1.通用返回类
import lombok.Data;@Data
public class CommonResult<T> {private Integer code;private String message;private T data;//成功通用返回public static CommonResult okResult(Object data){CommonResult commonResult = new CommonResult(AppHttpCodeEnum.SUCCESS.getCode(),AppHttpCodeEnum.SUCCESS.getMsg());if(data!=null){commonResult.setData(data);}return commonResult;}//失败通用返回 需要传失败码public static CommonResult failed(AppHttpCodeEnum appHttpCodeEnum){CommonResult commonResult = new CommonResult(appHttpCodeEnum.getCode(),appHttpCodeEnum.getMsg());return commonResult;}public static CommonResult failed(Integer code, String message){CommonResult commonResult = new CommonResult(code,message);return commonResult;}public CommonResult(Integer code, String message, T data) {this.code = code;this.message = message;this.data = data;}public CommonResult(Integer code, String message) {this.code = code;this.message = message;}@Overridepublic String toString() {return "CommonResult{" +"code=" + code +", message='" + message + '\'' +", data=" + data +'}';}
}
返回类常量
package com.t2t.t2t_utils.utils_path.returnClass;public enum AppHttpCodeEnum {ERROR(100000,"未知原因"),SUCCESS(200,"操作成功"),;int code;String msg;public int getCode() {return code;}public String getMsg() {return msg;}AppHttpCodeEnum(int code, String msg) {this.code = code;this.msg = msg;}
}
2.随机生成一个 png 或者其他的文件名
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;/*** 随机生成一个 png 或者其他的文件名*/
public class PathUtils {public static String generateFilePath(String fileName){//生成日期文件夹SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");String datePath = sdf.format(new Date());//生成uuidString uuid = UUID.randomUUID().toString().replace("-", "");//获取文件后缀int index = fileName.lastIndexOf(".");String fileType = fileName.substring(index);return new StringBuilder().append(datePath).append(uuid).append(fileType).toString();}
}
3.jwt，springsecurity登录验证----> 每次请求验证请求头token
JwtUtil工具类
import com.alibaba.fastjson.JSON;
import io.jsonwebtoken.*;
import org.springframework.stereotype.Component;import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;
import java.util.Date;
import java.util.UUID;@Component
public class JwtUtil {// 有效期private static final long JWT_EXPIRE = 24 * 60 * 60 * 1000L; //1天// 令牌秘钥private static final String JWT_KEY = "FrDjoJR+wCJPW8wsjxHJ%iYKCdy20Z8mn";//token过期多久可以继续刷新private static final long Refresh_Token_Time = 24 * 24 * 60 * 60; //1天 已转化public static String createToken(Object data) {// 当前时间long currentTime = System.currentTimeMillis();// 过期时间long expTime = currentTime + JWT_EXPIRE;// 构建jwtJwtBuilder builder = Jwts.builder().setId(UUID.randomUUID() + "").setSubject(JSON.toJSONString(data)).setIssuer("system").setIssuedAt(new Date(currentTime)).signWith(SignatureAlgorithm.HS256, encodeSecret(JWT_KEY)).setExpiration(new Date(expTime));return builder.compact();}private static SecretKey encodeSecret(String key) {byte[] encode = Base64.getEncoder().encode(key.getBytes());SecretKeySpec aes = new SecretKeySpec(encode, 0, encode.length, "AES");return aes;}//解析public static Claims parseToken(String token) {Claims body = Jwts.parser().setSigningKey(encodeSecret(JWT_KEY)).parseClaimsJws(token).getBody();return body;}//解析重载public static <T> T parseToken(String token, Class<T> clazz) {Claims body = Jwts.parser().setSigningKey(encodeSecret(JWT_KEY)).parseClaimsJws(token).getBody();return JSON.parseObject(body.getSubject(), clazz);}public static <T> String refreshToken(String inToken, Class<T> clazz) {try {JwtUtil.parseToken(inToken);} catch (ExpiredJwtException e) {Claims claims = e.getClaims();T object = JSON.parseObject(claims.getSubject(), clazz);//判断时间是否超过某个值//过期时间Integer createTime = (Integer) claims.get("exp");//当前时间long time = new Date().getTime();Integer currentTime = (int) (time / 1000);//判断是否过期时间小于某一个值if (currentTime - createTime <= Refresh_Token_Time) {//过期时间小于一天 刷新tokenString token = JwtUtil.createToken(object);return token;}} catch (Exception e) {return null;}//token未过期 放回原来的tokenreturn inToken;}
}拦截器
import com.alibaba.fastjson.JSON;
import com.t2t.t2t_utils.utils_path.returnClass.AppHttpCodeEnum;
import com.t2t.t2t_utils.utils_path.returnClass.CommonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@Component
@Slf4j
public class JwtValidateInterceptor implements HandlerInterceptor {@Autowiredprivate JwtUtil jwtUtil;@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {String token = request.getHeader("X-Token");System.out.println(request.getRequestURI() +" 待验证："+token);if(token != null){try {JwtUtil.parseToken(token);log.debug(request.getRequestURI() + " 放行...");return true;} catch (Exception e) {e.printStackTrace();}}log.debug(request.getRequestURI() + " 禁止访问...");response.setContentType("application/json;charset=utf-8");response.getWriter().write(JSON.toJSONString(CommonResult.failed(AppHttpCodeEnum.JWT_ERROR)));return false;}
}
MyWebConfig
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;@Configurationpublic class MyWebConfig implements WebMvcConfigurer {@Autowiredprivate JwtValidateInterceptor jwtValidateInterceptor;
// 注册拦截器@Overridepublic void addInterceptors(InterceptorRegistry registry) {InterceptorRegistration registration = registry.addInterceptor(jwtValidateInterceptor);registration.addPathPatterns("/**").excludePathPatterns("/user/login","/user/info","/user/logout","/error","/swagger-ui/**","/swagger-resources/**","/v3/**");}
}
4.bean复制类
import org.springframework.beans.BeanUtils;import java.util.List;
import java.util.stream.Collectors;public class BeanCopyUtils {public BeanCopyUtils(){}public static <V> V copyBean(Object source,Class<V> clazz) {//目标V result=null;try {result = clazz.newInstance();BeanUtils.copyProperties(source, result);} catch (InstantiationException e) {throw new RuntimeException(e);} catch (IllegalAccessException e) {throw new RuntimeException(e);}return result;}public static <O,V> List<V> copyBeanList(List<O> list,Class<V> clazz){return list.stream().map(o -> copyBean(o,clazz)).collect(Collectors.toList());}
}
5.获取请求的ip地址
import lombok.extern.slf4j.Slf4j;import javax.servlet.http.HttpServletRequest;
import java.net.*;
import java.util.Enumeration;/***@Author: make mpy*@Description: 获取IP的方法*@Date: 2021/1/18 15:02*/
@Slf4j
public class IpUtil {private static final String LOCAL_IP = "127.0.0.1";/*** 获取IP地址** 使用Nginx等反向代理软件， 则不能通过request.getRemoteAddr()获取IP地址* 如果使用了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP地址，X-Forwarded-For中第一个非unknown的有效IP字符串，则为真实IP地址*/public static String getIpAddr(HttpServletRequest request) {if (request == null) {return "unknown";}String ip = request.getHeader("x-forwarded-for");if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("Proxy-Client-IP");}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("X-Forwarded-For");}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("WL-Proxy-Client-IP");}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("X-Real-IP");}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getRemoteAddr();}return "0:0:0:0:0:0:0:1".equals(ip) ? LOCAL_IP : ip;}public static boolean internalIp(String ip) {boolean res = false;byte[] addr = textToNumericFormatV4(ip);if (addr != null && ip != null) {res = internalIp(addr) || LOCAL_IP.equals(ip);}return res;}private static boolean internalIp(byte[] addr) {final byte b0 = addr[0];final byte b1 = addr[1];// 10.x.x.x/8final byte SECTION_1 = 0x0A;// 172.16.x.x/12final byte SECTION_2 = (byte) 0xAC;final byte SECTION_3 = (byte) 0x10;final byte SECTION_4 = (byte) 0x1F;// 192.168.x.x/16final byte SECTION_5 = (byte) 0xC0;final byte SECTION_6 = (byte) 0xA8;boolean flag = false;switch (b0) {case SECTION_1:flag = true;break;case SECTION_2:if (b1 >= SECTION_3 && b1 <= SECTION_4) {flag = true;}break;case SECTION_5:if (b1 == SECTION_6) {flag = true;}break;default:break;}return flag;}/*** 将IPv4地址转换成字节*IPv4地址* @param text* @return byte 字节*/public static byte[] textToNumericFormatV4(String text) {if (text.length() == 0) {return null;}byte[] bytes = new byte[4];String[] elements = text.split("\\.", -1);try {long l;int i;switch (elements.length) {case 1:l = Long.parseLong(elements[0]);if ((l < 0L) || (l > 4294967295L))return null;bytes[0] = (byte) (int) (l >> 24 & 0xFF);bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF);bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);bytes[3] = (byte) (int) (l & 0xFF);break;case 2:l = Integer.parseInt(elements[0]);if ((l < 0L) || (l > 255L))return null;bytes[0] = (byte) (int) (l & 0xFF);l = Integer.parseInt(elements[1]);if ((l < 0L) || (l > 16777215L))return null;bytes[1] = (byte) (int) (l >> 16 & 0xFF);bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);bytes[3] = (byte) (int) (l & 0xFF);break;case 3:for (i = 0; i < 2; ++i) {l = Integer.parseInt(elements[i]);if ((l < 0L) || (l > 255L))return null;bytes[i] = (byte) (int) (l & 0xFF);}l = Integer.parseInt(elements[2]);if ((l < 0L) || (l > 65535L))return null;bytes[2] = (byte) (int) (l >> 8 & 0xFF);bytes[3] = (byte) (int) (l & 0xFF);break;case 4:for (i = 0; i < 4; ++i) {l = Integer.parseInt(elements[i]);if ((l < 0L) || (l > 255L))return null;bytes[i] = (byte) (int) (l & 0xFF);}break;default:return null;}} catch (NumberFormatException e) {log.error("数字格式化异常",e);return null;}return bytes;}public static String getLocalIP() {String ip = "";if (System.getProperty("os.name").toLowerCase().startsWith("windows")) {InetAddress addr;try {addr = InetAddress.getLocalHost();ip = addr.getHostAddress();} catch (UnknownHostException e) {log.error("获取失败",e);}return ip;} else {try {Enumeration<?> e1 = (Enumeration<?>) NetworkInterface.getNetworkInterfaces();while (e1.hasMoreElements()) {NetworkInterface ni = (NetworkInterface) e1.nextElement();if (!ni.getName().equals("eth0")) {continue;} else {Enumeration<?> e2 = ni.getInetAddresses();while (e2.hasMoreElements()) {InetAddress ia = (InetAddress) e2.nextElement();if (ia instanceof Inet6Address)continue;ip = ia.getHostAddress();return ip;}break;}}} catch (SocketException e) {log.error("获取失败",e);}}return "";}
}
6.自定义日志注解
import java.lang.annotation.*;
//Type 代表可以放在类上面 Methon代表可以放在方法上
@Target({ElementType.TYPE_USE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface LogAnnotation {String module() default "";String operator() default "";
}import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;@Component
@Aspect //切面 定义了通知和切点的关系
@Slf4j
public class LogAspect {@Autowiredprivate RabbitTemplate rabbitTemplate;@Pointcut("@annotation(com.chk.commom.aop.Log.LogAnnotation)")public void pt(){}//环绕通知@Around("pt()")public Object log(ProceedingJoinPoint point) throws Throwable {long beginTime = System.currentTimeMillis();//执行方法Object result = point.proceed();//执行时长(毫秒)long time = System.currentTimeMillis() - beginTime;//保存日志recordLog(point, time);return result;}private void recordLog(ProceedingJoinPoint joinPoint, long time) {MethodSignature signature = (MethodSignature) joinPoint.getSignature();Method method = signature.getMethod();LogAnnotation logAnnotation = method.getAnnotation(LogAnnotation.class);log.info("=====================log start================================");log.info("业务 :{}",logAnnotation.module());//请求的方法名String className = joinPoint.getTarget().getClass().getName();String methodName = signature.getName();log.info("请求的方法地址:{}",className + "." + methodName + "()");//获取request 设置IP地址HttpServletRequest request = HttpContextUtils.getHttpServletRequest();// log.info("用户ip:{}", IpUtil.getIpAddr(request)); 此处ip包在上方log.info("执行时间 : {} ms",time);log.info("=====================log end================================");}}7.图片随机验证码生成（后端）
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Random;/*** @author 阿楠* code生成工具类*/
public class CodeUtils {/*** 生成验证码图片的宽度*/private int width = 100;/*** 生成验证码图片的高度*/private int height = 30;/*** 字符样式*/private String[] fontNames = { "宋体", "楷体", "隶书", "微软雅黑" };/*** 定义验证码图片的背景颜色为白色*/private Color bgColor = new Color(255, 255, 255);/*** 生成随机*/private Random random = new Random();/*** 定义code字符*/private String codes = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";/*** 记录随机字符串*/private String text;/*** 获取一个随意颜色* @return*/private Color randomColor() {int red = random.nextInt(150);int green = random.nextInt(150);int blue = random.nextInt(150);return new Color(red, green, blue);}/*** 获取一个随机字体** @return*/private Font randomFont() {String name = fontNames[random.nextInt(fontNames.length)];int style = random.nextInt(4);int size = random.nextInt(5) + 24;return new Font(name, style, size);}/*** 获取一个随机字符** @return*/private char randomChar() {return codes.charAt(random.nextInt(codes.length()));}/*** 创建一个空白的BufferedImage对象** @return*/private BufferedImage createImage() {BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);Graphics2D g2 = (Graphics2D) image.getGraphics();//设置验证码图片的背景颜色g2.setColor(bgColor);g2.fillRect(0, 0, width, height);return image;}public BufferedImage getImage() {BufferedImage image = createImage();Graphics2D g2 = (Graphics2D) image.getGraphics();StringBuffer sb = new StringBuffer();for (int i = 0; i < 4; i++) {String s = randomChar() + "";sb.append(s);g2.setColor(randomColor());g2.setFont(randomFont());float x = i * width * 1.0f / 4;g2.drawString(s, x, height - 8);}this.text = sb.toString();drawLine(image);return image;}/*** 绘制干扰线** @param image*/private void drawLine(BufferedImage image) {Graphics2D g2 = (Graphics2D) image.getGraphics();int num = 5;for (int i = 0; i < num; i++) {int x1 = random.nextInt(width);int y1 = random.nextInt(height);int x2 = random.nextInt(width);int y2 = random.nextInt(height);g2.setColor(randomColor());g2.setStroke(new BasicStroke(1.5f));g2.drawLine(x1, y1, x2, y2);}}public String getText() {return text;}public static void output(BufferedImage image, OutputStream out) throws IOException {ImageIO.write(image, "JPEG", out);}
}
使用方法，类似
@GetMapping("/code")@LogAnnotation(module = "验证码")public void code(HttpServletRequest request,HttpServletResponse res) throws IOException {CodeUtils code = new CodeUtils();BufferedImage image = code.getImage();String text = code.getText();HttpSession session = request.getSession(true);session.setAttribute("code", text);System.out.println(text);
/*** 图片传输*/CodeUtils.output(image,res.getOutputStream());/*** 变为 数据 传输*/
//
// ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
// ImageIO.write(image, "jpg", byteArrayOutputStream);
// byte[] imageBytes = byteArrayOutputStream.toByteArray();
//
// // 将字节数组转换为Base64编码的字符串
// String base64Image = Base64.getEncoder().encodeToString(imageBytes);
//
// // 拼接成data:image格式
// String dataURL = "data:image/jpeg;base64," + base64Image;
//
//
// return dataURL;
// System.out.println("data:image格式：" + dataURL);/*** 变为 data:image 数据 传输*/}8.非空判断类
import java.util.Collection;
import java.util.Map;public class VoidJudgeUtils {public static boolean isBlank(Object obj) {if (obj == null)return true;if (obj instanceof CharSequence)return ((CharSequence) obj).length() == 0;if (obj instanceof Collection)return ((Collection) obj).isEmpty();if (obj instanceof Map)return ((Map) obj).isEmpty();if (obj instanceof Object[]) {Object[] object = (Object[]) obj;if (object.length == 0) {return true;}boolean empty = true;for (int i = 0; i < object.length; i++) {if (!isBlank(object[i])) {empty = false;break;}}return empty;}return false;}public static boolean isNotBlank(Object obj) {return !isBlank(obj);}
}
-mojo binding)
+连接mysql数据库)
)
