<s:iterator>迭代一行4列

<table border="1">
      <s:iterator value="xxx" status="status" >
            <s:if "#status.index % 4 == 0">
                  <tr>
            </s:if>
            <td>
                  <s:property value="输出数据" />
            </td>
            <s:if "#status.index % 4 == 3 || #status.last">
                  </tr>
            </s:if>
      </s:iterator>
</table>

(gdb) bt #0 0x005cd5ff in std::_Rb_tree_decrement(std::_Rb_tree_node_base*) () from /usr/lib/libstdc++.so.6 #1 0x080e3b15 in std::_Rb_tree_iterator<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement> >::operator-- (this=0xbfbacdc4) at /usr/lib/gcc/i686-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_tree.h:199 #2 0x080e3873 in std::_Rb_tree<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement>, std::_Select1st<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement> >, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement> > >::_M_insert_unique (this=0x89b53a0, __v=...) at /usr/lib/gcc/i686-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_tree.h:1179 #3 0x080e31df in std::_Rb_tree<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement>, std::_Select1st<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement> >, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement> > >::_M_insert_unique_ (this=0x89b53a0, __position=..., __v=...) at /usr/lib/gcc/i686-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_tree.h:1217 #4 0x080e2ee7 in std::map<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, STDTM::AlarmElement, std::less<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, STDTM::AlarmElement> > >::insert (this=0x89b53a0, __position=..., __x=...) at /usr/lib/gcc/i686-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_map.h:540
06-13
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