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custom jackson serialization

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This commit is contained in:
eugenp 2013-12-22 00:17:17 +02:00
parent ca5d33bb9a
commit 78abeaf838
1 changed files with 49 additions and 1 deletions
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50
jackson/src/test/java/org/baeldung/jackson/test/JacksonSerializationUnitTest.java
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@ -15,9 +15,14 @@ import org.baeldung.jackson.ignore.MyDtoWithFilter;
import org.baeldung.jackson.ignore.MyMixInForString; import org.baeldung.jackson.ignore.MyMixInForString;
import org.junit.Test; import org.junit.Test;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParseException; import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
import com.fasterxml.jackson.databind.ser.FilterProvider; import com.fasterxml.jackson.databind.ser.FilterProvider;
import com.fasterxml.jackson.databind.ser.PropertyFilter;
import com.fasterxml.jackson.databind.ser.PropertyWriter;
import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter; import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider; import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
import com.google.common.collect.Lists; import com.google.common.collect.Lists;
@ -88,7 +93,7 @@ public class JacksonSerializationUnitTest {
} }
@Test @Test
public final void givenTypeHasFilterThatIgnoresIntsOver10_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException { public final void givenTypeHasFilterThatIgnoresFieldByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final ObjectMapper mapper = new ObjectMapper(); final ObjectMapper mapper = new ObjectMapper();
final SimpleBeanPropertyFilter theFilter = SimpleBeanPropertyFilter.serializeAllExcept("intValue"); final SimpleBeanPropertyFilter theFilter = SimpleBeanPropertyFilter.serializeAllExcept("intValue");
final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter); final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
@ -104,6 +109,49 @@ public class JacksonSerializationUnitTest {
System.out.println(dtoAsString); System.out.println(dtoAsString);
} }
@Test
public final void givenTypeHasFilterThatIgnoresIntsOver10_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
final PropertyFilter theFilter = new SimpleBeanPropertyFilter() {
@Override
public final void serializeAsField(final Object pojo, final JsonGenerator jgen, final SerializerProvider provider, final PropertyWriter writer) throws Exception {
if (include(writer)) {
if (writer.getName().equals("intValue")) {
final int intValue = ((MyDtoWithFilter) pojo).getIntValue();
if (intValue < 10) {
writer.serializeAsField(pojo, jgen, provider);
}
} else {
writer.serializeAsField(pojo, jgen, provider);
}
} else if (!jgen.canOmitFields()) { // since 2.3
writer.serializeAsOmittedField(pojo, jgen, provider);
}
}
@Override
protected final boolean include(final BeanPropertyWriter writer) {
return true;
}
@Override
protected final boolean include(final PropertyWriter writer) {
return true;
}
};
final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
dtoObject.setIntValue(12);
final ObjectMapper mapper = new ObjectMapper();
final String dtoAsString = mapper.writer(filters).writeValueAsString(dtoObject);
assertThat(dtoAsString, not(containsString("intValue")));
assertThat(dtoAsString, containsString("booleanValue"));
assertThat(dtoAsString, containsString("stringValue"));
System.out.println(dtoAsString);
}
// tests - multiple entities to json // tests - multiple entities to json
@Test @Test