使用Bean Validation 2.0(JSR-308)和Spring 5验证bean列表 [英] Validating a List of beans using Bean Validation 2.0 (JSR-308) and Spring 5
问题描述
Spring 5应该支持Bean Validation 2.0,该版本引入了对List类型的验证,但是我似乎无法让它对我有用.
我的@RestController
中具有以下端点:
@PostMapping("/foos")
public List<Foo> analysePoints(@RequestBody @Valid List<@Valid Foo> request) {
...
}
Foo类的属性上有一些JSR验证注释.
不幸的是,这似乎根本没有验证它.在Spring 5之前,我通过将List<Foo>
包装在单独的请求bean对象中来解决此问题,在这种情况下也可以使用,但是我不想这样做,因为它会更改所需json的格式./p>
有什么办法可以使它正常工作吗?
javax.validation
不会验证列表,仅验证JavaBean.解决方法是使用自定义的List类:
代替
@RequestBody @Valid List<@Valid Foo> request
使用:
@RequestBody @Valid ValidList<@Valid Foo> request
有效列表
public class ValidList<E> implements List<E> {
@Valid
private List<E> list;
public ValidList() {
this.list = new ArrayList<E>();
}
public ValidList(List<E> list) {
this.list = list;
}
// Bean-like methods, used by javax.validation but ignored by JSON parsing
public List<E> getList() {
return list;
}
public void setList(List<E> list) {
this.list = list;
}
// List-like methods, used by JSON parsing but ignored by javax.validation
@Override
public int size() {
return list.size();
}
@Override
public boolean isEmpty() {
return list.isEmpty();
}
// Other list methods ...
}
Spring 5 is supposed to support Bean Validation 2.0 which introduced validation on List types but I can't seem to get it to work for me.
I have the following endpoint in my @RestController
:
@PostMapping("/foos")
public List<Foo> analysePoints(@RequestBody @Valid List<@Valid Foo> request) {
...
}
Where the class Foo has some JSR validation annotations on its properties.
Unfortunately, this doesn't seem to validate it at all. Prior to Spring 5 I got around this by wrapping the List<Foo>
in a separate request bean object and this does work in this case too but I don't want to have to do this because it changes the format of the json required.
Is there any way to get this working?
javax.validation
won't validate a list, only a JavaBean. The workaround is to use a customized List class:
Instead of
@RequestBody @Valid List<@Valid Foo> request
Use:
@RequestBody @Valid ValidList<@Valid Foo> request
ValidList
public class ValidList<E> implements List<E> {
@Valid
private List<E> list;
public ValidList() {
this.list = new ArrayList<E>();
}
public ValidList(List<E> list) {
this.list = list;
}
// Bean-like methods, used by javax.validation but ignored by JSON parsing
public List<E> getList() {
return list;
}
public void setList(List<E> list) {
this.list = list;
}
// List-like methods, used by JSON parsing but ignored by javax.validation
@Override
public int size() {
return list.size();
}
@Override
public boolean isEmpty() {
return list.isEmpty();
}
// Other list methods ...
}
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