在注册登录的时候,一般要给新用户一个头像,想过用那种默认的头像,觉得很丑。

突然想到钉钉的用户默认头像



当然,这种样式在华为手机通讯录里也见过(有些主题有)。

于是,也准备模仿一下。

 

先上最终的效果图

超级截屏_20180412_001720.png


 

 

代码如下

package com.liuyanzhao.chuyun.util;

import java.awt.*;

import java.awt.geom.RoundRectangle2D;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.util.Random;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.imageio.ImageIO;

/**

 * 根据姓名创建图片

 */

public class CreateNamePicture {

    /**

     * @throws IOException

     * @throws

     **/

    public static void main(String[] args) throws IOException {

        String name = "刘言曌爱罗琪";

        generateImg(name, "/Users/liuyanzhao/Desktop/temp", name);

    }

    /**

     * 绘制字体头像

     * 如果是英文名,只显示首字母大写

     * 如果是中文名,只显示最后两个字

     * @param name

     * @param outputPath

     * @param outputName

     * @throws IOException

     */

    public static void generateImg(String name, String outputPath, String outputName)

            throws IOException {

        int width = 100;

        int height = 100;

        int nameLen = name.length();

        String nameWritten;

        //如果用户输入的姓名少于等于2个字符,不用截取

        if (nameLen <= 2) {

            nameWritten = name;

        } else {

            //如果用户输入的姓名大于等于3个字符,截取后面两位

            String first = name.substring(0, 1);

            if (isChinese(first)) {

                //截取倒数两位汉字

                nameWritten = name.substring(nameLen - 2);

            } else {

                //截取前面的两个英文字母

                nameWritten = name.substring(0, 2).toUpperCase();

            }

        }

        String filename = outputPath + File.separator + outputName + ".jpg";

        File file = new File(filename);

        //Font font = new Font("微软雅黑", Font.PLAIN, 30);

        BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

        Graphics2D g2 = (Graphics2D) bi.getGraphics();

        g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,

                RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

        g2.setBackground(getRandomColor());

        g2.clearRect(0, 0, width, height);

        g2.setPaint(Color.WHITE);

        Font font = null;

        //两个字及以上

        if(nameWritten.length() >= 2) {

            font = new Font("微软雅黑", Font.PLAIN, 30);

            g2.setFont(font);

            String firstWritten = nameWritten.substring(0, 1);

            String secondWritten = nameWritten.substring(1, 2);

            //两个中文 如 言曌

            if (isChinese(firstWritten) && isChinese(secondWritten)) {

                g2.drawString(nameWritten, 20, 60);

            }

            //首中次英 如 罗Q

            else if (isChinese(firstWritten) && !isChinese(secondWritten)) {

                g2.drawString(nameWritten, 27, 60);

                //首英,如 AB

            } else {

                nameWritten = nameWritten.substring(0,1);

            }

        }

        //一个字

        if(nameWritten.length() ==1) {

            //中文

            if(isChinese(nameWritten)) {

                font = new Font("微软雅黑", Font.PLAIN, 50);

                g2.setFont(font);

                g2.drawString(nameWritten, 25, 70);

            }

            //英文

            else {

                font = new Font("微软雅黑", Font.PLAIN, 55);

                g2.setFont(font);

                g2.drawString(nameWritten.toUpperCase(), 33, 67);

            }

        }

        BufferedImage rounded = makeRoundedCorner(bi, 99);

        ImageIO.write(rounded, "png", file);

    }

    /**

     * 判断字符串是否为中文

     * @param str

     * @return

     */

    public static boolean isChinese(String str) {

        String regEx = "[\\u4e00-\\u9fa5]+";

        Pattern p = Pattern.compile(regEx);

        Matcher m = p.matcher(str);

        if (m.find())

            return true;

        else

            return false;

    }

    /**

     * 获得随机颜色

     * @return

     */

    private static Color getRandomColor() {

        String[] beautifulColors =

                new String[]{"232,221,203", "205,179,128", "3,101,100", "3,54,73", "3,22,52",

                        "237,222,139", "251,178,23", "96,143,159", "1,77,103", "254,67,101", "252,157,154",

                        "249,205,173", "200,200,169", "131,175,155", "229,187,129", "161,23,21", "34,8,7",

                        "118,77,57", "17,63,61", "60,79,57", "95,92,51", "179,214,110", "248,147,29",

                        "227,160,93", "178,190,126", "114,111,238", "56,13,49", "89,61,67", "250,218,141",

                        "3,38,58", "179,168,150", "222,125,44", "20,68,106", "130,57,53", "137,190,178",

                        "201,186,131", "222,211,140", "222,156,83", "23,44,60", "39,72,98", "153,80,84",

                        "217,104,49", "230,179,61", "174,221,129", "107,194,53", "6,128,67", "38,157,128",

                        "178,200,187", "69,137,148", "117,121,71", "114,83,52", "87,105,60", "82,75,46",

                        "171,92,37", "100,107,48", "98,65,24", "54,37,17", "137,157,192", "250,227,113",

                        "29,131,8", "220,87,18", "29,191,151", "35,235,185", "213,26,33", "160,191,124",

                        "101,147,74", "64,116,52", "255,150,128", "255,94,72", "38,188,213", "167,220,224",

                        "1,165,175", "179,214,110", "248,147,29", "230,155,3", "209,73,78", "62,188,202",

                        "224,160,158", "161,47,47", "0,90,171", "107,194,53", "174,221,129", "6,128,67",

                        "38,157,128", "201,138,131", "220,162,151", "137,157,192", "175,215,237", "92,167,186",

                        "255,66,93", "147,224,255", "247,68,97", "185,227,217"};

        int len = beautifulColors.length;

        Random random = new Random();

        String[] color = beautifulColors[random.nextInt(len)].split(",");

        return new Color(Integer.parseInt(color[0]), Integer.parseInt(color[1]),

                Integer.parseInt(color[2]));

    }

    /**

     * 图片做圆角处理

     * @param image

     * @param cornerRadius

     * @return

     */

    public static BufferedImage makeRoundedCorner(BufferedImage image, int cornerRadius) {

        int w = image.getWidth();

        int h = image.getHeight();

        BufferedImage output = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);

        Graphics2D g2 = output.createGraphics();

        g2.setComposite(AlphaComposite.Src);

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        g2.setColor(Color.WHITE);

        g2.fill(new RoundRectangle2D.Float(0, 0, w, h, cornerRadius, cornerRadius));

        g2.setComposite(AlphaComposite.SrcAtop);

        g2.drawImage(image, 0, 0, null);

        g2.dispose();

        return output;

    }

}

 

代码下载地址:https://github.com/saysky/CreateNamePicture

转载请注明出处:红色火线加油站!http://hongsehuoxian.com
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以上就是红色火线JAVA加油站整理的关于Java 根据用户名生成字体头像,仿钉钉、通讯录样式的文章,
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