Mysql数据库AES加密工具

chenjiahe

2022-01-28 b1097dce55d857ae1ae63798911c1e7027c00de4

 src/main/java/com/hx/mybatis/aes/springbean/SqlUtils.java

@@ -2,6 +2,7 @@

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;
@@ -15,6 +16,7 @@
import com.alibaba.druid.util.JdbcUtils;
import com.hx.util.StringUtils;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
@@ -66,20 +68,22 @@
            if(sqlSelect.length() > 7){
                sqlSelect.append(",");
            }
            expr = sqlSelectItem.getExpr().toString();
            if(expr.indexOf("SELECT") == -1){

            out.delete(0, out.length()) ;
            sqlSelectItem.accept(sqlastOutputVisitor) ;
            expr = out.toString();
            sqlSelect.append(expr);

           /* if(expr.indexOf("SELECT") == -1){
                sqlSelect.append(expr);
                if(!StringUtils.isEmpty(sqlSelectItem.getAlias())){
                    sqlSelect.append(" AS "+sqlSelectItem.getAlias());
                }
            }else{
                sqlSelect.append("(");
                sqlSelect.append(selectSqlHandle(expr,aesKeysTable,tableMaps,columns));
                sqlSelect.append(")");
                if(!StringUtils.isEmpty(sqlSelectItem.getAlias())){
                //sqlSelect.append("(");
                sqlSelect.append(expr);
                //sqlSelect.append(")");
               *//* if(!StringUtils.isEmpty(sqlSelectItem.getAlias())){
                    sqlSelect.append(" AS "+sqlSelectItem.getAlias());
                }
            }
                }*//*
            }*/
        }

        //解析from
@@ -134,12 +138,20 @@
                }else{
                    tableAl = column.getName();
                }
                sql = sql.replaceAll("( |\\n|\\()"+tableAl+"( |\\n|\\))"," AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"') ");
                sql = sql.replaceAll("((?<!\\.)\\b"+tableAl+"\\b(?!\\.))","AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"')");
            }
        }
        return sqlSelect.toString()+sql;
    }

    /**
     * 处理select返回字段的参数
     * @param sql
     * @param aesKeysTable
     * @param tableMaps
     * @param columns
     * @return
     */
    public static String selectSqlHandle(String sql,Map<String,Map<String,String>> aesKeysTable
            ,Map<String,String> tableMaps,Collection<TableStat.Column> columns){

@@ -235,7 +247,7 @@
                }else{
                    tableAl = column.getName();
                }
                sql = sql.replaceAll("( |\\n|\\()"+tableAl+"( |\\n|\\))"," AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"') ");
                sql = sql.replaceAll("((?<!\\.)\\b"+tableAl+"\\b(?!\\.))","AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"')");
            }
        }
        return sqlSelect.toString()+sql;
@@ -399,7 +411,7 @@
                }else{
                    tableAl = column.getName();
                }
                sqlWhere = sqlWhere.replaceAll("( |\\n|\\()"+tableAl+"( |\\n|\\))"," AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"') ");
                sqlWhere = sqlWhere.replaceAll("((?<!\\.)\\b"+tableAl+"\\b(?!\\.))","AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"')");
            }

        }
@@ -477,7 +489,7 @@
                }else{
                    tableAl = column.getName();
                }
                sqlWhere = sqlWhere.replaceAll("( |\\n|\\()"+tableAl+"( |\\n|\\))"," AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"') ");
                sqlWhere = sqlWhere.replaceAll("((?<!\\.)\\b"+tableAl+"\\b(?!\\.))","AES_DECRYPT(UNHEX("+tableAl+"),'"+aeskey+"')");
            }

        }