From 4484acb56810d06ef5c2f78190a93688a61f83a7 Mon Sep 17 00:00:00 2001
From: chenjiahe <763432473@qq.com>
Date: 星期二, 28 六月 2022 16:16:48 +0800
Subject: [PATCH] 修改包名称

---
 src/main/java/com/hx/mybatis/aes/springbean/SqlUtils.java |   75 +++++++++++++++++++++++++++++++++----
 1 files changed, 67 insertions(+), 8 deletions(-)

diff --git a/src/main/java/com/hx/mybatis/aes/springbean/SqlUtils.java b/src/main/java/com/hx/mybatis/aes/springbean/SqlUtils.java
index 015815f..8d978db 100644
--- a/src/main/java/com/hx/mybatis/aes/springbean/SqlUtils.java
+++ b/src/main/java/com/hx/mybatis/aes/springbean/SqlUtils.java
@@ -2,7 +2,6 @@
 
 import com.alibaba.druid.sql.SQLUtils;
 import com.alibaba.druid.sql.ast.SQLExpr;
-import com.alibaba.druid.sql.ast.SQLObject;
 import com.alibaba.druid.sql.ast.SQLStatement;
 import com.alibaba.druid.sql.ast.statement.*;
 import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlDeleteStatement;
@@ -18,7 +17,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
@@ -32,7 +30,7 @@
     private static Logger logger = LoggerFactory.getLogger(SqlUtils.class.getName());
 
 
-    /**鏌ヨ鍔犲瘑鏁版嵁澶勭悊锛屽彧瀵规煡璇㈠仛澶勭悊锛宻elect杩斿洖涓嶅仛澶勭悊
+    /**鏌ヨ鍔犲瘑鏁版嵁澶勭悊锛屽彧瀵规煡璇㈠仛澶勭悊
      * @param sql sql璇彞
      * @param aesKeysTable aes绉橀挜
      * @return
@@ -41,10 +39,72 @@
 
         MySqlStatementParser parser = new MySqlStatementParser(sql);
         SQLSelectStatement sqlStatement = (SQLSelectStatement) parser.parseSelect();
-        //鑾峰彇鏍煎紡鍖栫殑slq璇彞
-        sql = sqlStatement.toString();
+
+        SQLSelect sqlSelect = sqlStatement.getSelect();
+        if (sqlSelect.getQuery() instanceof SQLSelectQueryBlock) {
+            // 闈瀠nion鐨勬煡璇㈣鍙�
+            return selectSqlRoutine( sqlStatement,aesKeysTable);
+        } else if (sqlSelect.getQuery() instanceof SQLUnionQuery) {
+            // union鐨勬煡璇㈣鍙�
+            return selectSqlUnion( sql, sqlStatement, aesKeysTable);
+        }else {
+            return selectSqlRoutine( sqlStatement,aesKeysTable);
+        }
+    }
+
+    /**鏌ヨ鍔犲瘑鏁版嵁澶勭悊锛屽彧瀵规煡璇㈠仛澶勭悊锛宻elect杩斿洖涓嶅仛澶勭悊锛圲nion鐗规畩璇彞锛�
+     * @param sql sql璇彞
+     * @param aesKeysTable aes绉橀挜
+     * @return
+     */
+    public static String selectSqlUnion(String sql,SQLSelectStatement sqlStatement,Map<String,Map<String,String>> aesKeysTable){
+
+        //鑾峰彇琛ㄥ拰鍒悕
+        ExportTableAliasVisitor visitorTable = new ExportTableAliasVisitor();
+        sqlStatement.accept(visitorTable);
+        Map<String,String> tableMaps = visitorTable.getTableMap();
+
+        //鑾峰彇鎵�鏈夌殑瀛楁
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        sqlStatement.accept(visitor);
+        //閬嶅巻鎵�鏈夊瓧娈�
+        Collection<TableStat.Column> columns= visitor.getColumns();
+
+        //澶勭悊闇�瑕佸姞瀵嗗緱瀛楁
+
+        if(!StringUtils.isEmpty(sql)){
+            Map<String,String> aesKeys = null;
+            String aeskey = null;
+            //鎶婂墿涓嬬殑鎷兼帴涓婃潵
+            String tableAl = null;
+            for(TableStat.Column column:columns){
+                aesKeys= aesKeysTable.get(column.getTable());
+                if(aesKeys == null){
+                    continue;
+                }
+                aeskey = aesKeys.getOrDefault(column.getName(),null);
+                if(StringUtils.isEmpty(aeskey)){
+                    continue;
+                }
+                tableAl = tableMaps.get(column.getTable());
+                if(!StringUtils.isEmpty(tableAl)){
+                    tableAl = tableAl+"."+column.getName();
+                }else{
+                    tableAl = column.getName();
+                }
+                sql = sql.replaceAll("((?<!\\.)\\b"+tableAl+"\\b(?!\\.))","AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"')");
+            }
+        }
+        return sql;
+    }
 
 
+    /**鏌ヨ鍔犲瘑鏁版嵁澶勭悊锛屽彧瀵规煡璇㈠仛澶勭悊锛宻elect杩斿洖涓嶅仛澶勭悊锛堝父瑙勮鍙ワ級
+     * @param sqlStatement sql璇彞
+     * @param aesKeysTable aes绉橀挜
+     * @return
+     */
+    public static String selectSqlRoutine(SQLSelectStatement sqlStatement,Map<String,Map<String,String>> aesKeysTable){
 
         //瑙f瀽select鏌ヨ
         //SQLSelect sqlSelect = sqlStatement.getSelect()
@@ -55,9 +115,8 @@
             sqlSelectQuery = (SQLSelectQueryBlock)sqlStatement.getSelect().getQuery() ;
         }catch (Exception e){
             b = false;
-            logger.error("瑙f瀽sql鎶ラ敊锛�",e.getMessage());
+            logger.error("瑙f瀽sql鎶ラ敊锛�"+e.getMessage());
         }
-
         if(!b){
             return "err";
         }
@@ -136,7 +195,7 @@
         }
 
         //澶勭悊where闇�瑕佸姞瀵嗗緱瀛楁
-        sql = sqlWhere.toString();
+        String sql = sqlWhere.toString();
         if(!StringUtils.isEmpty(sql)){
             Map<String,String> aesKeys = null;
             String aeskey = null;

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