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htmljspspring-mvcspring-bootjsp-tags

spring mvc form:select option not displaying in screen but is there in HTML source

I am using the spring MVC model attribute approach. When opening a screen i got to read a JSON string and create a map. Display the map in a drop down list. I could see the values in HTML source code but not seeing the drop down in the screen.

@RequestMapping("/xxx")
public ModelAndView saws(Map<String, Object> model1) throws IOException {
    ModelAndView model = new ModelAndView("xxx");
    model.addObject("message", this.welcome);
    Map<String, String> offers = engine.getOffers();
    model.addObject("offers", offers);//map of offers
    model.addObject("inputs", new inputs());
    return model;

}

JSP

<form:form action="getoffers" method="get" modelAttribute="inputs">
<body>
<table align="center">
        <tr class="blank_row">
            <td colspan="2"></td>
        </tr>
        <tr class="blank_row">
            <td colspan="2"></td>
        </tr>
        <tr align="center">
            <th span
                style="color: red; font-weight: bold; word-wrap: break-word;"
                align="center">Select the service to view current offers</th>
        </tr>
        <tr>
            <td><form:select path="offers">
                    <form:options items="${offers}" />
                </form:select></td>
        </tr>
    </table>

And in the screen i don't see the drop down.when i check the source code I see this. Pls see the pictures

enter image description here

enter image description here

Solution

  • Assume you already had the sping-mvc dependency.

    The html source file is not supposed to have <form:...> prefix. It is not rendered correctly.

    Put this in your jsp file:
    <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>

    I highly recommend that you use Thymeleaf template engine instead of JSP. The reasons are too long to fit in this answer area.