Hai Para Ahli, Saya memiliki kode pengontrol ini yang melemparkan kesalahan yang disebutkan di atas. Itu bekerja dengan baik sampai kemarin, saya tidak tahu apa yang rekan saya lakukan pada kode ini dan hari ini saya melihat kesalahan:
Baik BindingResult maupun objek target biasa untuk nama bean ' sideForm ' tersedia sebagai atribut permintaan
Bisakah Anda menyarankan saya di mana harus mencari kesalahan semacam ini. Apakah saya membuat kesalahan dalam deklarasi metode POST atau GET atau mengembalikan sesuatu yang salah?
Bantuan Anda sangat dihargai :)
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");
}
}
Halaman ini mendapatkan nilai dari formulir yang ditunjukkan di bawah ini:
<form:form commandName="sideForm">
<div style="font-weight:bold; color:#000">Timeline</div>
<div style="margin:0 0 5px 0;"><form:select path="timeline" items="${timeline}" id="tm"/></div>
<div class="tofrom">From:</div>
<form:input path="startDt" id="from_date" size="7" maxlength="10" />
<div class="tofrom">To:</div>
<form:input path="endDt" id="to_date" size="7" maxlength="12" />
<input type="submit" value="Update Chart" />
</form:form>
Pastikan bahwa formulir Spring Anda menyebutkan modelAttribute="<Model Name"
.
Contoh:
@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;
}
}
Di JSP Anda:
<form:form modelAttribute="greeting" method="POST" action="greeting.html">
Pastikan Anda mendeklarasikan bean yang terkait dengan form di metode GET dari controller terkait dan juga menambahkannya di model model.addAttribute("uploadItem", uploadItem);
yang berisi anotasi @RequestMapping(method = RequestMethod.GET)
.
Misalnya UploadItem.java dikaitkan dengan myform.jsp dan pengontrolnya adalah SecureAreaController.java
myform.jsp berisi
<form:form action="/securedArea" commandName="uploadItem" enctype="multipart/form-data"></form:form>
@RequestMapping("/securedArea")
@Controller
public class SecureAreaController {
@RequestMapping(method = RequestMethod.GET)
public String showForm(Model model) {
UploadItem uploadItem = new UploadItem(); // declareing
model.addAttribute("uploadItem", uploadItem); // adding in model
return "securedArea/upload";
}
}
Seperti yang Anda lihat, saya mendeklarasikan UploadItem.java dalam metode GET controller.
Coba tambahkan parameter BindingResult ke metode yang dianotasi dengan parameter yang dianotasi dengan @RequestMapping
yang memiliki parameter yang dianotasi dengan @ModelAttribute
. Setelah setiap parameter @ModelAttribute
, Spring mencari BindingResult di posisi parameter berikutnya (urutan adalah penting).
Jadi coba ubah:
@RequestMapping(method = RequestMethod.POST)
public String loadCharts(HttpServletRequest request, ModelMap model, @ModelAttribute("sideForm") Chart chart)
...
Untuk:
@RequestMapping(method = RequestMethod.POST)
public String loadCharts(@ModelAttribute("sideForm") Chart chart, BindingResult bindingResult, HttpServletRequest request, ModelMap model)
...