Spring Boot 接口加解密，新姿势来了！ - IT评测·应用市场-qidao123.com

InputStreamHttpServletRequestWrapper
package xyz.hlh.cryptotest.utils;
import org.apache.commons.io.IOUtils;
import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
/**
* 请求流支持多次获取
*/
public class InputStreamHttpServletRequestWrapper extends HttpServletRequestWrapper {
/**
* 用于缓存输入流
*/
private ByteArrayOutputStream cachedBytes;
public InputStreamHttpServletRequestWrapper(HttpServletRequest request) {
super(request);
}
@Override
public ServletInputStream getInputStream() throws IOException {
if (cachedBytes == null) {
// 首次获取流时，将流放入缓存输入流中
cacheInputStream();
}
// 从缓存输入流中获取流并返回
return new CachedServletInputStream(cachedBytes.toByteArray());
}
@Override
public BufferedReader getReader() throws IOException {
return new BufferedReader(new InputStreamReader(getInputStream()));
}
/**
* 首次获取流时，将流放入缓存输入流中
*/
private void cacheInputStream() throws IOException {
// 缓存输入流以便多次读取。为了方便, 我使用 org.apache.commons IOUtils
cachedBytes = new ByteArrayOutputStream();
IOUtils.copy(super.getInputStream(), cachedBytes);
}
/**
* 读取缓存的请求正文的输入流
* <p>
* 用于根据缓存输入流创建一个可返回的
*/
public static class CachedServletInputStream extends ServletInputStream {
private final ByteArrayInputStream input;
public CachedServletInputStream(byte[] buf) {
// 从缓存的请求正文创建一个新的输入流
input = new ByteArrayInputStream(buf);
}
@Override
public boolean isFinished() {
return false;
}
@Override
public boolean isReady() {
return false;
}
@Override
public void setReadListener(ReadListener listener) {
}
@Override
public int read() throws IOException {
return input.read();
}
}
}
HttpServletRequestInputStreamFilter
package xyz.hlh.cryptotest.filter;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import xyz.hlh.cryptotest.utils.InputStreamHttpServletRequestWrapper;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import static org.springframework.core.Ordered.HIGHEST_PRECEDENCE;
/**
* @author HLH
* @description:
* 请求流转换为多次读取的请求流过滤器
* @email 17703595860@163.com
* @date : Created in 2022/2/4 9:58
*/
@Component
@Order(HIGHEST_PRECEDENCE + 1) // 优先级最高
public class HttpServletRequestInputStreamFilter implements Filter {
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
// 转换为可以多次获取流的request
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
InputStreamHttpServletRequestWrapper inputStreamHttpServletRequestWrapper = new InputStreamHttpServletRequestWrapper(httpServletRequest);
// 放行
chain.doFilter(inputStreamHttpServletRequestWrapper, response);
}
}

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ParamException
package xyz.hlh.cryptotest.exception;
import lombok.Getter;
import java.util.List;
/**
* @author HLH
* @description 自定义参数异常
* @email 17703595860@163.com
* @date Created in 2021/8/10 下午10:56
*/
@Getter
public class ParamException extends Exception {
private final List<String> fieldList;
private final List<String> msgList;
public ParamException(List<String> fieldList, List<String> msgList) {
this.fieldList = fieldList;
this.msgList = msgList;
}
}
ValidationUtils
package xyz.hlh.cryptotest.utils;
import xyz.hlh.cryptotest.exception.CustomizeException;
import xyz.hlh.cryptotest.exception.ParamException;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
/**
* @author HLH
* @description 验证工具类
* @email 17703595860@163.com
* @date Created in 2021/8/10 下午10:56
*/
public class ValidationUtils {
private static final Validator VALIDATOR = Validation.buildDefaultValidatorFactory().getValidator();
/**
* 验证数据
* @param object 数据
*/
public static void validate(Object object) throws CustomizeException {
Set<ConstraintViolation<Object>> validate = VALIDATOR.validate(object);
// 验证结果异常
throwParamException(validate);
}
/**
* 验证数据(分组)
* @param object 数据
* @param groups 所在组
*/
public static void validate(Object object, Class<?> ... groups) throws CustomizeException {
Set<ConstraintViolation<Object>> validate = VALIDATOR.validate(object, groups);
// 验证结果异常
throwParamException(validate);
}
/**
* 验证数据中的某个字段(分组)
* @param object 数据
* @param propertyName 字段名称
*/
public static void validate(Object object, String propertyName) throws CustomizeException {
Set<ConstraintViolation<Object>> validate = VALIDATOR.validateProperty(object, propertyName);
// 验证结果异常
throwParamException(validate);
}
/**
* 验证数据中的某个字段(分组)
* @param object 数据
* @param propertyName 字段名称
* @param groups 所在组
*/
public static void validate(Object object, String propertyName, Class<?> ... groups) throws CustomizeException {
Set<ConstraintViolation<Object>> validate = VALIDATOR.validateProperty(object, propertyName, groups);
// 验证结果异常
throwParamException(validate);
}
/**
* 验证结果异常
* @param validate 验证结果
*/
private static void throwParamException(Set<ConstraintViolation<Object>> validate) throws CustomizeException {
if (validate.size() > 0) {
List<String> fieldList = new LinkedList<>();
List<String> msgList = new LinkedList<>();
for (ConstraintViolation<Object> next : validate) {
fieldList.add(next.getPropertyPath().toString());
msgList.add(next.getMessage());
}
throw new ParamException(fieldList, msgList);
}
}
}

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# 模式 cn.hutool.crypto.Mode
crypto.mode=CTS
# 补码方式 cn.hutool.crypto.Mode
crypto.padding=PKCS5Padding
# 秘钥
crypto.key=testkey123456789
# 盐
crypto.iv=testiv1234567890

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org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
xyz.hlh.crypto.config.AppConfig

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package xyz.hlh.crypto.config;
import cn.hutool.crypto.Mode;
import cn.hutool.crypto.Padding;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import java.io.Serializable;
/**
* @author HLH
* @description: AES需要的配置参数
* @email 17703595860@163.com
* @date : Created in 2022/2/4 13:16
*/
@Configuration
@ConfigurationProperties(prefix = "crypto")
@PropertySource("classpath:crypto.properties")
@Data
@EqualsAndHashCode
@Getter
public class CryptConfig implements Serializable {
private Mode mode;
private Padding padding;
private String key;
private String iv;
}

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package xyz.hlh.crypto.config;
import cn.hutool.crypto.symmetric.AES;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.annotation.Resource;
import java.nio.charset.StandardCharsets;
/**
* @author HLH
* @description: 自动配置类
* @email 17703595860@163.com
* @date : Created in 2022/2/4 13:12
*/
@Configuration
public class AppConfig {
@Resource
private CryptConfig cryptConfig;
@Bean
public AES aes() {
return new AES(cryptConfig.getMode(), cryptConfig.getPadding(), cryptConfig.getKey().getBytes(StandardCharsets.UTF_8), cryptConfig.getIv().getBytes(StandardCharsets.UTF_8));
}
}

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package xyz.hlh.crypto.advice;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.SneakyThrows;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice;
import xyz.hlh.crypto.annotation.DecryptionAnnotation;
import xyz.hlh.crypto.common.exception.ParamException;
import xyz.hlh.crypto.constant.CryptoConstant;
import xyz.hlh.crypto.entity.RequestBase;
import xyz.hlh.crypto.entity.RequestData;
import xyz.hlh.crypto.util.AESUtil;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.lang.reflect.Type;
/**
* @author HLH
* @description: requestBody 自动解密
* @email 17703595860@163.com
* @date : Created in 2022/2/4 15:12
*/
@ControllerAdvice
public class DecryptRequestBodyAdvice implements RequestBodyAdvice {
@Autowired
private ObjectMapper objectMapper;
/**
* 方法上有DecryptionAnnotation注解的，进入此拦截器
* @param methodParameter 方法参数对象
* @param targetType 参数的类型
* @param converterType 消息转换器
* @return true，进入，false，跳过
*/
@Override
public boolean supports(MethodParameter methodParameter, Type targetType, Class<? extends HttpMessageConverter<?>> converterType) {
return methodParameter.hasMethodAnnotation(DecryptionAnnotation.class);
}
@Override
public HttpInputMessage beforeBodyRead(HttpInputMessage inputMessage, MethodParameter parameter, Type targetType, Class<? extends HttpMessageConverter<?>> converterType) throws IOException {
return inputMessage;
}
/**
* 转换之后，执行此方法，解密，赋值
* @param body spring解析完的参数
* @param inputMessage 输入参数
* @param parameter 参数对象
* @param targetType 参数类型
* @param converterType 消息转换类型
* @return 真实的参数
*/
@SneakyThrows
@Override
public Object afterBodyRead(Object body, HttpInputMessage inputMessage, MethodParameter parameter, Type targetType, Class<? extends HttpMessageConverter<?>> converterType) {
// 获取request
RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) requestAttributes;
if (servletRequestAttributes == null) {
throw new ParamException("request错误");
}
HttpServletRequest request = servletRequestAttributes.getRequest();
// 获取数据
ServletInputStream inputStream = request.getInputStream();
RequestData requestData = objectMapper.readValue(inputStream, RequestData.class);
if (requestData == null || StringUtils.isBlank(requestData.getText())) {
throw new ParamException("参数错误");
}
// 获取加密的数据
String text = requestData.getText();
// 放入解密之前的数据
request.setAttribute(CryptoConstant.INPUT_ORIGINAL_DATA, text);
// 解密
String decryptText = null;
try {
decryptText = AESUtil.decrypt(text);
} catch (Exception e) {
throw new ParamException("解密失败");
}
if (StringUtils.isBlank(decryptText)) {
throw new ParamException("解密失败");
}
// 放入解密之后的数据
request.setAttribute(CryptoConstant.INPUT_DECRYPT_DATA, decryptText);
// 获取结果
Object result = objectMapper.readValue(decryptText, body.getClass());
// 强制所有实体类必须继承RequestBase类，设置时间戳
if (result instanceof RequestBase) {
// 获取时间戳
Long currentTimeMillis = ((RequestBase) result).getCurrentTimeMillis();
// 有效期 60秒
long effective = 60*1000;
// 时间差
long expire = System.currentTimeMillis() - currentTimeMillis;
// 是否在有效期内
if (Math.abs(expire) > effective) {
throw new ParamException("时间戳不合法");
}
// 返回解密之后的数据
return result;
} else {
throw new ParamException(String.format("请求参数类型：%s 未继承：%s", result.getClass().getName(), RequestBase.class.getName()));
}
}
/**
* 如果body为空，转为空对象
* @param body spring解析完的参数
* @param inputMessage 输入参数
* @param parameter 参数对象
* @param targetType 参数类型
* @param converterType 消息转换类型
* @return 真实的参数
*/
@SneakyThrows
@Override
public Object handleEmptyBody(Object body, HttpInputMessage inputMessage, MethodParameter parameter, Type targetType, Class<? extends HttpMessageConverter<?>> converterType) {
String typeName = targetType.getTypeName();
Class<?> bodyClass = Class.forName(typeName);
return bodyClass.newInstance();
}
}

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package xyz.hlh.crypto.advice;
import cn.hutool.json.JSONUtil;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.SneakyThrows;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
import sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl;
import xyz.hlh.crypto.annotation.EncryptionAnnotation;
import xyz.hlh.crypto.common.entity.Result;
import xyz.hlh.crypto.common.exception.CryptoException;
import xyz.hlh.crypto.entity.RequestBase;
import xyz.hlh.crypto.util.AESUtil;
import java.lang.reflect.Type;
/**
* @author HLH
* @description:
* @email 17703595860@163.com
* @date : Created in 2022/2/4 15:12
*/
@ControllerAdvice
public class EncryptResponseBodyAdvice implements ResponseBodyAdvice<Result<?>> {
@Autowired
private ObjectMapper objectMapper;
@Override
public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
ParameterizedTypeImpl genericParameterType = (ParameterizedTypeImpl)returnType.getGenericParameterType();
// 如果直接是Result，则返回
if (genericParameterType.getRawType() == Result.class && returnType.hasMethodAnnotation(EncryptionAnnotation.class)) {
return true;
}
if (genericParameterType.getRawType() != ResponseEntity.class) {
return false;
}
// 如果是ResponseEntity<Result>
for (Type type : genericParameterType.getActualTypeArguments()) {
if (((ParameterizedTypeImpl) type).getRawType() == Result.class && returnType.hasMethodAnnotation(EncryptionAnnotation.class)) {
return true;
}
}
return false;
}
@SneakyThrows
@Override
public Result<?> beforeBodyWrite(Result<?> body, MethodParameter returnType, MediaType selectedContentType, Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
// 加密
Object data = body.getData();
// 如果data为空，直接返回
if (data == null) {
return body;
}
// 如果是实体，并且继承了Request，则放入时间戳
if (data instanceof RequestBase) {
((RequestBase)data).setCurrentTimeMillis(System.currentTimeMillis());
}
String dataText = JSONUtil.toJsonStr(data);
// 如果data为空，直接返回
if (StringUtils.isBlank(dataText)) {
return body;
}
// 如果位数小于16，报错
if (dataText.length() < 16) {
throw new CryptoException("加密失败，数据小于16位");
}
String encryptText = AESUtil.encryptHex(dataText);
return Result.builder()
.status(body.getStatus())
.data(encryptText)
.message(body.getMessage())
.build();
}
}

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spring:
mvc:
format:
date-time: yyyy-MM-dd HH:mm:ss
date: yyyy-MM-dd
# 日期格式化
jackson:
date-format: yyyy-MM-dd HH:mm:ss

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package xyz.hlh.crypto.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import org.hibernate.validator.constraints.Range;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import java.io.Serializable;
import java.util.Date;
/**
* @author HLH
* @description: Teacher实体类，使用SpringBoot的validation校验
* @email 17703595860@163.com
* @date : Created in 2022/2/4 10:21
*/
@Data
@NoArgsConstructor
@AllArgsConstructor
@EqualsAndHashCode(callSuper = true)
public class Teacher extends RequestBase implements Serializable {
@NotBlank(message = "姓名不能为空")
private String name;
@NotNull(message = "年龄不能为空")
@Range(min = 0, max = 150, message = "年龄不合法")
private Integer age;
@NotNull(message = "生日不能为空")
private Date birthday;
}

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