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Add Jackson date test

This commit is contained in:
DOHA 2014-12-26 20:52:23 +02:00
parent eedcbeb186
commit 713552cfce
13 changed files with 396 additions and 1 deletions
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6
jackson/pom.xml
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@ -45,6 +45,12 @@
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>

27
jackson/src/test/java/org/baeldung/jackson/date/CustomDateDeserializer.java Normal file
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@ -0,0 +1,27 @@
package org.baeldung.jackson.date;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
public class CustomDateDeserializer extends JsonDeserializer<Date> {
private static SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
@Override
public Date deserialize(final JsonParser jsonparser, final DeserializationContext context) throws IOException, JsonProcessingException {
final String date = jsonparser.getText();
try {
return formatter.parse(date);
} catch (final ParseException e) {
throw new RuntimeException(e);
}
}
}

20
jackson/src/test/java/org/baeldung/jackson/date/CustomDateSerializer.java Normal file
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@ -0,0 +1,20 @@
package org.baeldung.jackson.date;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
public class CustomDateSerializer extends JsonSerializer<Date> {
private static SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
@Override
public void serialize(final Date value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
gen.writeString(formatter.format(value));
}
}

22
jackson/src/test/java/org/baeldung/jackson/date/CustomDateTimeSerializer.java Normal file
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@ -0,0 +1,22 @@
package org.baeldung.jackson.date;
import java.io.IOException;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
public class CustomDateTimeSerializer extends JsonSerializer<DateTime> {
private static DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm");
@Override
public void serialize(final DateTime value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
gen.writeString(formatter.print(value));
}
}

20
jackson/src/test/java/org/baeldung/jackson/date/CustomLocalDateTimeSerializer.java Normal file
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@ -0,0 +1,20 @@
package org.baeldung.jackson.date;
import java.io.IOException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
public class CustomLocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
private static DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
@Override
public void serialize(final LocalDateTime value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
gen.writeString(formatter.format(value));
}
}

25
jackson/src/test/java/org/baeldung/jackson/date/Event.java Normal file
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@ -0,0 +1,25 @@
package org.baeldung.jackson.date;
import java.util.Date;
public class Event {
public String name;
public Date eventDate;
public Event() {
super();
}
public Event(final String name, final Date eventDate) {
this.name = name;
this.eventDate = eventDate;
}
public Date getEventDate() {
return eventDate;
}
public String getName() {
return name;
}
}

29
jackson/src/test/java/org/baeldung/jackson/date/EventWithFormat.java Normal file
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@ -0,0 +1,29 @@
package org.baeldung.jackson.date;
import java.util.Date;
import com.fasterxml.jackson.annotation.JsonFormat;
public class EventWithFormat {
public String name;
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy hh:mm:ss")
public Date eventDate;
public EventWithFormat() {
super();
}
public EventWithFormat(final String name, final Date eventDate) {
this.name = name;
this.eventDate = eventDate;
}
public Date getEventDate() {
return eventDate;
}
public String getName() {
return name;
}
}

29
jackson/src/test/java/org/baeldung/jackson/date/EventWithJodaTime.java Normal file
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@ -0,0 +1,29 @@
package org.baeldung.jackson.date;
import org.joda.time.DateTime;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
public class EventWithJodaTime {
public String name;
@JsonSerialize(using = CustomDateTimeSerializer.class)
public DateTime eventDate;
public EventWithJodaTime() {
super();
}
public EventWithJodaTime(final String name, final DateTime eventDate) {
this.name = name;
this.eventDate = eventDate;
}
public DateTime getEventDate() {
return eventDate;
}
public String getName() {
return name;
}
}

29
jackson/src/test/java/org/baeldung/jackson/date/EventWithLocalDateTime.java Normal file
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@ -0,0 +1,29 @@
package org.baeldung.jackson.date;
import java.time.LocalDateTime;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
public class EventWithLocalDateTime {
public String name;
@JsonSerialize(using = CustomLocalDateTimeSerializer.class)
public LocalDateTime eventDate;
public EventWithLocalDateTime() {
super();
}
public EventWithLocalDateTime(final String name, final LocalDateTime eventDate) {
this.name = name;
this.eventDate = eventDate;
}
public LocalDateTime getEventDate() {
return eventDate;
}
public String getName() {
return name;
}
}

31
jackson/src/test/java/org/baeldung/jackson/date/EventWithSerializer.java Normal file
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@ -0,0 +1,31 @@
package org.baeldung.jackson.date;
import java.util.Date;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
public class EventWithSerializer {
public String name;
@JsonDeserialize(using = CustomDateDeserializer.class)
@JsonSerialize(using = CustomDateSerializer.class)
public Date eventDate;
public EventWithSerializer() {
super();
}
public EventWithSerializer(final String name, final Date eventDate) {
this.name = name;
this.eventDate = eventDate;
}
public Date getEventDate() {
return eventDate;
}
public String getName() {
return name;
}
}

143
jackson/src/test/java/org/baeldung/jackson/test/JacksonDateTest.java Normal file
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@ -0,0 +1,143 @@
package org.baeldung.jackson.test;
import static org.hamcrest.Matchers.containsString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.util.Date;
import java.util.TimeZone;
import org.baeldung.jackson.date.Event;
import org.baeldung.jackson.date.EventWithFormat;
import org.baeldung.jackson.date.EventWithJodaTime;
import org.baeldung.jackson.date.EventWithLocalDateTime;
import org.baeldung.jackson.date.EventWithSerializer;
import org.joda.time.DateTime;
import org.junit.Test;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
public class JacksonDateTest {
@Test
public void whenSerializeDateWithJackson_thenSerializedToNumber() throws JsonProcessingException, ParseException {
final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm");
df.setTimeZone(TimeZone.getTimeZone("UTC"));
final String toParse = "01-01-1970 01:00";
final Date date = df.parse(toParse);
final Event event = new Event("party", date);
final ObjectMapper mapper = new ObjectMapper();
final String result = mapper.writeValueAsString(event);
assertThat(result, containsString("3600000"));
}
@Test
public void whenSerializeDateToISO8601_thenSerializedToText() throws JsonProcessingException, ParseException {
final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm");
df.setTimeZone(TimeZone.getTimeZone("UTC"));
final String toParse = "01-01-1970 02:30";
final Date date = df.parse(toParse);
final Event event = new Event("party", date);
final ObjectMapper mapper = new ObjectMapper();
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
final String result = mapper.writeValueAsString(event);
assertThat(result, containsString("1970-01-01T02:30:00.000+0000"));
}
@Test
public void whenSetObjectMapperDateFormat_thenCorrect() throws JsonProcessingException, ParseException {
final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm");
final String toParse = "20-12-2014 02:30";
final Date date = df.parse(toParse);
final Event event = new Event("party", date);
final ObjectMapper mapper = new ObjectMapper();
mapper.setDateFormat(df);
final String result = mapper.writeValueAsString(event);
assertThat(result, containsString(toParse));
}
@Test
public void whenUseJsonFormatAnnotationToFormatDate_thenCorrect() throws JsonProcessingException, ParseException {
final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
df.setTimeZone(TimeZone.getTimeZone("UTC"));
final String toParse = "20-12-2014 02:30:00";
final Date date = df.parse(toParse);
final EventWithFormat event = new EventWithFormat("party", date);
final ObjectMapper mapper = new ObjectMapper();
final String result = mapper.writeValueAsString(event);
assertThat(result, containsString(toParse));
}
@Test
public void whenUseCustomDateSerializer_thenCorrect() throws JsonProcessingException, ParseException {
final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
final String toParse = "20-12-2014 02:30:00";
final Date date = df.parse(toParse);
final EventWithSerializer event = new EventWithSerializer("party", date);
final ObjectMapper mapper = new ObjectMapper();
final String result = mapper.writeValueAsString(event);
assertThat(result, containsString(toParse));
}
@Test
public void whenSerializeJodaTimeWithJackson_thenCorrect() throws JsonProcessingException {
final DateTime date = new DateTime(2014, 12, 20, 2, 30);
final EventWithJodaTime event = new EventWithJodaTime("party", date);
final ObjectMapper mapper = new ObjectMapper();
final String result = mapper.writeValueAsString(event);
assertThat(result, containsString("2014-12-20 02:30"));
}
@Test
public void whenSerializeJava8DateWithCustomSerializer_thenCorrect() throws JsonProcessingException {
final LocalDateTime date = LocalDateTime.of(2014, 12, 20, 2, 30);
final EventWithLocalDateTime event = new EventWithLocalDateTime("party", date);
final ObjectMapper mapper = new ObjectMapper();
final String result = mapper.writeValueAsString(event);
assertThat(result, containsString("2014-12-20 02:30"));
}
@Test
public void whenDeserializeDateWithJackson_thenCorrect() throws JsonProcessingException, IOException {
final String json = "{\"name\":\"party\",\"eventDate\":\"20-12-2014 02:30:00\"}";
final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
final ObjectMapper mapper = new ObjectMapper();
mapper.setDateFormat(df);
final Event event = mapper.reader(Event.class).readValue(json);
assertEquals("20-12-2014 02:30:00", df.format(event.eventDate));
}
@Test
public void whenDeserializeDateUsingCustomDeserializer_thenCorrect() throws JsonProcessingException, IOException {
final String json = "{\"name\":\"party\",\"eventDate\":\"20-12-2014 02:30:00\"}";
final SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
final ObjectMapper mapper = new ObjectMapper();
final EventWithSerializer event = mapper.reader(EventWithSerializer.class).readValue(json);
assertEquals("20-12-2014 02:30:00", df.format(event.eventDate));
}
}

9
spring-rest/src/main/java/org/baeldung/config/WebConfig.java
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@ -1,10 +1,12 @@
package org.baeldung.config;
import java.text.SimpleDateFormat;
import java.util.List;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.http.converter.xml.MarshallingHttpMessageConverter;
import org.springframework.oxm.xstream.XStreamMarshaller;
@ -25,7 +27,12 @@ public class WebConfig extends WebMvcConfigurerAdapter {
@Override
public void configureMessageConverters(final List<HttpMessageConverter<?>> messageConverters) {
messageConverters.add(createXmlHttpMessageConverter());
messageConverters.add(new MappingJackson2HttpMessageConverter());
// messageConverters.add(new MappingJackson2HttpMessageConverter());
final Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder();
builder.indentOutput(true).dateFormat(new SimpleDateFormat("dd-MM-yyyy hh:mm"));
messageConverters.add(new MappingJackson2HttpMessageConverter(builder.build()));
// messageConverters.add(new MappingJackson2XmlHttpMessageConverter(builder.createXmlMapper(true).build()));
super.configureMessageConverters(messageConverters);
}

7
spring-rest/src/main/java/org/baeldung/web/controller/ItemController.java
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@ -1,5 +1,7 @@
package org.baeldung.web.controller;
import java.util.Date;
import org.baeldung.web.dto.Item;
import org.baeldung.web.dto.ItemManager;
import org.baeldung.web.dto.Views;
@ -23,4 +25,9 @@ public class ItemController {
public Item getItemInternal(@PathVariable final int id) {
return ItemManager.getById(id);
}
@RequestMapping("/date")
public Date getCurrentDate() {
return new Date();
}
}