Neither BindingResult nor plain target object for bean name available as request attr

Question

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Hi Experts, I have this controller code which is throwing the above mentioned error. It was working fine till yesterday, I have no clue what colleague did to this code and today I am seeing the error:

Neither BindingResult nor plain target object for bean name 'sideForm' available as request attribute

Can you please suggest me where to look for this kind of error. Am I making any mistake in POST or GET method declaration or returning something wrong?

Your help is greatly appreciated :)

enter code here

package com.att.analytics.ui;

import java.util.Arrays; import java.util.Collection; import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod;

import com.si.myworld.business.AdminChart; import com.si.myworld.business.Chart; import com.si.myworld.dao.AdminChartSummaryData; import com.si.myworld.dao.BulletinData; import com.si.myworld.dao.ChartData;

@RequestMapping("/index.html") @Controller public class IndexController {

private static final Logger log = Logger.getLogger(IndexController.class);

/**
 * Called to load the page initially (GET request)
 * 
 * @param model
 * @return
 */
@RequestMapping(method = RequestMethod.GET)
public String getCharts(ModelMap model) {

 Chart chart = new Chart();
 chart.setTimeline("Monthly");
 chart.setStartDt("mm/dd/yyyy");
 chart.setEndDt("mm/dd/yyyy");

 AdminChartSummaryData acsd = new AdminChartSummaryData();
 List<AdminChart> list = acsd.getLandingChartDataList();

 if (list.size() == 4) {
  Chart chart1 = new Chart(list.get(0));
  Chart chart2 = new Chart(list.get(1));
  Chart chart3 = new Chart(list.get(2));
  Chart chart4 = new Chart(list.get(3));
  model.put("chart1", chart1);
  model.put("chart2", chart2);
  model.put("chart3", chart3);
  model.put("chart4", chart4);

  log.info("chart 1>>>>" + chart1);


  ChartData cd = new ChartData();

  String chartOneDatasource = cd.fetchChartDatasourceName(chart1
    .getChartSubgroup());
  String chartTwoDatasource = cd.fetchChartDatasourceName(chart2
    .getChartSubgroup());
  String chartThreeDatasource = cd.fetchChartDatasourceName(chart3
    .getChartSubgroup());
  String chartFourDatasource = cd.fetchChartDatasourceName(chart4
    .getChartSubgroup());

  String breadcrumbOne = chart1.getChartGroup() + ">>"
    + chart1.getChartSubgroup();
  String breadcrumbTwo = chart2.getChartGroup() + ">>"
    + chart2.getChartSubgroup();
  String breadcrumbThree = chart3.getChartGroup() + ">>"
    + chart3.getChartSubgroup();
  String breadcrumbFour = chart4.getChartGroup() + ">>"
    + chart4.getChartSubgroup();


  BulletinData bd = new BulletinData();
  String bulletin = bd.getBulletinData();

  model.put("sideForm", chart);



  model.put("chartOneDatasource", chartOneDatasource);
  model.put("chartTwoDatasource", chartTwoDatasource);
  model.put("chartThreeDatasource", chartThreeDatasource);
  model.put("chartFourDatasource", chartFourDatasource);

  model.put("breadcrumbOne", breadcrumbOne);
  model.put("breadcrumbTwo", breadcrumbTwo);
  model.put("breadcrumbThree", breadcrumbThree);
  model.put("breadcrumbFour", breadcrumbFour);

  model.put("bulletin", bulletin);
 }

 return "land";
}


@RequestMapping(method = RequestMethod.POST)
public String loadCharts(HttpServletRequest request, ModelMap model, @ModelAttribute("sideForm") Chart chart) {

 String from_date = request.getParameter("startDt");
 String to_date = request.getParameter("endDt");

 chart.setStartDt(from_date);
 chart.setEndDt(to_date);

 ChartData cd = new ChartData();

 BulletinData bd = new BulletinData();
 String bulletin = bd.getBulletinData();



 AdminChartSummaryData acsd = new AdminChartSummaryData();
 List<AdminChart> list = acsd.getLandingChartDataList();
 if (list.size() == 4) {
  Chart chart1 = new Chart(list.get(0));
  Chart chart2 = new Chart(list.get(1));
  Chart chart3 = new Chart(list.get(2));
  Chart chart4 = new Chart(list.get(3));
  model.put("chart1", chart1);
  model.put("chart2", chart2);
  model.put("chart3", chart3);
  model.put("chart4", chart4);


  String chartOneDatasource = cd.fetchChartDatasourceName(chart1
    .getChartSubgroup());
  String chartTwoDatasource = cd.fetchChartDatasourceName(chart2
    .getChartSubgroup());
  String chartThreeDatasource = cd.fetchChartDatasourceName(chart3
    .getChartSubgroup());
  String chartFourDatasource = cd.fetchChartDatasourceName(chart4
    .getChartSubgroup());

  model.put("chartOneDatasource", chartOneDatasource);
  model.put("chartTwoDatasource", chartTwoDatasource);
  model.put("chartThreeDatasource", chartThreeDatasource);
  model.put("chartFourDatasource", chartFourDatasource);

  String breadcrumbOne = chart1.getChartGroup() + ">>"
    + chart1.getChartSubgroup();
  String breadcrumbTwo = chart2.getChartGroup() + ">>"
    + chart2.getChartSubgroup();
  String breadcrumbThree = chart3.getChartGroup() + ">>"
    + chart3.getChartSubgroup();
  String breadcrumbFour = chart4.getChartGroup() + ">>"
    + chart4.getChartSubgroup();


  model.put("breadcrumbOne", breadcrumbOne);
  model.put("breadcrumbTwo", breadcrumbTwo);
  model.put("breadcrumbThree", breadcrumbThree);
  model.put("breadcrumbFour", breadcrumbFour);
 }
 return "land";
}


@ModelAttribute("timeline")
public Collection<String> populateTimeline() {
 return Arrays.asList("Daily", "Weekly", "Monthly", "Quarterly",
   "Annually", "12_Month_Rolling");
}

}

This page gets values from a form shown below:

enter code here

Timeline From:

To:

Answer 1

Make sure that your Spring form mentions the modelAttribute="<Model Name".

Example:

@Controller
@RequestMapping("/greeting.html")
public class GreetingController {

 @ModelAttribute("greeting")
 public Greeting getGreetingObject() {
  return new Greeting();
 }

 /**
  * GET
  * 
  * 
  */
 @RequestMapping(method = RequestMethod.GET)
 public String handleRequest() {
  return "greeting";
 }

 /**
  * POST
  * 
  * 
  */
 @RequestMapping(method = RequestMethod.POST)
 public ModelAndView processSubmit(@ModelAttribute("greeting") Greeting greeting, BindingResult result){
  ModelAndView mv = new ModelAndView();
  mv.addObject("greeting", greeting);  
  return mv;
 }
}

In your JSP :

<form:form  modelAttribute="greeting" method="POST" action="greeting.html">