java 在图片上写字,两个图片合并的实现方法

实例如下：

package writeimg;
import javax.imageio.ImageIO;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL; 

public class pic { 

  private Font font = new Font("华文彩云", Font.PLAIN, 40);// 添加字体的属性设置 

  private Graphics2D g = null; 

  private int fontsize = 0; 

  private int x = 0; 

  private int y = 0; 

  /**
   * 导入本地图片到缓冲区
   */
  public BufferedImage loadImageLocal(String imgName) {
    try {
      return ImageIO.read(new File(imgName));
    } catch (IOException e) {
      System.out.println(e.getMessage());
    }
    return null;
  } 

  /**
   * 导入网络图片到缓冲区
   */
  public BufferedImage loadImageUrl(String imgName) {
    try {
      URL url = new URL(imgName);
      return ImageIO.read(url);
    } catch (IOException e) {
      System.out.println(e.getMessage());
    }
    return null;
  } 

  /**
   * 生成新图片到本地
   */
  public void writeImageLocal(String newImage, BufferedImage img) {
    if (newImage != null && img != null) {
      try {
        File outputfile = new File(newImage);
        ImageIO.write(img, "jpg", outputfile);
      } catch (IOException e) {
        System.out.println(e.getMessage());
      }
    }
  } 

  /**
   * 设定文字的字体等
   */
  public void setFont(String fontStyle, int fontSize) {
    this.fontsize = fontSize;
    this.font = new Font(fontStyle, Font.PLAIN, fontSize);
  } 

  /**
   * 修改图片,返回修改后的图片缓冲区（只输出一行文本）
   */
  public BufferedImage modifyImage(BufferedImage img, Object content, int x,
      int y) { 

    try {
      int w = img.getWidth();
      int h = img.getHeight();
      g = img.createGraphics();
      g.setBackground(Color.WHITE);
      g.setColor(Color.orange);//设置字体颜色
      if (this.font != null)
        g.setFont(this.font);
      // 验证输出位置的纵坐标和横坐标
      if (x >= h || y >= w) {
        this.x = h - this.fontsize + 2;
        this.y = w;
      } else {
        this.x = x;
        this.y = y;
      }
      if (content != null) {
        g.drawString(content.toString(), this.x, this.y);
      }
      g.dispose();
    } catch (Exception e) {
      System.out.println(e.getMessage());
    } 

    return img;
  } 

  /**
   * 修改图片,返回修改后的图片缓冲区（输出多个文本段） xory：true表示将内容在一行中输出；false表示将内容多行输出
   */
  public BufferedImage modifyImage(BufferedImage img, Object[] contentArr,
      int x, int y, boolean xory) {
    try {
      int w = img.getWidth();
      int h = img.getHeight();
      g = img.createGraphics();
      g.setBackground(Color.WHITE);
      g.setColor(Color.RED);
      if (this.font != null)
        g.setFont(this.font);
      // 验证输出位置的纵坐标和横坐标
      if (x >= h || y >= w) {
        this.x = h - this.fontsize + 2;
        this.y = w;
      } else {
        this.x = x;
        this.y = y;
      }
      if (contentArr != null) {
        int arrlen = contentArr.length;
        if (xory) {
          for (int i = 0; i < arrlen; i++) {
            g.drawString(contentArr[i].toString(), this.x, this.y);
            this.x += contentArr[i].toString().length()
                * this.fontsize / 2 + 5;// 重新计算文本输出位置
          }
        } else {
          for (int i = 0; i < arrlen; i++) {
            g.drawString(contentArr[i].toString(), this.x, this.y);
            this.y += this.fontsize + 2;// 重新计算文本输出位置
          }
        }
      }
      g.dispose();
    } catch (Exception e) {
      System.out.println(e.getMessage());
    } 

    return img;
  } 

  /**
   * 修改图片,返回修改后的图片缓冲区（只输出一行文本）
   *
   * 时间:2007-10-8
   *
   * @param img
   * @return
   */
  public BufferedImage modifyImageYe(BufferedImage img) { 

    try {
      int w = img.getWidth();
      int h = img.getHeight();
      g = img.createGraphics();
      g.setBackground(Color.WHITE);
      g.setColor(Color.blue);//设置字体颜色
      if (this.font != null)
        g.setFont(this.font);
      g.drawString("reyo.cn", w - 85, h - 5);
      g.dispose();
    } catch (Exception e) {
      System.out.println(e.getMessage());
    } 

    return img;
  } 

  public BufferedImage modifyImagetogeter(BufferedImage b, BufferedImage d) { 

    try {
      int w = b.getWidth();
      int h = b.getHeight(); 

      g = d.createGraphics();
      g.drawImage(b, 100, 10, w, h, null);
      g.dispose();
    } catch (Exception e) {
      System.out.println(e.getMessage());
    } 

    return d;
  } 

  public static void main(String[] args) { 

    pic tt = new pic(); 

    BufferedImage d = tt.loadImageLocal("D:\\11.jpg");
//   BufferedImage b = tt
//       .loadImageLocal("E:\\文件(word,excel,pdf,ppt.txt)\\zte-logo.png");
     tt.writeImageLocal("D:\\cc.jpg",tt.modifyImage(d,"西昌苹果",90,90)
    //往图片上写文件
     ); 

    //tt.writeImageLocal("D:\\cc.jpg", tt.modifyImagetogeter(b, d));
    //将多张图片合在一起
    System.out.println("success");
  } 

}

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