java通过SQLUtils解析sql语句表明或表别名

是可以的。使用SQLUtils解析SQL语句后，可以通过遍历解析后的语法树，获取SQL语句中的表名或表别名信息。具体的实现方式可以参考以下代码示例：

import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.SQLName;
import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
import com.alibaba.druid.sql.ast.statement.SQLSelect;
import com.alibaba.druid.sql.ast.statement.SQLSelectQuery;
import com.alibaba.druid.sql.ast.statement.SQLSubqueryTableSource;
import com.alibaba.druid.sql.ast.statement.SQLTableSource;
import com.alibaba.druid.sql.ast.statement.SQLJoinTableSource;
import com.alibaba.druid.sql.ast.statement.SQLJoinTableSource.JoinType;

public class SQLParser {
    public static void main(String[] args) {
        String sql = "SELECT a.id, b.name FROM table_a a join table_b b on a.id = b.id where a.id = 1";
        SQLSelect sqlSelect = (SQLSelect) SQLUtils.parseSingleStatement(sql);
        SQLSelectQuery sqlSelectQuery = sqlSelect.getQuery();
        SQLTableSource sqlTableSource = sqlSelectQuery.getFrom();

        parseTableSource(sqlTableSource);
    }

    private static void parseTableSource(SQLTableSource sqlTableSource) {
        if (sqlTableSource instanceof SQLJoinTableSource) {
            SQLJoinTableSource joinTableSource = (SQLJoinTableSource) sqlTableSource;
            parseTableSource(joinTableSource.getLeft());
            parseTableSource(joinTableSource.getRight());
        } else if (sqlTableSource instanceof SQLSubqueryTableSource) {
            SQLSubqueryTableSource subqueryTableSource = (SQLSubqueryTableSource) sqlTableSource;
            parseTableSource(subqueryTableSource.getSelect().getQuery().getFrom());
        } else {
            SQLExpr sqlExpr = sqlTableSource.getExpr();
            if (sqlExpr instanceof SQLName) {
                SQLName sqlName = (SQLName) sqlExpr;
                String tableName = sqlName.getSimpleName();
                String tableAlias = sqlTableSource.getAlias();
                System.out.println("Table name: " + tableName + ", alias: " + tableAlias);
            } else if (sqlExpr instanceof SQLIdentifierExpr) {
                SQLIdentifierExpr sqlIdentifierExpr = (SQLIdentifierExpr) sqlExpr;
                String tableName = sqlIdentifierExpr.getName();
                String tableAlias = sqlTableSource.getAlias();
                System.out.println("Table name: " + tableName + ", alias: " + tableAlias);
            }
        }
    }
}

在上述代码中，我们首先使用SQLUtils解析SQL语句，并获取SQL语句中的表源信息。然后，我们通过遍历表源信息的语法树，逐一获取表名和表别名信息。对于多表连接查询和子查询的情况，我们通过递归的方式进行处理。