After much searching I found the answer here. StringBuilder sb = new StringBuilder(); sb.append("data:image/png;base64,"); ... ... <看更多>

byte[] encoded = Base64.encodeBase64(bytes);. String encodedString = new String(encoded);. return encodedString;. } private static byte[] loadFile(File ... ... <看更多>

Multipart file support in Spring Boot | CodedTribe ... Enable Cross-Origin Resource Sharing in REST | Spring ... ... <看更多>