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dble reports syntax error when sql contains chinese symbol ， #3899

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dble reports syntax error when sql contains chinese symbol ， #3899

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14 changes: 14 additions & 0 deletions src/main/java/com/actiontech/dble/route/impl/DefaultRouteStrategy.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@

import java.sql.SQLException;
import java.sql.SQLSyntaxErrorException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class DefaultRouteStrategy extends AbstractRouteStrategy {

Expand All @@ -41,6 +43,18 @@ protected RouteResultset routeNormalSqlWithAST(SchemaConfig schema,
}

private SQLStatement parserSQL(String originSql, ServerConnection c) throws SQLSyntaxErrorException {

// 提取 SELECT 和 FROM 之间的字段部分（忽略大小写）
Pattern pattern = Pattern.compile("(?i)SELECT\\s+(.*?)\\s+FROM", Pattern.DOTALL);
Matcher matcher = pattern.matcher(originSql);
if (matcher.find()) {
String selectList = matcher.group(1);
// 仅检查字段列表中的逗号
if (Pattern.compile("[，\\uFF0C]").matcher(selectList).find()) {
throw new SQLSyntaxErrorException("invalid chinese symbol ，");
}
}

SQLStatementParser parser = new MySqlStatementParser(originSql);
try {
return parser.parseStatement(true);
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