请问如何直接把下载的图片显示在 页面上的图片框或者其他组件？ 因为特殊原因不能...

请问如何直接把下载的图片显示在 页面上的图片框或者其他组件？ 因为特殊原因不能直接访问图片地址

125680398 发表于 2024-1-22 08:51
试过了 图片框还是显示不出来

iVBORw0KGgoAAAANSUhEUgAAAG4AAAA3CAYAAADt2n/EAAAAGXRFWHRTb2Z0d2FyZQB ...

需要加上前缀：如png的："data:image/png;base64,"+。。。。

须求是直接把访问返回的数据 显示在图片框上面

我提供个思路，供你参考：
1、下载图片到ForguncyServer的目录，这样你可以获取到一个本地的url；类似http://127.0.0.1/img/xxxx;
2、把这个url写到数据库图片字段；
3、单元格是图片的话就可以显示了；

server2021 发表于 2024-1-21 19:16
我提供个思路，供你参考：
1、下载图片到ForguncyServer的目录，这样你可以获取到一个本地的url；类似http ...

这样不行。服务器硬盘小。加上后期图片多！我也只是临时浏览的图片 做保存没意义！有别的更好的办法吗？比如HTTP 请求后返回内容到图片框可以直接显示出来

125680398 发表于 2024-1-21 19:28
这样不行。服务器硬盘小。加上后期图片多！我也只是临时浏览的图片 做保存没意义！有别的更好的办法吗？ ...

定时清理就好了

125680398 发表于 2024-1-21 19:28
这样不行。服务器硬盘小。加上后期图片多！我也只是临时浏览的图片 做保存没意义！有别的更好的办法吗？ ...

把HTTP请求到的转成BASE64，这样可以直接显示到页面

赛龙周 发表于 2024-1-21 21:19
把HTTP请求到的转成BASE64，这样可以直接显示到页面

试过了 图片框还是显示不出来

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