ink fragrance^_^]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/202/202207202054040204.html

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