我有一個字符串,對此我將其轉換成字節[],然後我編寫代碼的時候帶回形象,但問題是,它沒有創造它回圖像文本文件,圖像轉換
BufferedReader reader2 = new BufferedReader(new FileReader("e:\\imageinString.txt"));
String buffer, lined = "";
while ((buffer = reader2.readLine()) != null) {
lined = lined + buffer;
}
byte[] byteArray = lined.getBytes("UTF-16");
InputStream in = new ByteArrayInputStream(byteArray);
BufferedImage bImageFromConvert = ImageIO.read(in);
ImageIO.write(bImageFromConvert, "bmp", new File("e:\\ppp.bmp"));
reader2.close();
我得到這個錯誤,但我在控制檯上
Exception in thread "main" java.lang.IllegalArgumentException: image == null!
at javax.imageio.ImageTypeSpecifier.createFromRenderedImage(ImageTypeSpecifier.java:925)
at javax.imageio.ImageIO.getWriter(ImageIO.java:1591)
at javax.imageio.ImageIO.write(ImageIO.java:1520)
at imagereading.Imagereading.main(Imagereading.java:47)
1)你不能指望'字符串'字節寫入圖像!您需要創建一個'BufferedImage',從圖像中獲取'Graphics'對象,將文本寫入該圖像,然後保存圖像。 2)爲什麼,*爲什麼,* ***爲什麼地球上的人們想把完美的文字轉化爲圖像? –
即使將字符串轉換爲字節,字節內容仍然是字符串而不是圖像。它只是改變它的形式。 – Mawia