标签：remote ase Servle 过期 dex 获取 ati obs trace
1、在pom文件中先导入生成图像的依赖包
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>kaptcha-spring-boot-starter</artifactId>
<version>1.0.0</version>
</dependency>
2、在config写配置类
@Configuration
public class CaptchaConfig {
/**
* 验证码配置
* Kaptcha配置类名
*
* @return
*/
@Bean
@Qualifier("captchaProducer")
public DefaultKaptcha kaptcha() {
DefaultKaptcha kaptcha = new DefaultKaptcha();
Properties properties = new Properties();
//验证码个数
properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "4");
//字体间隔
properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_CHAR_SPACE,"8");
//干扰线颜色
//干扰实现类
properties.setProperty(Constants.KAPTCHA_NOISE_IMPL, "com.google.code.kaptcha.impl.NoNoise");
//图片样式
properties.setProperty(Constants.KAPTCHA_OBSCURIFICATOR_IMPL, "com.google.code.kaptcha.impl.WaterRipple");
//文字来源
properties.setProperty(Constants.KAPTCHA_TEXTPRODUCER_CHAR_STRING, "0123456789");
Config config = new Config(properties);
kaptcha.setConfig(config);
return kaptcha;
}
}
3、配置好redis相关的配置
4、存入redis
**
* 获取ip
* @param request
* @return
*/
public static String getIpAddr(HttpServletRequest request) {
String ipAddress = null;
try {
ipAddress = request.getHeader("x-forwarded-for");
if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = request.getHeader("Proxy-Client-IP");
}
if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = request.getHeader("WL-Proxy-Client-IP");
}
if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = request.getRemoteAddr();
if (ipAddress.equals("127.0.0.1")) {
// 根据网卡取本机配置的IP
InetAddress inet = null;
try {
inet = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
e.printStackTrace();
}
ipAddress = inet.getHostAddress();
}
}
// 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照‘,‘分割
if (ipAddress != null && ipAddress.length() > 15) {
// "***.***.***.***".length()
// = 15
if (ipAddress.indexOf(",") > 0) {
ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
}
}
} catch (Exception e) {
ipAddress="";
}
return ipAddress;
}
5、controller类编写
@RestController
@RequestMapping("/api/v1/captchar")
public class CaptCharController {
@Autowired
private RedisTemplate redisTemplate;
@Autowired
private Producer captchaProducer; //captchaProducer和配置文件的@Qualifier("captchaProducer")名字相同才可以
@GetMapping("get_captcha") public void getCaptChar(HttpServletRequest request, HttpServletResponse response){ String producerText = captchaProducer.createText(); String key = getKey(request); //设置过期时间为10分钟 redisTemplate.opsForValue().set(key,producerText,10, TimeUnit.MINUTES); BufferedImage image = captchaProducer.createImage(producerText); ServletOutputStream outputStream = null; try { outputStream = response.getOutputStream(); ImageIO.write(image,"jpg",outputStream); outputStream.flush(); outputStream.close(); }catch (Exception e){ e.fillInStackTrace(); } }
//获取key的值
private String getKey(HttpServletRequest request){
String ipAddr = CommonUtil.getIpAddr(request);
String header = request.getHeader("User-Agent");
String key = "user-service:captcha:"+CommonUtil.MD5(ipAddr+header);
return key;
}
}
标签：remote ase Servle 过期 dex 获取 ati obs trace
原文地址：https://www.cnblogs.com/laolehyf/p/14759010.html
