java 图片添加水印

package org.my.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class Config {
    
    private static String filePath = "C:/Users/issuser/Desktop/a-z";
    
    public static int[][] getBinArr(String c){
        
        int[][] arr = new int[16][8];
        
        File f = new File(filePath+"/"+c+".txt");
        try {
            BufferedReader reader = new BufferedReader(new FileReader(f));
            for(int i=0;i<16;i++){
                String s = reader.readLine();
                for(int j=0;j<8;j++){
                    if('1'==s.charAt(j)){
                        arr[i][j] = 1;
                    }else{
                        arr[i][j] = 0;
                    }
                }
            }
            reader.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        return arr;
        
    }
    
    public static int[][] reorg(int[][] a,int[][] b){
        
        int al = a[0].length;
        int bl = b[0].length;
        int[][] r = new int[a.length][al+bl];
        
        for(int i=0;i<a.length;i++){
            for(int j=0;j<a[i].length;j++){
                r[i][j]=a[i][j];
            }
        }
        
        for(int i=0;i<b.length;i++){
            for(int j=0;j<b[i].length;j++){
                r[i][j+al]=b[i][j];
            }
        }
        return r;
    }

}

package org.my.main;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.imageio.ImageIO;

import org.my.util.Config;

public class TestABC {

    
    private static Map<String,int[][]> map = new HashMap<String,int[][]>();
    
    public static void main(String[] args) throws IOException {
        
        initMap();
        
        String str = "The first step is as good as half over.***pYou never know your luck.***pSow nothing, reap nothing.***pThe wealth of the mind is the only wealth.";
        
        List<int[][]> list = new ArrayList<int[][]>();
        
        String[] strarr = str.split("\\*\\*\\*p");
        
        for(String strs : strarr){
            list.add(toArr(strs));
        }
        
        
        //int[][] tmp = toArr(str);
        
        BufferedImage bi = ImageIO.read(new File("C:/Users/issuser/Desktop/desktop.jpg"));
        
        writeLine(bi,560,360,list);
        
        ImageIO.write(bi, "jpg", new FileOutputStream(new File("C:/Users/issuser/Desktop/desktop-bak.jpg")));
        
    }
    
    private static void out(int[][] tmp){
        
        
        for(int i=0;i<tmp.length;i++){
            
            for(int j=0;j<tmp[i].length;j++){
                System.out.print(tmp[i][j]);
                
            }
            System.out.println();
        }
        
        
    }
    
    private static void initMap(){
        String[] cs = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o",
                "p","q","r","s","t","u","v","w","x","y","z","space","comma","point"};
        
        for(int i=0;i<cs.length;i++){
            map.put(cs[i], Config.getBinArr(cs[i]));
        }
    }
    
    private static int[][] toArr(String str){
        
        int[][] tmp = Config.getBinArr(str.charAt(0)+"");
        for(int i=1;i<str.length();i++){
            if(str.charAt(i)==' '){
                tmp = Config.reorg(tmp, map.get("space"));
            }else if(str.charAt(i)==','){
                tmp = Config.reorg(tmp, map.get("comma"));
            }else if(str.charAt(i)=='.'){
                tmp = Config.reorg(tmp, map.get("point"));
            }else{
                tmp = Config.reorg(tmp, map.get(""+str.charAt(i)));
            }
        }
        
        return tmp;
    }
    
    private static void writeLine(BufferedImage bi,int x,int y,List<int[][]> list){
        
        
        for(int[][] data : list){
            insert(bi,x,y,data);
            y+=16;
        }
        
    }
    
    private static void insert(BufferedImage bi,int x,int y,int [][] data){
        
        for(int i=0;i<data.length;i++){
            
            for(int j=0;j<data[i].length;j++){
                
                if(data[i][j]==1){
                    bi.setRGB(x+j, y+i, 0x00ffffff); 
                }
                
            }
        }
        
    }

}
字符文件地址
https://files.cnblogs.com/files/cfdx/a-z.rar