@ExceptionHandler

时间:2021-03-20 15:11:18
@Controller
public class AccessController { /**
* 异常页面控制
*
* @param runtimeException
* @return
*/
@ExceptionHandler(RuntimeException.class)
public @ResponseBody
Map<String,Object> runtimeExceptionHandler(RuntimeException runtimeException) {
logger.error(runtimeException.getLocalizedMessage()); Map model = new TreeMap();
model.put("status", false);
return model;
} }

当这个Controller中任何一个方法发生异常,一定会被这个方法拦截到。然后,输出日志。封装Map并返回,页面上得到status为false。就这么简单。@ExceptionHandler

或者这个有些有些复杂,来个简单易懂的,上代码:

@Controller
public class AccessController {
/**
* 异常页面控制
*
* @param runtimeException
* @return
*/
@ExceptionHandler(RuntimeException.class)
public String runtimeExceptionHandler(RuntimeException runtimeException,
ModelMap modelMap) {
logger.error(runtimeException.getLocalizedMessage()); modelMap.put("status", IntegralConstant.FAIL_STATUS);
return "exception";
}
}