java后台代码如何控制文字大小
我们要通过java语言生成图片
不用到页面 所以只能通过java代码控制文字的颜色 大小
所以想请教一下 如何控制
写详细一点啊
css不能用 style属性也没有
反正一切和页面相关的代码都不能
[解决办法]
import java.awt.Color;
import java.awt.Font;
import com.octo.captcha.component.image.backgroundgenerator.BackgroundGenerator;
import com.octo.captcha.component.image.backgroundgenerator.FileReaderRandomBackgroundGenerator;
import com.octo.captcha.component.image.color.RandomListColorGenerator;
import com.octo.captcha.component.image.fontgenerator.FontGenerator;
import com.octo.captcha.component.image.fontgenerator.RandomFontGenerator;
import com.octo.captcha.component.image.textpaster.DecoratedRandomTextPaster;
import com.octo.captcha.component.image.textpaster.TextPaster;
import com.octo.captcha.component.image.textpaster.textdecorator.TextDecorator;
import com.octo.captcha.component.image.wordtoimage.ComposedWordToImage;
import com.octo.captcha.component.image.wordtoimage.WordToImage;
import com.octo.captcha.component.word.wordgenerator.RandomWordGenerator;
import com.octo.captcha.component.word.wordgenerator.WordGenerator;
import com.octo.captcha.engine.image.ListImageCaptchaEngine;
import com.octo.captcha.image.gimpy.GimpyFactory;
public class CaptchaEngine extends ListImageCaptchaEngine {
public static final String IMAGE_CAPTCHA_KEY = "imageCaptcha";// ImageCaptcha对象存放在Session中的key
public static final String CAPTCHA_PARAMETER_NAME = "j_captcha";// 验证码输入表单名称
public static final String CAPTCHA_IMAGE_URL = "/captcha.jpeg";// 验证码图片URL
private static final Integer MIN_WORD_LENGTH = 4;// 验证码最小长度
private static final Integer MAX_WORD_LENGTH = 4;// 验证码最大长度
private static final Integer IMAGE_HEIGHT = 28;// 验证码图片高度
private static final Integer IMAGE_WIDTH = 80;// 验证码图片宽度
private static final Integer MIN_FONT_SIZE = 16;// 验证码最小字体
private static final Integer MAX_FONT_SIZE = 16;// 验证码最大字体
private static final String RANDOM_WORD = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";// 随机字符
private static final String IMAGE_PATH = "./com/captcha/";// 随机背景图片路径
// 验证码随机字体
private static final Font[] RANDOM_FONT = new Font[] {
new Font("nyala", Font.BOLD, MIN_FONT_SIZE),
new Font("Arial", Font.BOLD, MIN_FONT_SIZE),
new Font("Bell MT", Font.BOLD, MIN_FONT_SIZE),
new Font("Credit valley", Font.BOLD, MIN_FONT_SIZE),
new Font("Impact", Font.BOLD, MIN_FONT_SIZE)
};
// 验证码随机颜色
private static final Color[] RANDOM_COLOR = new Color[] {
new Color(255, 255, 255),
new Color(255, 220, 220),
new Color(220, 255, 255),
new Color(220, 220, 255),
new Color(255, 255, 220),
new Color(220, 255, 220)
};
// 生成验证码
@Override
protected void buildInitialFactories() {
RandomListColorGenerator randomListColorGenerator = new RandomListColorGenerator(RANDOM_COLOR);
BackgroundGenerator backgroundGenerator = new FileReaderRandomBackgroundGenerator(IMAGE_WIDTH, IMAGE_HEIGHT, IMAGE_PATH);
WordGenerator wordGenerator = new RandomWordGenerator(RANDOM_WORD);
FontGenerator fontGenerator = new RandomFontGenerator(MIN_FONT_SIZE, MAX_FONT_SIZE, RANDOM_FONT);
TextDecorator[] textDecorator = new TextDecorator[] {};
TextPaster textPaster = new DecoratedRandomTextPaster(MIN_WORD_LENGTH, MAX_WORD_LENGTH, randomListColorGenerator, textDecorator);
WordToImage wordToImage = new ComposedWordToImage(fontGenerator, backgroundGenerator, textPaster);
addFactory(new GimpyFactory(wordGenerator, wordToImage));
}
}
[解决办法]
来灌水
[解决办法]
考虑用spring吧
[解决办法]
对以后的登录验证，论坛回复很有用。 很感谢一楼的分享
