Spring – BindingResult and a normal target object of the BEAN name cannot be used as a request attr

@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;
 }
}

See English answer> What causes "Java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name'command' available as request attribute"? 6

Hey experts,
I have this controller code throw The above error occurred. It worked fine. Until yesterday, I didn’t know what a colleague did with this code. Today I saw an error: BindingResult and the ordinary target object of the bean name'sideForm' are not available for use Request attributes

Can you tell me where to look for this kind of error? Did I make any mistakes or return errors in the POST or GET method declaration?

Thank you very much for your help:)

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;< br />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  list = acsd.getLandingChartDataList();

 if (list.size() == 4) {
 Chart chart1 = new Chart(list.get(0));< br /> 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() + ">>"< br /> + 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);
< br />

 model.put("chartOneDatasource", chartOneDatasource);
 model.put("chartTwoDatasource", chartTwoDatasource);
 model.put("chartThreeDatasource", 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);< br />
 ChartData cd = new ChartData();

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



 AdminChartSummaryData acsd = new AdminChartSummaryData();
 List 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);< br /> 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 populateTimeline() {
 return Arrays. asList("Daily", "Weekly", "Monthly", "Quarterly",
 "Annually", "12_Month_Rolling");
}
}

Timeline





From:




To:

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

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

 /**
 * GET
 * 
 * 
 */
 @RequestMapping(method = RequestMethod.GET)< br /> 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 ;
 }
}