我有一個名爲Experiment的bean,它具有一個屬性,該屬性是稱爲Assay的類型的beans的數組列表。jstl - forEach,將bean列表作爲屬性的bean
在JSP我想遍歷存儲在一個實驗豆試驗的名單,我嘗試這樣做:
<c:forEach items="${exp.assays}" var="ay">
<tr><td>${ay.decision}</td><td>${ay.comment}</td></tr>
</c:forEach>
試驗的
「descision」和「評論」的性質豆。
但這不起作用。我得到的錯誤:
SEVERE: javax.el.PropertyNotFoundException: The class 'beans.Experiment' does not have the property 'decision'.
彷彿項目在「exp.assays名單豆型實驗的地方,而不是分析的,因爲我期望的那樣。
所以,我想訪問實驗性質(EID,我知道我可以直接寫入$ {} exp.eid訪問)在foreach循環,而不是像這樣:
<c:forEach items="${exp.assays}" var="ay">
<tr><td>${ay.eid}</td></tr>
</c:forEach>
,但後來我錯誤消息:
SEVERE: javax.el.PropertyNotFoundException: The class 'beans.Assay' does not have the property 'eid'.
任何人知道正在發生什麼或我該如何修復它?
完整的bean代碼是很長,但這裏是我認爲部分都與此有關
實驗:
public class Experiment extends dataItem implements Serializable {
private String eid;
private List<Assay> assays = new ArrayList();
public String getEid() {
return eid;
}
public void setEid(String id) {
eid = id;
}
public List<Assay> getAssays() {
return assays;
}
public void setAssays(List<Assay> assays) {
this.assays = assays;
}
}
和分析:
public class Assay extends dataItem implements Serializable {
private Integer id;
private stock antigen;
private String decision;
private String comment;
private String freeAb;
private List<AssayData> data;
private List<conjugate> conjugates = new ArrayList();
public List<conjugate> getConjugates() {
return conjugates;
}
public void setConjugates(List<conjugate> conjugates) {
this.conjugates = conjugates;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public stock getAntigen() {
return antigen;
}
public void setAntigen(String id) {
stock s = new stock();
s.setSID(id);
this.antigen = s;
}
public String getDecision() {
return decision;
}
public void setDecision(String decision) {
this.decision = decision;
}
public String getComment() {
return comment;
}
public void setComment(String comment) {
this.comment = comment;
}
public String getFreeAb() {
return freeAb;
}
public void setFreeAb(String freeAb) {
this.freeAb = freeAb;
}
public List<AssayData> getData() {
return data;
}
public void setData(List<AssayData> data) {
this.data = data;
}
}
你會發布豆的代碼?吸氣劑是否正確定義? – Alex
我已經添加了代碼。我一直在看吸氣劑,但我看不出他們有什麼問題。 – numfar
我同意getters很好。你會發布JSP嗎?您是否包含了taglibs <%@ taglib uri =「http://java.sun.com/jsp/jstl/core」prefix =「c」%>並導入了實驗類<%@ page import =「com。taglibs.Experiment「%>? – Alex