当Put和Post请求的请求主体为空时，MockMvc失败

import org.junit.jupiter.api.Test;
import org.springframework.http.MediaType;
import import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

class MyControllerTest {

    private MockMvc mockMvc;

    @BeforeEach
    void setUp() {
        mockMvc = MockMvcBuilders.standaloneSetup(new MyController()).build();
    }

    @Test
    void testPutRequestWithEmptyBody() throws Exception {
        mockMvc.perform(MockMvcRequestBuilders.put("/api/myendpoint")
                .contentType(MediaType.APPLICATION_JSON)
                .content("{}"))
                .andExpect(MockMvcResultMatchers.status().isOk());
    }

    @Test
    void testPostRequestWithEmptyBody() throws Exception {
        mockMvc.perform(MockMvcRequestBuilders.post("/api/myendpoint")
                .contentType(MediaType.APPLICATION_JSON)
                .content("{}"))
                .andExpect(MockMvcResultMatchers.status().isOk());
    }
}