数据库sql查询支持上下文变量

This commit is contained in:
liangdaliang
2025-06-16 17:04:18 +08:00
parent 0f25043d8c
commit efa41a7217
3 changed files with 37 additions and 3 deletions

View File

@@ -5,6 +5,8 @@ import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author liangdaliang
@@ -66,6 +68,32 @@ public class MySQLExecutor {
return result;
}
public static String replaceSqlVariables(String sql, Map<String, String> params) {
if (sql == null || params == null) {
return sql;
}
// 正则匹配 ${variable_name}
Pattern pattern = Pattern.compile("\\$\\{([^}]*)\\}");
Matcher matcher = pattern.matcher(sql);
StringBuilder sb = new StringBuilder();
while (matcher.find()) {
String key = matcher.group(1).trim(); // 获取变量名
String replacement = params.get(key); // 从 map 中获取对应值
if (replacement != null) {
// 如果值存在,替换并加上单引号(适用于字符串)
// 如果你需要支持数字不加引号,请自行判断类型
replacement = "'" + replacement.replace("'", "''") + "'";
matcher.appendReplacement(sb, replacement);
}
}
matcher.appendTail(sb);
return sb.toString();
}
// public static void main(String[] args) {
// String url = "jdbc:mysql://47.103.142.5:3306/cmcf-test";
// List<String> columnNameList = new ArrayList<>();