<td><a href="del.action?user.userId=<s:property value="userId"/>">删除</a></td>="userId"/ 改单引号试试
<td><a href="del.action?user.userId=<s:property value='userId'/>">删除</a></td>
<td><a href="del.action?user.userId=<s:property value='userId'/>">删除</a></td>
同样的警告: Error setting expression 'user.userId' with value '[Ljava.lang.String;@19f0596'
ognl.OgnlException: target is null for setProperty(null, "userId", [Ljava.lang.String;@19f0596)System.out.println(user.getUserId());取到的是null!求解求解