Spring Cloud Openfeign Ampersand does not encode in POST request.

Describe the bug Ampersand does not encode in POST request.

spring cloud openfeign version: 2.1.5.RELEASE openfeign-core version: 10.4.0 Sample

@FeignClient(name = "localapp")
public interface TestClient {

    @RequestMapping(method = RequestMethod.GET, value = "/hello")
    String getHello();

    @PostMapping(value = "/PostWithPostWithAmpersandWebClient")
    String getPassword(@RequestParam("userName") String userName,
                       @RequestParam("password") String password);

}
        @Test
    public void testPassword() {
        final String password = "!@#$%^&*()";

        String hello = this.testClient.getPassword("foo", password);
        assertThat(hello).isEqualTo("foo:" + password);
    }

expect !@#$%^&*() but !@#$%^