Convert composite java object to CSV with Jackson
2
With Jackson, I need to convert an instance of my class Test in CSV but I'm getting problems with a class that contains one list (Inner)
Ex:
public class Test {
String testName;
@JsonUnwrapped
Simple simple;
@JsonUnwrapped
Inner inner;
public Test(String testName, Simple simple, Inner inner) {
this.testName = testName;
this.simple = simple;
this.inner = inner;
}
public String getTestName() {
return testName;
}
public void setTestName(String testName) {
this.testName = testName;
}
public Simple getSimple() {
return simple;
}
public void setSimple(Simple simple) {
this.simple = simple;
}
public Inner getInner() {
return inner;
}
public void setInner(Inner inner) {
this.inner = inner;
}
}
class Inner {
@JsonUnwrapped
List<Person> persons;
public Inner(List<Person> persons) {
this.persons = persons;
}
public List<Person> getPersons() {
return persons;
}
public void setPersons(List<Person> persons) {
this.persons = persons;
}
}
class Person {
String name;
public Person(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
class Simple {
String simpleName;
public Simple(String simpleName) {
this.simpleName = simpleName;
}
public String getSimpleName() {
return simpleName;
}
public void setSimpleName(String simpleName) {
this.simpleName = simpleName;
}
}
class Main {
public static void main(String args) {
Simple simple = new Simple("simple");
Person person = new Person("jesus");
Inner inner = new Inner(Arrays.asList(person));
Test test = new Test("test", simple, inner);
CsvMapper mapper = new CsvMapper();
CsvSchema schema = mapper.schemaFor(Test.class);
try {
String csv = mapper.writer(schema).writeValueAsString(test);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
}
For objects properties, I used the annotation @JsonUnwrapped as recommended on this link ,
but I get one exception when jackson try to convert the list Inner.persons:
How can I fix that ?
java csv jackson
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
add a comment |
2
With Jackson, I need to convert an instance of my class Test in CSV but I'm getting problems with a class that contains one list (Inner)
Ex:
public class Test {
String testName;
@JsonUnwrapped
Simple simple;
@JsonUnwrapped
Inner inner;
public Test(String testName, Simple simple, Inner inner) {
this.testName = testName;
this.simple = simple;
this.inner = inner;
}
public String getTestName() {
return testName;
}
public void setTestName(String testName) {
this.testName = testName;
}
public Simple getSimple() {
return simple;
}
public void setSimple(Simple simple) {
this.simple = simple;
}
public Inner getInner() {
return inner;
}
public void setInner(Inner inner) {
this.inner = inner;
}
}
class Inner {
@JsonUnwrapped
List<Person> persons;
public Inner(List<Person> persons) {
this.persons = persons;
}
public List<Person> getPersons() {
return persons;
}
public void setPersons(List<Person> persons) {
this.persons = persons;
}
}
class Person {
String name;
public Person(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
class Simple {
String simpleName;
public Simple(String simpleName) {
this.simpleName = simpleName;
}
public String getSimpleName() {
return simpleName;
}
public void setSimpleName(String simpleName) {
this.simpleName = simpleName;
}
}
class Main {
public static void main(String args) {
Simple simple = new Simple("simple");
Person person = new Person("jesus");
Inner inner = new Inner(Arrays.asList(person));
Test test = new Test("test", simple, inner);
CsvMapper mapper = new CsvMapper();
CsvSchema schema = mapper.schemaFor(Test.class);
try {
String csv = mapper.writer(schema).writeValueAsString(test);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
}
For objects properties, I used the annotation @JsonUnwrapped as recommended on this link ,
but I get one exception when jackson try to convert the list Inner.persons:
How can I fix that ?
java csv jackson
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
The docs (fasterxml.github.io/jackson-annotations/javadoc/2.0.0/com/…) says "can not unwrap JSON arrays using this mechanism"
– Perdi Estaquel
Nov 23 '18 at 0:40
add a comment |
2
2
2
With Jackson, I need to convert an instance of my class Test in CSV but I'm getting problems with a class that contains one list (Inner)
Ex:
public class Test {
String testName;
@JsonUnwrapped
Simple simple;
@JsonUnwrapped
Inner inner;
public Test(String testName, Simple simple, Inner inner) {
this.testName = testName;
this.simple = simple;
this.inner = inner;
}
public String getTestName() {
return testName;
}
public void setTestName(String testName) {
this.testName = testName;
}
public Simple getSimple() {
return simple;
}
public void setSimple(Simple simple) {
this.simple = simple;
}
public Inner getInner() {
return inner;
}
public void setInner(Inner inner) {
this.inner = inner;
}
}
class Inner {
@JsonUnwrapped
List<Person> persons;
public Inner(List<Person> persons) {
this.persons = persons;
}
public List<Person> getPersons() {
return persons;
}
public void setPersons(List<Person> persons) {
this.persons = persons;
}
}
class Person {
String name;
public Person(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
class Simple {
String simpleName;
public Simple(String simpleName) {
this.simpleName = simpleName;
}
public String getSimpleName() {
return simpleName;
}
public void setSimpleName(String simpleName) {
this.simpleName = simpleName;
}
}
class Main {
public static void main(String args) {
Simple simple = new Simple("simple");
Person person = new Person("jesus");
Inner inner = new Inner(Arrays.asList(person));
Test test = new Test("test", simple, inner);
CsvMapper mapper = new CsvMapper();
CsvSchema schema = mapper.schemaFor(Test.class);
try {
String csv = mapper.writer(schema).writeValueAsString(test);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
}
For objects properties, I used the annotation @JsonUnwrapped as recommended on this link ,
but I get one exception when jackson try to convert the list Inner.persons:
How can I fix that ?
java csv jackson
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
With Jackson, I need to convert an instance of my class Test in CSV but I'm getting problems with a class that contains one list (Inner)
Ex:
public class Test {
String testName;
@JsonUnwrapped
Simple simple;
@JsonUnwrapped
Inner inner;
public Test(String testName, Simple simple, Inner inner) {
this.testName = testName;
this.simple = simple;
this.inner = inner;
}
public String getTestName() {
return testName;
}
public void setTestName(String testName) {
this.testName = testName;
}
public Simple getSimple() {
return simple;
}
public void setSimple(Simple simple) {
this.simple = simple;
}
public Inner getInner() {
return inner;
}
public void setInner(Inner inner) {
this.inner = inner;
}
}
class Inner {
@JsonUnwrapped
List<Person> persons;
public Inner(List<Person> persons) {
this.persons = persons;
}
public List<Person> getPersons() {
return persons;
}
public void setPersons(List<Person> persons) {
this.persons = persons;
}
}
class Person {
String name;
public Person(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
class Simple {
String simpleName;
public Simple(String simpleName) {
this.simpleName = simpleName;
}
public String getSimpleName() {
return simpleName;
}
public void setSimpleName(String simpleName) {
this.simpleName = simpleName;
}
}
class Main {
public static void main(String args) {
Simple simple = new Simple("simple");
Person person = new Person("jesus");
Inner inner = new Inner(Arrays.asList(person));
Test test = new Test("test", simple, inner);
CsvMapper mapper = new CsvMapper();
CsvSchema schema = mapper.schemaFor(Test.class);
try {
String csv = mapper.writer(schema).writeValueAsString(test);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
}
For objects properties, I used the annotation @JsonUnwrapped as recommended on this link ,
but I get one exception when jackson try to convert the list Inner.persons:
How can I fix that ?
java csv jackson
java csv jackson
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
edited Nov 22 '18 at 23:13
Jesus Zavarce
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
asked Nov 22 '18 at 21:06
Jesus ZavarceJesus Zavarce
1,069819
1,069819
The docs (fasterxml.github.io/jackson-annotations/javadoc/2.0.0/com/…) says "can not unwrap JSON arrays using this mechanism"
– Perdi Estaquel
Nov 23 '18 at 0:40
add a comment |
The docs (fasterxml.github.io/jackson-annotations/javadoc/2.0.0/com/…) says "can not unwrap JSON arrays using this mechanism"
– Perdi Estaquel
Nov 23 '18 at 0:40
The docs (fasterxml.github.io/jackson-annotations/javadoc/2.0.0/com/…) says "can not unwrap JSON arrays using this mechanism"
– Perdi Estaquel
Nov 23 '18 at 0:40
The docs (fasterxml.github.io/jackson-annotations/javadoc/2.0.0/com/…) says "can not unwrap JSON arrays using this mechanism"
– Perdi Estaquel
Nov 23 '18 at 0:40
add a comment |
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The docs (fasterxml.github.io/jackson-annotations/javadoc/2.0.0/com/…) says "can not unwrap JSON arrays using this mechanism"
– Perdi Estaquel
Nov 23 '18 at 0:40