package com.xcong.farmer.cms.modules.system.util;
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import com.google.code.kaptcha.impl.DefaultKaptcha;
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import com.xcong.farmer.cms.common.response.Result;
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import com.xcong.farmer.cms.modules.system.service.ICommonService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import sun.misc.BASE64Encoder;
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import javax.imageio.ImageIO;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.Map;
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@Component
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public class CaptchaUtil {
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@Autowired
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private DefaultKaptcha producer;
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@Autowired
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private ICommonService iCommonService;
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//生成catchCreator的map
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public Result catchaImgCreator() throws IOException {
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//生成文字验证码
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String text = producer.createText();
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//生成文字对应的图片验证码
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BufferedImage image = producer.createImage(text);
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//将图片写出
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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ImageIO.write(image, "jpg", outputStream);
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//对写出的字节数组进行Base64编码 ==> 用于传递8比特字节码
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BASE64Encoder encoder = new BASE64Encoder();
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//生成token
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Map<String, Object> token = iCommonService.createToken(text);
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token.put("img", encoder.encode(outputStream.toByteArray()));
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return Result.ok(token);
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}
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}
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