如何使用mockmvc从嵌套异常中获取底层错误消息

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

@WebMvcTest(YourController.class)
public class YourControllerTest {

    @Autowired
    private MockMvc mockMvc;

    // 测试方法
}

@Test
public void testNestedException() throws Exception {
    MvcResult result = mockMvc.perform(MockMvcRequestBuilders.get("/your-endpoint"))
            .andExpect(MockMvcResultMatchers.status().isOk())
            .andReturn();

    // 从响应中获取异常信息
    Exception resolvedException = result.getResolvedException();
    if (resolvedException != null) {
        Throwable rootCause = getRootCause(resolvedException);
        String errorMessage = rootCause.getMessage();
        // 处理错误消息
    }
}

private Throwable getRootCause(Throwable throwable) {
    Throwable rootCause = throwable;
    while (rootCause.getCause() != null) {
        rootCause = rootCause.getCause();
    }
    return rootCause;
}