相关疑难解决方法(0)

我有以下控制器类

package com.java.rest.controllers;
@Controller
@RequestMapping("/api")
public class TestController {

@Autowired
private VoucherService voucherService;


@RequestMapping(value = "/redeemedVoucher", method = { RequestMethod.GET })
@ResponseBody
public ResponseEntity redeemedVoucher(@RequestParam("voucherCode") String voucherCode) throws Exception {
    if(voucherCode.equals( "" )){
        throw new MethodArgumentNotValidException(null, null);
    }
    Voucher voucher=voucherService.findVoucherByVoucherCode( voucherCode );
    if(voucher!= null){
        HttpHeaders headers = new HttpHeaders();
        headers.add("Content-Type", "application/json; charset=utf-8");
        voucher.setStatus( "redeemed" );
        voucher.setAmount(new BigDecimal(0));
        voucherService.redeemedVoucher(voucher);
        return new ResponseEntity(voucher, headers, HttpStatus.OK);

    }
    else{
        throw new ClassNotFoundException();
    }
};

}

对于异常处理,我使用的是Spring3.2建议处理程序,如下所示

package com.java.rest.controllers;


@ControllerAdvice
public class VMSCenteralExceptionHandler extends ResponseEntityExceptionHandler{ …