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我正在尝试在 Spring MVC 中映射对象集合，但它给出的错误 Mapping of String 工作正常，但无法映射集合

org.springframework.beans.NotReadablePropertyException：bean 类 [com.medicine.yourmedics.model.FamilyHistoryForm] 的无效属性“familyHistory[0].relation”：字段“familyHistory[0].relation”不存在

我的 Jsp 文件看起来像

<form:form action="familyhistory" modelAttribute="familyhistoryform" method="POST" name="familyHistoryForm">
  <table id="tblData">
    <c:forEach items="${familyhistoryform.familyHistory}" varStatus="i">
        <form:input path="familyHistory[${i.index}].relation" type="text" id="relation${i.index}"/>
    </c:forEach>

familyhistoryform 是familyHistory 类的包装器。

public class FamilyHistoryForm {
public List<FamilyHistory> familyHistory = new LinkedList<FamilyHistory>();

public List<FamilyHistory> getFamilyHistory() {
    return familyHistory;
}

public void setFamilyHistory(List<FamilyHistory> familyHistory) {
    this.familyHistory = familyHistory;
}}

家族史pojo看起来像

public class FamilyHistory {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
@Column(name = "id", unique = true, nullable = false)
private int id;
private String relation;
public String getRelation() {
    return relation;
}

public void setRelation(String relation) {
    this.relation = relation;
}}

仅出于测试目的创建了一个控制器，该控制器返回家庭历史对象列表

@RequestMapping(method = RequestMethod.GET, value = "/familyhistory")
public String viewRegistration(Map<String, Object> model,
        HttpServletRequest request) {
    List<FamilyHistory> familyHistoryList = new LinkedList<FamilyHistory>();
    FamilyHistoryForm familyHistoryForm = new FamilyHistoryForm();

    familyHistoryList.add(new FamilyHistory());
    familyHistoryList.add(new FamilyHistory());
    familyHistoryList.add(new FamilyHistory());
    familyHistoryList.add(new FamilyHistory());
    familyHistoryForm.setFamilyHistory(familyHistoryList);
    model.put("familyhistoryform", familyHistoryForm);
    return "familyhistory";
}

如果在 jsp 中我将表单输入的路径写为，那么它将在输入文本中path="familyHistory"打印对象的字符串数组familyhistory

[com.medicine.yourmedics.model.FamilyHistory@472c6818, com.medicine.yourmedics.model.FamilyHistory@34662429, com.medicine.yourmedics.model.FamilyHistory@1dd01a9f, com.medicine.yourmedics.model.FamilyHistory@4983cc03]

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