📄 requesttovariablefilter.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" /><title>RequestToVariableFilter xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/apache/struts/scripting/RequestToVariableFilter.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="comment">/*</em><a name="2" href="#2">2</a> <em class="comment"> * $Id: RequestToVariableFilter.java 357368 2005-12-17 19:17:51Z mrdon $</em><a name="3" href="#3">3</a> <em class="comment"> *</em><a name="4" href="#4">4</a> <em class="comment"> * Copyright 2000-2004 The Apache Software Foundation.</em><a name="5" href="#5">5</a> <em class="comment"> *</em><a name="6" href="#6">6</a> <em class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</em><a name="7" href="#7">7</a> <em class="comment"> * you may not use this file except in compliance with the License.</em><a name="8" href="#8">8</a> <em class="comment"> * You may obtain a copy of the License at</em><a name="9" href="#9">9</a> <em class="comment"> *</em><a name="10" href="#10">10</a> <em class="comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em><a name="11" href="#11">11</a> <em class="comment"> *</em><a name="12" href="#12">12</a> <em class="comment"> * Unless required by applicable law or agreed to in writing, software</em><a name="13" href="#13">13</a> <em class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em><a name="14" href="#14">14</a> <em class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em><a name="15" href="#15">15</a> <em class="comment"> * See the License for the specific language governing permissions and</em><a name="16" href="#16">16</a> <em class="comment"> * limitations under the License.</em><a name="17" href="#17">17</a> <em class="comment"> */</em><a name="18" href="#18">18</a> <strong>package</strong> <a href="../../../../org/apache/struts/scripting/package-summary.html">org.apache.struts.scripting</a>;<a name="19" href="#19">19</a> <a name="20" href="#20">20</a> <em class="comment">// util imports:</em><a name="21" href="#21">21</a> <strong>import</strong> java.util.Enumeration;<a name="22" href="#22">22</a> <strong>import</strong> java.util.Properties;<a name="23" href="#23">23</a> <a name="24" href="#24">24</a> <em class="comment">// logging imports:</em><a name="25" href="#25">25</a> <strong>import</strong> org.apache.commons.logging.Log;<a name="26" href="#26">26</a> <strong>import</strong> org.apache.commons.logging.LogFactory;<a name="27" href="#27">27</a> <a name="28" href="#28">28</a> <em class="comment">// misc imports:</em><a name="29" href="#29">29</a> <strong>import</strong> javax.servlet.http.HttpServletRequest;<a name="30" href="#30">30</a> <strong>import</strong> org.apache.bsf.BSFException;<a name="31" href="#31">31</a> <strong>import</strong> org.apache.bsf.BSFManager;<a name="32" href="#32">32</a> <a name="33" href="#33">33</a> <a name="34" href="#34">34</a> <em>/**<em>*</em></em><a name="35" href="#35">35</a> <em> * Takes request parameters and declares variables with them. If a variable is</em><a name="36" href="#36">36</a> <em> * already exists with that name, a "_" is prepended to the name. Both Strings</em><a name="37" href="#37">37</a> <em> * and arrays are recognized.</em><a name="38" href="#38">38</a> <em> */</em><a name="39" href="#39">39</a> <strong>public</strong> <strong>class</strong> <a href="../../../../org/apache/struts/scripting/RequestToVariableFilter.html">RequestToVariableFilter</a> implements <a href="../../../../org/apache/struts/scripting/BSFManagerFilter.html">BSFManagerFilter</a> {<a name="40" href="#40">40</a> <a name="41" href="#41">41</a> <em>/**<em>* The logging instance. */</em></em><a name="42" href="#42">42</a> <strong>private</strong> <strong>static</strong> <strong>final</strong> Log LOG = LogFactory.getLog(TestFilter.<strong>class</strong>);<a name="43" href="#43">43</a> <a name="44" href="#44">44</a> <a name="45" href="#45">45</a> <em>/**<em>*</em></em><a name="46" href="#46">46</a> <em> * Initializes the filter.</em><a name="47" href="#47">47</a> <em> *</em><a name="48" href="#48">48</a> <em> *@param name The name of the filter</em><a name="49" href="#49">49</a> <em> *@param props The properties</em><a name="50" href="#50">50</a> <em> */</em><a name="51" href="#51">51</a> <strong>public</strong> <strong>void</strong> init(String name, Properties props) { }<a name="52" href="#52">52</a> <a name="53" href="#53">53</a> <a name="54" href="#54">54</a> <em>/**<em>*</em></em><a name="55" href="#55">55</a> <em> * Applies the filter.</em><a name="56" href="#56">56</a> <em> *</em><a name="57" href="#57">57</a> <em> *@param mgr The bsf manager</em><a name="58" href="#58">58</a> <em> *@return The bsf manager</em><a name="59" href="#59">59</a> <em> */</em><a name="60" href="#60">60</a> <strong>public</strong> BSFManager apply(BSFManager mgr) {<a name="61" href="#61">61</a> HttpServletRequest request =<a name="62" href="#62">62</a> (HttpServletRequest) mgr.lookupBean(<span class="string">"request"</span>);<a name="63" href="#63">63</a> String[] values = <strong>null</strong>;<a name="64" href="#64">64</a> String name = <strong>null</strong>;<a name="65" href="#65">65</a> String newName = <strong>null</strong>;<a name="66" href="#66">66</a> Object o = <strong>null</strong>;<a name="67" href="#67">67</a> <strong>for</strong> (Enumeration e = request.getParameterNames();<a name="68" href="#68">68</a> e.hasMoreElements();) {<a name="69" href="#69">69</a> name = (String) e.nextElement();<a name="70" href="#70">70</a> o = mgr.lookupBean(name);<a name="71" href="#71">71</a> <strong>if</strong> (o == <strong>null</strong>) {<a name="72" href="#72">72</a> newName = name;<a name="73" href="#73">73</a> } <strong>else</strong> {<a name="74" href="#74">74</a> newName = <span class="string">"_"</span> + name;<a name="75" href="#75">75</a> }<a name="76" href="#76">76</a> <a name="77" href="#77">77</a> values = request.getParameterValues(name);<a name="78" href="#78">78</a> <strong>try</strong> {<a name="79" href="#79">79</a> <strong>if</strong> (values.length > 1) {<a name="80" href="#80">80</a> mgr.declareBean(newName, values, values.getClass());<a name="81" href="#81">81</a> <strong>if</strong> (LOG.isDebugEnabled()) {<a name="82" href="#82">82</a> LOG.debug(<span class="string">"creating array var "</span> + newName);<a name="83" href="#83">83</a> }<a name="84" href="#84">84</a> } <strong>else</strong> {<a name="85" href="#85">85</a> mgr.declareBean(newName, values[0], String.<strong>class</strong>);<a name="86" href="#86">86</a> <strong>if</strong> (LOG.isDebugEnabled()) {<a name="87" href="#87">87</a> LOG.debug(<span class="string">"creating string var "</span> + newName);<a name="88" href="#88">88</a> }<a name="89" href="#89">89</a> }<a name="90" href="#90">90</a> } <strong>catch</strong> (BSFException ex) {<a name="91" href="#91">91</a> LOG.warn(<span class="string">"Unable to set variable "</span> + newName, ex);<a name="92" href="#92">92</a> }<a name="93" href="#93">93</a> <a name="94" href="#94">94</a> }<a name="95" href="#95">95</a> <strong>if</strong> (LOG.isDebugEnabled()) {<a name="96" href="#96">96</a> LOG.debug(<span class="string">"Done filtering"</span>);<a name="97" href="#97">97</a> }<a name="98" href="#98">98</a> <strong>return</strong> mgr;<a name="99" href="#99">99</a> }<a name="100" href="#100">100</a> }<a name="101" href="#101">101</a> </pre><hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body></html>⌨️ 快捷键说明
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