add 增加 DataBaseHelper 数据库助手 用于屏蔽多类型数据库sql语句差异

ruoyi-common/src/main/java/com/ruoyi/common/enums/DataBaseType.java

@@ -0,0 +1,49 @@
+package com.ruoyi.common.enums;
+
+import com.ruoyi.common.utils.StringUtils;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+/**
+ * 数据库类型
+ *
+ * @author Lion Li
+ */
+@Getter
+@AllArgsConstructor
+public enum DataBaseType {
+
+    /**
+     * MySQL
+     */
+    MY_SQL("MySQL"),
+
+    /**
+     * Oracle
+     */
+    ORACLE("Oracle"),
+
+    /**
+     * PostgreSQL
+     */
+    POSTGRE_SQL("PostgreSQL"),
+
+    /**
+     * SQL Server
+     */
+    SQL_SERVER("Microsoft SQL Server");
+
+    private final String type;
+
+    public static DataBaseType find(String databaseProductName) {
+        if (StringUtils.isBlank(databaseProductName)) {
+            return null;
+        }
+        for (DataBaseType type : values()) {
+            if (type.getType().equals(databaseProductName)) {
+                return type;
+            }
+        }
+        return null;
+    }
+}

ruoyi-common/src/main/java/com/ruoyi/common/helper/DataBaseHelper.java

@@ -0,0 +1,61 @@
+package com.ruoyi.common.helper;
+
+import cn.hutool.core.convert.Convert;
+import com.baomidou.dynamic.datasource.DynamicRoutingDataSource;
+import com.ruoyi.common.enums.DataBaseType;
+import com.ruoyi.common.exception.ServiceException;
+import com.ruoyi.common.utils.spring.SpringUtils;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+import javax.sql.DataSource;
+import java.sql.DatabaseMetaData;
+import java.sql.SQLException;
+
+/**
+ * 数据库助手
+ *
+ * @author Lion Li
+ */
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class DataBaseHelper {
+
+    /**
+     * 获取当前数据库类型
+     */
+    public static DataBaseType getDataBasyType() {
+        DynamicRoutingDataSource ds = (DynamicRoutingDataSource) SpringUtils.getBean(DataSource.class);
+        DataSource dataSource = ds.determineDataSource();
+        try {
+            DatabaseMetaData metaData = dataSource.getConnection().getMetaData();
+            String databaseProductName = metaData.getDatabaseProductName();
+            return DataBaseType.find(databaseProductName);
+        } catch (SQLException e) {
+            throw new ServiceException(e.getMessage());
+        }
+    }
+
+    public static boolean isMySql() {
+        return DataBaseType.MY_SQL == getDataBasyType();
+    }
+
+    public static boolean isOracle() {
+        return DataBaseType.ORACLE == getDataBasyType();
+    }
+
+    public static boolean isPostgerSql() {
+        return DataBaseType.POSTGRE_SQL == getDataBasyType();
+    }
+
+    public static boolean isSqlServer() {
+        return DataBaseType.SQL_SERVER == getDataBasyType();
+    }
+
+    public static String findInSet(Object var1, String var2) {
+        DataBaseType dataBasyType = getDataBasyType();
+        if (dataBasyType == DataBaseType.SQL_SERVER) {
+            return "charindex(" + Convert.toStr(var1) + ", " + var2 + ") <> 0";
+        }
+        return "find_in_set(" + Convert.toStr(var1) + ", " + var2 + ") <> 0";
+    }
+}