以sundb8为例

目录

问题描述

错误信息

解决方案

1、mybatis-plus-annotation-3.5.3.2.jar

2、mybatis-plus-extension-3.5.3.2.jar

2.1增加类

2.1.1SUNDBKeyGenerator

2.1.2SUNDBDialect

2.2修改类

2.2.1DialectFactory

2.2.2JdbcUtils

---

问题描述

  Mybatis-Plus不支持国产数据库

错误信息

Mybatis Plus Cannot Read Database type or The Database's Not Supported! The Database's IDialect Not Supported!

解决方案

需要将mybatis-plus依赖包中的相关类反编译后替换

1、mybatis-plus-annotation-3.5.3.2.jar

包名：com.baomidou.mybatisplus.annotation

类名：DbType

修改为：

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//
package com.baomidou.mybatisplus.annotation;
public enum DbType {
    MYSQL("mysql", "MySql数据库"),
    MARIADB("mariadb", "MariaDB数据库"),
    ORACLE("oracle", "Oracle11g及以下数据库(高版本推荐使用ORACLE_NEW)"),
    ORACLE_12C("oracle12c", "Oracle12c+数据库"),
    DB2("db2", "DB2数据库"),
    H2("h2", "H2数据库"),
    HSQL("hsql", "HSQL数据库"),
    SQLITE("sqlite", "SQLite数据库"),
    POSTGRE_SQL("postgresql", "Postgre数据库"),
    SQL_SERVER2005("sqlserver2005", "SQLServer2005数据库"),
    SQL_SERVER("sqlserver", "SQLServer数据库"),
    DM("dm", "达梦数据库"),
    XU_GU("xugu", "虚谷数据库"),
    KINGBASE_ES("kingbasees", "人大金仓数据库"),
    PHOENIX("phoenix", "Phoenix HBase数据库"),
    GAUSS("zenith", "Gauss 数据库"),
    CLICK_HOUSE("clickhouse", "clickhouse 数据库"),
    GBASE("gbase", "南大通用(华库)数据库"),
    GBASE_8S("gbase-8s", "南大通用数据库 GBase 8s"),
    /** @deprecated */
    @Deprecated
    GBASEDBT("gbasedbt", "南大通用数据库"),
    /** @deprecated */
    @Deprecated
    GBASE_INFORMIX("gbase 8s", "南大通用数据库 GBase 8s"),
    SINODB("sinodb", "星瑞格数据库"),
    OSCAR("oscar", "神通数据库"),
    SYBASE("sybase", "Sybase ASE 数据库"),
    OCEAN_BASE("oceanbase", "OceanBase 数据库"),
    FIREBIRD("Firebird", "Firebird 数据库"),
    HIGH_GO("highgo", "瀚高数据库"),
    CUBRID("cubrid", "CUBRID数据库"),
    GOLDILOCKS("goldilocks", "GOLDILOCKS数据库"),
    CSIIDB("csiidb", "CSIIDB数据库"),
    SAP_HANA("hana", "SAP_HANA数据库"),
    IMPALA("impala", "impala数据库"),
    VERTICA("vertica", "vertica数据库"),
    XCloud("xcloud", "行云数据库"),
    REDSHIFT("redshift", "亚马逊redshift数据库"),
    OPENGAUSS("openGauss", "华为 opengauss 数据库"),
    TDENGINE("TDengine", "TDengine数据库"),
    INFORMIX("informix", "Informix数据库"),
    UXDB("uxdb", "优炫数据库"),
    LEALONE("lealone", "Lealone数据库"),
    SUNDB("SUNDB","SUNDB数据库"),
    OTHER("other", "其他数据库");
    private final String db;
    private final String desc;
    public static DbType getDbType(String dbType) {
        DbType[] var1 = values();
        int var2 = var1.length;
        for(int var3 = 0; var3 < var2; ++var3) {
            DbType type = var1[var3];
            if (type.db.equalsIgnoreCase(dbType)) {
                return type;
            }
        }
        return OTHER;
    }
    public String getDb() {
        return this.db;
    }
    public String getDesc() {
        return this.desc;
    }
    private DbType(final String db, final String desc) {
        this.db = db;
        this.desc = desc;
    }
}

2、mybatis-plus-extension-3.5.3.2.jar

2.1增加类

2.1.1SUNDBKeyGenerator

包名：com.baomidou.mybatisplus.extension.incrementer

类名：SUNDBKeyGenerator

package com.baomidou.mybatisplus.extension.incrementer;
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.incrementer.IKeyGenerator;
/**
 * @version V1.0
 * @Description: (用一句话描述该文件做什么)
 * @author: qixiongfei
 * @date: 2024/5/21 16:50
 */
public class SUNDBKeyGenerator implements IKeyGenerator {
    public SUNDBKeyGenerator() {
    }
    public String executeSql(String incrementerName) {
        return "SELECT " + incrementerName + ".NEXTVAL FROM DUAL";
    }
    public DbType dbType() {
        return DbType.SUNDB;
    }
}

2.1.2SUNDBDialect

包名：com.baomidou.mybatisplus.extension.plugins.pagination.dialects

类名：SUNDBDialect

package com.baomidou.mybatisplus.extension.plugins.pagination.dialects;
/**
 * @version V1.0
 * @Description: (用一句话描述该文件做什么)
 * @author: qixiongfei
 * @date: 2024/5/21 16:43
 */
public class SUNDBDialect extends OracleDialect {
}

2.2修改类

2.2.1DialectFactory

包名：com.baomidou.mybatisplus.extension.plugins.pagination

类名：DialectFactory

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//
package com.baomidou.mybatisplus.extension.plugins.pagination;
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.toolkit.ExceptionUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.dialects.*;
import java.util.EnumMap;
import java.util.Map;
public class DialectFactory {
    private static final Map DIALECT_ENUM_MAP = new EnumMap(DbType.class);
    public DialectFactory() {
    }
    public static IDialect getDialect(DbType dbType) {
        IDialect dialect = (IDialect)DIALECT_ENUM_MAP.get(dbType);
        if (null == dialect) {
            if (dbType == DbType.OTHER) {
                throw ExceptionUtils.mpe("%s database not supported.", new Object[]{dbType.getDb()});
            }
            if (dbType != DbType.MYSQL && dbType != DbType.MARIADB && dbType != DbType.GBASE && dbType != DbType.OSCAR && dbType != DbType.XU_GU && dbType != DbType.CLICK_HOUSE && dbType != DbType.OCEAN_BASE && dbType != DbType.CUBRID && dbType != DbType.GOLDILOCKS && dbType != DbType.CSIIDB) {
                if (dbType != DbType.ORACLE && dbType != DbType.DM && dbType != DbType.GAUSS) {
                    if (dbType != DbType.POSTGRE_SQL && dbType != DbType.H2 && dbType != DbType.LEALONE && dbType != DbType.SQLITE && dbType != DbType.HSQL && dbType != DbType.KINGBASE_ES && dbType != DbType.PHOENIX && dbType != DbType.SAP_HANA && dbType != DbType.IMPALA && dbType != DbType.HIGH_GO && dbType != DbType.VERTICA && dbType != DbType.REDSHIFT && dbType != DbType.OPENGAUSS && dbType != DbType.TDENGINE && dbType != DbType.UXDB) {
                        if (dbType != DbType.ORACLE_12C && dbType != DbType.FIREBIRD && dbType != DbType.SQL_SERVER) {
                            if (dbType == DbType.DB2) {
                                dialect = new DB2Dialect();
                            } else if (dbType == DbType.SQL_SERVER2005) {
                                dialect = new SQLServer2005Dialect();
                            } else if (dbType == DbType.SYBASE) {
                                dialect = new SybaseDialect();
                            } else if (dbType == DbType.XCloud) {
                                dialect = new XCloudDialect();
                            } else if (dbType != DbType.GBASE_8S && dbType != DbType.GBASEDBT && dbType != DbType.GBASE_INFORMIX && dbType != DbType.SINODB) {
                                if (dbType == DbType.INFORMIX) {
                                    dialect = new InformixDialect();
                                }
                            } else {
                                dialect = new GBase8sDialect();
                            }
                        } else {
                            dialect = new Oracle12cDialect();
                        }
                    } else {
                        dialect = new PostgreDialect();
                    }
                } else {
                    dialect = new OracleDialect();
                }
            } else {
                dialect = new MySqlDialect();
            }
            if(dbType == DbType.SUNDB){
                dialect = new SUNDBDialect();
            }
            DIALECT_ENUM_MAP.put(dbType, dialect);
        }
        return (IDialect)dialect;
    }
}

2.2.2JdbcUtils

包名：com.baomidou.mybatisplus.extension.toolkit

类名：JdbcUtils

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//
package com.baomidou.mybatisplus.extension.toolkit;
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.toolkit.Assert;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.toolkit.ExceptionUtils;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Function;
import java.util.regex.Pattern;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
public class JdbcUtils {
    private static final Log logger = LogFactory.getLog(JdbcUtils.class);
    private static final Map JDBC_DB_TYPE_CACHE = new ConcurrentHashMap();
    public JdbcUtils() {
    }
    public static DbType getDbType(Executor executor) {
        try {
            Connection conn = executor.getTransaction().getConnection();
            return (DbType)CollectionUtils.computeIfAbsent(JDBC_DB_TYPE_CACHE, conn.getMetaData().getURL(), JdbcUtils::getDbType);
        } catch (SQLException var2) {
            throw ExceptionUtils.mpe(var2);
        }
    }
    public static DbType getDbType(String jdbcUrl) {
        Assert.isFalse(StringUtils.isBlank(jdbcUrl), "Error: The jdbcUrl is Null, Cannot read database type", new Object[0]);
        String url = jdbcUrl.toLowerCase();
        if (!url.contains(":mysql:") && !url.contains(":cobar:")) {
            if (url.contains(":mariadb:")) {
                return DbType.MARIADB;
            } else if (url.contains(":oracle:")) {
                return DbType.ORACLE;
            } else if (!url.contains(":sqlserver:") && !url.contains(":microsoft:")) {
                if (url.contains(":sqlserver2012:")) {
                    return DbType.SQL_SERVER;
                } else if (url.contains(":postgresql:")) {
                    return DbType.POSTGRE_SQL;
                } else if (url.contains(":hsqldb:")) {
                    return DbType.HSQL;
                } else if (url.contains(":db2:")) {
                    return DbType.DB2;
                } else if (url.contains(":sqlite:")) {
                    return DbType.SQLITE;
                } else if (url.contains(":h2:")) {
                    return DbType.H2;
                } else if (url.contains(":lealone:")) {
                    return DbType.LEALONE;
                } else if (regexFind(":dm\\d*:", url)) {
                    return DbType.DM;
                } else if (url.contains(":xugu:")) {
                    return DbType.XU_GU;
                } else if (regexFind(":kingbase\\d*:", url)) {
                    return DbType.KINGBASE_ES;
                } else if (url.contains(":phoenix:")) {
                    return DbType.PHOENIX;
                } else if (url.contains(":zenith:")) {
                    return DbType.GAUSS;
                } else if (url.contains(":gbase:")) {
                    return DbType.GBASE;
                } else if (!url.contains(":gbasedbt-sqli:") && !url.contains(":informix-sqli:")) {
                    if (!url.contains(":ch:") && !url.contains(":clickhouse:")) {
                        if (url.contains(":oscar:")) {
                            return DbType.OSCAR;
                        } else if (url.contains(":sybase:")) {
                            return DbType.SYBASE;
                        } else if (url.contains(":oceanbase:")) {
                            return DbType.OCEAN_BASE;
                        } else if (url.contains(":highgo:")) {
                            return DbType.HIGH_GO;
                        } else if (url.contains(":cubrid:")) {
                            return DbType.CUBRID;
                        } else if (url.contains(":goldilocks:")) {
                            return DbType.GOLDILOCKS;
                        } else if (url.contains(":csiidb:")) {
                            return DbType.CSIIDB;
                        } else if (url.contains(":sap:")) {
                            return DbType.SAP_HANA;
                        } else if (url.contains(":impala:")) {
                            return DbType.IMPALA;
                        } else if (url.contains(":vertica:")) {
                            return DbType.VERTICA;
                        } else if (url.contains(":xcloud:")) {
                            return DbType.XCloud;
                        } else if (url.contains(":firebirdsql:")) {
                            return DbType.FIREBIRD;
                        } else if (url.contains(":redshift:")) {
                            return DbType.REDSHIFT;
                        } else if (url.contains(":opengauss:")) {
                            return DbType.OPENGAUSS;
                        } else if (url.contains(":sundb:")) {
                            return DbType.SUNDB;
                        }  else if (!url.contains(":taos:") && !url.contains(":taos-rs:")) {
                            if (url.contains(":informix")) {
                                return DbType.INFORMIX;
                            } else if (url.contains(":sinodb")) {
                                return DbType.SINODB;
                            } else if (url.contains(":uxdb:")) {
                                return DbType.UXDB;
                            } else {
                                logger.warn("The jdbcUrl is " + jdbcUrl + ", Mybatis Plus Cannot Read Database type or The Database's Not Supported!");
                                return DbType.OTHER;
                            }
                        } else {
                            return DbType.TDENGINE;
                        }
                    } else {
                        return DbType.CLICK_HOUSE;
                    }
                } else {
                    return DbType.GBASE_8S;
                }
            } else {
                return DbType.SQL_SERVER2005;
            }
        } else {
            return DbType.MYSQL;
        }
    }
    public static boolean regexFind(String regex, CharSequence input) {
        return null == input ? false : Pattern.compile(regex).matcher(input).find();
    }
}