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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>FileItemHeadersImpl xref</title><link type="text/css" rel="stylesheet" href="../../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../../apidocs/org/apache/commons/fileupload/util/FileItemHeadersImpl.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="jxr_comment">/*</em><a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em><a name="3" href="#3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em><a name="4" href="#4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em><a name="5" href="#5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em><a name="6" href="#6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em><a name="7" href="#7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em><a name="8" href="#8">8</a> <em class="jxr_comment"> *</em><a name="9" href="#9">9</a> <em class="jxr_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="10" href="#10">10</a> <em class="jxr_comment"> *</em><a name="11" href="#11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em><a name="12" href="#12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em><a name="13" href="#13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em><a name="14" href="#14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em><a name="15" href="#15">15</a> <em class="jxr_comment"> * limitations under the License.</em><a name="16" href="#16">16</a> <em class="jxr_comment"> */</em><a name="17" href="#17">17</a> <strong class="jxr_keyword">package</strong> org.apache.commons.fileupload.util;<a name="18" href="#18">18</a> <a name="19" href="#19">19</a> <strong class="jxr_keyword">import</strong> java.io.Serializable;<a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;<a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> java.util.Collections;<a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.util.HashMap;<a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.util.Iterator;<a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.util.List;<a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.Map;<a name="26" href="#26">26</a> <a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.commons.fileupload.FileItemHeaders;<a name="28" href="#28">28</a> <a name="29" href="#29">29</a> <em class="jxr_javadoccomment">/**</em><a name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * Default implementation of the {@link FileItemHeaders} interface.</em><a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> *</em><a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * @author Michael C. Macaluso</em><a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * @since 1.3</em><a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> */</em><a name="35" href="#35">35</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/commons/fileupload/util/FileItemHeadersImpl.html">FileItemHeadersImpl</a> implements FileItemHeaders, Serializable {<a name="36" href="#36">36</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> serialVersionUID = -4455695752627032559L;<a name="37" href="#37">37</a> <a name="38" href="#38">38</a> <em class="jxr_javadoccomment">/**</em><a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * Map of <code>String</code> keys to a <code>List</code> of</em><a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * <code>String</code> instances.</em><a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> */</em><a name="42" href="#42">42</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map headerNameToValueListMap = <strong class="jxr_keyword">new</strong> HashMap();<a name="43" href="#43">43</a> <a name="44" href="#44">44</a> <em class="jxr_javadoccomment">/**</em><a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * List to preserve order of headers as added. This would not be</em><a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * needed if a <code>LinkedHashMap</code> could be used, but don't</em><a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * want to depend on 1.4.</em><a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> */</em><a name="49" href="#49">49</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> List headerNameList = <strong class="jxr_keyword">new</strong> ArrayList();<a name="50" href="#50">50</a> <a name="51" href="#51">51</a> <strong class="jxr_keyword">public</strong> String getHeader(String name) {<a name="52" href="#52">52</a> String nameLower = name.toLowerCase();<a name="53" href="#53">53</a> List headerValueList = (List) headerNameToValueListMap.get(nameLower);<a name="54" href="#54">54</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">null</strong> == headerValueList) {<a name="55" href="#55">55</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;<a name="56" href="#56">56</a> }<a name="57" href="#57">57</a> <strong class="jxr_keyword">return</strong> (String) headerValueList.get(0);<a name="58" href="#58">58</a> }<a name="59" href="#59">59</a> <a name="60" href="#60">60</a> <strong class="jxr_keyword">public</strong> Iterator getHeaderNames() {<a name="61" href="#61">61</a> <strong class="jxr_keyword">return</strong> headerNameList.iterator();<a name="62" href="#62">62</a> }<a name="63" href="#63">63</a> <a name="64" href="#64">64</a> <strong class="jxr_keyword">public</strong> Iterator getHeaders(String name) {<a name="65" href="#65">65</a> String nameLower = name.toLowerCase();<a name="66" href="#66">66</a> List headerValueList = (List) headerNameToValueListMap.get(nameLower);<a name="67" href="#67">67</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">null</strong> == headerValueList) {<a name="68" href="#68">68</a> <strong class="jxr_keyword">return</strong> Collections.EMPTY_LIST.iterator();<a name="69" href="#69">69</a> }<a name="70" href="#70">70</a> <strong class="jxr_keyword">return</strong> headerValueList.iterator();<a name="71" href="#71">71</a> }<a name="72" href="#72">72</a> <a name="73" href="#73">73</a> <em class="jxr_javadoccomment">/**</em><a name="74" href="#74">74</a> <em class="jxr_javadoccomment"> * Method to add header values to this instance.</em><a name="75" href="#75">75</a> <em class="jxr_javadoccomment"> *</em><a name="76" href="#76">76</a> <em class="jxr_javadoccomment"> * @param name name of this header</em><a name="77" href="#77">77</a> <em class="jxr_javadoccomment"> * @param value value of this header</em><a name="78" href="#78">78</a> <em class="jxr_javadoccomment"> */</em><a name="79" href="#79">79</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> addHeader(String name, String value) {<a name="80" href="#80">80</a> String nameLower = name.toLowerCase();<a name="81" href="#81">81</a> List headerValueList = (List) headerNameToValueListMap.get(nameLower);<a name="82" href="#82">82</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">null</strong> == headerValueList) {<a name="83" href="#83">83</a> headerValueList = <strong class="jxr_keyword">new</strong> ArrayList();<a name="84" href="#84">84</a> headerNameToValueListMap.put(nameLower, headerValueList);<a name="85" href="#85">85</a> headerNameList.add(nameLower);<a name="86" href="#86">86</a> }<a name="87" href="#87">87</a> headerValueList.add(value);<a name="88" href="#88">88</a> }<a name="89" href="#89">89</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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