在JSP页面写得判断代码怎么不起作用???

Question

  <%
Query query5=sess.createQuery("select n.newsTitle,n.newsContent,n.newsPath,n.newsId,n.clickCount,n.newsPicDes from NewsInfo n where n.newsType in (select nt.typeId from NewsType nt where nt.typeName='十大名村') order by n.newsPubtime desc");
                      query5.setFirstResult(0);
                      query5.setMaxResults(2);
                      List list7=query5.list();
                      Iterator iter8=list7.iterator();
                      while(iter8.hasNext()){
                      Object[] o7=(Object[])iter8.next();
                      String newsPath=o7[2].toString();
                     String[] path1=newsPath.split(",");
                     System.out.println(path1.length);
                     System.out.println("以上是我获取图片路径的组成的数组的长度...");
                     String newsPicDes=o7[5].toString();
                     String[] pic=newsPicDes.split(",");
                     String des=pic[0];
%>                      <tr>
                              <%
                              System.out.println("这是执行判断语句之前....");
                               %>
                              <%
                              if(path1.length>0){
                              System.out.println("这是有图片的时候....");
                               %>
                                <td width="90" height="98" rowspan="2" align="left" valign="middle">
                                <a href="newsInfo.do?method=exec&id=<%=o7[3] %>&count=<%=o7[4] %>&model=中国名村" >
                                <img src="files/<%=path1[0] %>" width="81" height="96" border="0" alt="<%=des %>"/></a>
                                </td>
                                <%
                                }
                                else(path1.length<=0){
                                 System.out.println("暂无图片");
                                 %>
                                
                                 <td width="90" height="98" rowspan="2" align="left" valign="middle">
                                暂<br/>无<br/>图<br/>片
                                </td>
                                 <%
                                 }
                                  %>
                              <td width="106" height="24" align="left" valign="middle" class="textzgmc6"><a href="newsInfo.do?method=exec&id=<%=o7[3] %>&count=<%=o7[4] %>&model=中国名村"><%=o7[0] %></a></td>
                            </tr>
不知怎么回事,当后台上传的有图片的时候,就执行if里面的语句,但是没有图片的时候,else里面的语句就不执行,急急!!望高手相助!!!谢谢了!!!

Answer 1

if(path1.length>0){ 
...
}else(path1.length <=0){ 
...
}这个else有问题吧。。不用加(path1.length <=0)这个条件吧
LZ还要小心path1为空的情况...

Answer 2

复制时错了,是else if(path1.length<=0){}或者else{}都不执行...纳闷!!!!

Answer 3

没有图片的时候path1为空，你的else有问题呀，不应该后面直接加条件的，除非你嵌套if再进一步判断，或者直接去掉else后面的条件

Answer 4

LZ我试了下
如果newsPath="";
path1.length=1;
所以if(path1.length>1){ 这个地方要大于1才行的你在试下

Answer 5

if(path1.length>0){ 
//有图片路径一定存在吗？
}else(path1.length <=0){ 
//(path1.length <=0)纯粹多余吧？
} 
else有问题，可以先输出一下没有图片情况下的path1.length 的值，你会发现你在else后面加的判断是错误的，
要想加也是加上path1.length =-1，所以建议不要加，这样会更加全面。

Answer 6

要确保path1不为空呀！首先判断