public static String toJson(Object value) {
try {
return OBJECT_MAPPER.writer().writeValueAsString(value);
} catch (JsonProcessingException e) {
throw new IllegalArgumentException("Unable to serialize to json", e);
}
}
public static byte[] toByteArray(Object value) {
try {
return OBJECT_MAPPER.writer().writeValueAsBytes(value);
} catch (JsonProcessingException e) {
throw new IllegalArgumentException("Unable to serialize to json", e);
}
}
public void testMapFilteringViaProps() throws Exception {
FilterProvider prov =
new SimpleFilterProvider()
.addFilter("filterX", SimpleBeanPropertyFilter.filterOutAllExcept("b"));
String json = MAPPER.writer(prov).writeValueAsString(new MapBean());
assertEquals(aposToQuotes("{'values':{'b':5}}"), json);
}
public void testMapFilteringViaClass() throws Exception {
FilteredBean bean = new FilteredBean();
bean.put("a", 4);
bean.put("b", 3);
FilterProvider prov =
new SimpleFilterProvider()
.addFilter("filterForMaps", SimpleBeanPropertyFilter.filterOutAllExcept("b"));
String json = MAPPER.writer(prov).writeValueAsString(bean);
assertEquals(aposToQuotes("{'b':3}"), json);
}
// [JACKSON-212]
public void testToStringEnum() throws Exception {
ObjectMapper m = new ObjectMapper();
m.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true);
assertEquals("\"b\"", m.writeValueAsString(LowerCaseEnum.B));
// [databind#749] but should also be able to dynamically disable
assertEquals(
"\"B\"",
m.writer()
.without(SerializationFeature.WRITE_ENUMS_USING_TO_STRING)
.writeValueAsString(LowerCaseEnum.B));
}
// [Issue#522]
public void testMapFilteringWithAnnotations() throws Exception {
FilterProvider prov = new SimpleFilterProvider().addFilter("filterX", new MyMapFilter());
String json = MAPPER.writer(prov).writeValueAsString(new MapBean());
// a=1 should become a=2
assertEquals(aposToQuotes("{'values':{'a':2}}"), json);
}