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📁 struts开发实例
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<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; {</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
errors.add(ActionErrors.GLOBAL_ERROR,</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; new 
ActionError(&quot;error.password.mismatch&quot;));</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; }</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; // Report any errors we have 
discovered back to the original form</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; if (!errors.isEmpty()) {</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; saveErrors(request, errors);</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return 
(mapping.getInputForward());</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; }</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; // Save our logged-in user in the 
session</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; HttpSession session = 
request.getSession();</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; </span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp; 
session.setAttribute(Constants.USER_KEY, username);</span></b></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; if (log.isDebugEnabled()) {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; log.debug(&quot;LogonAction: 
User '&quot; + username +</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &quot;' logged on in 
session &quot; + session.getId());</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // Remove the obsolete form 
bean</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; if (mapping.getAttribute() != 
null) {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if 
(&quot;request&quot;.equals(mapping.getScope()))</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
request.removeAttribute(mapping.getAttribute());</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; else</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
session.removeAttribute(mapping.getAttribute());</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp; </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; // Forward control to the 
specified success URI</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; return 
(mapping.findForward(&quot;success&quot;));</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; }</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; public boolean CheckUser(String 
username,String password)</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; &nbsp; Connection con = null;&nbsp;&nbsp;&nbsp;
</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; &nbsp; try </span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; </span><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;con = pool.getConnection();</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; String sql = &quot;SELECT * from 
dbo.users&nbsp; WHERE username = ? AND password= ?&quot;;</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PreparedStatement ps = null;</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ResultSet rs = null;</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; try {</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (con.isClosed()) {</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; throw new 
IllegalStateException(&quot;error.con.isClosed&quot;);</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps = 
con.prepareStatement(sql);</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;ps.setString(1,username);</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps.setString(2,password);</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; rs = ps.executeQuery();</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp; </span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if(rs.next())</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; { </span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return true;</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></b></p>
<p class="MsoNormal" style="text-indent: 21.1pt"><b>
<span lang="EN-US" style="font-family: 黑体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return false;</span></b></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; } catch (SQLException e) {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;e.printStackTrace();</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; throw new 
RuntimeException(&quot;error.ps.executeQuery&quot;);</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; } finally {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; try {</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
<span lang="EN-US" style="font-family: 宋体">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (ps != null)</span></p>
<p class="MsoNormal" style="text-indent: 21.0pt">
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