場景:将圖檔的名稱合成到圖檔中
@Test
public void composePic(){
String source = "E:\\file\\1002610028100005.jpg";
String back = "E:\\file\\bg.jpg";
String fileType = "jpg";
try {
if(source == null || StringUtils.isBlank(source)){
File file = new File(source);
if(!file.isFile()){
System.out.println("圖檔源路徑不是一個檔案");
}
System.out.println("圖檔源路徑不存在");
}
if(back == null || StringUtils.isBlank(back)){
File file = new File(back);
if(!file.isFile()){
System.out.println("背景圖檔路徑不是一個檔案");
}
System.out.println("背景圖檔路徑不存在");
}
if(fileType == null || StringUtils.isBlank(fileType)){
System.out.println("圖檔類型不存在");
}
File sourceFile = new File(source);
String fileName = (sourceFile.getName().substring(0,16));
BufferedImage img = new BufferedImage(800, 800, BufferedImage.TYPE_INT_RGB);//建立圖檔
BufferedImage bg = ImageIO.read(new File(back));//讀取本地圖檔
BufferedImage logo = ImageIO.read(sourceFile);
Graphics g = img.getGraphics();//開啟畫圖
g.drawImage(bg.getScaledInstance(800, 800, Image.SCALE_DEFAULT), 0, 0, null); // 繪制縮小後的圖
g.drawImage(logo.getScaledInstance(690, 690, Image.SCALE_DEFAULT), 55, 25, null); // 繪制縮小後的圖
g.setColor(Color.black);
g.setFont(new Font(fileName, Font.PLAIN, 65));
g.drawString(fileName, 110, 770);//繪制文字
g.dispose();
ImageIO.write(img, fileType, new File(source));
System.out.println("圖檔合成成功");
} catch (Exception E) {
E.printStackTrace();
System.out.println("圖檔合成失敗");
}
}
代碼執行結果: