Spring – href with multiple parameters spring

parametersspringurl

i want to sent 3 params to the controller with the following:

<li><a href="result?name1=thor&name2=hulk&name3=loki">SMTH</a></li>

the controller:

@Controller
@RequestMapping(value="/result")
public class SmthController {

    @RequestMapping(method=RequestMethod.GET)
    public String dosmth(HttpServletRequest request) {

        String one = request.getParameter("name1");
        String two = request.getParameter("name2");
        String three = request.getParameter("name3");


        JOptionPane.showMessageDialog(null,
                " Param 1 is:" +one +" \n Param 2 is: " +two +" \n Param 3 is: " +three);

        return "redirect:/";
    }
}

Best Answer

Your code is OK, but this is the Spring-way:

@Controller
@RequestMapping(value="/result")
public class SmthController {

    @RequestMapping(method=RequestMethod.GET)
    public String dosmth(HttpServletRequest request, @RequestParam("name1") String one, @RequestParam("name2") String two, @RequestParam("name3") String three) {

        JOptionPane.showMessageDialog(null,
                " Param 1 is:" +one +" \n Param 2 is: " +two +" \n Param 3 is: " +three);

        return "redirect:/";
    }
}

Additionally, you can use the defaultValue attribute of @RequestParam to establish a default value if param is not set on GET requests.

Related Solutions

Javascript – Get current URL with jQuery

To get the path, you can use:

var pathname = window.location.pathname; // Returns path only (/path/example.html)
var url      = window.location.href;     // Returns full URL (https://example.com/path/example.html)
var origin   = window.location.origin;   // Returns base URL (https://example.com)

Javascript – Get the values from the “GET” parameters (JavaScript)

JavaScript itself has nothing built in for handling query string parameters.

Code running in a (modern) browser you can use the URL object (which is part of the APIs provided by browsers to JS):

var url_string = "http://www.example.com/t.html?a=1&b=3&c=m2-m3-m4-m5"; //window.location.href
var url = new URL(url_string);
var c = url.searchParams.get("c");
console.log(c);

For older browsers (including Internet Explorer), you can use this polyfill or the code from the original version of this answer that predates URL:

You could access location.search, which would give you from the ? character on to the end of the URL or the start of the fragment identifier (#foo), whichever comes first.

Then you can parse it with this:

function parse_query_string(query) {
  var vars = query.split("&");
  var query_string = {};
  for (var i = 0; i < vars.length; i++) {
    var pair = vars[i].split("=");
    var key = decodeURIComponent(pair[0]);
    var value = decodeURIComponent(pair[1]);
    // If first entry with this name
    if (typeof query_string[key] === "undefined") {
      query_string[key] = decodeURIComponent(value);
      // If second entry with this name
    } else if (typeof query_string[key] === "string") {
      var arr = [query_string[key], decodeURIComponent(value)];
      query_string[key] = arr;
      // If third or later entry with this name
    } else {
      query_string[key].push(decodeURIComponent(value));
    }
  }
  return query_string;
}

var query_string = "a=1&b=3&c=m2-m3-m4-m5";
var parsed_qs = parse_query_string(query_string);
console.log(parsed_qs.c);

You can get the query string from the URL of the current page with:

var query = window.location.search.substring(1);
var qs = parse_query_string(query);

Best Answer

Related Solutions

Javascript – Get current URL with jQuery

Javascript – Get the values from the “GET” parameters (JavaScript)

Related Topic