增加CsvWriteConfig.setEndingLineBreak配置项

hutool-core/src/main/java/cn/hutool/core/text/csv/CsvWriteConfig.java

@@ -21,6 +21,12 @@ public class CsvWriteConfig extends CsvConfig<CsvWriteConfig> implements Seriali
 	 */
 	protected char[] lineDelimiter = {CharUtil.CR, CharUtil.LF};
 
+	/**
+	 * 文件末尾是否添加换行符<br>
+	 * 按照https://datatracker.ietf.org/doc/html/rfc4180#section-2 规范，末尾换行符可有可无。
+	 */
+	protected boolean endingLineBreak;
+
 	/**
 	 * 默认配置
 	 *
@@ -51,4 +57,16 @@ public class CsvWriteConfig extends CsvConfig<CsvWriteConfig> implements Seriali
 		this.lineDelimiter = lineDelimiter;
 		return this;
 	}
+
+	/**
+	 * 文件末尾是否添加换行符<br>
+	 * 按照https://datatracker.ietf.org/doc/html/rfc4180#section-2 规范，末尾换行符可有可无。
+	 *
+	 * @param endingLineBreak 文件末尾是否添加换行符
+	 * @return this
+	 */
+	public CsvWriteConfig setEndingLineBreak(boolean endingLineBreak) {
+		this.endingLineBreak = endingLineBreak;
+		return this;
+	}
 }

hutool-core/src/main/java/cn/hutool/core/text/csv/CsvWriter.java

@@ -334,8 +334,13 @@ public final class CsvWriter implements Closeable, Flushable, Serializable {
 		return this;
 	}
 
+	@SuppressWarnings("resource")
 	@Override
 	public void close() {
+		if(this.config.endingLineBreak){
+			//https://gitee.com/dromara/hutool/issues/I75K5G
+			writeLine();
+		}
 		IoUtil.close(this.writer);
 	}