refactor(api): 统一 HTTP 200 响应契约

common-web/src/test/java/com/baiyue/common/web/CommonWebAutoConfigurationTest.java

@@ -0,0 +1,31 @@
+package com.baiyue.common.web;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class CommonWebAutoConfigurationTest {
+
+    private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+            .withConfiguration(AutoConfigurations.of(CommonWebAutoConfiguration.class));
+
+    @Test
+    void registersExceptionHandlerAndCorrelationFilterOutsideComponentScan() {
+        contextRunner.run(context -> {
+            assertThat(context).hasSingleBean(GlobalExceptionHandler.class);
+            assertThat(context).hasSingleBean(CorrelationIdFilter.class);
+        });
+    }
+
+    @Test
+    void backsOffWhenApplicationProvidesItsOwnBeans() {
+        contextRunner.withBean(GlobalExceptionHandler.class, GlobalExceptionHandler::new)
+                .withBean(CorrelationIdFilter.class, CorrelationIdFilter::new)
+                .run(context -> {
+                    assertThat(context).hasSingleBean(GlobalExceptionHandler.class);
+                    assertThat(context).hasSingleBean(CorrelationIdFilter.class);
+                });
+    }
+}

common-web/src/test/java/com/baiyue/common/web/GlobalExceptionHandlerTest.java

@@ -2,11 +2,13 @@ package com.baiyue.common.web;
 
 import com.baiyue.common.core.api.ResultCode;
 import com.baiyue.common.core.exception.BizException;
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.mock.web.MockHttpServletRequest;
 import org.springframework.core.MethodParameter;
 import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
+import org.springframework.test.util.ReflectionTestUtils;
 
 import java.lang.reflect.Method;
 
@@ -22,7 +24,7 @@ class GlobalExceptionHandlerTest {
         request.setAttribute(CorrelationContext.REQUEST_ID, "r1");
         request.setAttribute(CorrelationContext.TRACE_ID, "t1");
         var response = handler.handleBusiness(new BizException("inventory is locked"), request);
-        assertThat(response.getStatusCode().value()).isEqualTo(400);
+        assertThat(response.getStatusCode().value()).isEqualTo(200);
         assertThat(response.getBody().code()).isEqualTo(ResultCode.BUSINESS_ERROR.code());
         assertThat(response.getBody().requestId()).isEqualTo("r1");
     }
@@ -37,10 +39,22 @@ class GlobalExceptionHandlerTest {
 
         var response = handler.handleBadRequest(exception, request);
 
-        assertThat(response.getStatusCode().value()).isEqualTo(400);
+        assertThat(response.getStatusCode().value()).isEqualTo(200);
         assertThat(response.getBody().code()).isEqualTo(ResultCode.BAD_REQUEST.code());
     }
 
+    @Test
+    void recordsBusinessFailureMetricByFiniteResultCode() {
+        SimpleMeterRegistry registry = new SimpleMeterRegistry();
+        ReflectionTestUtils.setField(handler, "meterRegistry", registry);
+
+        handler.handleBusiness(new BizException(ResultCode.CONFLICT, "duplicate"),
+                new MockHttpServletRequest());
+
+        assertThat(registry.get("baiyue.api.business.failures")
+                .tag("code", ResultCode.CONFLICT.code()).counter().count()).isEqualTo(1.0);
+    }
+
     private void paging(long page) {
     }
 }