📄 in13_logon.htm
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<span lang="EN-US" style="font-family: 宋体"> ps.close();</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> if (rs != null)</span></p>
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<span lang="EN-US" style="font-family: 宋体"> rs.close();</span></p>
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<span lang="EN-US" style="font-family: 宋体"> } catch (SQLException e) {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> e.printStackTrace();</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> throw new
RuntimeException("error.rs.close");</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> }</span></p>
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<span lang="EN-US" style="font-family: 宋体"> }</span></p>
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<span lang="EN-US" style="font-family: 宋体"> </span></p>
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<span lang="EN-US" style="font-family: 宋体"> }</span></p>
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<span lang="EN-US" style="font-family: 宋体"> </span></p>
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<span lang="EN-US" style="font-family: 宋体"> catch (SQLException e) </span>
</p>
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<span lang="EN-US" style="font-family: 宋体"> {</span></p>
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<span lang="EN-US" style="font-family: 宋体"> e.printStackTrace();</span></p>
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<span lang="EN-US" style="font-family: 宋体"> throw new
RuntimeException("Unable to get connection.");</span></p>
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<span lang="EN-US" style="font-family: 宋体"> } </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> finally</span></p>
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<span lang="EN-US" style="font-family: 宋体"> {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> try </span></p>
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<span lang="EN-US" style="font-family: 宋体"> {</span></p>
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<span lang="EN-US" style="font-family: 宋体"> if (con != null)</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> con.close();</span></p>
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<span lang="EN-US" style="font-family: 宋体"> } </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> catch (SQLException e)
</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> throw new
RuntimeException(e.getMessage());</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> }</span></p>
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<span lang="EN-US" style="font-family: 宋体"> }</span></p>
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<span lang="EN-US" style="font-family: 宋体"> </span></p>
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<span lang="EN-US" style="font-family: 宋体"> }</span></p>
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<span lang="EN-US" style="font-family: 宋体"> </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> </span></p>
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<span lang="EN-US" style="font-family: 宋体">}</span></p>
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<span lang="EN-US" style="font-family: 宋体"> </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> </span></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">CheckLogonTag.java文件：</span></b></p>
<p class="MsoNormal" style="text-indent: 21.0pt"><span style="font-family: 宋体">
用于检查用户是否已登陆的自定义标签原代码。</span></p>
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<span lang="EN-US" style="font-family: 宋体">package emptyprj;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">import java.io.IOException;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">import
javax.servlet.ServletException;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">import
javax.servlet.http.HttpSession;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">import
javax.servlet.jsp.JspException;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">import
javax.servlet.jsp.tagext.TagSupport;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">import
org.apache.struts.config.ModuleConfig;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">public final class CheckLogonTag
extends TagSupport {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> private String name =
Constants.USER_KEY;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> private String page =
"/logon.jsp";</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> public String getName() {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> return (this.name);</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> public void setName(String name)
{</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> this.name = name;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> public String getPage() {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> return (this.page);</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> public void setPage(String page)
{</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> this.page = page;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> public int doStartTag() throws
JspException {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> return (SKIP_BODY);</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> public int doEndTag() throws
JspException {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> // Is there a valid user
logged on?</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> boolean valid = false;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体"> </span><b>
<span lang="EN-US" style="font-family: 黑体">HttpSession session =
pageContext.getSession();</span></b></p>
<p class="MsoNormal" style="text-ind⌨️ 快捷键说明
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