HandlerExceptionResolver 统一异常处理

/**
 * Created by geely
 */

@Component
public class ExceptionResolver implements HandlerExceptionResolver{
	private final static transient Logger logger = LoggerFactory.getLogger(ExceptionResolver.class);
	

    @Override
    public ModelAndView resolveException(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) {
    	logger.error("{} Exception",httpServletRequest.getRequestURI(),e);
        ModelAndView modelAndView = new ModelAndView(new MappingJackson2JsonView());

        //当使用是jackson2.x的时候使用MappingJackson2JsonView，课程中使用的是1.9。
        modelAndView.addObject("status",ResponseCode.ERROR.getCode());
        modelAndView.addObject("msg","接口异常,详情请查看服务端日志的异常信息");
        modelAndView.addObject("data",e.toString());
        return modelAndView;
    }

}

public enum ResponseCode {

    SUCCESS(0,"SUCCESS"),
    ERROR(1,"ERROR"),
    NEED_LOGIN(10,"NEED_LOGIN"),
    ILLEGAL_ARGUMENT(2,"ILLEGAL_ARGUMENT");

    private final int code;
    private final String desc;


    ResponseCode(int code,String desc){
        this.code = code;
        this.desc = desc;
    }

    public int getCode(){
        return code;
    }
    public String getDesc(){
        return desc;
    }

}

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