mybatis特定字段注解加解密（SM2加密）

落日流年2023-11-10 12:04

1、创建特定字段注解

字段注解

java 复制代码 
import java.lang.annotation.*;

@Inherited
@Target({ElementType.FIELD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface EncryptField {
}

类注解

java 复制代码 
import java.lang.annotation.*;

@Inherited
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface SensitiveClass {
}

2、创建加密方法

java 复制代码 
import org.bouncycastle.asn1.gm.GMNamedCurves;
import org.bouncycastle.asn1.x9.X9ECParameters;
import org.bouncycastle.crypto.engines.SM2Engine;
import org.bouncycastle.crypto.params.ECDomainParameters;
import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
import org.bouncycastle.crypto.params.ECPublicKeyParameters;
import org.bouncycastle.crypto.params.ParametersWithRandom;
import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey;
import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.util.encoders.Hex;

import java.math.BigInteger;
import java.security.*;
import java.security.spec.ECGenParameterSpec;
import java.util.HashMap;
import java.util.Map;


public class SM2Utils {


    /**
     * SM2加密算法
     *
     * @param publicKey 公钥
     * @param data      明文数据
     * @return
     */
    public static String encrypt(String publicKey, String data) {
        // 获取一条SM2曲线参数
        X9ECParameters sm2ECParameters = GMNamedCurves.getByName("sm2p256v1");
        // 构造ECC算法参数，曲线方程、椭圆曲线G点、大整数N
        ECDomainParameters domainParameters = new ECDomainParameters(
                sm2ECParameters.getCurve(), sm2ECParameters.getG(),
                sm2ECParameters.getN());
        //提取公钥点
        ECPoint pukPoint = sm2ECParameters.getCurve()
                .decodePoint(Hex.decode(publicKey));
        // 公钥前面的02或者03表示是压缩公钥，04表示未压缩公钥, 04的时候，可以去掉前面的04
        ECPublicKeyParameters publicKeyParameters = new ECPublicKeyParameters(
                pukPoint, domainParameters);

        SM2Engine sm2Engine = new SM2Engine(SM2Engine.Mode.C1C3C2);
        // 设置sm2为加密模式
        sm2Engine.init(true,
                new ParametersWithRandom(publicKeyParameters, new SecureRandom()));

        byte[] arrayOfBytes = null;
        try {
            byte[] in = data.getBytes();
            arrayOfBytes = sm2Engine.processBlock(in, 0, in.length);
        } catch (Exception e) {
            System.out.println("SM2加密时出现异常:" + e.getMessage());
        }
        return Hex.toHexString(arrayOfBytes);

    }

    /**
     * SM2解密算法
     *
     * @param privateKey 私钥
     * @param cipherData 密文数据
     * @return
     */
    public static String decrypt(String privateKey, String cipherData) {
        // 使用BC库加解密时密文以04开头，传入的密文前面没有04则补上
        if (!cipherData.startsWith("04")) {
            cipherData = "04" + cipherData;
        }
        byte[] cipherDataByte = Hex.decode(cipherData);
        BigInteger privateKeyD = new BigInteger(privateKey, 16);
        //获取一条SM2曲线参数
        X9ECParameters sm2ECParameters = GMNamedCurves.getByName("sm2p256v1");
        //构造domain参数
        ECDomainParameters domainParameters = new ECDomainParameters(
                sm2ECParameters.getCurve(), sm2ECParameters.getG(),
                sm2ECParameters.getN());
        ECPrivateKeyParameters privateKeyParameters = new ECPrivateKeyParameters(
                privateKeyD, domainParameters);

        SM2Engine sm2Engine = new SM2Engine(SM2Engine.Mode.C1C3C2);
        // 设置sm2为解密模式
        sm2Engine.init(false, privateKeyParameters);

        String result = "";
        try {
            byte[] arrayOfBytes = sm2Engine.processBlock(cipherDataByte, 0,
                    cipherDataByte.length);
            return new String(arrayOfBytes);
        } catch (Exception e) {
            System.out.println("SM2解密时出现异常:" + e.getMessage());
        }
        return result;
    }

    //生成密钥
    public static Map<String, String> getKey() throws Exception {
        ECGenParameterSpec sm2Spec = new ECGenParameterSpec("sm2p256v1");
        // 获取一个椭圆曲线类型的密钥对生成器
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", new BouncyCastleProvider());
        // 使用SM2参数初始化生成器
        kpg.initialize(sm2Spec);
        // 获取密钥对
        KeyPair keyPair = kpg.generateKeyPair();
        PublicKey publicKey = keyPair.getPublic();
        BCECPublicKey p = (BCECPublicKey) publicKey;
        PrivateKey privateKey = keyPair.getPrivate();
        BCECPrivateKey s = (BCECPrivateKey) privateKey;
        Map<String, String> key = new HashMap<>();
        key.put("publicKey", Hex.toHexString(p.getQ().getEncoded(false)));
        key.put("privateKey", Hex.toHexString(s.getD().toByteArray()));
        return key;
    }

    public static void main(String[] args) throws Exception {
        String publicKey = "042b62ad17c0a3191bc46df6b9d93eaddc64809755a913dcb348da2c1d186f2523077cff9fa52fe9e0da2d3d4f01307397f680589";
        String privateKey = "0098dd20430be7810c618201010ec6fc32868a9afd9da8";
        String phone = "1358273";
        String encryptRes = encrypt(publicKey, phone);
        System.out.println("手机号" + phone + "加密:" + encryptRes);
        System.out.println("手机号" + phone + "解密:" + decrypt(privateKey, encryptRes));
    }
}

3、创建mybatis拦截器

java 复制代码 
import com.xinjian.common.encrypt.EncryptField;
import com.xinjian.common.encrypt.SM2Utils;
import com.xinjian.common.encrypt.SensitiveClass;
import com.xinjian.common.utils.StringUtils;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.ibatis.executor.parameter.ParameterHandler;
import org.apache.ibatis.executor.resultset.ResultSetHandler;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Signature;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.stereotype.Component;

import java.lang.reflect.Field;
import java.sql.PreparedStatement;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Objects;
import java.util.Properties;

@Intercepts({
        @Signature(type = ParameterHandler.class, method = "setParameters", args = PreparedStatement.class),
        @Signature(type = ResultSetHandler.class, method = "handleResultSets", args = {Statement.class})
})
@Component
public class MybatisInterceptor implements Interceptor {

    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        Object target = invocation.getTarget();
        //拦截sql结果处理器
        if (target instanceof ResultSetHandler) {
            return resultDecrypt(invocation);
        }
        //拦截sql参数处理器
        if (target instanceof ParameterHandler) {
            return parameterEncrypt(invocation);
        }
        return invocation.proceed();
    }

    /**
     * 对mybatis映射结果进行字段解密
     *
     * @param invocation 参数
     * @return 结果
     * @throws Throwable 异常
     */
    private Object resultDecrypt(Invocation invocation) throws Throwable {
        //取出查询的结果
        Object resultObject = invocation.proceed();
        if (Objects.isNull(resultObject)) {
            return null;
        }
        //基于selectList
        if (resultObject instanceof ArrayList) {
            ArrayList resultList = (ArrayList) resultObject;
            if (CollectionUtils.isEmpty(resultList) || !needToDecrypt(resultList.get(0))) {
                return resultObject;
            }
            for (Object result : resultList) {
                //逐一解密
                decrypt(result);
            }
            //基于selectOne
        } else {
            if (needToDecrypt(resultObject)) {
                decrypt(resultObject);
            }
        }
        return resultObject;
    }

    /**
     * mybatis映射参数进行加密
     *
     * @param invocation 参数
     * @return 结果
     * @throws Throwable 异常
     */
    private Object parameterEncrypt(Invocation invocation) throws Throwable {
        //@Signature 指定了 type= parameterHandler 后，这里的 invocation.getTarget() 便是parameterHandler
        //若指定ResultSetHandler ，这里则能强转为ResultSetHandler
        ParameterHandler parameterHandler = (ParameterHandler) invocation.getTarget();
        // 获取参数对像，即 mapper 中 paramsType 的实例
        Field parameterField = parameterHandler.getClass().getDeclaredField("parameterObject");
        parameterField.setAccessible(true);
        //取出实例
        Object parameterObject = parameterField.get(parameterHandler);
        if (null == parameterObject) {
            return invocation.proceed();
        }
        Class<?> parameterObjectClass = parameterObject.getClass();
        //校验该实例的类是否被@SensitiveEntity所注解
        SensitiveClass sensitiveEntity = AnnotationUtils.findAnnotation(parameterObjectClass, SensitiveClass.class);
        //未被@SensitiveEntity所注解 则为null
        if (Objects.isNull(sensitiveEntity)) {
            return invocation.proceed();
        }
        //取出当前当前类所有字段，传入加密方法
        Field[] declaredFields = parameterObjectClass.getDeclaredFields();
        encrypt(declaredFields, parameterObject);
        return invocation.proceed();
    }

    public Object encrypt(Field[] declaredFields, Object paramsObject) throws Exception {
        String publicKey = "042b62ad17c0a3191bceaddc64809755a913dcb348da2c1d186f2523077cff9fa52fe9e0da2d3d4f01307397f680589";
        for (Field field : declaredFields) {
            //取出所有被EncryptDecryptField注解的字段
            EncryptField sensitiveField = field.getAnnotation(EncryptField.class);
            if (Objects.isNull(sensitiveField)) {
                continue;
            }
            field.setAccessible(true);
            Object object = field.get(paramsObject);
            //暂时只实现String类型的加密
            if (object instanceof String) {
                String value = (String) object;
                //如果映射字段值为空,并且以==结尾则跳过不进行加密
                if (!StringUtils.isNotBlank(value)) {
                    continue;
                }
                //加密
                field.set(paramsObject, SM2Utils.encrypt(publicKey, value));
            }
        }
        return paramsObject;

    }

    public Object decrypt(Object result) throws Exception {
        String privateKey = "0098dd20430be7818e3e64430c6ec6fc32868a9afd9da8";
        //取出resultType的类
        Class<?> resultClass = result.getClass();
        Field[] declaredFields = resultClass.getDeclaredFields();
        for (Field field : declaredFields) {
            //取出所有被EncryptDecryptField注解的字段
            EncryptField sensitiveField = field.getAnnotation(EncryptField.class);
            if (Objects.isNull(sensitiveField)) {
                continue;
            }
            field.setAccessible(true);
            Object object = field.get(result);
            //只支持String的解密
            if (object instanceof String) {
                String value = (String) object;
                //如果映射字段值为空,并且不已==结尾则跳过不进行解密
                if (!StringUtils.isNotBlank(value)) {
                    continue;
                }
                //对注解的字段进行逐一解密
                field.set(result, SM2Utils.decrypt(privateKey, value));
            }
        }
        return result;
    }

    /**
     * 判断是否包含需要加解密对象
     *
     * @param object 参数
     * @return 结果
     */
    private boolean needToDecrypt(Object object) {
        Class<?> objectClass = object.getClass();
        SensitiveClass sensitiveEntity = AnnotationUtils.findAnnotation(objectClass, SensitiveClass.class);
        return Objects.nonNull(sensitiveEntity);
    }

    @Override
    public Object plugin(Object target) {
        return Interceptor.super.plugin(target);
    }

    @Override
    public void setProperties(Properties properties) {
        Interceptor.super.setProperties(properties);
    }


}

4、MyBatisConfig配置拦截器

java 复制代码 
import com.xinjian.common.utils.StringUtils;
import com.xinjian.framework.interceptor.MybatisInterceptor;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.boot.autoconfigure.SpringBootVFS;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.util.ClassUtils;

import javax.sql.DataSource;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;

/**
 * Mybatis支持*匹配扫描包
 *
 * @author xinjian
 */
@Configuration
public class MyBatisConfig {
    static final String DEFAULT_RESOURCE_PATTERN = "**/*.class";
    @Autowired
    private Environment env;
    @Autowired
    private MybatisInterceptor mybatisInterceptor;
    public static String setTypeAliasesPackage(String typeAliasesPackage) {
        ResourcePatternResolver resolver = (ResourcePatternResolver) new PathMatchingResourcePatternResolver();
        MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory(resolver);
        List<String> allResult = new ArrayList<String>();
        try {
            for (String aliasesPackage : typeAliasesPackage.split(",")) {
                List<String> result = new ArrayList<String>();
                aliasesPackage = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
                    + ClassUtils.convertClassNameToResourcePath(aliasesPackage.trim()) + "/" + DEFAULT_RESOURCE_PATTERN;
                Resource[] resources = resolver.getResources(aliasesPackage);
                if (resources != null && resources.length > 0) {
                    MetadataReader metadataReader = null;
                    for (Resource resource : resources) {
                        if (resource.isReadable()) {
                            metadataReader = metadataReaderFactory.getMetadataReader(resource);
                            try {
                                result.add(Class.forName(metadataReader.getClassMetadata().getClassName()).getPackage().getName());
                            } catch (ClassNotFoundException e) {
                                e.printStackTrace();
                            }
                        }
                    }
                }
                if (result.size() > 0) {
                    HashSet<String> hashResult = new HashSet<String>(result);
                    allResult.addAll(hashResult);
                }
            }
            if (allResult.size() > 0) {
                typeAliasesPackage = String.join(",", (String[]) allResult.toArray(new String[0]));
            } else {
                throw new RuntimeException("mybatis typeAliasesPackage 路径扫描错误,参数typeAliasesPackage:" + typeAliasesPackage + "未找到任何包");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return typeAliasesPackage;
    }

    public Resource[] resolveMapperLocations(String[] mapperLocations) {
        ResourcePatternResolver resourceResolver = new PathMatchingResourcePatternResolver();
        List<Resource> resources = new ArrayList<Resource>();
        if (mapperLocations != null) {
            for (String mapperLocation : mapperLocations) {
                try {
                    Resource[] mappers = resourceResolver.getResources(mapperLocation);
                    resources.addAll(Arrays.asList(mappers));
                } catch (IOException e) {
                    // ignore
                }
            }
        }
        return resources.toArray(new Resource[resources.size()]);
    }

    @Bean
    public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {
        String typeAliasesPackage = env.getProperty("mybatis.typeAliasesPackage");
        String mapperLocations = env.getProperty("mybatis.mapperLocations");
        String configLocation = env.getProperty("mybatis.configLocation");
        typeAliasesPackage = setTypeAliasesPackage(typeAliasesPackage);
        VFS.addImplClass(SpringBootVFS.class);

        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        sessionFactory.setTypeAliasesPackage(typeAliasesPackage);
        sessionFactory.setMapperLocations(resolveMapperLocations(StringUtils.split(mapperLocations, ",")));
        sessionFactory.setConfigLocation(new DefaultResourceLoader().getResource(configLocation));
        sessionFactory.setPlugins(mybatisInterceptor);
        return sessionFactory.getObject();
    }
}

5、加解密类添加注解

java 复制代码 
import com.xinjian.common.annotation.Excel;
import com.xinjian.common.annotation.Excel.ColumnType;
import com.xinjian.common.annotation.Excel.Type;
import com.xinjian.common.annotation.Excels;
import com.xinjian.common.core.domain.BaseEntity;
import com.xinjian.common.encrypt.EncryptField;
import com.xinjian.common.encrypt.SensitiveClass;
import com.xinjian.common.xss.Xss;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import javax.validation.constraints.Email;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.Size;
import java.util.Date;
import java.util.List;

/**
 * 用户对象 sys_user
 *
 * @author xinjian
 */
@SensitiveClass
public class SysUser extends BaseEntity {
    private static final long serialVersionUID = 1L;

    /**
     * 用户ID
     */
    @Excel(name = "用户序号", cellType = ColumnType.NUMERIC, prompt = "用户编号")
    private Long userId;

    /**
     * 部门ID
     */
    @Excel(name = "部门编号", type = Type.IMPORT)
    private Long deptId;

    /**
     * 微信用户ID
     */
    private String openid;

    /**
     * 用户账号
     */
    @Excel(name = "登录名称")
    private String userName;

    /**
     * 用户昵称
     */
    @Excel(name = "用户名称")
    private String nickName;

    /**
     * 用户邮箱
     */
    @Excel(name = "用户邮箱")
    private String email;

    /**
     * 手机号码
     */
    @Excel(name = "手机号码")
    @EncryptField
    private String phonenumber;

    /**
     * 用户性别
     */
    @Excel(name = "用户性别", readConverterExp = "0=男,1=女,2=未知")
    private String sex;

    /**
     * 用户头像
     */
    private String avatar;

    /**
     * 密码
     */
    private String password;

    /**
     * 帐号状态（0正常 1停用）
     */
    @Excel(name = "帐号状态", readConverterExp = "0=正常,1=停用")
    private String status;

    /**
     * 删除标志（0代表存在 2代表删除）
     */
    private String delFlag;

    /**
     * 最后登录IP
     */
    @Excel(name = "最后登录IP", type = Type.EXPORT)
    private String loginIp;

    /**
     * 最后登录时间
     */
    @Excel(name = "最后登录时间", width = 30, dateFormat = "yyyy-MM-dd HH:mm:ss", type = Type.EXPORT)
    private Date loginDate;

    /**
     * 部门对象
     */
    @Excels({
        @Excel(name = "部门名称", targetAttr = "deptName", type = Type.EXPORT),
        @Excel(name = "部门负责人", targetAttr = "leader", type = Type.EXPORT)
    })
    private SysDept dept;

    /**
     * 角色对象
     */
    private List<SysRole> roles;

    /**
     * 角色组
     */
    private Long[] roleIds;

    /**
     * 岗位组
     */
    private Long[] postIds;

    /**
     * 角色ID
     */
    private Long roleId;

    public SysUser() {

    }

    public SysUser(Long userId) {
        this.userId = userId;
    }

    public static boolean isAdmin(Long userId) {
        return userId != null && 1L == userId;
    }

    public Long getUserId() {
        return userId;
    }

    public void setUserId(Long userId) {
        this.userId = userId;
    }

    public String getOpenid() {
        return openid;
    }

    public void setOpenid(String openid) {
        this.openid = openid;
    }

    public boolean isAdmin() {
        return isAdmin(this.userId);
    }

    public Long getDeptId() {
        return deptId;
    }

    public void setDeptId(Long deptId) {
        this.deptId = deptId;
    }

    @Xss(message = "用户昵称不能包含脚本字符")
    @Size(min = 0, max = 30, message = "用户昵称长度不能超过30个字符")
    public String getNickName() {
        return nickName;
    }

    public void setNickName(String nickName) {
        this.nickName = nickName;
    }

    @Xss(message = "用户账号不能包含脚本字符")
    @NotBlank(message = "用户账号不能为空")
    @Size(min = 0, max = 30, message = "用户账号长度不能超过30个字符")
    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    @Email(message = "邮箱格式不正确")
    @Size(min = 0, max = 50, message = "邮箱长度不能超过50个字符")
    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    @Size(min = 0, max = 11, message = "手机号码长度不能超过11个字符")
    public String getPhonenumber() {
        return phonenumber;
    }

    public void setPhonenumber(String phonenumber) {
        this.phonenumber = phonenumber;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getAvatar() {
        return avatar;
    }

    public void setAvatar(String avatar) {
        this.avatar = avatar;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getDelFlag() {
        return delFlag;
    }

    public void setDelFlag(String delFlag) {
        this.delFlag = delFlag;
    }

    public String getLoginIp() {
        return loginIp;
    }

    public void setLoginIp(String loginIp) {
        this.loginIp = loginIp;
    }

    public Date getLoginDate() {
        return loginDate;
    }

    public void setLoginDate(Date loginDate) {
        this.loginDate = loginDate;
    }

    public SysDept getDept() {
        return dept;
    }

    public void setDept(SysDept dept) {
        this.dept = dept;
    }

    public List<SysRole> getRoles() {
        return roles;
    }

    public void setRoles(List<SysRole> roles) {
        this.roles = roles;
    }

    public Long[] getRoleIds() {
        return roleIds;
    }

    public void setRoleIds(Long[] roleIds) {
        this.roleIds = roleIds;
    }

    public Long[] getPostIds() {
        return postIds;
    }

    public void setPostIds(Long[] postIds) {
        this.postIds = postIds;
    }

    public Long getRoleId() {
        return roleId;
    }

    public void setRoleId(Long roleId) {
        this.roleId = roleId;
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE)
            .append("userId", getUserId())
            .append("deptId", getDeptId())
            .append("userName", getUserName())
            .append("nickName", getNickName())
            .append("email", getEmail())
            .append("phonenumber", getPhonenumber())
            .append("sex", getSex())
            .append("avatar", getAvatar())
            .append("password", getPassword())
            .append("status", getStatus())
            .append("delFlag", getDelFlag())
            .append("loginIp", getLoginIp())
            .append("loginDate", getLoginDate())
            .append("createBy", getCreateBy())
            .append("createTime", getCreateTime())
            .append("updateBy", getUpdateBy())
            .append("updateTime", getUpdateTime())
            .append("remark", getRemark())
            .append("dept", getDept())
            .toString();
    }
}

6、实现效果

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