k",
"data": {
"id": 1,
"name": "name1"
}
}
Èç¹ûÕâÁ½ÖÖ·ç¸ñÒ²²»ÄÜÂú×ãÐèÒª£¬ÎÒÃÇ»¹¿ÉÒÔ¸ù¾Ý×Ô¼ºµÄÐèÒª½øÐÐ×Ô¶¨Òå·µ»ØµÄResponse¸ñʽ¡£Ïêϸ¼û±¾ÎÄ 4.3×Ô¶¨ÒåRespnse¸ñʽ¡£
? Òì³£´¦ÀíµÄ³¡¾°
ͨ¹ýGraceful Response£¬ÎÒÃDz»ÐèҪרÃÅÔÚControllerÖд¦ÀíÒì³££¬Ïêϸ¼û 4.1 Graceful ResponseÒì³£´íÎóÂë´¦Àí¡£
? ·µ»ØֵΪ¿ÕµÄ³¡¾°
ijЩCommandÀàÐ͵ķ½·¨Ö»Ö´ÐÐÐ޸IJÙ×÷£¬²»·µ»ØÊý¾Ý£¬Õâ¸öʱºòÎÒÃÇ¿ÉÒÔÖ±½ÓÔÚControllerÖзµ»Øvoid£¬Graceful Response»á×Ô¶¯·âװĬÈϵIJÙ×÷³É¹¦Response±¨ÎÄ¡£
@Controller
public class Controller {
@RequestMapping("/void")
@ResponseBody
public void testVoidResponse() {
//Ê¡ÂÔÒµÎñ²Ù×÷
}
}
testVoidResponse
·½·¨µÄ·µ»Øʱvoid£¬µ÷ÓÃÕâ¸ö½Ó¿Úʱ£¬½«·µ»Ø£º
{
"status": {
"code": "200",
"msg": "success"
},
"payload": {}
}
3.4 Service·½·¨ÒµÎñ´¦Àí
ÔÚÒýÈëGraceful Responseºó£¬Service²ãµÄ·½·¨µÄ¿É¶ÁÐÔ¿ÉÒԵõ½¼«´óµÄÌáÉý¡£
? ½Ó¿ÚÖ±½Ó·µ»ØÒµÎñÊý¾ÝÀàÐÍ£¬¶ø²»ÊÇResponse£¬¸ü¾ß±¸¿É¶ÁÐÔ
public interface ExampleService {
UserInfoView query1(Query query);
}
? Service½Ó¿ÚʵÏÖÀàÖУ¬Ö±½ÓÅ××Ô¶¨ÒåµÄÒµÎñÒì³££¬Graceful Response½«Æäת»¯Îª·µ»Ø´íÎóÂëºÍ´íÎóÌáʾ
public class ExampleServiceImpl implements ExampleService {
@Resource
private UserInfoMapper mapper;
public UserInfoView query1(Query query) {
UserInfo userInfo = mapper.findOne(query.getId());
if (Objects.isNull(userInfo)) {
//ÕâÀïÖ±½ÓÅ××Ô¶¨ÒåÒì³££¬Ò쳣ͨ¹ý@ExceptionMapperÐÞÊΣ¬ÌṩÒì³£ÂëºÍÒì³£Ìáʾ
throw new NotFoundException();
}
// Ê¡ÂÔºóÐøÒµÎñ²Ù×÷
}
}
/**
* NotFoundExceptionµÄ¶¨Ò壬ʹÓÃ@ExceptionMapper×¢½âÐÞÊÎ
* code:´ú±í½Ó¿ÚµÄÒì³£Âë
* msg:´ú±í½Ó¿ÚµÄÒì³£Ìáʾ
*/
@ExceptionMapper(code = "1404", msg = "ÕÒ²»µ½¶ÔÏó")
public class NotFoundException extends RuntimeException {
}
//Controller²»ÔÙ²¶»ñ´¦ÀíÒì³£
@RequestMapping("/get")
@ResponseBody
public UserInfoView get(Query query)) {
return exampleService.query1(query);
}
µ±Service·½·¨Å׳öNotFoundExceptionÒ쳣ʱ£¬½Ó¿Ú½«Ö±½Ó·µ»Ø´íÎóÂ룬²»ÐèÒªÊÖ¹¤set£¬¼«´óµØ¼ò»¯ÁËÒì³£´¦ÀíÂß¼¡£
{
"status": {
"code": "1404",
"msg": "ÕÒ²»µ½¶ÔÏó"
},
"payload": {}
}
ÑéÖ¤£ºÆô¶¯example¹¤³Ìºó£¬ÇëÇóhttp://localhost:9090/example/notfound
4. ½ø½×Ó÷¨
4.1 Graceful ResponseÒì³£´íÎóÂë´¦Àí
ÒÔÏÂÊÇʹÓÃGraceful Response½øÐÐÒì³£¡¢´íÎóÂë´¦ÀíµÄ¿ª·¢²½Öè¡£
? ´´½¨×Ô¶¨ÒåÒì³£
ͨ¹ý¼Ì³ÐRuntimeExceptionÀà´´½¨×Ô¶¨ÒåµÄÒì³££¬²ÉÓà @ExceptionMapper
×¢½âÐÞÊΣ¬×¢½âµÄ code
ÊôÐÔΪ·µ»ØÂ룬msg
ÊôÐÔΪ´íÎóÌáʾÐÅÏ¢¡£
¹ØÓÚÊǼ̳ÐRuntimeException»¹ÊǼ̳ÐException£¬¶ÁÕß¿ÉÒÔ¸ù¾Ýʵ¼ÊÇé¿öȥѡÔñ£¬Graceful Response¶ÔÁ½Õ߶¼Ö§³Ö¡£
@ExceptionMapper(code = "1007", msg = "ÓÐÄÚ¹í£¬ÖÕÖ¹½»Ò×")
public static final class RatException extends RuntimeException {
}
? ServiceÖ´ÐоßÌåÂß¼
ServiceÖ´ÐÐÒµÎñÂß¼µÄ¹ý³ÌÖУ¬ÐèÒªÅ×Òì³£µÄʱºòÖ±½ÓÅ׳öÈ¥¼´¿É¡£ÓÉÓÚÒѾͨ¹ý@ExceptionMapper¶¨ÒåÁ˸ÃÒì³£µÄ´íÎóÂ룬ÎÒÃDz»ÐèÒªÔÙµ¥¶ÀµÄά»¤Òì³£Âëö¾ÙÓëÒì³£ÀàµÄ¹Øϵ¡£
//Service²ãα´úÂë
public class Service {
public void illegalTransaction() {
//ÐèÒªÅ×Òì³£µÄʱºòÖ±½ÓÅ×
if (check()) {
throw new RatException();
}
doIllegalTransaction();
}
}
Controller²ãµ÷ÓÃService²ãα´úÂ룺
public class Controller {
@RequestMapping("/test3")
public void test3() {
//ControllerÖв»»á½øÐÐÒì³£´¦Àí£¬Ò²²»»áÊÖ¹¤set´íÎóÂ룬ֻ¹ØÐĺËÐIJÙ×÷£¬ÆäËûµÄͳͳ½»¸øGraceful Response
exampleService.illegalTransaction();
}
}
ÔÚä¯ÀÀÆ÷ÖÐÇëÇócontrollerµÄ/test3·½·¨£¬ÓÐÒ쳣ʱ½«»á·µ»Ø£º
{
"status": {
"code": "1007",
"msg": "ÓÐÄÚ¹í£¬ÖÕÖ¹½»Ò×"
},
"payload": {
}
}
4.2 ÍⲿÒì³£±ðÃû
°¸Àý¹¤³Ì( https://github.com/feiniaojin/graceful-response-example.git )Æô¶¯ºó£¬ ͨ¹ýä¯ÀÀÆ÷·ÃÎÊÒ»¸ö²»´æÔڵĽӿڣ¬ÀýÈç http://localhost:9090/example/get2?id=1
Èç¹ûû¿ªÆôGraceful Response£¬½«»áÌøתµ½404Ò³Ã棬Ö÷ÒªÔÒòÊÇÓ¦ÓÃÄÚ²¿²úÉúÁË NoHandlerFoundException
Òì³£¡£Èç¹û¿ªÆôÁËGraceful Response£¬Ä¬Èϻ᷵»Øcode=1µÄ´íÎóÂë¡£
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