further jackson examples

jackson/src/test/java/org/baeldung/jackson/MyBooleanMixIn.java

@@ -0,0 +1,8 @@
+package org.baeldung.jackson;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreType;
+
+@JsonIgnoreType
+public class MyBooleanMixIn {
+    //
+}

jackson/src/test/java/org/baeldung/jackson/MyDtoIgnoreFieldByName.java

@@ -3,13 +3,13 @@ package org.baeldung.jackson;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
 @JsonIgnoreProperties(value = { "intValue" })
-public class BarDto {
+public class MyDtoIgnoreFieldByName {
 
     private String stringValue;
     private int intValue;
     private boolean booleanValue;
 
-    public BarDto() {
+    public MyDtoIgnoreFieldByName() {
         super();
     }
 

jackson/src/test/java/org/baeldung/jackson/MyDtoIgnoreType.java

@@ -0,0 +1,50 @@
+package org.baeldung.jackson;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class MyDtoIgnoreType {
+
+    private String stringValue;
+    private int intValue;
+    private boolean booleanValue;
+
+    public MyDtoIgnoreType() {
+        super();
+    }
+
+    public MyDtoIgnoreType(final String stringValue, final int intValue, final boolean booleanValue) {
+        super();
+
+        this.stringValue = stringValue;
+        this.intValue = intValue;
+        this.booleanValue = booleanValue;
+    }
+
+    // API
+
+    public String getStringValue() {
+        return stringValue;
+    }
+
+    public void setStringValue(final String stringValue) {
+        this.stringValue = stringValue;
+    }
+
+    public int getIntValue() {
+        return intValue;
+    }
+
+    public void setIntValue(final int intValue) {
+        this.intValue = intValue;
+    }
+
+    public boolean isBooleanValue() {
+        return booleanValue;
+    }
+
+    public void setBooleanValue(final boolean booleanValue) {
+        this.booleanValue = booleanValue;
+    }
+
+}

jackson/src/test/java/org/baeldung/jackson/MyDtoIncludeNonDefault.java

@@ -4,13 +4,13 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonInclude.Include;
 
 @JsonInclude(Include.NON_DEFAULT)
-public class FooDto {
+public class MyDtoIncludeNonDefault {
 
     private String stringValue;
     private int intValue;
     private boolean booleanValue;
 
-    public FooDto() {
+    public MyDtoIncludeNonDefault() {
         super();
     }
 

jackson/src/test/java/org/baeldung/jackson/test/JacksonDeserializationUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung.jackson;
+package org.baeldung.jackson.test;
 
 import static org.hamcrest.Matchers.equalTo;
 import static org.junit.Assert.assertNotNull;
@@ -6,6 +6,8 @@ import static org.junit.Assert.assertThat;
 
 import java.io.IOException;
 
+import org.baeldung.jackson.MyDto;
+import org.baeldung.jackson.MyDtoIgnoreUnkown;
 import org.junit.Test;
 
 import com.fasterxml.jackson.core.JsonParseException;

jackson/src/test/java/org/baeldung/jackson/test/JacksonSerializationUnitTest.java

@@ -1,4 +1,4 @@
-package org.baeldung.jackson;
+package org.baeldung.jackson.test;
 
 import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.not;
@@ -7,6 +7,10 @@ import static org.junit.Assert.assertThat;
 import java.io.IOException;
 import java.util.List;
 
+import org.baeldung.jackson.MyBooleanMixIn;
+import org.baeldung.jackson.MyDto;
+import org.baeldung.jackson.MyDtoIgnoreFieldByName;
+import org.baeldung.jackson.MyDtoIncludeNonDefault;
 import org.junit.Test;
 
 import com.fasterxml.jackson.core.JsonParseException;
@@ -20,7 +24,7 @@ public class JacksonSerializationUnitTest {
     @Test
     public final void givenOnlyNonDefaultValuesAreSerialized_whenDtoHasOnlyDefaultValues_thenCorrect() throws JsonParseException, IOException {
         final ObjectMapper mapper = new ObjectMapper();
-        final String dtoAsString = mapper.writeValueAsString(new FooDto());
+        final String dtoAsString = mapper.writeValueAsString(new MyDtoIncludeNonDefault());
 
         assertThat(dtoAsString, not(containsString("intValue")));
         System.out.println(dtoAsString);
@@ -29,7 +33,7 @@ public class JacksonSerializationUnitTest {
     @Test
     public final void givenOnlyNonDefaultValuesAreSerialized_whenDtoHasNonDefaultValue_thenCorrect() throws JsonParseException, IOException {
         final ObjectMapper mapper = new ObjectMapper();
-        final FooDto dtoObject = new FooDto();
+        final MyDtoIncludeNonDefault dtoObject = new MyDtoIncludeNonDefault();
         dtoObject.setBooleanValue(true);
 
         final String dtoAsString = mapper.writeValueAsString(dtoObject);
@@ -41,7 +45,7 @@ public class JacksonSerializationUnitTest {
     @Test
     public final void givenFieldIsIgnored_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
         final ObjectMapper mapper = new ObjectMapper();
-        final BarDto dtoObject = new BarDto();
+        final MyDtoIgnoreFieldByName dtoObject = new MyDtoIgnoreFieldByName();
         dtoObject.setBooleanValue(true);
 
         final String dtoAsString = mapper.writeValueAsString(dtoObject);
@@ -51,6 +55,21 @@ public class JacksonSerializationUnitTest {
         System.out.println(dtoAsString);
     }
 
+    @Test
+    public final void givenFieldTypeIsIgnored_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
+        final ObjectMapper mapper = new ObjectMapper();
+        mapper.addMixInAnnotations(String.class, MyBooleanMixIn.class);
+        final MyDto dtoObject = new MyDto();
+        dtoObject.setBooleanValue(true);
+
+        final String dtoAsString = mapper.writeValueAsString(dtoObject);
+
+        assertThat(dtoAsString, containsString("intValue"));
+        assertThat(dtoAsString, containsString("booleanValue"));
+        assertThat(dtoAsString, not(containsString("stringValue")));
+        System.out.println(dtoAsString);
+    }
+
     // tests - multiple entities to json
 
     @Test