package com.ruoyi.common.utils;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.util.Base64;
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public class ImageToBase64 {
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public static String convertImageToBase64(String imageUrl) {
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try {
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// 创建URL对象
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URL url = new URL(imageUrl);
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HttpURLConnection connection = (HttpURLConnection) url.openConnection();
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// 设置请求方法和超时时间
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connection.setRequestMethod("GET");
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connection.setConnectTimeout(5000);
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connection.setReadTimeout(5000);
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connection.setDoInput(true);
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// 获取输入流
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InputStream inputStream = connection.getInputStream();
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// 读取图片字节数据
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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byte[] buffer = new byte[1024];
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int bytesRead;
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while ((bytesRead = inputStream.read(buffer)) != -1) {
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byteArrayOutputStream.write(buffer, 0, bytesRead);
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}
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byte[] imageBytes = byteArrayOutputStream.toByteArray();
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// 关闭流
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inputStream.close();
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byteArrayOutputStream.close();
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// 将图片字节数组编码为 Base64 字符串
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return Base64.getEncoder().encodeToString(imageBytes);
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} catch (Exception e) {
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e.printStackTrace();
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return null;
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}
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}
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}
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