{"id":7657,"date":"2023-03-01T12:50:05","date_gmt":"2023-03-01T03:50:05","guid":{"rendered":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=7657"},"modified":"2023-03-04T08:06:04","modified_gmt":"2023-03-03T23:06:04","slug":"spring-boot-jstl-form-validation","status":"publish","type":"post","link":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=7657","title":{"rendered":"Spring Boot \u2013 JSTL form validation"},"content":{"rendered":"

Spring Boot \u2013 JSTL form validation<\/h1>\n

Spring Boot \uae30\ubc18\uc73c\ub85c JSTL form validation \uc744 \ud558\ub294 \ubc29\ubc95\uc744 \uc815\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n

\uc758\uc874\uc131 \ucd94\uac00<\/h2>\n
dependencies {\n    implementation 'org.apache.tomcat.embed:tomcat-embed-jasper'\n    implementation 'org.springframework.boot:spring-boot-starter-validation'\n    implementation 'javax.servlet:jstl'\n}<\/code><\/pre>\n
Form \ud074\ub798\uc2a4<\/h2>\n
DTO \uac1d\uccb4\uc640\ub294 \ubcc4\ub3c4\ub85c Form \uac1d\uccb4\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n
@Getter\n@Setter\n@NoArgsConstructor\npublic class ItemForm {\n    private Long itemId;\n    private Long companyId;\n    @NotNull(message = "\uace0\uac1d\uc0acID \ub97c \uc785\ub825\ud558\uc138\uc694.")\n    private Long partnerId;\n    private String companyName;\n    private String partnerName;\n    @NotBlank(message = "\uc0c1\ud488\uba85\uc744 \uc785\ub825\ud558\uc138\uc694.")\n    private String itemName;\n    private String itemOptionName;\n    private Float weight;\n}<\/code><\/pre>\n
Controller<\/h2>\n
itemForm<\/code> \uc740 ItemForm<\/code> \uc640 \ub300\uc751\ud574\uc57c \ud569\ub2c8\ub2e4.
\n\ud3fc \ud074\ub798\uc2a4\uba85\uc5d0\uc11c \uccab\uae00\uc790\ub9cc \uc18c\ubb38\uc790\ub85c \ubcc0\uacbd\ud574\uc11c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.
\n\uc774\ub984\uc774 \ub2e4\ub978 \uacbd\uc6b0 \uc624\ub958 \uba54\uc2dc\uc9c0\uac00 \ud45c\uc2dc\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n
BindingResult<\/code> \ub294 \ud3fc \ud074\ub798\uc2a4 \ubc14\ub85c \ub2e4\uc74c\uc5d0 \uc704\uce58\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n
\uc624\ub958\uac00 \uc788\ub294 \uacbd\uc6b0 \ud3fc JSP \ub85c \ub2e4\uc2dc \uc774\ub3d9\uc2dc\ucf1c \uc90d\ub2c8\ub2e4.<\/p>\n
@Controller\n@RequiredArgsConstructor\npublic class ItemController {\n    @GetMapping("\/item\/create")\n    public String create(ModelMap model) {\n        model.addAttribute("itemForm", new ItemForm());\n        return "\/itemModify";\n    }\n\n    @PostMapping("\/item\/create")\n    public String doCreate(ModelMap model, @Valid ItemForm form, BindingResult bindingResult) {\n        if (bindingResult.hasErrors()) {\n            \/\/ List<ObjectError> list = bindingResult.getAllErrors();\n            \/\/ for (ObjectError error : list) {\n            \/\/     System.out.println(error);\n            \/\/ }\n            model.addAttribute("itemForm", form);\n            return "\/itemModify";\n        }\n\n        service.create(form);\n        return "redirect:\/item\/";\n    }<\/code><\/pre>\n
JSP<\/h2>\n
\uc624\ub958\uac00 \uc788\ub294 \uacbd\uc6b0 \ud45c\uc2dc\ud574 \uc90d\ub2c8\ub2e4.<\/p>\n
<%@ taglib prefix="form" uri="http:\/\/www.springframework.org\/tags\/form" %>\n<%--@elvariable id="itemForm" type="kr.pe.skyer9.warehouseweb.external.dto.ItemForm"--%>\n\n<form:form id="frm" name="frm" modelAttribute="itemForm">\n<form:input path="itemName" \/>\n<form:errors path="itemName" \/>\n<\/form:form><\/code><\/pre>\n
NumberFormatException<\/h2>\n
NumberFormatException \uc758 \uacbd\uc6b0 \ub514\ud3f4\ud2b8 \uc624\ub958 \uba54\uc2dc\uc9c0\uac00 \ub098\uc635\ub2c8\ub2e4.<\/p>\n
Failed to convert property value of type java.lang.String to required type java.lang.Float for property sizeWidth; nested exception is java.lang.NumberFormatException: For input string: "aa"<\/code><\/pre>\n
\uc624\ub958\ub97c \ud55c\uad6d\uc5b4\ub85c \ubc14\uafb8\uae30 \uc704\ud574 \ub2e4\uc74c \uc124\uc815\uc744 \ud574\uc90d\ub2c8\ub2e4.<\/p>\n
application.yaml<\/p>\n
spring:\n  messages:\n    basename: messages<\/code><\/pre>\n
resources\/messages.properties<\/p>\n
# typeMismatch.itemForm.sizeWidth=\uac00\ub85c \uc0ac\uc774\uc988\ub294 \uc22b\uc790\ub9cc \uc785\ub825\ud574\uc57c \ud569\ub2c8\ub2e4.\ntypeMismatch.java.lang.Float=\uc22b\uc790\ub85c \uc785\ub825\ud574\uc57c \ud569\ub2c8\ub2e4.<\/code><\/pre>\n
typeMismatch.\ud3fc\uc774\ub984.\ud544\ub4dc\uba85<\/code> \uc774 \uc788\ub294 \uacbd\uc6b0 \uadf8 \uc624\ub958\uba54\uc2dc\uc9c0\uac00 \ud45c\uc2dc\ub429\ub2c8\ub2e4.
\n\ub300\uc751\ud558\ub294 \ucf54\ub4dc\uac00 \uc5c6\ub294 \uacbd\uc6b0 typeMismatch.java.lang.Float<\/code> \uc640 \uac19\uc774 \ubc94\uc6a9 \uc624\ub958\uba54\uc2dc\uc9c0\uac00 \ud45c\uc2dc\ub429\ub2c8\ub2e4.<\/p>\n
\"\"<\/a><\/p>\n
Form \ud074\ub798\uc2a4 \ubd84\ub9ac<\/h2>\n
\uc785\ub825\uc6a9 \ud074\ub798\uc2a4 \uc790\uccb4\ub97c \ubd84\ub9ac\ud558\ub294 \uac83\uc774 \uacb0\uacfc\uc801\uc73c\ub85c\ub294 \uc81c\uc77c \uac04\ub2e8\ud569\ub2c8\ub2e4.<\/p>\n
public class UserCreateForm {\n}\n\npublic class UserModifyForm {\n}\n\npublic class UserChangePasswordForm {\n}<\/code><\/pre>\n
Custom Validator<\/h2>\n
\ubcf5\ud569 \uc870\uac74\uacfc \uac19\uc740 \ud2b9\uc218\ud55c \uccb4\ud06c\ub97c \uc704\ud574 Custom Validator \ub97c \uc0dd\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
import org.springframework.validation.Validator;\n\n@Component\npublic class UserCreateValidator implements Validator {\n    @Override\n    public boolean supports(Class<?> clazz) {\n        return UserCreateForm.class.isAssignableFrom(clazz);\n    }\n\n    @Override\n    public void validate(Object target, Errors errors) {\n        UserCreateForm dto = (UserCreateForm) target;\n\n        if (ObjectUtils.isEmpty(dto.getCompanyId())) {\n            errors.rejectValue("companyId", "required", "\uc5c5\uccb4ID \ub97c \uc785\ub825\ud558\uc138\uc694.");\n        }\n\n        if (!Objects.equals(dto.getUserLoginPassword(), dto.getUserLoginPassword2())) {\n            errors.rejectValue("userLoginPassword2", "passwordNotMatch", "\ube44\ubc00\ubc88\ud638\uac00 \uc77c\uce58\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.");\n        }\n    }\n}<\/code><\/pre>\n
userCreateForm \uc740 \uac80\uc99d\ud560 \ud074\ub798\uc2a4 UserCreateForm \uc5d0\uc11c \uccab\uae00\uc790\ub9cc \uc18c\ubb38\uc790\ub85c \ubcc0\uacbd\ud55c \uac83\uc785\ub2c8\ub2e4.<\/p>\n
@Controller\n@RequiredArgsConstructor\npublic class AdminUserController {\n\n    private final UserService service;\n    private final UserCreateValidator userCreateValidator;\n\n    @InitBinder("userCreateForm")\n    public void initBinder(WebDataBinder webDataBinder) {\n        webDataBinder.addValidators(userCreateValidator);\n    }\n\n    @PostMapping("\/admin\/user\/create")\n    public String doCreate(@LoginInfo LoginInfoDto loginInfo, ModelMap model, @Valid UserCreateForm dto, BindingResult bindingResult) {\n        if (bindingResult.hasErrors()) {\n            setAttribute(loginInfo, model);\n            model.addAttribute("userCreateForm", dto);\n            return "\/admin\/userModify";\n        }\n        service.create(loginInfo, dto);\n        return "redirect:\/admin\/user\/";\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
Spring Boot \u2013 JSTL form validation Spring Boot \uae30\ubc18\uc73c\ub85c JSTL form validation \uc744 \ud558\ub294 \ubc29\ubc95\uc744 \uc815\ub9ac\ud569\ub2c8\ub2e4. \uc758\uc874\uc131 \ucd94\uac00 dependencies { implementation 'org.apache.tomcat.embed:tomcat-embed-jasper' implementation 'org.springframework.boot:spring-boot-starter-validation' implementation 'javax.servlet:jstl' } Form \ud074\ub798\uc2a4 DTO \uac1d\uccb4\uc640\ub294 \ubcc4\ub3c4\ub85c Form \uac1d\uccb4\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. @Getter @Setter @NoArgsConstructor public class ItemForm { private Long itemId; private Long companyId; @NotNull(message = "\uace0\uac1d\uc0acID \ub97c \uc785\ub825\ud558\uc138\uc694.") private Long\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"class_list":["post-7657","post","type-post","status-publish","format-standard","hentry","category-spring-boot-2-5"],"_links":{"self":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/7657","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7657"}],"version-history":[{"count":5,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/7657\/revisions"}],"predecessor-version":[{"id":7674,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/7657\/revisions\/7674"}],"wp:attachment":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}