FormParamProvider.java 文件源码

@Override
@SuppressWarnings("unchecked")
public T get() {
    final MinijaxRequestContext context = MinijaxRequestContext.getThreadLocal();
    final Class<?> c = key.getType();
    final MinijaxForm form = context.getForm();
    final String name = key.getName();

    if (c == InputStream.class) {
        return form == null ? null : (T) form.getInputStream(name);
    }

    if (c == Part.class) {
        return form == null ? null : (T) form.getPart(name);
    }

    String value = form == null ? null : form.getString(name);

    final DefaultValue defaultValue = key.getDefaultValue();
    if (value == null && defaultValue != null) {
        value = defaultValue.value();
    }

    return (T) context.getApplication().convertParamToType(value, c, key.getAnnotations());
}