fix code

hutool-db/src/main/java/cn/hutool/db/AbstractDb.java

@@ -498,13 +498,7 @@ public abstract class AbstractDb<R extends AbstractDb<R>> extends DefaultConnect
 	 * @throws DbRuntimeException SQL执行异常
 	 */
 	public <T> T find(final Collection<String> fields, final Entity where, final RsHandler<T> rsh) throws DbRuntimeException {
-		Connection conn = null;
-		try {
-			conn = this.getConnection();
-			return runner.find(conn, Query.of(where).setFields(fields), rsh);
-		} finally {
-			this.closeConnection(conn);
-		}
+		return find(Query.of(where).setFields(fields), rsh);
 	}
 
 	/**

hutool-db/src/main/java/cn/hutool/db/DefaultConnectionHolder.java

@@ -13,7 +13,12 @@ public class DefaultConnectionHolder implements ConnectionHolder {
 
 	protected final DataSource ds;
 
-	public DefaultConnectionHolder(DataSource ds) {
+	/**
+	 * 构造
+	 *
+	 * @param ds {@link DataSource}
+	 */
+	public DefaultConnectionHolder(final DataSource ds) {
 		this.ds = ds;
 	}
 

hutool-db/src/main/java/cn/hutool/db/StatementUtil.java

@@ -118,7 +118,7 @@ public class StatementUtil {
 	 *
 	 * @param conn   数据库连接
 	 * @param sql    SQL语句，使用"?"做为占位符
-	 * @param params "?"对应参数列表
+	 * @param params "?"对应参数列表或者Map表示命名参数
 	 * @return {@link PreparedStatement}
 	 * @throws SQLException SQL异常
 	 * @since 3.2.3

hutool-db/src/main/java/cn/hutool/db/sql/SqlBuilder.java

@@ -115,9 +115,18 @@ public class SqlBuilder implements Builder<String> {
 	private QuoteWrapper quoteWrapper;
 
 	// --------------------------------------------------------------- Constructor start
+
+	/**
+	 * 构造
+	 */
 	public SqlBuilder() {
 	}
 
+	/**
+	 * 构造
+	 *
+	 * @param quoteWrapper 包装器
+	 */
 	public SqlBuilder(final QuoteWrapper quoteWrapper) {
 		this.quoteWrapper = quoteWrapper;
 	}