增加中文验证码功能

This commit is contained in:
synchronized 2018-07-28 00:22:49 +08:00
parent fda509dfe3
commit eeb7045f4d
9 changed files with 406 additions and 10 deletions

110
README.md
View File

@ -28,6 +28,21 @@
![验证码](https://ws1.sinaimg.cn/large/006a7GCKgy1ftogfxh2rwj303m01cjr5.jpg)
**中文验证码:**
![验证码](https://ws1.sinaimg.cn/large/006a7GCKly1ftovnvbgx6g303m01cjrc.jpg)
  
![验证码](https://ws1.sinaimg.cn/large/006a7GCKly1ftovojp2gng303m01cq2w.jpg)
  
![验证码](https://ws1.sinaimg.cn/large/006a7GCKly1ftovp5u4c4g303m01cdft.jpg)
![验证码](https://ws1.sinaimg.cn/large/006a7GCKly1ftovmfxg71j303m01cq2s.jpg)
  
![验证码](https://ws1.sinaimg.cn/large/006a7GCKly1ftovmy720dj303m01cq2s.jpg)
  
![验证码](https://ws1.sinaimg.cn/large/006a7GCKly1ftovn68um6j303m01cglf.jpg)
## 3.导入项目
@ -126,6 +141,7 @@ public class LoginController {
public JsonResult login(String username,String password,String code){
if (CaptchaUtil.ver(code, request)) {
CaptchaUtil.clear(request);
return JsonResult.error("验证码不正确");
}
}
@ -148,6 +164,48 @@ public class MainController {
}
```
### 3.5.不使用工具类
  CaptchaUtil是为了简化操作封装了生成验证码、存session、判断验证码等功能。CaptchaUtil使用的GifCaptcha
生成的字母数字混合的gif验证码如果需要设置更多的参数请参照如下操作使用
```java
@Controller
public class MainController {
@RequestMapping("/images/captcha")
public void captcha(HttpServletRequest request, HttpServletResponse response) throws Exception {
// 设置请求头为输出图片类型
CaptchaUtil.setHeader(response);
// 三个参数分别为宽、高、位数
GifCaptcha gifCaptcha = new GifCaptcha(130, 48, 5);
// 设置字体
gifCaptcha.setFont(new Font("Verdana", Font.PLAIN, 32)); // 有默认字体,可以不用设置
// 设置类型,纯数字、纯字母、字母数字混合
gifCaptcha.setCharType(Captcha.TYPE_ONLY_NUMBER);
// 验证码存入session
request.getSession().setAttribute("captcha", gifCaptcha.text().toLowerCase());
// 输出图片流
gifCaptcha.out(response.getOutputStream());
}
@PostMapping("/login")
public JsonResult login(String username,String password,String code){
// 获取session中的验证码
String sessionCode = request.getSession().getAttribute("captcha");
// 判断验证码
if (code==null || !sessionCode.equals(code.trim().toLowerCase())) {
return JsonResult.error("验证码不正确");
}
}
}
```
## 4.更多设置
### 4.1.使用Gif验证码
@ -211,3 +269,55 @@ public class Test {
TYPE_ONLY_CHAR | 纯字母
### 4.4.中文验证码
中文png验证码
```java
public class Test {
public static void main(String[] args) {
OutputStream outputStream = new FileOutputStream(new File("D:/a/aa.png"));
// 三个参数分别为宽、高、位数
ChineseCaptcha chineseCaptcha = new ChineseCaptcha(130, 48, 4);
// 设置字体
chineseCaptcha.setFont(new Font("楷体", Font.PLAIN, 28)); // 有默认字体,可以不用设置
// 生成的验证码
String code = chineseCaptcha.text();
// 输出图片流
chineseCaptcha.out(outputStream);
}
}
```
中文gif验证码
```java
public class Test {
public static void main(String[] args) {
OutputStream outputStream = new FileOutputStream(new File("D:/a/aa.png"));
// 三个参数分别为宽、高、位数
ChineseGifCaptcha chineseGifCaptcha = new ChineseGifCaptcha(130, 48, 4);
// 设置字体
chineseGifCaptcha.setFont(new Font("楷体", Font.PLAIN, 28)); // 有默认字体,可以不用设置
// 生成的验证码
String code = chineseGifCaptcha.text();
// 输出图片流
chineseGifCaptcha.out(outputStream);
}
}
```
### 4.5.前后端分离项目的使用
  分离项目建议不要存储在session中存储在redis中。

View File

@ -5,7 +5,7 @@
<groupId>com.github.whvcse</groupId>
<artifactId>EasyCaptcha</artifactId>
<version>1.2.0-RELEASE</version>
<version>1.2.5-RELEASE</version>
<packaging>jar</packaging>
<name>EasyCaptcha</name>

View File

@ -13,7 +13,7 @@ public abstract class Captcha extends Randoms {
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
private String chars = null; // 当前验证码
protected String chars = null; // 当前验证码
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
@ -25,8 +25,6 @@ public abstract class Captcha extends Randoms {
* @return 验证码字符数组
*/
protected char[] alphas() {
"".toLowerCase();
"".toUpperCase();
char[] cs = new char[len];
for (int i = 0; i < len; i++) {
switch (charType) {

View File

@ -0,0 +1,99 @@
package com.wf.captcha;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
public class ChineseCaptcha extends ChineseCaptchaAbstract {
public ChineseCaptcha() {
super();
}
public ChineseCaptcha(int width, int height) {
this();
setWidth(width);
setHeight(height);
}
public ChineseCaptcha(int width, int height, int len) {
this(width, height);
setLen(len);
}
public ChineseCaptcha(int width, int height, int len, Font font) {
this(width, height, len);
setFont(font);
}
/**
* 生成验证码
*
* @param out 输出流
* @return 是否成功
*/
@Override
public boolean out(OutputStream out) {
checkAlpha();
return graphicsImage(textChar(), out);
}
/**
* 生成验证码图形
*
* @param strs 验证码
* @param out 输出流
* @return boolean
*/
private boolean graphicsImage(char[] strs, OutputStream out) {
boolean ok;
try {
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = (Graphics2D) bi.getGraphics();
AlphaComposite ac3;
int len = strs.length;
g.setColor(Color.WHITE);
g.fillRect(0, 0, width, height);
g.setColor(color());
g.setFont(font);
int h = height - ((height - font.getSize()) >> 1);
int w = width / len;
// 抗锯齿
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// 画字符串
for (int i = 0; i < len; i++) {
int x = i * w + num(2, 6);
int y = h - num(2, 6);
g.drawString(String.valueOf(strs[i]), x, y);
}
// 随机画干扰线
g.setStroke(new BasicStroke(1.25f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
for (int i = 0; i < 8; i++) {
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.75f); // 指定透明度
g.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);
g.drawLine(x1, y1, x2, y2);
// 画干扰圆圈
g.drawOval(num(width), num(height), 5 + num(25), 5 + num(25));
}
ImageIO.write(bi, "png", out);
out.flush();
ok = true;
} catch (IOException e) {
ok = false;
e.printStackTrace();
} finally {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return ok;
}
}

View File

@ -0,0 +1,50 @@
package com.wf.captcha;
import java.awt.*;
public abstract class ChineseCaptchaAbstract extends Captcha {
// 常用汉字
public static final String DELTA = "\u7684\u4e00\u4e86\u662f\u6211\u4e0d\u5728\u4eba\u4eec\u6709\u6765\u4ed6\u8fd9\u4e0a\u7740\u4e2a\u5730\u5230\u5927\u91cc\u8bf4\u5c31\u53bb\u5b50\u5f97\u4e5f\u548c\u90a3\u8981\u4e0b\u770b\u5929\u65f6\u8fc7\u51fa\u5c0f\u4e48\u8d77\u4f60\u90fd\u628a\u597d\u8fd8\u591a\u6ca1\u4e3a\u53c8\u53ef\u5bb6\u5b66\u53ea\u4ee5\u4e3b\u4f1a\u6837\u5e74\u60f3\u751f\u540c\u8001\u4e2d\u5341\u4ece\u81ea\u9762\u524d\u5934\u9053\u5b83\u540e\u7136\u8d70\u5f88\u50cf\u89c1\u4e24\u7528\u5979\u56fd\u52a8\u8fdb\u6210\u56de\u4ec0\u8fb9\u4f5c\u5bf9\u5f00\u800c\u5df1\u4e9b\u73b0\u5c71\u6c11\u5019\u7ecf\u53d1\u5de5\u5411\u4e8b\u547d\u7ed9\u957f\u6c34\u51e0\u4e49\u4e09\u58f0\u4e8e\u9ad8\u624b\u77e5\u7406\u773c\u5fd7\u70b9\u5fc3\u6218\u4e8c\u95ee\u4f46\u8eab\u65b9\u5b9e\u5403\u505a\u53eb\u5f53\u4f4f\u542c\u9769\u6253\u5462\u771f\u5168\u624d\u56db\u5df2\u6240\u654c\u4e4b\u6700\u5149\u4ea7\u60c5\u8def\u5206\u603b\u6761\u767d\u8bdd\u4e1c\u5e2d\u6b21\u4eb2\u5982\u88ab\u82b1\u53e3\u653e\u513f\u5e38\u6c14\u4e94\u7b2c\u4f7f\u5199\u519b\u5427\u6587\u8fd0\u518d\u679c\u600e\u5b9a\u8bb8\u5feb\u660e\u884c\u56e0\u522b\u98de\u5916\u6811\u7269\u6d3b\u90e8\u95e8\u65e0\u5f80\u8239\u671b\u65b0\u5e26\u961f\u5148\u529b\u5b8c\u5374\u7ad9\u4ee3\u5458\u673a\u66f4\u4e5d\u60a8\u6bcf\u98ce\u7ea7\u8ddf\u7b11\u554a\u5b69\u4e07\u5c11\u76f4\u610f\u591c\u6bd4\u9636\u8fde\u8f66\u91cd\u4fbf\u6597\u9a6c\u54ea\u5316\u592a\u6307\u53d8\u793e\u4f3c\u58eb\u8005\u5e72\u77f3\u6ee1\u65e5\u51b3\u767e\u539f\u62ff\u7fa4\u7a76\u5404\u516d\u672c\u601d\u89e3\u7acb\u6cb3\u6751\u516b\u96be\u65e9\u8bba\u5417\u6839\u5171\u8ba9\u76f8\u7814\u4eca\u5176\u4e66\u5750\u63a5\u5e94\u5173\u4fe1\u89c9\u6b65\u53cd\u5904\u8bb0\u5c06\u5343\u627e\u4e89\u9886\u6216\u5e08\u7ed3\u5757\u8dd1\u8c01\u8349\u8d8a\u5b57\u52a0\u811a\u7d27\u7231\u7b49\u4e60\u9635\u6015\u6708\u9752\u534a\u706b\u6cd5\u9898\u5efa\u8d76\u4f4d\u5531\u6d77\u4e03\u5973\u4efb\u4ef6\u611f\u51c6\u5f20\u56e2\u5c4b\u79bb\u8272\u8138\u7247\u79d1\u5012\u775b\u5229\u4e16\u521a\u4e14\u7531\u9001\u5207\u661f\u5bfc\u665a\u8868\u591f\u6574\u8ba4\u54cd\u96ea\u6d41\u672a\u573a\u8be5\u5e76\u5e95\u6df1\u523b\u5e73\u4f1f\u5fd9\u63d0\u786e\u8fd1\u4eae\u8f7b\u8bb2\u519c\u53e4\u9ed1\u544a\u754c\u62c9\u540d\u5440\u571f\u6e05\u9633\u7167\u529e\u53f2\u6539\u5386\u8f6c\u753b\u9020\u5634\u6b64\u6cbb\u5317\u5fc5\u670d\u96e8\u7a7f\u5185\u8bc6\u9a8c\u4f20\u4e1a\u83dc\u722c\u7761\u5174\u5f62\u91cf\u54b1\u89c2\u82e6\u4f53\u4f17\u901a\u51b2\u5408\u7834\u53cb\u5ea6\u672f\u996d\u516c\u65c1\u623f\u6781\u5357\u67aa\u8bfb\u6c99\u5c81\u7ebf\u91ce\u575a\u7a7a\u6536\u7b97\u81f3\u653f\u57ce\u52b3\u843d\u94b1\u7279\u56f4\u5f1f\u80dc\u6559\u70ed\u5c55\u5305\u6b4c\u7c7b\u6e10\u5f3a\u6570\u4e61\u547c\u6027\u97f3\u7b54\u54e5\u9645\u65e7\u795e\u5ea7\u7ae0\u5e2e\u5566\u53d7\u7cfb\u4ee4\u8df3\u975e\u4f55\u725b\u53d6\u5165\u5cb8\u6562\u6389\u5ffd\u79cd\u88c5\u9876\u6025\u6797\u505c\u606f\u53e5\u533a\u8863\u822c\u62a5\u53f6\u538b\u6162\u53d4\u80cc\u7ec6";
// 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}};
public ChineseCaptchaAbstract() {
setFont(new Font("楷体", Font.PLAIN, 28));
setLen(4);
}
/**
* 生成随机验证码
*
* @return 验证码字符数组
*/
@Override
protected char[] alphas() {
char[] cs = new char[len];
for (int i = 0; i < len; i++) {
cs[i] = alphaHan();
}
chars = new String(cs);
return cs;
}
/**
* 获取随机颜色
*
* @return 随机颜色
*/
protected Color color() {
int[] color = COLOR[num(COLOR.length)];
return new Color(color[0], color[1], color[2]);
}
/**
* 返回随机汉字
*
* @return 随机汉字
*/
public static char alphaHan() {
return DELTA.charAt(num(DELTA.length()));
}
}

View File

@ -0,0 +1,114 @@
package com.wf.captcha;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
public class ChineseGifCaptcha extends ChineseCaptchaAbstract {
public ChineseGifCaptcha() {
}
public ChineseGifCaptcha(int width, int height) {
setWidth(width);
setHeight(height);
}
public ChineseGifCaptcha(int width, int height, int len) {
this(width, height);
setLen(len);
}
public ChineseGifCaptcha(int width, int height, int len, Font font) {
this(width, height, len);
setFont(font);
}
@Override
public boolean out(OutputStream os) {
checkAlpha();
boolean ok = false;
try {
char[] rands = textChar(); // 获取验证码数组
GifEncoder gifEncoder = new GifEncoder();
gifEncoder.start(os);
gifEncoder.setQuality(180);
gifEncoder.setDelay(100);
gifEncoder.setRepeat(0);
BufferedImage frame;
Color fontcolor = color();
for (int i = 0; i < len; i++) {
frame = graphicsImage(fontcolor, rands, i);
gifEncoder.addFrame(frame);
frame.flush();
}
gifEncoder.finish();
ok = true;
} finally {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return ok;
}
/**
* 画随机码图
*
* @param fontcolor 随机字体颜色
* @param strs 字符数组
* @param flag 透明度使用
* @return BufferedImage
*/
private BufferedImage graphicsImage(Color fontcolor, char[] strs, int flag) {
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = (Graphics2D) image.getGraphics();
g2d.setColor(Color.WHITE); // 填充背景颜色
g2d.fillRect(0, 0, width, height);
AlphaComposite ac3;
int h = height - ((height - font.getSize()) >> 1);
int w = width / len;
g2d.setFont(font);
g2d.setColor(fontcolor);
// 抗锯齿
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// 画验证码
for (int i = 0; i < len; i++) {
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getAlpha(flag, i));
g2d.setComposite(ac3);
int x = i * w + num(2, 6);
g2d.drawString(String.valueOf(strs[i]), x, h - num(2, 6));
}
// 随机画干扰线
g2d.setStroke(new BasicStroke(1.2f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
for (int i = 0; i < 5; i++) {
ac3 = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.65f);
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));
}
g2d.dispose();
return image;
}
/**
* 获取透明度,从0到1,自动计算步长
*
* @param i
* @param j
* @return 透明度
*/
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;
}
}

View File

@ -7,7 +7,7 @@ import java.util.Random;
* Created by 王帆 on 2018-07-27 上午 10:08.
*/
public class Randoms {
private static final Random RANDOM = new Random();
protected static final Random RANDOM = new Random();
// 定义验证码字符.去除了O和I等容易混淆的字母
public static final char ALPHA[] = {'2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'G', 'K', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',

View File

@ -73,12 +73,21 @@ public class CaptchaUtil {
captcha.out(response.getOutputStream());
}
/**
* 清除session中的验证码
*
* @param request HttpServletRequest
*/
public static void clear(HttpServletRequest request) {
request.getSession().removeAttribute(SESSION_KEY);
}
/**
* 设置相应头
*
* @param response HttpServletResponse
*/
private static void setHeader(HttpServletResponse response) {
public static void setHeader(HttpServletResponse response) {
response.setContentType("image/gif");
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");

View File

@ -14,11 +14,11 @@ public class CaptchaTest {
@Test
public void test() throws Exception {
for (int i = 0; i < 100; i++) {
for (int i = 0; i < 5; i++) {
SpecCaptcha specCaptcha = new SpecCaptcha();
specCaptcha.setCharType(Captcha.TYPE_ONLY_NUMBER);
//specCaptcha.setCharType(Captcha.TYPE_ONLY_NUMBER);
System.out.println(specCaptcha.text());
specCaptcha.out(new FileOutputStream(new File("D:/a/aa" + i + ".png")));
//specCaptcha.out(new FileOutputStream(new File("C:/aa" + i + ".png")));
}
}
@ -26,6 +26,22 @@ public class CaptchaTest {
public void testGIf() throws Exception {
GifCaptcha gifCaptcha = new GifCaptcha(130, 48, 5);
System.out.println(gifCaptcha.text());
//gifCaptcha.out(new FileOutputStream(new File("D:/a/aa.gif")));
//gifCaptcha.out(new FileOutputStream(new File("C:/aa.gif")));
}
@Test
public void testHan() throws Exception {
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")));
}
@Test
public void testGifHan() throws Exception {
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")));
}
}