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优化验证码效果

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synchronized
2018-07-30 13:10:51 +08:00
parent 74a1991352
commit 92af7138a9
9 changed files with 160 additions and 31 deletions
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2
README.md
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@@ -140,7 +140,7 @@ public class LoginController {
@PostMapping("/login")
public JsonResult login(String username,String password,String code){
if (CaptchaUtil.ver(code, request)) {
if (!CaptchaUtil.ver(code, request)) {
CaptchaUtil.clear(request);
return JsonResult.error("验证码不正确");
}

2
pom.xml
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@@ -5,7 +5,7 @@
<groupId>com.github.whvcse</groupId>
<artifactId>EasyCaptcha</artifactId>
<version>1.3.0-RELEASE</version>
<version>1.3.1-RELEASE</version>
<packaging>jar</packaging>
<name>EasyCaptcha</name>

5
src/main/java/com/wf/captcha/Captcha.java
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@@ -9,7 +9,7 @@ import java.io.OutputStream;
* Created by 王帆 on 2018-07-27 上午 10:08.
*/
public abstract class Captcha extends Randoms {
protected Font font = new Font("Verdana", Font.PLAIN, 32); // 字体
protected Font font = new Font("Arial", Font.PLAIN, 32); // 字体Verdana
protected int len = 5; // 验证码随机字符长度
protected int width = 130; // 验证码显示宽度
protected int height = 48; // 验证码显示高度
@@ -17,11 +17,10 @@ public abstract class Captcha extends Randoms {
protected int charType = TYPE_DEFAULT; // 验证码类型，1字母数字混合，2纯数字，3纯字母
public static final int TYPE_DEFAULT = 1; // 字母数字混合
public static final int TYPE_ONLY_NUMBER = 2; // 纯数字
public static final int TYPE_ONLY_CHAR = 3; // 纯字母 // 常用颜色
public static final int TYPE_ONLY_CHAR = 3; // 纯字母
// 常用颜色
public static final int[][] COLOR = {{0, 135, 255}, {51, 153, 51}, {255, 102, 102}, {255, 153, 0}, {153, 102, 0}, {153, 102, 153}, {51, 153, 153}, {102, 102, 255}, {0, 102, 204}, {204, 51, 51}, {0, 153, 204}, {0, 51, 102}};
/**
* 生成随机验证码
*

4
src/main/java/com/wf/captcha/ChineseCaptcha.java
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@@ -67,8 +67,8 @@ public class ChineseCaptcha extends ChineseCaptchaAbstract {
// 画字符串
for (int i = 0; i < len; i++) {
// 计算坐标
int x = i * w + sp + num(-Math.abs(sp), Math.abs(sp));
int y = h + num(-Math.abs(hp), Math.abs(hp));
int x = i * w + sp + num(-5, 5);
int y = h + num(-5, 5);
if (x < 0) {
x = 0;
}

21
src/main/java/com/wf/captcha/ChineseGifCaptcha.java
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@@ -68,8 +68,8 @@ public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
Graphics2D g2d = (Graphics2D) image.getGraphics();
g2d.setColor(Color.WHITE); // 填充背景颜色
g2d.fillRect(0, 0, width, height);
AlphaComposite ac3;
// 抗锯齿
AlphaComposite ac3;
g2d.setColor(fontcolor);
g2d.setFont(font);
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
@@ -82,7 +82,7 @@ public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getAlpha(flag, i));
g2d.setComposite(ac3);
// 计算坐标
int x = i * w + sp + num(-Math.abs(sp), Math.abs(sp));
int x = i * w + sp + num(-3, 3);
int y = h + num(-3, 3);
if (x < 0) {
x = 0;
@@ -99,17 +99,19 @@ public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
g2d.drawString(String.valueOf(strs[i]), x, y);
}
// 随机画干扰线
g2d.setStroke(new BasicStroke(1.2f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
g2d.setStroke(new BasicStroke(1.25f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.45f);
g2d.setComposite(ac3);
for (int i = 0; i < 4; i++) {
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.55f);
g2d.setComposite(ac3);
int x1 = num(-10, width - 10);
int y1 = num(5, height - 5);
int x2 = num(10, width + 10);
int y2 = num(2, height - 2);
g2d.drawLine(x1, y1, x2, y2);
// 画干扰圆圈
g2d.drawOval(num(width), num(height), 5 + num(10), 5 + num(10));
}
// 画干扰圆圈
for (int i = 0; i < 8; i++) {
g2d.drawOval(num(width), num(height), 5 + num(50), 5 + num(50));
}
g2d.dispose();
return image;
@@ -124,7 +126,8 @@ public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
*/
private float getAlpha(int i, int j) {
int num = i + j;
float r = (float) 1 / len, s = (len + 1) * r;
return num > len ? (num * r - s) : num * r;
float r = (float) 1 / (len - 1);
float s = len * r;
return num >= len ? (num * r - s) : num * r;
}
}

11
src/main/java/com/wf/captcha/GifCaptcha.java
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@@ -96,14 +96,14 @@ public class GifCaptcha extends Captcha {
int hp = (height - font.getSize()) >> 1;
int h = height - hp;
int w = width / strs.length;
int sp = (w - font.getSize()) / 2;
//int sp = (w - font.getSize()) / 2;
for (int i = 0; i < strs.length; i++) {
AlphaComposite ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getAlpha(flag, i));
g2d.setComposite(ac3);
g2d.setColor(fontcolor[i]);
// 计算坐标
int x = i * w + sp + num(-3, 3);
int y = h + num(-6, 0);
int x = i * w + num(6);
int y = h - num(2, 8);
if (x < 0) {
x = 0;
}
@@ -131,8 +131,9 @@ public class GifCaptcha extends Captcha {
*/
private float getAlpha(int i, int j) {
int num = i + j;
float r = (float) 1 / len, s = (len + 1) * r;
return num > len ? (num * r - s) : num * r;
float r = (float) 1 / (len - 1);
float s = len * r;
return num >= len ? (num * r - s) : num * r;
}
}

7
src/main/java/com/wf/captcha/SpecCaptcha.java
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@@ -81,12 +81,12 @@ public class SpecCaptcha extends Captcha {
int hp = (height - font.getSize()) >> 1;
int h = height - hp;
int w = width / strs.length;
int sp = (w - font.getSize()) / 2;
//int sp = (w - font.getSize()) / 2;
for (int i = 0; i < strs.length; i++) {
g.setColor(new Color(20 + num(110), 20 + num(110), 20 + num(110)));
// 计算坐标
int x = i * w + sp + num(-Math.abs(sp), Math.abs(sp));
int y = h + num(-Math.abs(hp), Math.abs(hp));
int x = i * w + num(10);
int y = h - num(9);
if (x < 0) {
x = 0;
}
@@ -99,7 +99,6 @@ public class SpecCaptcha extends Captcha {
if (y - font.getSize() < 0) {
y = font.getSize();
}
System.out.println(x + "--" + y);
g.drawString(String.valueOf(strs[i]), x, y);
}
ImageIO.write(bi, "png", out);

129
src/main/java/com/wf/captcha/utils/CaptchaUtil.java
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@@ -1,5 +1,6 @@
package com.wf.captcha.utils;
import java.awt.*;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
@@ -7,6 +8,7 @@ import javax.servlet.http.HttpServletResponse;
import com.wf.captcha.Captcha;
import com.wf.captcha.GifCaptcha;
import com.wf.captcha.SpecCaptcha;
/**
* 图形验证码工具类
@@ -55,6 +57,20 @@ public class CaptchaUtil {
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);
}
/**
* 输出验证码
*
@@ -67,8 +83,119 @@ public class CaptchaUtil {
*/
public static void out(int width, int height, int len, HttpServletRequest request, HttpServletResponse response)
throws IOException {
out(width, height, len, null, request, response);
}
/**
* 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)
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);
}
/**
* 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 outPng(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);
}
/**
* 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 outPng(int width, int height, int len, Font font, HttpServletRequest request, HttpServletResponse response)
throws IOException {
outCaptcha(width, height, len, font, 0, 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 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)
throws IOException {
setHeader(response);
Captcha captcha = new GifCaptcha(width, height, len);
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());
}

10
src/test/java/com/wf/captcha/CaptchaTest.java
View File

@@ -17,16 +17,16 @@ public class CaptchaTest {
SpecCaptcha specCaptcha = new SpecCaptcha();
//specCaptcha.setCharType(Captcha.TYPE_ONLY_NUMBER);
System.out.println(specCaptcha.text());
// specCaptcha.out(new FileOutputStream(new File("C:/Java/aa" + i + ".png")));
specCaptcha.out(new FileOutputStream(new File("D:/Java/aa" + i + ".png")));
}
}
@Test
public void testGIf() throws Exception {
for (int i = 0; i < 5; i++) {
GifCaptcha gifCaptcha = new GifCaptcha(130, 48, 5);
GifCaptcha gifCaptcha = new GifCaptcha();
System.out.println(gifCaptcha.text());
// gifCaptcha.out(new FileOutputStream(new File("C:/Java/aa" + i + ".gif")));
gifCaptcha.out(new FileOutputStream(new File("D:/Java/aa" + i + ".gif")));
}
}
@@ -35,7 +35,7 @@ public class CaptchaTest {
ChineseCaptcha chineseCaptcha = new ChineseCaptcha();
//chineseCaptcha.setFont(new Font("微软雅黑", Font.PLAIN, 25));
System.out.println(chineseCaptcha.text());
//chineseCaptcha.out(new FileOutputStream(new File("C:/Java/aa.png")));
chineseCaptcha.out(new FileOutputStream(new File("D:/Java/aa.png")));
}
@Test
@@ -43,7 +43,7 @@ public class CaptchaTest {
ChineseGifCaptcha chineseGifCaptcha = new ChineseGifCaptcha();
//chineseGifCaptcha.setFont(new Font("微软雅黑", Font.PLAIN, 30));
System.out.println(chineseGifCaptcha.text());
//chineseGifCaptcha.out(new FileOutputStream(new File("C:/Java/aa.gif")));
chineseGifCaptcha.out(new FileOutputStream(new File("D:/Java/aa.gif")));
}
}