如何创建包含原始数据的java POJO类/Json字符串的映射？

我想做一个像这样的贴图（字符串，对象）

{AssessmentId=0，物理名=ram，物理身高=20，物理体重=60}

来自我的Pojo课程-初始评估

public class InitialAssessment  {

    private long AssessmentId;

    private String physical_name;

    private String physical_gender;

    private int physical_height;

    private float physical_weight;


// all getter And setter is Created here

}

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无需使用任何外部库，如Gson等。

您可以使用以下方法：

public Map getMapFromPojo(InitialAssessment assessment) throws Exception {
    Map<String, Object> map = new HashMap<>();

    if (assessment != null) {
        Method[] methods = assessment.getClass().getMethods();

        for (Method method : methods) {
            String name = method.getName();

            if (name.startsWith("get") && !name.equalsIgnoreCase("getClass")) {
                Object value = "";

                try {
                    value =  method.invoke(assessment);
                    map.put(name.substring(name.indexOf("get") + 3), value);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

        return map;
    }

    return null;
}

---

您可以使用以下方法：

public Map getMapFromPojo(InitialAssessment assessment) throws Exception {
    Map<String, Object> map = new HashMap<>();

    if (assessment != null) {
        Method[] methods = assessment.getClass().getMethods();

        for (Method method : methods) {
            String name = method.getName();

            if (name.startsWith("get") && !name.equalsIgnoreCase("getClass")) {
                Object value = "";

                try {
                    value =  method.invoke(assessment);
                    map.put(name.substring(name.indexOf("get") + 3), value);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

        return map;
    }

    return null;
}

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反射是一种方法反射是一种方法