我正在尝试基于数据库中的特定字段进行搜索（选择语句），但是我有一个例外：
java.sql.SQLException: Invalid column index.
public List<SearchResultDto> search(SearchDto searchDto) {
Connection connection = null;
PreparedStatement preparedStatement = null;
ResultSet searchResultSet = null;
try {
connection = getConnection();
preparedStatement = connection.prepareStatement(
"SELECT I_ID, I_NO, I_TITLE, I_DESCRIPTION, I_CREATED_DATE, STATUS.S_DESCRIPTION, APPL_USER.U_NAME FROM IDEA IDEA, STATUS STATUS, APPL_USER APPL_USER WHERE IDEA.I_STATUS_CODE = STATUS.S_CODE AND IDEA.I_CREATED_USER_ID = APPL_USER.U_SEQ AND IDEA.I_NO = ? OR IDEA.I_TITLE LIKE '%?%' OR TRUNC(IDEA.I_CREATED_DATE)= ? OR STATUS.S_CODE = ? ");
// Assign first value to first parameter
preparedStatement.setLong(1, searchDto.getIdeaNo());
preparedStatement.setString(2, searchDto.getIdeaTitle());
preparedStatement.setDate(3, searchDto.getCreatedDate() == null ? null
: new java.sql.Date(searchDto.getCreatedDate().getTime()));
preparedStatement.setObject(4, searchDto.getIdeaStatus());
searchResultSet = preparedStatement.executeQuery();
return search(searchResultSet);
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
try {
if (searchResultSet != null) {
searchResultSet.close();
}
preparedStatement.close();
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
}
private List<SearchResultDto> search(ResultSet searchResultSet) throws SQLException {
List<SearchResultDto> result = new ArrayList<SearchResultDto>();
SearchResultDto searchResultDto = null;
while (searchResultSet.next()) {
ideaSearchResultDto = new SearchResultDto();
searchResultDto.setIdeaId(searchResultSet.getLong(1));
searchResultDto.setIdeaNo(searchResultSet.getLong(2));
searchResultDto.setTitle(searchResultSet.getString(3));
searchResultDto.setDescription(searchResultSet.getString(4));
searchResultDto.setCreatedDate(searchResultSet.getDate(5));
searchResultDto.setStatusDescription(searchResultSet.getString(6));
searchResultDto.setIdeaCreator(searchResultSet.getString(7));
result.add(searchResultDto);
}
return result;
}
这是我的jsf文件：
<table>
<tr>
<td>
<table>
<tr>
<td width="70px"><h:outputText value="No"></h:outputText>
</td>
<td width="5px"> </td>
<td><h:inputText
maxlength="10" style="width:150px"
value="#{searchBean.searchDto.no}"></h:inputText>
</td>
<td width="50px"> </td>
<td width="70px"><h:outputText value="status"></h:outputText>
</td>
<td width="5px"> </td>
<td><h:selectOneMenu
value="#{searchBean.searchDto.status}"
style="width:150px">
<f:selectItems value="#{searchBean.statuses}" />
</h:selectOneMenu></td>
</tr>
</table>
</td>
</tr>
<tr>
<td>
<table>
<tr>
<td width="70px"><h:outputText value="Title"></h:outputText>
</td>
<td width="5px"> </td>
<td><h:inputText maxlength="100"
value="#{searchsBean.searchDto.Title}"
style="width:150px"></h:inputText></td>
<td width="50px"> </td>
<td width="70px"><h:outputText value="created Date"></h:outputText>
</td>
<td width="5px"> </td>
<td><rich:calendar
value="#{searchBean.searchDto.createdDate}"
datePattern="yyyy-MM-dd" inputStyle="width:150px"></rich:calendar>
</td>
</tr>
</table>
</td>
</tr>
</table>
</rich:panel></td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="100%" align="center">
<table>
<tr>
<td width="3px"><h:commandButton image="search.png"
actionListener="#{searchBean.doSearch}"></h:commandButton>
<td width="3px"><h:commandButton image="clean.png"
actionListener="#{searchBean.doClear}"></h:commandButton>
</tr>
</table>
</td>
</tr>
<tr>
<td>
<table>
<tr>
<td><rich:datascroller renderIfSinglePage="false" align="center" for="ideasTable"
id="ideasTableScroller" />
<rich:dataTable
rendered="#{searchBean.showResultsTable}" rows="15"
rowClasses="odd-row, even-row"
value="#{searchIBean.result}" var="record"
id="ideasTable">
<rich:column width="80px" style="text-align: center;">
<f:facet name="header">
<h:outputText value="No"></h:outputText>
</f:facet>
<h:outputText value="#{record.no}"></h:outputText>
</rich:column>
<rich:column width="250px" style="text-align: center;">
<f:facet name="header">
<h:outputText value="title"></h:outputText>
</f:facet>
<h:outputText value="#{record.title}"></h:outputText>
</rich:column>
<rich:column width="90px" style="text-align: center;">
<f:facet name="header">
<h:outputText value="description"></h:outputText>
</f:facet>
<h:outputText value="#{record.description}"></h:outputText>
</rich:column>
<rich:column width="90px" style="text-align: center;">
<f:facet name="header">
<h:outputText value="created Date"></h:outputText>
</f:facet>
<h:outputText value="#{record.createdDate}"></h:outputText>
</rich:column>
<rich:column width="80px" style="text-align: center;">
<f:facet name="header">
<h:outputText value="status"></h:outputText>
</f:facet>
<h:outputText value="#{record.statusDescription}"></h:outputText>
</rich:column>
<rich:column width="70px" style="text-align: center;">
<f:facet name="header">
<h:outputText value="creator"></h:outputText>
</f:facet>
<h:outputText value="#{record.creator}"></h:outputText>
</rich:column>
<rich:column width="115px" style="text-align: center;">
<table width="100%">
<tr>
<td><h:commandLink
action="#{searchBean.goDetails}" value="Details">
<f:param name="ideaId" value="#{record.id}"></f:param>
</h:commandLink></td>
</tr>
<tr>
<td><h:commandLink
action="#{searchBean.goAttachments}"
value="Attachments">
<f:param name="ideaId" value="#{record.id}"></f:param>
</h:commandLink></td>
</tr>
</table>
</rich:column>
</rich:dataTable></td>
</tr>
我在bean中有此方法：
public void doSearch(ActionEvent actionEvent) {
Delegate delegate = new Delegate();
result = delegate.search(searchDto);
if (result == null || result.size() == 0) {
addInformationMessage("no data");
}
}
public String goDetails() {
long ideaId = Long.parseLong(FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("ideaId"));
FacesContext.getCurrentInstance().getExternalContext().getRequestMap().put("ideaId",
ideaId);
return "goIdeaDetails";
}
faces-config.xml：
<navigation-rule>
<display-name>Search</display-name>
<from-view-id>/Search</from-view-id>
<navigation-case>
<from-outcome>goIdeaDetails</from-outcome>
<to-view-id>/IdeaDetails</to-view-id>
</navigation-case>
</navigation-rule>
可能是来自“表彰链接”行为的例外吗？
答案 0 :(得分：1)
是因为IDEA.I_TITLE LIKE '%?%'。您不应在通配符之间加上任何引号。
您应该将查询调整为：IDEA.I_TITLE LIKE ?
并将您的参数更改为
preparedStatement.setString(2, "%"+searchDto.getIdeaTitle()+"%");
答案 1 :(得分：0)
问题在于'%?%'是字符串文字，该文字中的?只是文本中的问号，而不是参数标记。因此，查询中只有3个参数，而不是4个参数。
相反，您需要将其更改为like '%' + ? + '%'（对于标准SQL，则更改为like '%' || ? || '%'），或者您需要使用like ?并将setString调用更改为包括通配符。