add test

hutool-core/src/main/java/cn/hutool/core/net/url/UrlQuery.java

@@ -279,6 +279,12 @@ public class UrlQuery {
 		return sb.toString();
 	}
 
+	/**
+	 * 生成查询字符串，类似于aaa=111&bbb=222<br>
+	 * 此方法不对任何特殊字符编码，仅用于输出显示
+	 *
+	 * @return 查询字符串
+	 */
 	@Override
 	public String toString() {
 		return build(null);

hutool-core/src/test/java/cn/hutool/core/net/UrlQueryTest.java

@@ -137,4 +137,11 @@ public class UrlQueryTest {
 		final UrlQuery query = UrlQuery.of(queryStr, null);
 		Assert.assertEquals(queryStr, query.toString());
 	}
+
+	@Test
+	public void parsePercentTest2(){
+		String queryStr = "signature=%2Br1ekUCGjXiu50Y%2Bk0MO4ovulK8%3D";
+		final UrlQuery query = UrlQuery.of(queryStr, null);
+		Assert.assertEquals(queryStr, query.toString());
+	}
 }