[英]javax.servlet.jsp.JspException: No getter method available for property
[英]No getter method for property - JSP Exception
在我的Struts-config.xml
文件中,
<action path="/getTareWeight"
type="com.astrazeneca.usbod.scale.actions.GetTareByBarcodeAction"
name ="getTareByBarcodeForm"
scope="request"
validate="true"
input="/jsp/getTareByBarcode.jsp">
<forward name="success" path="/jsp/tareWeightResult.jsp" />
</action>
在擴展ActionForm
的GetTareByBarcodeForm
,存在以下getter和setter方法,
public String getBarcodeString() {
return (this.barcodeString);
}
public void setBarcodeString(String barcodeString) {
this.barcodeString = barcodeString;
}
public String getResult() {
return (this.result);
}
public void setResult(String result) {
this.result = result;
}
在GetTareByBarcodeAction.java
文件中,
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException{
String target = new String("success");
double tareWeight=0;
String tw = new String("");
GetTareByBarcodeForm gForm = (GetTareByBarcodeForm)form;
String errorString;
StringTokenizer t = new StringTokenizer(gForm.getBarcodeString(),
" \t\n\r\f:,;.");
List barcodeList = new ArrayList();
List tareWeightList = new ArrayList();
while (t.hasMoreTokens()) {
barcodeList.add(t.nextToken().trim());
}
int size = barcodeList.size();
VesselProcessor vproc = VesselProcessor.getInstance();
for(int i=0;i<size;i++)
{
tareWeight = vproc.checkTares((String) barcodeList.get(i));
tw=Double.toString(tareWeight);
tareWeightList.add(barcodeList.get(i));
tareWeightList.add(tw);
String temp = barcodeList.get(i).toString();
gForm.setBarcodeString(temp);
gForm.setResult(tw);
}
request.setAttribute("TAREWEIGHT", tareWeightList);
return (mapping.findForward(target));
}
在tareWeightResult.jsp
文件中,我以表格格式打印屬性TAREWEIGHT中的值。
<logic:present name="TAREWEIGHT">
<logic:iterate id="result" name="TAREWEIGHT">
<tr>
<td>
<bean:write name="result" property="barcodeString"/>
</td>
<td>
<bean:write name="result" property="result"/>
</td>
</tr>
</logic:iterate>
</logic:present>
在將其部署到weblogic服務器中后嘗試運行此功能時,日志中出現以下錯誤。
javax.servlet.jsp.JspException: No getter method for property barcodeString of bean result
at org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:968)
at org.apache.struts.taglib.bean.WriteTag.doStartTag(WriteTag.java:286)
at jsp_servlet._jsp.__tareweightresult._jsp__tag2(__tareweightresult.java:237)
at jsp_servlet._jsp.__tareweightresult._jspService(__tareweightresult.java:174)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
有人可以告訴我在這種情況下哪里出了問題嗎?
據我可以從你的代碼中看到,有沒有GetTareByBarcodeForm
的情況下tareWeightList
:后者包含String
S,所以當bean:write
嘗試提取屬性,它不能: String
沒有這樣一個getter。
也許您應該重新訪問提取值的邏輯,並將結果包裝在適當的實例中。
因此,您的代碼應類似於以下內容:
for (int i = 0; i < size; i++) {
tareWeight = vproc.checkTares((String) barcodeList.get(i));
tw = Double.toString(tareWeight);
String temp = barcodeList.get(i).toString();
GetTareByBarcodeForm f = new GetTareByBarcodeForm();
f.setBarcodeString(temp);
f.setResult(tw);
tareWeightList.add(f);
}
這樣您作為TAREWEIGHT
傳遞的結果列表將包含適當的對象。
不過,這還不太好:現在, GetTareByBarcodeForm
扮演兩個角色,即實際表單和搜索結果條目。 因此,我強烈建議您引入一個新類TareTableEntry
,並且僅在其中包含表詳細信息:
for (int i = 0; i < size; i++) {
tareWeight = vproc.checkTares((String) barcodeList.get(i));
TareTableEntry entry = new TareTableEntry();
entry.setBarcodeString(barcodeList.get(i));
entry.setResult(tareWeight);
tareWeightList.add(entry);
}
那是更多的代碼,但從長遠來看會有所回報。
具有“結果”的id由TAREWEIGHT表示。 此對象是否具有barCodeString屬性? 在我看來,其中的Bean名稱存在問題
<bean:write>.
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