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POHow to work with dependent fields in Spring 3.0?
 

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  1. POHow to work with dependent fields in Spring 3.0?
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    <p>I tried to create my first spring mvc application. I'm using architecture: Spring MVC-Service-DAO-Persistence Architecture. I've get this error:</p> <pre><code>Field error in object 'rooms' on field 'roomTypeId': rejected value [7]; codes [typeMismatch.rooms.roomTypeId,typeMismatch.roomTypeId,typeMismatch.mypackage.domain.RoomType,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [rooms.roomTypeId,roomTypeId]; arguments []; default message [roomTypeId]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'mypackage.domain.RoomType' for property 'roomTypeId'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [mypackage.domain.RoomType] for property 'roomTypeId': no matching editors or conversion strategy found] </code></pre> <p>Domain:</p> <pre class="lang-java prettyprint-override"><code>@Entity @Table(name = "rooms") @XmlRootElement @NamedQueries({ @NamedQuery(name = "Rooms.findAll", query = "SELECT r FROM Rooms r")}) public class Rooms implements Serializable { ... @JoinColumn(name = "RoomTypeId", referencedColumnName = "RoomTypeId") @ManyToOne private RoomType roomTypeId; ... public RoomType getRoomTypeId() { return roomTypeId; } public void setRoomTypeId(RoomType roomTypeId) { this.roomTypeId = roomTypeId; } } </code></pre> <p>Controller:</p> <pre class="lang-java prettyprint-override"><code>@RequestMapping(value = "/room/add", method = RequestMethod.POST) public String addRoom(@ModelAttribute("rooms") Rooms room, BindingResult result) { roomService.addRoom(room); return "redirect:/rooms"; } </code></pre> <p>I tried:</p> <pre class="lang-java prettyprint-override"><code>@RequestMapping(value = "/room/add", method = RequestMethod.POST) public String addRoom(@ModelAttribute("rooms") Rooms room, @RequestParam Long roomTypeId, BindingResult result) { room.setRoomTypeId(typeService.getType(roomTypeId.intValue())); roomService.addRoom(room); return "redirect:/rooms"; } </code></pre> <p>jsp:</p> <pre class="lang-xml prettyprint-override"><code>&lt;form:form method="post" action="room/add" commandName="room"&gt; &lt;table&gt; &lt;tr&gt; &lt;td&gt;&lt;form:label path="name"&gt; &lt;spring:message code="label.roomname" /&gt; &lt;/form:label&gt;&lt;/td&gt; &lt;td&gt;&lt;form:input path="name" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;form:label path="roomTypeId"&gt; &lt;spring:message code="label.typeroom" /&gt; &lt;/form:label&gt; &lt;/td&gt; &lt;td&gt; &lt;form:select path="roomTypeId" name="roomTypeId"&gt; &lt;c:forEach items="${typeList}" var="type"&gt; &lt;form:option value="${type.roomTypeId}" label="${type.name}"/&gt; &lt;/c:forEach&gt; &lt;/form:select&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td colspan="2"&gt;&lt;input type="submit" value="&lt;spring:message code="label.addroom"/&gt;" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form:form&gt; </code></pre> <p>I understand why this shows me. But I do not know how to fix it. Help me fix it or tell me what I'm doing wrong.</p>
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      1. POHow to work with dependent fields in Spring 3.0?
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    1. COBefore you continue, in `public String addRoom(@ModelAttribute("rooms") Rooms room, @RequestParam Long roomTypeId, BindingResult result...`, put the `BindingResult` argument next to the `Rooms` argument.
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      1. POHow to work with dependent fields in Spring 3.0?
      1. USSotirios Delimanolis
    2. COthanks a lot. it's work=)
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