Simple search in Spring MVC

Question

I'm new to Spring MVC, and I'm trying to do a simple search. Here's my Controller and View. How do I make the search to actually work? The findTeamByName is already implemented from a interface and the Teams are already populated in memory. Thank you in advance guys!

@Controller
public class SearchController {

  @Autowired    
  SuperPlayerService sp;

  @RequestMapping(value="/search")
    public ModelAndView Search(@RequestParam(value = "searchTerm", required = false) 
    String pSearchTerm, HttpServletRequest request, HttpServletResponse response) {
        ModelAndView mav = new ModelAndView("search");

       mav.addObject("searchTerm", pSearchTerm);
       mav.addObject("searchResult", sp.findTeamByName(pSearchTerm));      

     return mav;
   }
}

JSP:

<%@ page contentType="text/html" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib prefix="t" tagdir="/WEB-INF/tags" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>


<t:MasterTag>
<jsp:attribute name="pageTitle"><c:out value="Search"/></jsp:attribute>
<jsp:attribute name="currentMenuName"><c:out value="Search"/></jsp:attribute>
<jsp:body>





<div class="row">
     <div class="small-3 columns">
        <input type="text" id="txt" name="searchString">
      </div>

       <div class="small-5 columns end">
         <button id="button-id" type="submit">Search Teams</button>
       </div>

   </div>

 <div class="row">
      <div>
         ${searchTerm}
     </div>
</div>

Solution 1

you can return your values i.e in a ModelAndView

@RequestMapping(value="/search/{searchTerm}")
public ModelAndView Search(@PathVariable("searchTerm") String pSearchTerm) {
    ModelAndView mav = new ModelAndView("search");

    mav.addObject("searchTerm", pSearchTerm);
    mav.addObject("searchResult", sp.findTeamByName(pSearchTerm));      

    return mav;
}

This field can be accessed in your search.jsp by ${searchTerm}

EDIT:

if you want so search like: search?searchTerm=java then you can do it with:

@RequestMapping(value="/search")
public ModelAndView Search(@RequestParam(value = "searchTerm", required = false) String pSearchTerm, HttpServletRequest request, HttpServletResponse response) {
    ModelAndView mav = new ModelAndView("search");

    mav.addObject("searchTerm", pSearchTerm);
    mav.addObject("searchResult", sp.findTeamByName(pSearchTerm));      

    return mav;
}

Solution 2

Spring MVC Controller method can accept a wide range of arguments and one of them is org.springframework.ui.Model.

You can add values to the Model which will become available in your JSP at requestScope.

In your case, your Java code would look like this

@RequestMapping(value = "/search")
public String Search(@RequestParam("searchString") String searchString, Model model) {

    if(searchString != null){
        Object searchResult = sp.findTeamByName(searchString);
        model.addAttribute("searchResult", searchResult);  
    }

    return "search";
}

In your JSP, you could then access the result as usual object in requestScope like ${searchResult}

Solution 3

Your JSP needs to look like:

<%@ page contentType="text/html" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib prefix="t" tagdir="/WEB-INF/tags" %>


<t:MasterTag>
<jsp:attribute name="pageTitle"><c:out value="Search"/></jsp:attribute>
<jsp:attribute name="currentMenuName"><c:out value="Search"/></jsp:attribute>
<jsp:body>

<div></div> 

<div class="row">
    <form method="get" action="/search">
       <div class="small-3 columns">
          <input type="text" id ="txt" name="searchString" >
       </div>

       <div class="small-5 columns end">
          <button id="button-id" type="submit">Search Teams</button>
       </div>

       <div>
           ${player.superTeam}
       </div>
    </form>

</div>

And your controller would be:

@Controller
public class SearchController {

   @Autowired    
   SuperPlayerService sp;


   @RequestMapping(value = "/search")
   public String Search(@RequestParam("searchString") String searchString) {

      if(searchString != null){
         sp.findTeamByName(searchString);
      }

       return "search";
   }
}