传统的异常处理方式
try {
//业务处理
initResult(result, null, commodityDto);
} catch (BusinessException e) {
Log.error("处理异常:{}", ErrorUtils.getErrorMessage(e));
return new Result<>(ServiceError.SERVICE_PROCESS_ERROR.value(), e.getMessage());
}catch (Exception e) {
Log.error("处理异常:{}", ErrorUtils.getErrorMessage(e));
return new Result<>(ServiceError.SERVICE_PROCESS_ERROR.value(), e.getMessage());
}
目前比较通用的处理方式：全局异常处理
针对不同的异常，进行统一的处理，
@RestControllerAdvice
public class GlobalExceptionHandler {
private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);
@ExceptionHandler(AuthorizationException.class)
private ResponseEntity handleAuthorizationException(AuthorizationException e, HttpServletRequest request) {
String requestURI = request.getRequestURI();
log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(e.getMessage());
}
@ExceptionHandler(Exception.class)
private ResponseEntity handleException(Exception e, HttpServletRequest request) {
String requestURI = request.getRequestURI();
log.error("请求地址'{}',校验失败'{}'", requestURI, e.getMessage());
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(e.getMessage());
}
}
当然此种方式只适用于SpringMVC中Controller/RestController使用
实现原理： 注解+切面
实现方式
1、定义切面配置
@Configuration
public class ExceptionConfig {
@Bean
public AspectJExpressionPointcutAdvisor configurabledvisor()
{
AspectJExpressionPointcutAdvisor advisor = new AspectJExpressionPointcutAdvisor();
advisor.setExpression("execution(com.jun.service...(..)) && @annotation(com.ztocwst.stone.common.annotation.Annotation)");
advisor.setAdvice(new ExceptionHandler());
return advisor;
}
}
2、定义异常处理拦截
@Component public class ExceptionHandler implements MethodInterceptor {
@Override
public Object invoke(MethodInvocation methodInvocation)
throws Throwable
{
return handler(methodInvocation);
}
public Object handler(MethodInvocation methodInvocation) throws Throwable {
Annotation annotation = (Annotation)methodInvocation.getMethod().getAnnotation(Annotation.class);
String url = annotation == null ? "" : annotation.value();
try {
return methodInvocation.proceed();
} catch (Exception e) {
Log.error("url：{}，系统异常：{}", url, ErrorUtils.getErrorMessage(e));
return handleException(e);
}
}
public Result handleException(Exception e)
{
return new Result(HttpStatus.INTERNAL_SERVER_ERROR.value(), e.getMessage());
}
}
3、使用 @Override
@Annotation(name = "查询用户", value = "zl.base.getUser")
public Result getUser(Long userId){
Result result = new Result<>();
if(userId.getId()==null){
throw new BusinessException(UserServiceError.SERVICE_CHECK_PARAM_NULL);
}
//具体查询
}
