Jackson Mapperがすべてのフィールドをマッピングしていません

Question

私はjacksonを使って私のPOJO配列をjsonに変換していますが、出力にgson.toJsonが出力を与える特定のフィールドを与えていません。いくつか助けてもらえますか？

public class TestCenter implements Comparable<TestCenter>{ 


    private Integer no_of_accessible_tests=0; 
    private Integer tagId; 
    private String tag; 
    private Integer number_of_tests=0; 

    private List<Test> tests= new ArrayList<>(); 

    public Integer getTagId() { 
     return tagId; 
    } 
    public void setTagId(Integer tagId) { 
     this.tagId = tagId; 
    } 
    public String getTag() { 
     return tag; 
    } 
    public void setTag(String tag) { 
     this.tag = tag; 
    } 
    public Integer getNumber_of_tests() { 
     return number_of_tests; 
    } 
    public void setNumber_of_tests(Integer number_of_tests) { 
     this.number_of_tests = number_of_tests; 
    } 
    public List<Test> getTests() { 
     return tests; 
    } 
    public void setTests(List<Test> tests) { 
     this.tests = tests; 
    } 

    public void addTest(Test t) 
    { 

     this.tests.add(t); 
     this.number_of_tests++; 
     if("Yes".equals(t.getAccess())) 
      this.no_of_accessible_tests++; 
    } 
    @Override 
    public int compareTo(TestCenter o) { 

     if(this.no_of_accessible_tests.equals(o.no_of_accessible_tests)) 
     { 
      return number_of_tests.compareTo(o.number_of_tests); 
     } 
     else 
     { 
      return o.no_of_accessible_tests.compareTo(this.no_of_accessible_tests); 
     } 
    } 


} 

System.out.println(gson.toJson(tests)); 
      System.out.println(mapper.writeValueAsString(tests)); 
      return mapper.writeValueAsString(tests); 
output for both: 
[{"no_of_accessible_tests":0,"tagId":196,"tag":"IBPS Clerical Prelims","number_of_tests":1,"tests":[{"activatedDate":null,"activatedTime":null,"ScheduleDate":null,"ScheduleTime":null,"endDate":null,"endTime":null,"testId":2193,"testCode":"P15 CP FLT 61","testName":"Amazon -4","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"start","testResult":null,"tags":["2017","IBPS Clerical Prelims"]}]},{"no_of_accessible_tests":0,"tagId":0,"tag":"Others","number_of_tests":6,"tests":[{"activatedDate":null,"activatedTime":null,"ScheduleDate":null,"ScheduleTime":null,"endDate":null,"endTime":null,"testId":2525,"testCode":"CP 16 FLT 04","testName":"Tech Mahindra -4","testType":"flt","testPattern":"ibps","testDurationInMinutes":65,"numberOfQuestions":76,"access":"No","status":"start","testResult":null,"tags":null},{"activatedDate":"2015-12-17","activatedTime":"09:00:00","ScheduleDate":"2015-12-17","ScheduleTime":"09:00:00","endDate":"license end date","endTime":"license end time","testId":2188,"testCode":"P15 CP FLT 58","testName":"Amazon -1","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"Resume","testResult":null,"tags":null},{"activatedDate":"2015-12-17","activatedTime":"09:00:00","ScheduleDate":"2015-12-17","ScheduleTime":"09:00:00","endDate":"license end date","endTime":"license end time","testId":2190,"testCode":"P15 CP FLT 59","testName":"Amazon -2","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"start","testResult":null,"tags":null},{"activatedDate":null,"activatedTime":null,"ScheduleDate":null,"ScheduleTime":null,"endDate":null,"endTime":null,"testId":2192,"testCode":"P15 CP FLT 60","testName":"Amazon -3","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"start","testResult":null,"tags":null},{"activatedDate":null,"activatedTime":null,"ScheduleDate":null,"ScheduleTime":null,"endDate":null,"endTime":null,"testId":1929,"testCode":"P15 CP FLT 09","testName":"CapGemini -1","testType":"flt","testPattern":"ibps","testDurationInMinutes":60,"numberOfQuestions":75,"access":"No","status":"start","testResult":null,"tags":null},{"test_ready":"no","reason_student_side":"This test would be available on 22-Dec-16.","reason_admin_side":".","testId":2633,"testCode":"BP FLT 87","testName":"SBI Specialist Officer Test -5","testType":"flt","testPattern":"ibps","testDurationInMinutes":90,"numberOfQuestions":120,"access":"No","status":"start","testResult":null,"tags":null}]}] 
[{"tagId":196,"tag":"IBPS Clerical Prelims","number_of_tests":1,"tests":[{"testId":2193,"testCode":"P15 CP FLT 61","testName":"Amazon -4","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"start","testResult":null,"tags":["2017","IBPS Clerical Prelims"],"activatedDate":null,"activatedTime":null,"endDate":null,"endTime":null,"scheduleDate":null,"scheduleTime":null}]},{"tagId":0,"tag":"Others","number_of_tests":6,"tests":[{"testId":2525,"testCode":"CP 16 FLT 04","testName":"Tech Mahindra -4","testType":"flt","testPattern":"ibps","testDurationInMinutes":65,"numberOfQuestions":76,"access":"No","status":"start","testResult":null,"tags":null,"activatedDate":null,"activatedTime":null,"endDate":null,"endTime":null,"scheduleDate":null,"scheduleTime":null},{"testId":2188,"testCode":"P15 CP FLT 58","testName":"Amazon -1","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"Resume","testResult":null,"tags":null,"activatedDate":"2015-12-17","activatedTime":"09:00:00","endDate":"license end date","endTime":"license end time","scheduleDate":"2015-12-17","scheduleTime":"09:00:00"},{"testId":2190,"testCode":"P15 CP FLT 59","testName":"Amazon -2","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"start","testResult":null,"tags":null,"activatedDate":"2015-12-17","activatedTime":"09:00:00","endDate":"license end date","endTime":"license end time","scheduleDate":"2015-12-17","scheduleTime":"09:00:00"},{"testId":2192,"testCode":"P15 CP FLT 60","testName":"Amazon -3","testType":"flt","testPattern":"ibps","testDurationInMinutes":120,"numberOfQuestions":104,"access":"No","status":"start","testResult":null,"tags":null,"activatedDate":null,"activatedTime":null,"endDate":null,"endTime":null,"scheduleDate":null,"scheduleTime":null},{"testId":1929,"testCode":"P15 CP FLT 09","testName":"CapGemini -1","testType":"flt","testPattern":"ibps","testDurationInMinutes":60,"numberOfQuestions":75,"access":"No","status":"start","testResult":null,"tags":null,"activatedDate":null,"activatedTime":null,"endDate":null,"endTime":null,"scheduleDate":null,"scheduleTime":null},{"testId":2633,"testCode":"BP FLT 87","testName":"SBI Specialist Officer Test -5","testType":"flt","testPattern":"ibps","testDurationInMinutes":90,"numberOfQuestions":120,"access":"No","status":"start","testResult":null,"tags":null,"test_ready":"no","reason_student_side":"This test would be available on 22-Dec-16.","reason_admin_side":"."}]}] 

それは出力にno_of_accessible_testsに@Scaryウォンバットに

Answer 1

おかげでフィールドを与えていません。 そのフィールドにゲッター/セッターがないという問題があると思われます。