java Spring SimpleFormController - 在成功视图中包括搜索表单

Spring SimpleFormController - Including Search Form In Success View

提问by AJ.

UPDATE 1/31/10: Since this thread continues to get a lot of views...I am curious if it has been of help to anyone recently? Feel free to leave comments/feedback, thanks.

2010 年 1 月 31 日更新：由于该线程继续获得大量浏览量...我很好奇最近是否对任何人有所帮助？请随时发表评论/反馈，谢谢。

---

---

I have a Spring form where I would like to reuse the search page to include the results under the search form. Currently when I do this I get the following error on loading the success view:

我有一个 Spring 表单，我想在其中重用搜索页面以将结果包含在搜索表单下。目前，当我这样做时，我在加载成功视图时收到以下错误：

java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'searchAccounts' available as request attribute

Here is my bean configuration:

这是我的bean配置：

<bean name="/search.html" class="myapp.web.AccountSearchController">
        <property name="sessionForm" value="true"/>
    <property name="commandName" value="searchAccounts"/>
    <property name="commandClass" value="myapp.service.AccountSearch"/>
    <property name="validator">
        <bean class="myapp.service.AccountSearchValidator"/>
    </property>
    <property name="formView" value="accountSearch"/>
    <property name="successView" value="accountSearchResults"/>
</bean>

Here is the snippet of JSP that includes the search form:

这是包含搜索表单的 JSP 片段：

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>

<form:form method="post" commandName="searchAccounts">

<table valign="top" cellspacing="0" cellpadding="0" width="500" border="0">

    <tr>
        <td valign="top">

        <div class="border-title">Account Search</div>

        <div id="navhome">
        <div class="border">
        <div id="sidebarhome">


        <table id="form">
            <tr>
                <td colspan="2">Search by Account ID or Domain Name. If
                values are provided for both, only accounts matching both values
                will be returned.</td>
            </tr>

            <tr>
                <td colspan="2">&nbsp;</td>
            </tr>

            <tr>
                <td align="right" valign="top"><form:label path="accountId">Account ID</form:label>:</td>
                <td><form:input path="accountId" size="30"/></td>
            </tr>
            <c:set var="accountIdErrors"><form:errors path="accountId"/></c:set>
            <c:if test="${not empty accountIdErrors}">
            <tr>
                 <td>&nbsp;</td>
                 <td>${accountIdErrors}</td>
            </tr>
            </c:if>
            <tr>
                <td align="right" valign="top"><form:label path="domainName">Domain Name</form:label>:</td>
                <td><form:input path="domainName" size="30"/></td>
            </tr>
            <c:set var="domainNameErrors"><form:errors path="domainName"/></c:set>
            <c:if test="${not empty domainNameErrors}">
            <tr>
                 <td>&nbsp;</td>
                 <td>${domainNameErrors}</td>
            </tr>
            </c:if>
            <tr>
                <td colspan="2">&nbsp;</td>
            </tr>
            <tr>
                <td>&nbsp;</td>
                <td><input type="submit" name="submit" value="Search">
                </td>
            </tr>
        </table>

        </div>
        </div>
        </div>

        </td>
    </tr>
</table>
</form:form>

And...here is my form controller class (less the imports):

而且...这是我的表单控制器类（减去导入）：

    public class AccountSearchController  extends SimpleFormController {

    protected final Log logger = LogFactory.getLog(getClass());

    public ModelAndView onSubmit(Object command, BindException errors) throws ServletException {
        String accountId = ((AccountSearch) command).getAccountId();
        String domainName = ((AccountSearch) command).getDomainName();

        logger.info("User provided search criteria...\n\tDomain Name: " + domainName + "\n\tAccountId: " + accountId);

        //TODO do search

        logger.info("returning from AccountSearch form view to " + getSuccessView());

        return new ModelAndView(getSuccessView());
    }

    protected Object formBackingObject(HttpServletRequest request) throws ServletException {
        AccountSearch accountSearch = new AccountSearch();
        return accountSearch;
    }
}

Thanks in advance for your help!

在此先感谢您的帮助！

-aj

-aj

UPDATE:

更新：

I ported this to an annotated controller per answer below. Here is the new/working code:

我将其移植到下面每个答案的带注释的控制器。这是新的/工作代码：

@Controller
@RequestMapping("/search.html")
public class AccountSearchController {

    // note: this method does not have to be called setupForm
    @RequestMapping(method = RequestMethod.GET)
    public String setupForm(Model model) {
        AccountSearchCriteria accountSearchCriteria = new AccountSearchCriteria();
        model.addAttribute("accountSearchCriteria", accountSearchCriteria);
        model.addAttribute("title", "Account Search");
        return "accountSearch";
    }

    // note: this method does not have to be called onSubmit
    @RequestMapping(method = RequestMethod.POST)
    public String onSubmit(@ModelAttribute("accountSearchCriteria") AccountSearchCriteria accountSearchCriteria, BindingResult result, SessionStatus status, Model model) {
        new AccountSearchValidator().validate(accountSearchCriteria, result);
        if (result.hasErrors()) {
            return "accountSearch";

        } else {
            ArrayList<AccountSearchCriteria> accountSearchResults = new ArrayList<AccountSearchCriteria>();

            AccountSearchCriteria rec = new AccountSearchCriteria();
            rec.setDomainName("ajcoon.com");
            accountSearchResults.add(rec);

            AccountSearchCriteria rec2 = new AccountSearchCriteria();
            rec2.setDomainName("ajcoon2.com");
            accountSearchResults.add(rec2);

            //TODO do search
            //ArrayList<HashMap<String,String>> accountSearchResults = new AccountSearchService().search(accountId,domainName);

            if( accountSearchResults.size() < 1 ){
                result.rejectValue("domainName", "error.accountSearch.noMatchesFound", "No matching records were found.");
                return "accountSearch";

            } else if(accountSearchResults.size() > 1){
                model.addAttribute("accountSearchResults", accountSearchResults);
                return "accountSearch";

            } else {
                status.setComplete();
                return "redirect:viewAccount?accountId=";
                //return "redirect:viewAccount?accountId=" + accountSearchResults.get(0).getAccountId();
            }
        }
    }   
}

采纳答案by surajz

try to use (throws Exception instead of ..)

尝试使用（抛出异常而不是..）

protected Object formBackingObject(HttpServletRequest request)
                            throws Exception {
        AccountSearch accountSearch = new AccountSearch();
        System.out.println("inside formBackingObject");
        return accountSearch;
}

It looks like your formBackingObject Method is not executed. rerun the code with the above change and see log console to see if the method is executed.

看起来您的 formBackingObject 方法未执行。重新运行具有上述更改的代码并查看日志控制台以查看该方法是否被执行。

--

——

You should be using annotation instead of extending controller. Spring 3.0 will deprecate the controller hierarchy.

您应该使用注释而不是扩展控制器。Spring 3.0 将弃用控制器层次结构。