Spring MVC休眠添加兩個ModelAttribute使用<form:hidden>

我在評論/回覆系統上測試，並且遇到了問題。我有評論和回覆模式。Spring MVC休眠添加兩個ModelAttribute使用<form:hidden>

@Entity 
public class Reply { 

    @Id 
    @GeneratedValue 
    private int replyId; 
    private String body; 
    private String replyOwner; 
    private Date datePosted; 
    @ManyToOne 
    @JoinColumn(name="commentedOn") 
    private Comment commentedOn; 
//getters and setters 

@Entity 
public class Comment { 

    @Id 
    @GeneratedValue 
    private int comment_id; 

    private String commentBody; 
    private String commentOwner; 
    private Date datePosted; 
    @OneToMany 
    private List<Reply> replies; 
//getters and setters

這是兩種形式我想使用：

<c:forEach items="${commentList}" var="comment"> 
       <div class="comment-box"> 
        <div class="comment-head"> 
         <h6 class="comment-name by-author"><a 
           href="http://creaticode.com/blog">${comment.commentOwner}</a></h6> 
         <span>${comment.datePosted}</span> 
         <i class="fa fa-reply"></i> 
         <i class="fa fa-heart"></i> 
        </div> 
        <div class="comment-content"> 
          ${comment.commentBody} 
         <br> 
           <button id="replyButton">Reply</button> 
        </div> 

        <ul class="comments-list reply-list"> 
         <li> 
          <!--////////////////////////////////////////////////////////////////////////--> 
          <div id="replym8"> 
           <form:form action="${pageContext.request.contextPath}/commentTest" method="post" commandName="reply"> 

            <div class="comment-box"> 
             <div class="comment-content"> 
              <label for="reply">Reply</label> 
              <form:textarea path="body" id="reply" class="form-Control" accept-charset="UTF-8"/> 
             </div> 
             <c:set var="commentID" value="${comment.comment_id}"/> 

             <input type="submit" value="Post reply" class="btn btn-default"> 
            </div> 


           </form:form> 

            </div> 


           <!--////////////////////////////////////////////////////////////////////////--> 
          <c:forEach items="${replyList}" var="onereply"> 

           <c:if test="${onereply.commentedOn.comment_id == onecomment.comment_id}"> 
            <div class="comment-box"> 
             <div class="comment-head"> 
              <h6 class="comment-name"><a 
                href="http://creaticode.com/blog">${onereply.replyOwner}</a></h6> 
              <span>${onereply.datePosted}</span> 
              <i class="fa fa-reply"></i> 
              <i class="fa fa-heart"></i> 
             </div> 
             <div class="comment-content"> 
               ${onereply.body} 
             </div> 
            </div> 
           </c:if> 

          </c:forEach> 
         </li> 
        </ul> 
        </c:forEach> 
       </div> 
      </div> 


    </ul> 
</div> 


<form:form action="${pageContext.request.contextPath}/commentTest" method="post" commandName="comment"> 


    <div class="comment-box"> 
     <div class="comment-head"> 
      <label for="comment">Comment_Owner</label> 
      <form:textarea path="commentOwner" id="commentOwner" class="form-Control" accept-charset="UTF-8"/> 
     </div> 
     <div class="comment-content"> 
      <label for="comment">Comment</label> 
      <form:textarea path="commentBody" id="comment" class="form-Control" accept-charset="UTF-8"/> 
     </div> 
    </div> 

    <input type="submit" value="Dodaj" class="btn btn-default"> 
</form:form>

的問題是在<form:hidden path="commentedOn" value="${commentID}"/>，我已經使用<form:hidden path="commentedOn" value="$comment.comment_id"/>

這兩種剛返回錯誤400還試圖

這是控制器：

@RequestMapping("/commentTest") 
    public String commentTest(Model model) { 
     Comment comment = new Comment(); 
     Reply reply = new Reply(); 
     model.addAttribute("comment", comment); 
     model.addAttribute("reply", reply); 
     List<Comment> commentList = commentService.getComments(); 
     List<Reply> replyList = commentService.getRepliesByComment(); 
     model.addAttribute("replyList", replyList); 
     model.addAttribute("commentList", commentList); 
     return "commentTest"; 
    } 

    @RequestMapping(value = "/commentTest", method = RequestMethod.POST) 
    public String commentTestPost(@ModelAttribute("comment") Comment comment, Model model, @ModelAttribute("reply") Reply reply, BindingResult bindingResult) { 
     if (bindingResult.hasErrors()) { 
      return "commentTest"; 
     } 
      commentService.addComment(comment); 
      commentService.addReply(reply); 
      List<Comment> commentList = commentService.getComments(); 
      List<Reply> replyList = commentService.getRepliesByComment(); 
      model.addAttribute("replyList", replyList); 
      model.addAttribute("commentList", commentList); 
      return "commentTest"; 

    }

.addComment和.addReply方法只使用.saveOrUpdate使用Hibernate和那兩個工作。

感謝您的幫助提前。 :)

來源

2017-07-02 David Misic

你不必''在表單中 –

嘗試'<形式：隱藏路徑= 「commentedOn.comment_id」值=「$ {評論。 comment_id}「/>'回覆'commentedOn' –

我做了這樣的：

<c:if test="${pageContext.request.userPrincipal.name != null}"> 
           <div id="replym8"> 
            <form:form action="${pageContext.request.contextPath}/viewPhoto/${photo.id}" 
               method="post" commandName="reply"> 

             <div class="comment-box"> 
              <div class="comment-content"> 
               <label for="reply">Reply</label> 
               <form:hidden path="replyOwner" 
                  value="${pageContext.request.userPrincipal.name}" 
                  id="replyOwner"/> 
               <form:textarea rows="1" path="body" id="reply" class="form-Control" 
                   accept-charset="UTF-8"/> 
               <form:hidden path="commentedOnRep" value="${onecomment.comment_id}"/> 
               <input style="float:right;" type="submit" value="Reply" name="reply" 
                 class="btn btn-default"> 
              </div> 
              <br> 
             </div> 
            </form:form> 
           </div> 
          </c:if>

來源

2017-07-19 23:07:34

Spring MVC休眠添加兩個ModelAttribute使用<form:hidden>

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