利用springmvc自帶的異常處理機(jī)制, 自定義了一個(gè)異常處理類. 經(jīng)測(cè)試:

1. 1/0拋的RuntimeException能夠被捕獲到.
2. 自定義異常類, 然后手動(dòng)拋的, 也能夠捕獲到.
3. 但是mysql異常并沒有走到異常處理類中.(如com.mysql.jdbc.exceptions.jdbc4.CommunicationsException)

異常處理類:

@ControllerAdvice
public class CustomerExceptionResolver  implements HandlerExceptionResolver {
    @ExceptionHandler(Exception.class)
    @ResponseBody
    public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception e) {
        e.printStackTrace();
        //將異常輸出到日志
        log.error("異常:",e);
        ....

service方法:

public ResponseResult selectByName4Smart(String name) throws CustomException {
        //調(diào)用mapper的查詢方法
        //由于連不上mysql服務(wù), 這里會(huì)報(bào)異常
        //期望的是他能夠被異常處理類捕獲
        List<String> certNos = customerMapper.selectCertNosLikeName(name);
        ...