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HarmonyOS
我有一个jsp文件如下，我用这个jsp文件来储存用户输入的Stock信息。每一个input，我都用spring form tag绑定这个对象／bean的某个属性。
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>add Stock</h1>
<form:form action="addStock" modelAttribute="stock" method="POST">
<table>
<tbody>
<tr>
<td><label>Base Rate Of Return:</label></td>
<td><form:input path="baseRateOfReturn" /></td>
</tr>
<tr>
<td><label>Asset Code:</label></td>
<td><form:input path="code" /></td>
</tr>
<tr>
<td><label>Asset Label:</label></td>
<td><form:input path="label" /></td>
</tr>
<tr>
<td><label>Quarterly Dividend:</label></td>
<td><form:input path="quarterlyDividend" /></td>
</tr>
<tr>
<td><label>Price:</label></td>
<td><form:input path="sharePrice" /></td>
</tr>
<tr>
<td><label>Beta:</label></td>
<td><form:input path="beta" /></td>
</tr>
<tr>
<td><label></label></td>
<td><input type="submit" value="Save"/></td>
</tr>
</tbody>
</table>
</form:form>
</body>
</html>现在我却遇到一个exception。这个异常的关键信息如下。
Invalid property 'code' of bean class [pojo.Stock]: Bean property 'code' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?我返回去看我的Stock class，发现这个class确实没有定义code的getter和setter method。如下：
package pojo;
public class Stock extends Investment {
private Double sharePrice;
private Double beta;// risk measurement beta
public Stock() {
}
public Stock(String code, String label, Double quarterlyDividend, Double baseRateOfReturn, Double sharePrice,
Double beta) {
super(code, label, quarterlyDividend, baseRateOfReturn);
this.sharePrice = sharePrice;
this.beta = beta;
}
public Double getSharePrice() {
return sharePrice;
}
public void setSharePrice(Double sharePrice) {
this.sharePrice = sharePrice;
}
public Double getBeta() {
return beta;
}
public void setBeta(Double beta) {
this.beta = beta;
}
@Override
public String accountType() {
return "S";
}
@Override
public Double riskMeasure() {
return Math.round(100 * beta) / 100d;
}
}关键在于，Stock是Investment的子类，code的getter和setter方法既然已经在Investment定义了，就不应该还在子类Stock重写。
那么在不重写getCode和setCode方法的前提下，如何可以解决这个异常呢？
下面是父类Investment及其父类Asset的pojo class。
package pojo;
public abstract class Investment extends Asset {
private Double quarterlyDividend;
private Double baseRateOfReturn;
public Investment() {
}
public Investment(String code, String label, Double quarterlyDividend, Double baseRateOfReturn) {
super(code, label);
this.quarterlyDividend = quarterlyDividend;
this.baseRateOfReturn = baseRateOfReturn;
}
public Double getQuarterlyDividend() {
return quarterlyDividend;
}
public void setQuarterlyDividend(Double quarterlyDividend) {
this.quarterlyDividend = quarterlyDividend;
}
public Double getBaseRateOfReturn() {
return baseRateOfReturn;
}
public void setBaseRateOfReturn(Double baseRateOfReturn) {
this.baseRateOfReturn = baseRateOfReturn;
}
public abstract Double riskMeasure();
public abstract String accountType();
}package pojo;
public abstract class Asset {
private Integer assetId;
private String code;
private String label;
public Asset() {
}
public Asset(String code, String label) {
this.code = code;
this.label = label;
}
public abstract Double riskMeasure();
public abstract String accountType();
public Integer getAssetId() {
return assetId;
}
public void setAssetId(Integer assetId) {
this.assetId = assetId;
}
protected String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getLabel() {
return label;
}
public void setLabel(String label) {
this.label = label;
}
}
java