隨筆檔案

<SCRIPT language=javascript1.2>
function showsubmenu(sid)
{
whichEl = eval("submenu" + sid);
if (whichEl.style.display == "none")
{
eval("submenu" + sid + ".style.display=\"\";");
}
else
{
eval("submenu" + sid + ".style.display=\"none\";");
}
}
</SCRIPT>


用法：

<tr>
??????????? <td height="26" background="../image/menu.gif" id="menuTitle1" onClick="showsubmenu(1)" style="cursor:hand;">&nbsp;&nbsp;&nbsp;
??????????? <font color="#FF9900">■&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FFFFFF"><strong>知識庫分類</strong></font>
??????????? </td>
????????? </tr>
????????? <tr>
<td style="display:none" id='submenu1'>
???? <table cellspacing="0" align="center" width="100%">
??????????????? <tr>
????????????????? <td class="nav">· <a href="<%=request.getContextPath()%>/knowledge/knowledgeCategoryList.htm?order=list" target="mainFrame">編輯知識庫分類</a></td>
??????????????? </tr>
??????????????? <tr>
????????????????? <td class="nav">· <a href="<%=request.getContextPath()%>/knowledge/knowledgeCategoryList.htm?order=edit" target="mainFrame">新增知識庫分類</a></td>
??????????????? </tr>
????????????? </table> 在很多的列表中，后面的操作一欄會有刪除鏈接，并且會讓你確認。此處的代碼：?
<a href='javascript:deleteCategory("<%=article.getId() %>")'>刪除</a>
?????

javascript函數
<script>
?function deleteCategory(articleId)
?{
??if(confirm('是否真的要刪除該記錄'))
???window.location='<%=request.getContextPath()%>/info/infoArticleEdit.htm?order=delete&articleId='+articleId;
?}
</script>

一些鏈接：
<input class="button3" type=button value="返回" onclick="javascript:window.location='<%=request.getContextPath() %>/info/infoArticleList.htm'">

<td>文件名：<a href='<%=request.getContextPath()%>/info/infoArticleEdit.htm?order=download&fileId=<%=accessory.getId() %>'><%=accessory.getFileExt() %></a>
?????
<c:url value="........" />
??
一些傳值
<input type=hidden name=order value=save>
<input type=hidden name=id value="<c:out value="${infoArticle.id}" />">
<input type=hidden name=navId value="<%=request.getParameter("navId") %>">
<input type=hidden name=fileCount value=1>

頁面代碼：
<!--? 這個是顯示的多選框頁面 已有的角色要打勾，可以重新選擇角色-->
<form action="<c:url value="/sys/userRolesEdit.htm"/>" method="post" >

????? <table class="grid" width="100%" cellspacing="1">
?????
??? <tr>
?????? <td colspan="6" class="title">
????????? 角色列表
?????? </td>
??? </tr>
??? <tr>
??? ? <td class="column"></td>
?????? <td class="column">角色ID</td>
?????? <td class="column">角色名</td>
?????? <td class="column">角色代碼</td>
?????? <td class="column">角色描述</td>??????

??? </tr>

??? <!-- 循環顯示列表userRoles的每一項，并判斷如果數據庫中已有的打勾<c:if test標簽正確才執行中間的代碼-->
??? <c:forEach items="${roles}" var="item">????
???<tr>??????
???? <td>
???? <input type="checkbox" name="rolesId" <c:forEach items="${userRoles}" var = "selectedRoles">
???? <c:if test="${item.srolId == selectedRoles.srolId}">checked="true"</c:if></c:forEach>
????? value="<c:out value="${item.srolId}"/>" />
???? </td>
???
???? <td><c:out value="${item.srolId}"/></td>
??????? <td><c:out value="${item.srolName}"/> </td>
???????????????? <td><c:out value="${item.srolCode}"/></td>
???????????????? <td><c:out value="${item.srolDesc}"/></td>????????????????
???? <tr>???????
??? </c:forEach> ??
???
??? <tr>

?????? <td colspan="6" class="nav">&nbsp;
?????? ??? <input type="hidden" name="userID"
???value=<c:out value="${userInfo.suinId}"/>>
????? <input type="submit" class="button3" value="提交"/>
????? <INPUT type="button" class="button2" value="返回" onclick="history.back()" />
?????
?????? </td>
??? </tr>
?? </table>?
?? </form>

控制器代碼：
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
??// TODO Auto-generated method stub
??
??Map result = new HashMap();
??
??SysUserinfo userInfo = null;
??????? String id = request.getParameter("userID");

??????? System.out.println(id);
??????? if (id != null && !id.equals(""))
??????? {
??????????? userInfo = (SysUserinfo) sysService.get(SysUserinfo.class,
??????????????????? new Long(id));
???????????
??????? }
??????? else
??????? {
???????????
??????? }
???????
??????? result.put("userInfo", userInfo);
??????? result.put("roles", sysService.getSupportData("SysRole", null));
??????? if (userInfo != null)
??????? {
??????? ?result.put("userRoles", sysService.getUserRoles(userInfo));
??????? }
???????
?
???????
??????? SysUserRole sysUserRole = null;
??????? SysRole sysRole = null;
??????? String roleId = null;
???????
??????? // 記錄父列表ID
??????? result.put("parentlistID", request.getParameter("parentlistID"));
??????? result.put("userInfo", userInfo);
????????
?????????//遍歷所有map里的key
??????? Iterator it = result.keySet().iterator();
??????? while (it.hasNext())
??????? {
??????????? String key = (String) it.next();
??????????? request.setAttribute(key, result.get(key));
??????? }
????????
?????????//這里就是從列表多選框傳過來的數值。根據name屬性獲得所有的value
??????? String[] rolesId = null;
??????? rolesId = request.getParameterValues("rolesId");
??????? System.out.println("------------------------" + rolesId + "-------------------");
???????
??????? if (rolesId == null || rolesId.equals(null))
??????? {
??????? ?return new ModelAndView(formView);
??????? }
???????
??????? else
??????? {?????
??????? ?List userRoles = (List)sysService
??????? ??.getUsersUserRoles(userInfo.getSuinId());

??????//先刪除數據庫中所有的，再插入所選的值
?????????for (int k = 0; k < userRoles.size(); k++)
??? ??{
??? ???SysUserRole userRole = (SysUserRole)userRoles.get(k);?? ???
??? ???sysService.delete(userRole);
??? ???
??? ??}
??????? ?
??????? ?for (int i = 0; i < rolesId.length; i++)
??????? ?{
??????? ??roleId = rolesId[i];
??????? ??
??????? ??sysRole = (SysRole)sysService.get(SysRole.class, new Long(roleId));
??????? ??sysUserRole = new SysUserRole();
??????? ??sysUserRole.setUser(userInfo);
??????? ??sysUserRole.setRole(sysRole);
??????? ??sysService.save(sysUserRole);?????? ?
??????? ?}

?????????//如果在###-servlet.xml配置文件中，successView不能傳遞參數，可在這里直接有response導向別的頁面
?????????response.sendRedirect(request.getContextPath()
??????? ???+ "/sys/userRolesList.htm?userID=" + userInfo.getSuinId().toString());
??????? ?return null;
??????? }

?}

StringTokenizer：字符串分隔解析類型
屬于：java.util包。

１、構造函數。

1. StringTokenizer(String str) ：構造一個用來解析str的StringTokenizer對象。java默認的分隔符是“空格”、“制表符(‘\t’)”、“換行符(‘\n’)”、“回車符(‘\r’)”。
2. StringTokenizer(String str, String delim) ：構造一個用來解析str的StringTokenizer對象，并提供一個指定的分隔符。
3. StringTokenizer(String str, String delim, boolean returnDelims) ：構造一個用來解析str的StringTokenizer對象，并提供一個指定的分隔符，同時，指定是否返回分隔符。

２、方法。
說明：
1. 所有方法均為public；
2. 書寫格式：［修飾符］　<返回類型> <方法名（［參數列表］）>
如：
static int parseInt(String s) 表示：此方法（parseInt）為類方法（static），返回類型為（int），方法所需參數為String類型。

1. int countTokens() ：返回nextToken方法被調用的次數。如果采用構造函數1和2，返回的就是分隔符數量(例2)。
2. boolean hasMoreTokens() ：返回是否還有分隔符。
3. boolean hasMoreElements() ：結果同2。
4. String nextToken() ：返回從當前位置到下一個分隔符的字符串。
5. Object nextElement() ：結果同4。
6. String nextToken(String delim) ：與4類似，以指定的分隔符返回結果。

例子：

		String s = new String("The Java platform is the ideal platform for network computing");
		StringTokenizer st = new StringTokenizer(s);
		System.out.println( "Token Total: " + st.countTokens() );
		while( st.hasMoreElements() ){
			System.out.println( st.nextToken() );
　　　　　　　　　　　}
結果為：
Token Total: 10
The
Java
platform
is
the
ideal
platform
for
network
computing

例2:

		String s = new String("The=Java=platform=is=the=ideal=platform=for=network=computing");
		StringTokenizer st = new StringTokenizer(s,"=",true);
		System.out.println( "Token Total: " + st.countTokens() );
		while( st.hasMoreElements() ){
			System.out.println( st.nextToken() );
		}
結果為：
Token Total: 19
The
=
Java
=
platform
=
is
=
the
=
ideal
=
platform
=
for
=
network
=
computing