Spring mvc 返回json时异常统一处理

加入以下代码就可以了，注意此类一定要在spring扫描的包下

import com.crm.model.common.ResponseEntity;
import com.crm.model.common.contstants.RequestStatusContants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;

@ControllerAdvice
public class ApplicationControllerExceptionHandler {
    private static final Logger logger = LoggerFactory.getLogger(ApplicationControllerExceptionHandler.class);
    @ExceptionHandler(value = Exception.class)
    @ResponseBody
    public ResponseEntity handlerError(HttpServletRequest req, Exception e) {
        ResponseEntity entity = new ResponseEntity();
        entity.setStatus(RequestStatusContants.SERVER_ERROR_ERROR);
        entity.setMessage("系统繁忙，请稍后重试");
        logger.error("调用" + req.getRequestURI() + "错误", e);
        return entity;
    }
}