springboot中request和response的加解密实现代码

2022-11-13 09:11:13 代码 springboot 加解密

1、新建一个springboot工程，pom依赖如下

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-WEB</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

2、自定义加密、解密的注解

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Encrypt {
}
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD, ElementType.PARAMETER})
public @interface Decrypt {
}

其中加密注解放在方法上，解密注解可以放在方法上，也可以放在参数上。

3、加密算法

定义一个加密工具类，加密算法分为对称加密和非对称加密，本次使用java自带的Ciphor来实现对称加密，使用AES算法，如下

public class AESUtils {
    private static final String AES_ALGoRITHM = "AES/ECB/PKCS5Padding";
    private static final String key = "1234567890abcdef";
    
    private static Cipher getCipher(byte[] key, int model) throws Exception {
        SecreTKEySpec secretKeySpec = new SecretKeySpec(key, "AES");
        Cipher cipher = Cipher.getInstance(AES_ALGORITHM);
        cipher.init(model, secretKeySpec);
        return cipher;
    }
    
    public static String encrypt(byte[] data, byte[] key) throws Exception {
        Cipher cipher = getCipher(key, Cipher.ENCRYPT_MODE);
        return Base64.getEncoder().encodeToString(cipher.doFinal(data));
    }
    
    public static byte[] decrypt(byte[] data, byte[] key) throws Exception {
        Cipher cipher = getCipher(key, Cipher.DECRYPT_MODE);
        return cipher.doFinal(Base64.getDecoder().decode(data));
    }
}

其中加密后的数据使用Base64算法进行编码，获取可读字符串；解密的输入也是一个Base64编码之后的字符串，先进行解码再进行解密。

4、对请求数据进行解密处理

@EnableConfigurationProperties(KeyProperties.class)
@ControllerAdvice
public class DecryptRequest extends RequestBodyAdviceAdapter {

    @Autowired
    private KeyProperties keyProperties;

    
    @Override
    public boolean supports(MethodParameter methodParameter, Type targetType, Class<? extends HttpMessageConverter<?>> converterType) {
        return methodParameter.hasMethodAnnotation(Decrypt.class) || methodParameter.hasParameterAnnotation(Decrypt.class);
    }

    
    @Override
    public HttpInputMessage beforeBodyRead(final HttpInputMessage inputMessage, MethodParameter parameter, Type targetType, Class<? extends HttpMessageConverter<?>> converterType) throws IOException {
        byte[] body = new byte[inputMessage.getBody().available()];
        inputMessage.getBody().read(body);
        try {
            byte[] keyBytes = keyProperties.getKey().getBytes();
            byte[] decrypt = AESUtils.decrypt(body, keyBytes);
            final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(decrypt);
            return new HttpInputMessage() {
                @Override
                public InputStream getBody() throws IOException {
                    return byteArrayInputStream;
                }

                @Override
                public HttpHeaders getHeaders() {
                    return inputMessage.getHeaders();
                }
            };
        } catch (Exception e) {
            e.printStackTrace();
        }
        return super.beforeBodyRead(inputMessage, parameter, targetType, converterType);
    }
}

5、对响应数据进行加密处理

@EnableConfigurationProperties(KeyProperties.class)
@ControllerAdvice
public class EncryptResponse implements ResponseBodyAdvice<RespBean> {

    private ObjectMapper objectMapper = new ObjectMapper();

    @Autowired
    private KeyProperties keyProperties;

    
    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> converterType) {
        return methodParameter.hasMethodAnnotation(Encrypt.class);
    }

    
    @Override
    public RespBean beforeBodyWrite(RespBean body, MethodParameter returnType, MediaType selectedContentType, Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        byte[] keyBytes = keyProperties.getKey().getBytes();
        try {
            if (body.getMsg() != null) {
                body.setMsg(AESUtils.encrypt(body.getMsg().getBytes(), keyBytes));
            }
            if (body.getObj() != null) {
                body.setObj(AESUtils.encrypt(objectMapper.writeValueAsBytes(body.getObj()), keyBytes));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return body;
    }
}

6、加解密的key的配置类，从配置文件中读取

@ConfigurationProperties(prefix = "spring.encrypt")
public class KeyProperties {

    private final static String DEFAULT_KEY = "1234567890abcdef";
    private String key = DEFAULT_KEY;

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }
}

7、测试

application中的key配置

spring.encrypt.key=1234567890abcdef

	@GetMapping("/user")
    @Encrypt
    public RespBean getUser() {
        User user = new User();
        user.setId(1L);
        user.setUsername("caocao");
        return RespBean.ok("ok", user);
    }

    @PostMapping("/user")
    public RespBean addUser(@RequestBody @Decrypt User user) {
        System.out.println("user = " + user);
        return RespBean.ok("ok", user);
    }

测试结果

在这里插入图片描述

其中get请求的接口使用了@Encrypt注解，对响应数据进行了加密处理；post请求的接口使用了@Decrypt注解作用在参数上，对请求数据进行了解密处理。

到此这篇关于springboot中request和response的加解密实现的文章就介绍到这了,更多相关springboot加解密内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！

相关文章