姓名倒转写入到图片

package com.tbc.app.tam.main;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;

public class TextChangToImage {

  /**
   * 创建图片
   * @param image 图片对象
   * @param fileLocation 图片路径
   */
  void createImage(BufferedImage image ,String fileLocation) {
    try {
      FileOutputStream fos = new FileOutputStream(fileLocation);
      BufferedOutputStream bos = new BufferedOutputStream(fos);
      JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos);
      encoder.encode(image);
      bos.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  /**
   * 将文本绘制到图片上
   * @param text   文本
   * @param imgurl  生成的图片路径
   */
  public void graphicsGeneration(String text, String imgurl) {

    int imageWidth = 600;// 图片的宽度
    int imageHeight = 250;// 图片的高度
    int textMaxWidth = 450;

    BufferedImage image = new BufferedImage(imageWidth, imageHeight,BufferedImage.TYPE_INT_RGB);
    Graphics graphics = image.getGraphics();
    graphics.setColor(Color.WHITE);
    graphics.fillRect(0, 0, imageWidth, imageHeight);
    graphics.setColor(Color.BLACK);
    graphics.setFont(new Font("微软雅黑", 0, 100));
    int stringWidth = graphics.getFontMetrics().stringWidth(text);
    if(800<stringWidth && stringWidth<=1000){     //限制了图片大小，根据文本字数限制更改文字大小
      graphics.setFont(new Font("微软雅黑", 0, 90));
    }else if(1000<stringWidth && stringWidth <=1800){
      graphics.setFont(new Font("微软雅黑", 0, 65));
    }else if(1800<stringWidth && stringWidth<=4000){
      graphics.setFont(new Font("微软雅黑", 0, 45));
    }else if(4000<stringWidth && stringWidth <=6000){
      graphics.setFont(new Font("微软雅黑", 0, 35));
    }
    int stringAscent = graphics.getFontMetrics().getAscent();
    int textHeight = 100;
    int j=0;
    if(stringWidth <= textMaxWidth){
      graphics.drawString(text, imageWidth/2-stringWidth/2, textHeight);
    }else{
      int textWidth = 0;
      StringBuffer strBuffer = new StringBuffer();
      int textCount = 1;
      for (int i = 0;i < text.length();i++) {
        String tempStr = String.valueOf(text.charAt(i));
        int tempWidth = graphics.getFontMetrics().stringWidth(tempStr);
        if((textWidth + tempWidth)>textMaxWidth){ //大于固定的文本宽度则换行
          int textHeightTemp = graphics.getFontMetrics().stringWidth(strBuffer.toString());
          graphics.drawString(strBuffer.toString(), imageWidth/2-textHeightTemp/2, textHeight);
          textHeight+=stringAscent;
          textWidth = tempWidth;
          strBuffer.setLength(0);
        }else{
          textWidth += tempWidth;
        }
        strBuffer.append(tempStr);
        if(i == text.length()-1){
          String textTemp = strBuffer.toString();
          int textHeightTemp = graphics.getFontMetrics().stringWidth(textTemp);
          graphics.drawString(strBuffer.toString(), imageWidth/2-textHeightTemp/2, textHeight);
        }
      }
    }

    BufferedImage bimg = null;
    try {
      bimg = javax.imageio.ImageIO.read(new java.io.File(imgurl));
    } catch (Exception e) {
    }

    if (bimg != null)
      graphics.drawImage(bimg, 230, 0, null);
    graphics.dispose();
    image = rotateImage(image,180);  //对绘制的图片做旋转
    createImage(image,imgurl);

  }

  public static void main(String[] args) {
    TextChangToImage cg = new TextChangToImage();
    try {
      cg.graphicsGeneration("张三李四王五", "D://8.jpg");
      /* BufferedImage src = ImageIO.read(new File("d:/8.jpg"));
      BufferedImage des = rotateImage(src, 90);  //对已有的图片进行旋转
      Assert.assertNotNull(des);
      Assert.assertTrue(ImageIO.write(des, "jpg", new File("d:/dog2.jpg")));
      */
    } catch (Exception e) {
      e.printStackTrace();
    }


  }

  /**
   * 旋转图片（该方法对180、360以外的角度旋转会更改图片长宽）
   * @param bufferedimage 图片对象
   * @param degree  旋转角度
   * @return
   */
  public static BufferedImage rotateImage(final BufferedImage bufferedimage,
                      final int degree) {
    int w = bufferedimage.getWidth();
    int h = bufferedimage.getHeight();
    int type = bufferedimage.getColorModel().getTransparency();
    BufferedImage img;
    Graphics2D graphics2d;
    (graphics2d = (img = new BufferedImage(w, h, type))
        .createGraphics()).setRenderingHint(
        RenderingHints.KEY_INTERPOLATION,
        RenderingHints.VALUE_INTERPOLATION_BILINEAR);
    graphics2d.rotate(Math.toRadians(degree), w / 2, h / 2);
    graphics2d.drawImage(bufferedimage, 0, 0, null);
    graphics2d.dispose();
    return img;
  }
}

原标题：姓名倒转写入到图片

关键词：图片