实现底层异常捕获类

src/main/java/cn/xf/basedemo/common/exception/GlobalExceptionResolver.java

@@ -0,0 +1,53 @@
+package cn.xf.basedemo.common.exception;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerExceptionResolver;
+import org.springframework.web.servlet.ModelAndView;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+/**
+ * @Description: 全局异常捕获类（所有异常（包括拦截器、Controller、视图））HandlerExceptionResolver更底层
+ * @ClassName: GlobalExceptionResolver
+ * @Author: xiongfeng
+ * @Date: 2025/8/23 23:30
+ * @Version: 1.0
+ */
+@Slf4j
+@Component
+public class GlobalExceptionResolver implements HandlerExceptionResolver {
+	@Override
+	public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
+		response.setContentType("application/json;charset=UTF-8");
+
+		try (PrintWriter writer = response.getWriter()) {
+			if (ex instanceof LoginException) {
+				response.setStatus(HttpStatus.FORBIDDEN.value());
+				LoginException le = (LoginException) ex;
+				writer.write(new ObjectMapper().writeValueAsString(
+						new GenericResponse(le.getCode(), null, le.getMessage())
+				));
+			} else if (ex instanceof BusinessException) {
+				BusinessException be = (BusinessException) ex;
+				response.setStatus(HttpStatus.BAD_REQUEST.value());
+				writer.write(new ObjectMapper().writeValueAsString(
+						new GenericResponse(be.getCode(), null, be.getMessage())
+				));
+			} else {
+				response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
+				writer.write(new ObjectMapper().writeValueAsString(
+						new GenericResponse(500, null, "系统异常")
+				));
+			}
+		} catch (IOException ioEx) {
+			log.error("写响应失败", ioEx);
+		}
+		return new ModelAndView();
+	}
+}