Image uploading is now available

mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/utils/BufferedImageJvm.kt

@@ -10,7 +10,7 @@ import java.security.MessageDigest
 import javax.imageio.ImageIO
 import java.awt.image.BufferedImage as JavaBufferedImage
 
-fun JavaBufferedImage.toMiraiImage(formatName: String = "png"): BufferedImage {
+fun JavaBufferedImage.toMiraiImage(formatName: String = "gif"): BufferedImage {
     val digest = MessageDigest.getInstance("md5")
     digest.reset()
 

mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/utils/PlatformUtilsJvm.kt

@@ -72,7 +72,7 @@ private suspend fun Connection.postImage(image: ByteReadPacket): Boolean = this
         .requestBody(String(image.readBytes(), Charsets.ISO_8859_1))
         .method(Connection.Method.POST)
         .postDataCharset("ISO_8859_1")
-        .header("Content-type", "image/png")
+        .header("Content-type", "image/gif")
         .ignoreContentType(true)
         .suspendExecute()
         .statusCode() == 200

mirai-core/src/jvmTest/kotlin/TestGroupImage.kt

@@ -11,7 +11,7 @@ import javax.imageio.ImageIO
 val sessionKey: ByteArray = "F1 ED F2 BC 55 17 7B FE CC CC F3 08 D1 8D A7 0E".hexToBytes()
 
 fun main() = println({
-    val image = ImageIO.read(File("C:\\Users\\Him18\\Desktop\\test2.png").readBytes().inputStream()).toMiraiImage("png")
+    val image = ImageIO.read(File("C:\\Users\\Him18\\Desktop\\test2.gif").readBytes().inputStream()).toMiraiImage("png")
 
     // File("C:\\Users\\Him18\\Desktop\\test2.jpg").writeBytes(image.fileData.readBytes())
     GroupImageIdRequestPacket(

mirai-demos/mirai-demo-1/src/main/java/demo1/Main.kt

@@ -87,14 +87,14 @@ suspend fun main() {
 
             "上传好友图片" in it.message -> withTimeoutOrNull(5000) {
                 val id = QQ(bot, 1040400290u)
-                        .uploadImage(withContext(Dispatchers.IO) { ImageIO.read(File("C:\\Users\\Him18\\Desktop\\${it.message.toString().substringAfter("上传好友图片")}").readBytes().inputStream()) }.toMiraiImage("png"))
+                        .uploadImage(withContext(Dispatchers.IO) { ImageIO.read(File("C:\\Users\\Him18\\Desktop\\${it.message.toString().substringAfter("上传好友图片")}").inputStream()) }.toMiraiImage("gif"))
                 it.reply(id.value)
                 delay(1000)
                 it.reply(Image(id))
             }
 
             "上传群图片" in it.message -> withTimeoutOrNull(5000) {
-                val image = withContext(Dispatchers.IO) { ImageIO.read(File("C:\\Users\\Him18\\Desktop\\${it.message.toString().substringAfter("上传群图片")}").readBytes().inputStream()) }.toMiraiImage("png")
+                val image = withContext(Dispatchers.IO) { ImageIO.read(File("C:\\Users\\Him18\\Desktop\\${it.message.toString().substringAfter("上传群图片")}").inputStream()) }.toMiraiImage("gif")
                 Group(bot, 580266363u).uploadImage(image)
                 it.reply(image.groupImageId.value)
                 delay(1000)