feat(GlobalException):空指针异常处理

src/main/java/com/dlbridge/jadp/config/web/GlobalExceptionHandler.java

@@ -10,9 +10,14 @@ import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 import org.springframework.web.multipart.MaxUploadSizeExceededException;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.util.Arrays;
+import java.util.Map;
 import java.util.Objects;
+import java.util.stream.Collectors;
+
 @Log4j2
 @Order(0)
 @RestControllerAdvice
@@ -43,4 +48,48 @@ public class GlobalExceptionHandler {
         response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
         return ResultBean.fail("文件大小超出限制，最大允许: "+maxFileSize);
     }
+
+    @ResponseBody
+    @ExceptionHandler(NullPointerException.class)
+    public ResultBean<?> handleNpe(NullPointerException ex, HttpServletRequest request) {
+        String uri = request.getRequestURI();
+        String method = request.getMethod();
+        String query = request.getQueryString();
+        String ip = getClientIp(request);
+        String params = getRequestParams(request);
+        log.error("NullPointerException occurred\n" + "URI      : {}\n" + "Method   : {}\n" + "Query    : {}\n" + "params    :{}\n" + "IP       : {}\n" + "Message  : {} ", uri, method, query, params, ip, ex.getMessage(), ex);
+        return ResultBean.fail("服务器异常，请稍后再试");
+    }
+
+    /**
+     * 获取请求的ip
+     * @param request 请求参数
+     * @return ip
+     */
+    private String getClientIp(HttpServletRequest request) {
+        String ip = request.getHeader("X-Forwarded-For");
+        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
+            ip = request.getHeader("X-Real-IP");
+        }
+        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
+            ip = request.getRemoteAddr();
+        }
+        return ip;
+    }
+
+    /**
+     * 获取请求参数
+     * @param request 请求参数
+     * @return params
+     */
+    private String getRequestParams(HttpServletRequest request) {
+        Map<String, String[]> paramMap = request.getParameterMap();
+        if (paramMap.isEmpty()) {
+            return "";
+        }
+        return paramMap.entrySet()
+                .stream()
+                .map(e -> e.getKey() + "=" + Arrays.toString(e.getValue()))
+                .collect(Collectors.joining("&"));
+    }
 }