在我正在使用 Spring 2.5.6.SEC01 的 Web 应用程序中,我基本上有一个整数字段,它使用一个数字来确定要滚动到哪个页面。要求发生了变化,我们不再希望显示错误消息,而是在用户输入无效数字(例如“adfadf”)时忽略用户的输入。
我在读到您可以通过以下方式做到这一点:
TypeMismatch.property=一些新的错误信息
但是,在尝试之后,我们仍然收到原始错误消息: java.lang.Integer.TypeMismatch=...
我只想为给定的属性禁用此消息。我怎样才能做到这一点?我仍然希望绑定(bind)自动发生,我只是不想现在听到它。
沃尔特
最佳答案
根据 DefaultMessageCodesResolver
如果代码“typeMismatch”,对象名称“user”,字段“age”
- typeMismatch.user.age
- typeMismatch.age
- 类型不匹配.int
- 类型不匹配
所以你应该得到(我想你的 commandName 被称为 command 并且你的属性是 age)根据你的代码进行调整
typeMismatch.command.age
typeMismatch.age
typeMismatch.java.lang.Integer
typeMismatch
注意第三段代码
typeMismatch.java.lang.Integer
它会解决你想要的
更新
我创建了一个 Person 命令类
public class Person implements Serializable {
private Integer age;
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
和个人 Controller
public class PersonController extends SimpleFormController {
public PersonController() {
setCommandClass(Person.class);
setValidator(new Validator() {
public boolean supports(Class clazz) {
return clazz.isAssignableFrom(Person.class);
}
public void validate(Object command, Errors errors) {
rejectIfEmpty(errors, "age", "Age is required");
}
});
}
@Override
protected ModelAndView onSubmit(Object command) throws Exception {
return new ModelAndView();
}
}
这是我的 myMessages.properties(类路径的根目录)
typeMismatch.command.age=typeMismatch.command.age
typeMismatch.age=typeMismatch.age
typeMismatch.java.lang.Integer=typeMismatch.java.lang.Integer
typeMismatch=typeMismatch
所以,我做了下面的测试
public class PersonControllerTest {
private PersonController personController;
private MockHttpServletRequest request;
private MessageSource messageSource;
@Before
public void setUp() {
request = new MockHttpServletRequest();
request.setMethod("POST");
personController = new PersonController();
messageSource = new ResourceBundleMessageSource();
((ResourceBundleMessageSource) messageSource).setBasename("myMessages");
}
@Test
public void failureSubmission() throws Exception {
/**
* Ops... a bindException
*
* Age can not be a plain String, It must be a plain Integer
*/
request.addParameter("age", "not a meaningful age");
ModelAndView mav = personController.handleRequest(request, new MockHttpServletResponse());
BindingResult bindException = (BindingResult) mav.getModel().get(BindingResult.MODEL_KEY_PREFIX + "command");
for (Object object : bindException.getAllErrors()) {
if(object instanceof FieldError) {
FieldError fieldError = (FieldError) object;
assertEquals(fieldError.getField(), "age");
/**
* outputs typeMismatch.command.age
*/
System.out.println(messageSource.getMessage((FieldError) object, null));
}
}
}
}
如果你想要第二个,你必须摆脱 typeMismatch.command.age 关键资源包
typeMismatch.age=typeMismatch.age
typeMismatch.java.lang.Integer=typeMismatch.java.lang.Integer
typeMismatch=typeMismatch
或者自己编写 MessageCodesResolver 的实现
public class MyCustomMessageCodesResolver implements MessageCodesResolver {
private DefaultMessageCodesResolver defaultMessageCodesResolver = new DefaultMessageCodesResolver();
public String [] resolveMessageCodes(String errorCode, String objectName) {
if(errorCode.equals("age"))
/**
* Set up your custom message right here
*/
return new String[] {"typeMismatch.age"};
return defaultMessageCodesResolver.resolveMessageCodes(String errorCode, String objectName);
}
public void String[] resolveMessageCodes(String errorCode, String objectName, String field, Class fieldType) {
if(errorCode.equals("age"))
/**
* Set up your custom message right here
*/
return new String[] {"typeMismatch.age"};
return defaultMessageCodesResolver.resolveMessageCodes(String errorCode, String objectName, String field, Class fieldType);
}
}
并设置你的 PersonController
public class PersonController extends SimpleFormController {
public PersonController() {
setMessageCodesResolver(new MyCustomMessageCodesResolver());
setCommandClass(Person.class);
setValidator(new Validator() {
public boolean supports(Class clazz) {
return clazz.isAssignableFrom(Person.class);
}
public void validate(Object command, Errors errors) {
rejectIfEmpty(errors, "age", "Age is required");
}
});
}
关于java - Spring - 禁用绑定(bind)异常(针对特定属性),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/2835037/