30 lines
1.0 KiB
Java
30 lines
1.0 KiB
Java
package com.qf.controller;
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import cn.dsna.util.images.ValidateCode;
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import javax.servlet.ServletOutputStream;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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/**
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* @author 小灰灰呀
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*/
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@WebServlet("/code")
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public class CodeController extends BaseServlet {
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public void createCode(HttpServletRequest request, HttpServletResponse response) throws IOException {
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//1.生成验证码的对象
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ValidateCode validateCode = new ValidateCode(100, 35, 4, 25);
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//2.获取到对应的验证码
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String code = validateCode.getCode();
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//3.将获取到的验证码存到session中
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request.getSession().setAttribute("code", code);
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//4.创建出对应的字节文件对象
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ServletOutputStream outputStream = response.getOutputStream();
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//写回 表示验证码通过这个字节文件写回页面
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validateCode.write(outputStream);
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}
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}
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