Spring中对象列表的验证

Question

@RequestMapping(value="/map/update", method=RequestMethod.POST, produces = "application/json; charset=utf-8")
@ResponseBody
public ResponseEntityWrapper updateMapTheme(
        HttpServletRequest request, 
        @RequestBody @Valid List<CompanyTag> categories,
        HttpServletResponse response
        ) throws ResourceNotFoundException, AuthorizationException {
...
}

public class CompanyTag {
    @StringUUIDValidation String key;
    String value;
    String color;
    String icon;
    Icon iconObj;

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }
   ...
}

@RequestBody @Valid List<CompanyTag> categories,

使用：

@RequestBody @Valid CompanyTag category,

它按照预期工作，所以Spring显然不喜欢验证事物列表（尝试使用数组，但也不起作用）。

有人知道缺了什么吗？

Answer 1

我找到了另一个可行的方法。基本问题是，您希望有一个列表作为服务的输入负载，但是javax.validation不会验证列表，只验证JavaBean。诀窍是使用一个自定义的list类,它同时充当list和JavaBean：

@RequestBody @Valid List<CompanyTag> categories

更改为：

@RequestBody @Valid ValidList<CompanyTag> categories

list子类看起来如下所示：

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 ...
}