Spring - 禁用绑定异常（对于特定属性） [英] Spring - disable bind exceptions (for a particular property)
问题描述
我是阅读您可以通过以下方式进行：
TypeMismatch.property =一些新的错误消息
然而，尝试，我们仍然得到原始的错误消息：
java.lang.Integer.TypeMismatch = ...
我只想禁用此消息给定的财产。我怎样才能做到这一点？我仍然希望绑定自动发生，我现在不想听到。
Walter
根据 DefaultMessageCodesResolver
如果代码typeMismatch，对象名称user，字段age
- typeMismatch.user.age
- typeMismatch.age
- typeMismatch.int
-
- typeMismatch
所以你应该得到（我想你的命令名称叫做 em>并且您的财产是 age ）根据您的代码修改
typeMismatch.command.age
typeMismatch.age
typeMismatch.java.lang.Integer
typeMismatch
注意第三个代码
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;
}
}
一个人控制器
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异常{
返回新的ModelAndView（）;
}
}
这里是myMessages.properties根路径）
typeMismatch.command.age = typeMismatch.command.age
typeMismatch.age = typeMismatch。 age
typeMismatch.java.lang.Integer = typeMismatch.java.lang.Integer
typeMismatch = typeMismatch
所以，我做了以下测试
public class PersonControllerTest {
私人PersonController personController;
私人MockHttpServletRequest请求;
私人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异常{
/ **
* Ops ...一个bindException
*
*年龄不能是纯粹的字符串，它必须是一个纯整数
* /
request.addParameter（age，不是有意义的年龄）;
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）;
/ **
*输出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关键资源束
typeMismatch.age = typeMismatch.age
typeMismatch.java.lang.Integer = typeMismatch.java.lang.Integer
typeMismatch = typeMismatch
或编写自己的MessageCodesResolver实现
public class MyCustomMessageCodesResolver实现MessageCodesResolver {
private DefaultMessageCodesResolver defaultMessageCodesResolver = new DefaultMessageCodesResolver（）;
public String [] resolveMessageCodes（String errorCode，String objectName）{
if（errorCode.equals（age））
/ **
*设置你的自定义消息就在这里
* /
return new String [] {typeMismatch.age};
返回defaultMessageCodesResolver.resolveMessageCodes（String errorCode，String objectName）;
}
public void String [] resolveMessageCodes（String errorCode，String objectName，String field，Class fieldType）{
if（errorCode.equals（age））
/ **
*在这里设置你的自定义消息
* /
return new String [] {typeMismatch.age};
return defaultMessageCodesResolver.resolveMessageCodes（String errorCode，String objectName，String field，Class fieldType）;
}
}
并设置您的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）;
}
}）;
}
In a web application I'm working on using Spring 2.5.6.SEC01, I essentially have an Integer field that takes a number to determine which page to scroll to. The requirements changed, and we no longer want to display an error message, but simply ignore the user's input if they enter an invalid number, say "adfadf".
I was reading that you can do that via:
TypeMismatch.property=Some New Error Message
However, after having tried that, we are still getting the original error message: java.lang.Integer.TypeMismatch=...
I only want to disable this message for that given property. How can I do that? I still want binding to occur automatically, I just don't want to hear about it now.
Walter
According to DefaultMessageCodesResolver
In case of code "typeMismatch", object name "user", field "age"
- typeMismatch.user.age
- typeMismatch.age
- typeMismatch.int
- typeMismatch
So you should get (I suppose your commandName is called command and your property is age) Adapt according to your code
typeMismatch.command.age
typeMismatch.age
typeMismatch.java.lang.Integer
typeMismatch
Notice The third code
typeMismatch.java.lang.Integer
It will solve what you want
UPDATE
I have created a Person command class
public class Person implements Serializable {
private Integer age;
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
And a person 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();
}
}
Here goes my myMessages.properties (root of the classpath)
typeMismatch.command.age=typeMismatch.command.age
typeMismatch.age=typeMismatch.age
typeMismatch.java.lang.Integer=typeMismatch.java.lang.Integer
typeMismatch=typeMismatch
So, i have done the following test
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));
}
}
}
}
If you want the second one, you must get rid of typeMismatch.command.age key resource bundle
typeMismatch.age=typeMismatch.age
typeMismatch.java.lang.Integer=typeMismatch.java.lang.Integer
typeMismatch=typeMismatch
Or write your own implementation of MessageCodesResolver
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);
}
}
And set up your 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");
}
});
}
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