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POCan't configure <form:input> within <foreach> tag
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  1. POCan't configure <form:input> within <foreach> tag
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    copied!<p>I am using the Spring form tag library in my JSP. My command object contains a List and i want to make bindings for each object of the list in my JSP. But STS gives me an Exception that tells that: </p> <blockquote> <p>Bean property 'testList[0]' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?]</p> </blockquote> <p>Here is full Exception code:</p> <pre><code>SEVERE: Servlet.service() for servlet [appServlet] in context with path [/mvc] threw exception [org.springframework.beans.NotReadablePropertyException: Invalid property 'testList[0]' of bean class [java.util.ArrayList]: Bean property 'testList[0]' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?] with root cause org.springframework.beans.NotReadablePropertyException: Invalid property 'testList[0]' of bean class [java.util.ArrayList]: Bean property 'testList[0]' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter? at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:729) at org.springframework.beans.BeanWrapperImpl.getNestedBeanWrapper(BeanWrapperImpl.java:576) at org.springframework.beans.BeanWrapperImpl.getBeanWrapperForPropertyPath(BeanWrapperImpl.java:553) at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:719) at org.springframework.web.servlet.support.BindStatus.&lt;init&gt;(BindStatus.java:147) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:178) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:198) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java:164) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.autogenerateId(AbstractDataBoundFormElementTag.java:151) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java:142) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:126) at org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:421) at org.springframework.web.servlet.tags.form.InputTag.writeTagContent(InputTag.java:142) at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:102) at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:79) at org.apache.jsp.WEB_002dINF.views.test_jsp._jspx_meth_form_005finput_005f0(test_jsp.java:217) at org.apache.jsp.WEB_002dINF.views.test_jsp._jspx_meth_c_005fforEach_005f0(test_jsp.java:167) at org.apache.jsp.WEB_002dINF.views.test_jsp._jspx_meth_form_005fform_005f0(test_jsp.java:122) at org.apache.jsp.WEB_002dINF.views.test_jsp._jspService(test_jsp.java:82) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339) at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) </code></pre> <p>Here is my .jsp page :</p> <pre><code>&lt;%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%&gt; &lt;%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;Home&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;h1&gt; Hello! &lt;/h1&gt; &lt;form:form action="saveStudent" method="POST" modelAttribute = "testList"&gt; &lt;c:forEach items="${testList}" var="test" varStatus="pStatus"&gt; Test Question: &lt;form:input path = "testList[${pStatus.index}].testQuestion" value = "${test.testQuestion}"/&gt; Option one: &lt;form:input path = "testList[${pStatus.index}].optionOne" value= "${test.optionOne}"/&gt; Option two: &lt;form:input path = "testList[${pStatus.index}].optionTwo" value= "${test.optionTwo}"/&gt; Option three: &lt;form:input path = "testList[${pStatus.index}].optionThree" value= "${test.optionThree}"/&gt; &lt;/c:forEach&gt; &lt;input type="submit" value="Submit" /&gt; &lt;/form:form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Here is my method code: </p> <pre><code>@RequestMapping(value = "/test", method = RequestMethod.GET) public String redactTest(Model model, HttpServletRequest request) { List&lt;Test&gt; testList = db.getTests(); model.addAttribute("testList", testList); return "test"; } </code></pre> <p>What i'm doing wrong? Any suggestions? Thanks! </p> <p>OK, i have a solution: first i've added TestWrapper class which contains List with get and set:</p> <pre><code>public class TestWrapper { private List&lt;Test&gt; testList = null; public TestWrapper(List&lt;Test&gt; testList) { this.testList = testList; } public void setTestList(List&lt;Test&gt; testList) { this.testList = testList; } public List&lt;Test&gt; getTestList() { return testList; } } </code></pre> <p>Then i've changed my method code: </p> <pre><code>@RequestMapping(value = "/test", method = RequestMethod.GET) public String redactTest(Model model, HttpServletRequest request) { List&lt;Test&gt; testList = db.getTests(); TestWrapper testWrapper = new TestWrapper(testList); model.addAttribute("testWrapper", testWrapper); return "test"; } </code></pre> <p>and after i've changed my .jsp:</p> <pre><code>&lt;%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%&gt; &lt;%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;Home&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;h1&gt; Hello! &lt;/h1&gt; &lt;form:form action="saveStudent" method="POST" modelAttribute = "testWrapper"&gt; &lt;c:forEach items="${testWrapper.testList}" var="test" varStatus="i"&gt; Test Question: &lt;form:input path = "testList[${i.index}].testQuestion" value = "${test.testQuestion}"/&gt; Option one: &lt;form:input path = "testList[${i.index}].optionOne" value= "${test.optionOne}"/&gt; Option two: &lt;form:input path = "testList[${i.index}].optionTwo" value= "${test.optionTwo}"/&gt; Option three: &lt;form:input path = "testList[${i.index}].optionThree" value= "${test.optionThree}"/&gt; &lt;/c:forEach&gt; &lt;input type="submit" value="Submit" /&gt; &lt;/form:form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>And now it works! Hope it will help someone :)</p>
 

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