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提交代码
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2
pom.xml
2
pom.xml
@ -3,7 +3,7 @@
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<modelVersion>4.0.0</modelVersion>
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<groupId>EasyCaptcha</groupId>
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<artifactId>EasyCaptcha</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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<version>1.1.0-RELEASE</version>
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<name>EasyCaptcha</name>
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<dependencies>
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@ -2,45 +2,37 @@ package com.wf.captcha.servlet;
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import java.io.IOException;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import com.wf.captcha.Captcha;
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import com.wf.captcha.GifCaptcha;
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import com.wf.captcha.utils.CaptchaUtil;
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/**
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* 验证码servlet
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*
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* @author wangfan
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* @date 2018-5-14 上午9:53:01
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*/
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public class CaptchaServlet extends HttpServlet {
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private static final long serialVersionUID = -90304944339413093L;
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public void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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//获取codeKey
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String codeKey = request.getParameter("codeKey");
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if(codeKey==null||codeKey.trim().isEmpty()){
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return;
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}
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//设置输出图片
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response.setContentType("image/gif");
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response.setHeader("Pragma", "No-cache");
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response.setHeader("Cache-Control", "no-cache");
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response.setDateHeader("Expires", 0);
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// gif验证码, 宽、高、位数
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Captcha captcha = new GifCaptcha(130,38,5);
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// 存入servletContext
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ServletContext servletContext = request.getSession().getServletContext();
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servletContext.setAttribute("code_"+codeKey, captcha.text().toLowerCase());
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//输入图片
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captcha.out(response.getOutputStream());
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// 是否有key决定是存在session中还是servletContext中
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String key = request.getParameter("key");
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CaptchaUtil cu = new CaptchaUtil();
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if (key != null && !key.trim().isEmpty()) {
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cu.out(key, request, response);
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} else {
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cu.out(request, response);
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}
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}
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public void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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doGet(request, response);
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}
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}
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@ -1,24 +1,146 @@
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package com.wf.captcha.utils;
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import java.io.IOException;
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import com.wf.captcha.Captcha;
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import com.wf.captcha.GifCaptcha;
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/**
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* 图形验证码工具类
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*
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* @author wangfan
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* @date 2018-5-14 上午9:41:06
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*/
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public class CaptchaUtil {
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private String codeName = "captcha";
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private int width = 130;
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private int height = 38;
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private int len = 5;
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public CaptchaUtil() {
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}
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/**
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* 验证码的宽、高、位数
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*/
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public CaptchaUtil(int width, int height, int len) {
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set(width, height, len);
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}
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/**
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* 验证验证码
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*
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* @param verKey
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* @param verCode
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* @param request
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* @return
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*/
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public static boolean isVerified(String verKey, String verCode,
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HttpServletRequest request) {
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ServletContext servletContext = request.getSession()
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.getServletContext();
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String cacheVerCode = (String) servletContext.getAttribute("code_"
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+ verKey);
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return verCode.equals(cacheVerCode);
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public boolean ver(String code, HttpServletRequest request) {
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String captcha = (String) request.getSession().getAttribute(codeName);
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return code.equals(captcha);
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}
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/**
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* 验证验证码,用于分离的项目
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*/
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public boolean ver(String key, String code, HttpServletRequest rq) {
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ServletContext sc = rq.getServletContext();
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String keyName = codeName + "-" + key;
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String captcha = (String) sc.getAttribute(keyName);
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return code.equals(captcha);
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}
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/**
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* 输出验证码
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*/
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public void out(HttpServletRequest rq, HttpServletResponse rp)
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throws IOException {
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setHeader(rp);
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// 验证码的宽、高、位数
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Captcha captcha = new GifCaptcha(width, height, len);
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// 存入缓存
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rq.getSession().setAttribute(codeName, captcha.text().toLowerCase());
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// 输入图片
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captcha.out(rp.getOutputStream());
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}
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/**
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* 输出验证码,用于分离项目
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*/
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public void out(String key, HttpServletRequest rq, HttpServletResponse rp)
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throws IOException {
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setHeader(rp);
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// 验证码的宽、高、位数
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Captcha captcha = new GifCaptcha(width, height, len);
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// 存入缓存
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ServletContext sc = rq.getServletContext();
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sc.setAttribute(codeName, captcha.text().toLowerCase());
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// 输入图片
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captcha.out(rp.getOutputStream());
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}
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private void setHeader(HttpServletResponse rp) {
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rp.setContentType("image/gif");
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rp.setHeader("Pragma", "No-cache");
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rp.setHeader("Cache-Control", "no-cache");
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rp.setDateHeader("Expires", 0);
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}
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public String getCodeName() {
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return codeName;
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}
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/**
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* 设置保存code的key
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*/
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public void setCodeName(String codeName) {
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this.codeName = codeName;
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}
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public int getWidth() {
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return width;
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}
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/**
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* 设置验证码的宽度
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*/
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public void setWidth(int width) {
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this.width = width;
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}
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public int getHeight() {
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return height;
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}
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/**
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* 设置验证码的高度
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*/
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public void setHeight(int height) {
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this.height = height;
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}
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public int getLen() {
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return len;
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}
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/**
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* 设置验证码的位数
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*/
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public void setLen(int len) {
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this.len = len;
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}
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/**
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* 设置验证码的宽、高、位数
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*/
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public void set(int width, int height, int len) {
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setWidth(width);
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setHeight(height);
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setLen(len);
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}
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}
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