Android Studio：如何使用Spring-Resttemplate获取带有Object列表的Object

Question

我不得不承认，我需要一些帮助。 我只有3周的Rest经验，2周的Grails经验和1周的Android Studio经验，所以我希望你不会对我太过刻苦。 我从grails服务器获取这个Json：

{"class":"medicserver.Medication",
"id":1,"dateOfPrescription":"2015-09-19T08:12:34Z",
"description":"Meds",
"medicationUnit":[{"class":"medicserver.MedicationUnit","id":1},{"class":"medicserver.MedicationUnit","id":2},{"class":"medicserver.MedicationUnit","id":3}],
"patient":null}

你看，属性“drugUnit”是一个MedicationUnit列表，这是我的ResponseObject创建时唯一没有的东西。我根本得不到它。 这是Rest-Code：

RestTemplate restTemplate = new RestTemplate();
            MappingJackson2HttpMessageConverter mapping = new MappingJackson2HttpMessageConverter();
            mapping.setObjectMapper(new ObjectMapper());
            restTemplate.getMessageConverters().add(mapping);
            Medication medication = restTemplate.getForObject(url , Medication.class);
            return medication;

My Classes - plaese忽略静态类型。这是为了实现内部类：

@JsonIgnoreProperties(ignoreUnknown = true)
    static class Medication{

        String description;

        MedicationUnit[] medicationUnit;

        Date dateOfPrescription;


        public Medication(){

        }

        public void setDescription(String description){
            this.description = description;
        }

        public String getDescription(){
            return this.description;
        }

        public void setMedicationUnit(MedicationUnit[] medicationUnit){
            this.medicationUnit = medicationUnit;
        }

        public MedicationUnit[] getMedicationUnit(){
            return this.medicationUnit;
        }

        public void setDateOfPrescription(Date dateOfPrescription){
            this.dateOfPrescription = dateOfPrescription;
        }

        public Date getDateOfPrescription(){
            return this.dateOfPrescription;
        }

        public String postAll(){
            String result = this.description + "\n" + String.valueOf(this.dateOfPrescription) + "\n";
            for(MedicationUnit med: this.medicationUnit){
                result = result + med.postAll();
            }
            return result;
        }

    }

MedicationUnit：

@JsonIgnoreProperties(ignoreUnknown = true)
static class MedicationUnit {

    String name="Hans";

    Date intakeTime=new Date(0);

    int dosage=3;


    public MedicationUnit(){
    }

    public void setName(String name){
        this.name=name;
    }

    public String getName(){
        return this.name;
    }

    public void setIntakeTime(Date intakeTime){
        this.intakeTime=intakeTime;
    }

    public Date getIntakeTime(){
        return this.intakeTime;
    }

    public void setDosage(int dosage){
        this.dosage=dosage;
    }

    public int getDosage(){
        return this.dosage;
    }

    private String postAll(){
        String result;
        result = this.name + " " + String.valueOf(this.intakeTime) + " " + String.valueOf(dosage) + "\n";
        return result;
    }

}