loser/EasyCaptcha
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增加内置字体、贝塞尔曲线、算术验证码、base64输出

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This commit is contained in:
whvcse@foxmail.com
2019-08-23 23:50:26 +08:00
parent 366f54ea80
commit 8ebe5918c9
12 changed files with 640 additions and 527 deletions
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129
src/main/java/com/wf/captcha/utils/CaptchaUtil.java
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@@ -7,7 +7,6 @@ import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.wf.captcha.base.Captcha;
import com.wf.captcha.GifCaptcha;
import com.wf.captcha.SpecCaptcha;
/**
@@ -16,21 +15,9 @@ import com.wf.captcha.SpecCaptcha;
*/
public class CaptchaUtil {
private static final String SESSION_KEY = "captcha";
/**
* 验证验证码
*
* @param code 用户输入的验证码
* @param request HttpServletRequest
* @return 是否正确
*/
public static boolean ver(String code, HttpServletRequest request) {
if (code != null && !code.trim().isEmpty()) {
String captcha = (String) request.getSession().getAttribute(SESSION_KEY);
return code.trim().toLowerCase().equals(captcha);
}
return false;
}
private static final int DEFAULT_LEN = 4; // 默认长度
private static final int DEFAULT_WIDTH = 130; // 默认宽度
private static final int DEFAULT_HEIGHT = 48; // 默认高度
/**
* 输出验证码
@@ -41,7 +28,7 @@ public class CaptchaUtil {
*/
public static void out(HttpServletRequest request, HttpServletResponse response)
throws IOException {
out(5, request, response);
out(DEFAULT_LEN, request, response);
}
/**
@@ -54,21 +41,7 @@ public class CaptchaUtil {
*/
public static void out(int len, HttpServletRequest request, HttpServletResponse response)
throws IOException {
out(130, 48, len, request, response);
}
/**
* 输出验证码
*
* @param len 长度
* @param font 字体
* @param request HttpServletRequest
* @param response HttpServletResponse
* @throws IOException IO异常
*/
public static void out(int len, Font font, HttpServletRequest request, HttpServletResponse response)
throws IOException {
out(130, 48, len, font, request, response);
out(DEFAULT_WIDTH, DEFAULT_HEIGHT, len, request, response);
}
/**
@@ -89,42 +62,14 @@ public class CaptchaUtil {
/**
* 输出验证码
*
* @param width 宽度
* @param height 高度
* @param len 长度
* @param font 字体
* @param request HttpServletRequest
* @param response HttpServletResponse
* @throws IOException IO异常
*/
public static void out(int width, int height, int len, Font font, HttpServletRequest request, HttpServletResponse response)
public static void out(Font font, HttpServletRequest request, HttpServletResponse response)
throws IOException {
outCaptcha(width, height, len, font, 1, request, response);
}
/**
* 输出验证码
*
* @param request HttpServletRequest
* @param response HttpServletResponse
* @throws IOException IO异常
*/
public static void outPng(HttpServletRequest request, HttpServletResponse response)
throws IOException {
outPng(5, request, response);
}
/**
* 输出验证码
*
* @param len 长度
* @param request HttpServletRequest
* @param response HttpServletResponse
* @throws IOException IO异常
*/
public static void outPng(int len, HttpServletRequest request, HttpServletResponse response)
throws IOException {
outPng(130, 48, len, request, response);
out(DEFAULT_WIDTH, DEFAULT_HEIGHT, DEFAULT_LEN, font, request, response);
}
/**
@@ -136,24 +81,9 @@ public class CaptchaUtil {
* @param response HttpServletResponse
* @throws IOException IO异常
*/
public static void outPng(int len, Font font, HttpServletRequest request, HttpServletResponse response)
public static void out(int len, Font font, HttpServletRequest request, HttpServletResponse response)
throws IOException {
outPng(130, 48, len, font, request, response);
}
/**
* 输出验证码
*
* @param width 宽度
* @param height 高度
* @param len 长度
* @param request HttpServletRequest
* @param response HttpServletResponse
* @throws IOException IO异常
*/
public static void outPng(int width, int height, int len, HttpServletRequest request, HttpServletResponse response)
throws IOException {
outPng(width, height, len, null, request, response);
out(DEFAULT_WIDTH, DEFAULT_HEIGHT, len, font, request, response);
}
/**
@@ -167,39 +97,46 @@ public class CaptchaUtil {
* @param response HttpServletResponse
* @throws IOException IO异常
*/
public static void outPng(int width, int height, int len, Font font, HttpServletRequest request, HttpServletResponse response)
public static void out(int width, int height, int len, Font font, HttpServletRequest request, HttpServletResponse response)
throws IOException {
outCaptcha(width, height, len, font, 0, request, response);
SpecCaptcha specCaptcha = new SpecCaptcha(width, height, len);
if (font != null) {
specCaptcha.setFont(font);
}
out(specCaptcha, request, response);
}
/**
* 输出验证码
*
* @param width 宽度
* @param height 高度
* @param len 长度
* @param font 字体
* @param cType 类型
* @param captcha Captcha
* @param request HttpServletRequest
* @param response HttpServletResponse
* @throws IOException IO异常
*/
private static void outCaptcha(int width, int height, int len, Font font, int cType, HttpServletRequest request, HttpServletResponse response)
private static void out(Captcha captcha, HttpServletRequest request, HttpServletResponse response)
throws IOException {
setHeader(response);
Captcha captcha = null;
if (cType == 0) {
captcha = new SpecCaptcha(width, height, len);
} else if (cType == 1) {
captcha = new GifCaptcha(width, height, len);
}
if (font != null) {
captcha.setFont(font);
}
request.getSession().setAttribute(SESSION_KEY, captcha.text().toLowerCase());
captcha.out(response.getOutputStream());
}
/**
* 验证验证码
*
* @param code 用户输入的验证码
* @param request HttpServletRequest
* @return 是否正确
*/
public static boolean ver(String code, HttpServletRequest request) {
if (code != null) {
String captcha = (String) request.getSession().getAttribute(SESSION_KEY);
return code.trim().toLowerCase().equals(captcha);
}
return false;
}
/**
* 清除session中的验证码
*