import com.fasterxml.jackson.databind.JavaType; //导入方法依赖的package包/类
protected void initTypeInclusion(ObjectMapper mapObjectMapper) {
TypeResolverBuilder> mapTyper = new DefaultTypeResolverBuilder(DefaultTyping.NON_FINAL) {
public boolean useForType(JavaType t) {
switch (_appliesFor) {
case NON_CONCRETE_AND_ARRAYS:
while (t.isArrayType()) {
t = t.getContentType();
}
// fall through
case OBJECT_AND_NON_CONCRETE:
return (t.getRawClass() == Object.class) || !t.isConcrete();
case NON_FINAL:
while (t.isArrayType()) {
t = t.getContentType();
}
// to fix problem with wrong long to int conversion
if (t.getRawClass() == Long.class) {
return true;
}
if (t.getRawClass() == XMLGregorianCalendar.class) {
return false;
}
return !t.isFinal(); // includes Object.class
default:
// case JAVA_LANG_OBJECT:
return (t.getRawClass() == Object.class);
}
}
};
mapTyper.init(JsonTypeInfo.Id.CLASS, null);
mapTyper.inclusion(JsonTypeInfo.As.PROPERTY);
mapObjectMapper.setDefaultTyping(mapTyper);
// warm up codec
try {
byte[] s = mapObjectMapper.writeValueAsBytes(1);
mapObjectMapper.readValue(s, Object.class);
} catch (IOException e) {
throw new IllegalStateException(e);
}
}