how to display information in jsp page from controller Spring MVC
Question
I need display data in jsp with controller, i have List with information for print in jsp.
When run this code i get error:
HTTP Status 500 - Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [entities.Pupil]: No default constructor found; nested exception is java.lang.NoSuchMethodException: entities.Pupil.()
Controller
@Controller
public class PupilController {
@RequestMapping(value = "/add", method = RequestMethod.POST)
public List add(@ModelAttribute Pupil pupil){
System.out.println(pupil.toString());
List<Pupil> pupilList = new ArrayList<Pupil>();
pupilList.add(new Pupil(1, "Name", "Last", 13));
pupilList.add(new Pupil(2, "Name", "Last", 55));
pupilList.add(new Pupil(3, "Name", "Last", 41));
return pupilList;
}
}
index.jsp
<body>
<h2>Hello World!</h2>
<a href="hello">click</a>
<form action="/add" method="post">
<p>1:</p><input type="text" name="one">
<p>2:</p><input type="text" name="two">
<p>3:</p><input type="text" name="three">
<p>4:</p><input type="text" name="four">
<input type="submit" value="button">
</form>
</body>
add.jsp
<body>
<h3>This is add.jsp</h3>
<table>
<thead>
<tr>
<td>ID</td>
<td>NAME</td>
<td>LAST</td>
<td>YEAR</td>
</tr>
</thead>
<tbody>
<c:forEach items="${pupilList}" var="tester">
<tr>
<td>${tester.id}</td>
<td>${tester.name}</td>
<td>${tester.last}</td>
<td>${tester.year}</td>
</tr>
</c:forEach>
</tbody>
</table>
</body>
2 answers
solution1
0 2015-08-26 09:53:37
Try this
@RequestMapping(value = "/add", method = RequestMethod.POST)
public ModelAndView add(@ModelAttribute Pupil pupil){
System.out.println(pupil.toString());
List<Pupil> pupilList = new ArrayList<Pupil>();
pupilList.add(new Pupil(1, "Name", "Last", 13));
pupilList.add(new Pupil(2, "Name", "Last", 55));
pupilList.add(new Pupil(3, "Name", "Last", 41));
ModelAndView view = new ModelAndView();
view.addObject(pupilList);
return view;
}
Or
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String add(@ModelAttribute Pupil pupil, ModelMap model){
System.out.println(pupil.toString());
List<Pupil> pupilList = new ArrayList<Pupil>();
pupilList.add(new Pupil(1, "Name", "Last", 13));
pupilList.add(new Pupil(2, "Name", "Last", 55));
pupilList.add(new Pupil(3, "Name", "Last", 41));
model.put("pupilList", pupilList);
return "page-name";
}
solution2
0 ACCPTED 2015-08-26 09:58:21
Make below changes in your code.
- Add
default constructorin your Pupil class. - Add tag lib in your jsp file.
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> Include pom entry for JSTL .
<dependency> <groupId>javax.servlet.jsp.jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency>
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