mirror of
https://github.com/whvcse/EasyCaptcha.git
synced 2024-11-23 01:59:19 +08:00
优化验证码的效果和干扰
This commit is contained in:
synchronized
parent
32d8b6d956
commit
4d3d5b4e71
199
README.md
199
README.md
@ -1,14 +1,35 @@
|
||||
# EasyCaptcha
|
||||
JavaWeb图形验证码，支持gif验证码，可用于基于的session的web项目和前后端分离的项目。
|
||||
|
||||
## 效果展示
|
||||
|
||||
刷新页面可以重新生成验证码图片。
|
||||
|
||||
## 导入项目
|
||||
### gradle方式的引入
|
||||
## 1.简介
|
||||
|
||||
  Java图形验证码，支持gif验证码，可用于Java Web、JavaSE和Android项目。
|
||||
|
||||
|
||||
## 2.效果展示
|
||||
|
||||
**gif效果：**
|
||||
|
||||
|
||||
  
|
||||
|
||||
  
|
||||
|
||||
|
||||
**png效果：**
|
||||
|
||||
|
||||
  
|
||||
|
||||
  
|
||||
|
||||
|
||||
|
||||
|
||||
## 3.导入项目
|
||||
|
||||
### 2.1.gradle方式的引入
|
||||
需要先在project的build.gradle中添加：
|
||||
```
|
||||
```text
|
||||
allprojects {
|
||||
repositories {
|
||||
maven { url 'https://jitpack.io' }
|
||||
@ -16,62 +37,73 @@ allprojects {
|
||||
}
|
||||
```
|
||||
在项目的build.gradle中添加
|
||||
```
|
||||
```text
|
||||
dependencies {
|
||||
compile 'com.github.whvcse:EasyCaptcha:1.1.0'
|
||||
compile 'com.github.whvcse:EasyCaptcha:1.2.0'
|
||||
}
|
||||
```
|
||||
|
||||
### maven方式引入
|
||||
### 2.2.maven方式引入
|
||||
在你的pom.xml中添加如下代码：
|
||||
```xml
|
||||
<repositories>
|
||||
<repository>
|
||||
<id>jitpack.io</id>
|
||||
<url>https://jitpack.io</url>
|
||||
</repository>
|
||||
</repositories>
|
||||
<project>
|
||||
<repositories>
|
||||
<repository>
|
||||
<id>jitpack.io</id>
|
||||
<url>https://jitpack.io</url>
|
||||
</repository>
|
||||
</repositories>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>com.github.whvcse</groupId>
|
||||
<artifactId>EasyCaptcha</artifactId>
|
||||
<version>1.1.0</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
</project>
|
||||
|
||||
<dependencies>
|
||||
<dependency>
|
||||
<groupId>com.github.whvcse</groupId>
|
||||
<artifactId>EasyCaptcha</artifactId>
|
||||
<version>1.1.0</version>
|
||||
</dependency>
|
||||
</dependencies>
|
||||
```
|
||||
|
||||
### jar包下载
|
||||
[EasyCaptcha-1.1.0.jar](https://github.com/whvcse/EasyCaptcha/releases)
|
||||
### 2.3.jar包下载
|
||||
[EasyCaptcha-1.2.0.jar](https://github.com/whvcse/EasyCaptcha/releases)
|
||||
|
||||
## 使用方法
|
||||
### 快速使用
|
||||
|
||||
---
|
||||
|
||||
|
||||
## 3.使用方法
|
||||
|
||||
### 3.1.快速使用
|
||||
1.在web.xml里面加入如下配置：
|
||||
```xml
|
||||
<!-- 图形验证码 -->
|
||||
<servlet>
|
||||
<servlet-name>CaptchaServlet</servlet-name>
|
||||
<servlet-class>com.wf.captcha.servlet.CaptchaServlet</servlet-class>
|
||||
</servlet>
|
||||
<servlet-mapping>
|
||||
<servlet-name>CaptchaServlet</servlet-name>
|
||||
<url-pattern>/images/captcha</url-pattern>
|
||||
</servlet-mapping>
|
||||
<web-app>
|
||||
<!-- 图形验证码servlet -->
|
||||
<servlet>
|
||||
<servlet-name>CaptchaServlet</servlet-name>
|
||||
<servlet-class>com.wf.captcha.servlet.CaptchaServlet</servlet-class>
|
||||
</servlet>
|
||||
<servlet-mapping>
|
||||
<servlet-name>CaptchaServlet</servlet-name>
|
||||
<url-pattern>/images/captcha</url-pattern>
|
||||
</servlet-mapping>
|
||||
</web-app>
|
||||
|
||||
```
|
||||
2.前端代码
|
||||
```html
|
||||
<img src="/images/captcha" />
|
||||
```
|
||||
|
||||
### 在*SpringMVC*中使用
|
||||
如果你不想使用项目提供的servlet，可以使用controller的形式实现，方法也很简单，代码如下：
|
||||
### 3.2.在SpringMVC中使用
|
||||
也可以使用controller的形式输出验证码，方法如下：
|
||||
```java
|
||||
@RequestMapping("/images/captcha")
|
||||
public void captcha(HttpServletRequest request, HttpServletResponse response) {
|
||||
CaptchaUtil captcha = new CaptchaUtil();
|
||||
try {
|
||||
captcha.out(request, response);
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
@Controller
|
||||
public class MainController {
|
||||
|
||||
@RequestMapping("/images/captcha")
|
||||
public void captcha(HttpServletRequest request, HttpServletResponse response) throws Exception {
|
||||
CaptchaUtil.out(request, response);
|
||||
}
|
||||
}
|
||||
```
|
||||
@ -80,55 +112,38 @@ public void captcha(HttpServletRequest request, HttpServletResponse response) {
|
||||
<img src="/images/captcha" />
|
||||
```
|
||||
|
||||
### 前后端分离中使用
|
||||
验证码一般都是保存在session中的，但是在前后端分离的项目中，不推荐使用session存储，可使用如下方式：
|
||||
### 3.3.判断验证码是否正确
|
||||
|
||||
```java
|
||||
@RequestMapping("/images/captcha")
|
||||
public void captcha(String key, HttpServletRequest request, HttpServletResponse response) {
|
||||
CaptchaUtil captcha = new CaptchaUtil();
|
||||
try {
|
||||
captcha.out(key, request, response);
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
@Controller
|
||||
public class LoginController {
|
||||
|
||||
@PostMapping("/login")
|
||||
public JsonResult login(String username,String password,String code){
|
||||
|
||||
if (CaptchaUtil.ver(code, request)) {
|
||||
return JsonResult.error("验证码不正确");
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### 3.4.设置宽高和位数
|
||||
```java
|
||||
@Controller
|
||||
public class MainController {
|
||||
|
||||
@RequestMapping("/images/captcha")
|
||||
public void captcha(HttpServletRequest request, HttpServletResponse response) throws Exception {
|
||||
// 设置位数
|
||||
CaptchaUtil.out(5, request, response);
|
||||
|
||||
// 设置宽、高、位数
|
||||
CaptchaUtil.out(130, 48, 5, request, response);
|
||||
}
|
||||
}
|
||||
```
|
||||
与前面的使用区别就在于多了一个key，使用的时候需要前端生成一个随机key传递过来，服务器是已这个key为名字存储在servletContext中的，取的时候需要根据这个key取值。
|
||||
|
||||
前后端分离也同样可以使用框架自带的servlet，使用方式如下：
|
||||
```html
|
||||
<img src="/images/captcha?key=xxx" />
|
||||
<!-- 此处的key应该有js随机生成，并且js在验证的时候也需要传递这个key -->
|
||||
## 4.更多设置
|
||||
|
||||
```
|
||||
|
||||
### 判断验证码是否正确
|
||||
基于session存储的判断：
|
||||
```java
|
||||
CaptchaUtil captcha = new CaptchaUtil();
|
||||
if (captcha == null || !captcha.ver(code, request)) {
|
||||
return JsonResult.error("验证码不正确");
|
||||
}
|
||||
```
|
||||
前后端分离方式的判断：
|
||||
```java
|
||||
CaptchaUtil captcha = new CaptchaUtil();
|
||||
if (captcha == null || !captcha.ver(key, code, request)) {
|
||||
return JsonResult.error("验证码不正确");
|
||||
}
|
||||
//此处的key便是生成的时候传递的key
|
||||
```
|
||||
|
||||
|
||||
### 参数设置
|
||||
#### 设置宽高和位数
|
||||
```java
|
||||
//三个参数分别是宽、高、位数
|
||||
CaptchaUtil captcha = new CaptchaUtil(130, 38, 5);
|
||||
```
|
||||
#### 修改存储时候的key
|
||||
```java
|
||||
CaptchaUtil captcha = new CaptchaUtil();
|
||||
captcha.setCodeName("captcha");
|
||||
```
|
||||
默认存在session中是以captcha为key存储的，存储在servletContext中是以captcha-xxx为key存储的，xxx是生成的时候前端传递的key。
|
||||
###
|
||||
|
||||
2
pom.xml
2
pom.xml
@ -9,7 +9,7 @@
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<name>EasyCaptcha</name>
|
||||
<description>Java web图形验证码，支持gif验证码。</description>
|
||||
<description>Java图形验证码，支持gif验证码。</description>
|
||||
<url>https://github.com/whvcse/EasyCaptcha</url>
|
||||
|
||||
<licenses>
|
||||
|
||||
@ -15,13 +15,13 @@ public class CaptchaTest {
|
||||
public void test() throws Exception {
|
||||
SpecCaptcha specCaptcha = new SpecCaptcha();
|
||||
System.out.println(specCaptcha.text());
|
||||
specCaptcha.out(new FileOutputStream(new File("D:/a/aa.png")));
|
||||
//specCaptcha.out(new FileOutputStream(new File("D:/a/aa.png")));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGIf() throws Exception {
|
||||
GifCaptcha specCaptcha = new GifCaptcha(130, 48, 5);
|
||||
System.out.println(specCaptcha.text());
|
||||
specCaptcha.out(new FileOutputStream(new File("D:/a/aa.gif")));
|
||||
//specCaptcha.out(new FileOutputStream(new File("D:/a/aa.gif")));
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user