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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=UTF-8" /><title>Transform xref</title><link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../apidocs/org/apache/mina/util/Transform.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <strong class="jxr_keyword">package</strong> org.apache.mina.util;<a name="2" href="#2">2</a> <a name="3" href="#3">3</a> <strong class="jxr_keyword">import</strong> java.io.IOException;<a name="4" href="#4">4</a> <strong class="jxr_keyword">import</strong> java.io.LineNumberReader;<a name="5" href="#5">5</a> <strong class="jxr_keyword">import</strong> java.io.PrintWriter;<a name="6" href="#6">6</a> <strong class="jxr_keyword">import</strong> java.io.StringReader;<a name="7" href="#7">7</a> <strong class="jxr_keyword">import</strong> java.io.StringWriter;<a name="8" href="#8">8</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;<a name="9" href="#9">9</a> <a name="10" href="#10">10</a> <em class="jxr_javadoccomment">/**</em><a name="11" href="#11">11</a> <em class="jxr_javadoccomment"> * Utility class for working with xml data</em><a name="12" href="#12">12</a> <em class="jxr_javadoccomment"> *</em><a name="13" href="#13">13</a> <em class="jxr_javadoccomment"> * Implementation is heavily based on org.apache.log4j.helpers.Transform</em><a name="14" href="#14">14</a> <em class="jxr_javadoccomment"> */</em><a name="15" href="#15">15</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/mina/util/Transform.html">Transform</a> {<a name="16" href="#16">16</a> <a name="17" href="#17">17</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String CDATA_START = <span class="jxr_string">"<![CDATA["</span>;<a name="18" href="#18">18</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String CDATA_END = <span class="jxr_string">"]]>"</span>;<a name="19" href="#19">19</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String CDATA_PSEUDO_END = <span class="jxr_string">"]]&gt;"</span>;<a name="20" href="#20">20</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String CDATA_EMBEDED_END = CDATA_END + CDATA_PSEUDO_END + CDATA_START;<a name="21" href="#21">21</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> CDATA_END_LEN = CDATA_END.length();<a name="22" href="#22">22</a> <a name="23" href="#23">23</a> <em class="jxr_javadoccomment">/**</em><a name="24" href="#24">24</a> <em class="jxr_javadoccomment"> * This method takes a string which may contain HTML tags (ie,</em><a name="25" href="#25">25</a> <em class="jxr_javadoccomment"> * &lt;b&gt;, &lt;table&gt;, etc) and replaces any</em><a name="26" href="#26">26</a> <em class="jxr_javadoccomment"> * '<', '>' , '&' or '"'</em><a name="27" href="#27">27</a> <em class="jxr_javadoccomment"> * characters with respective predefined entity references.</em><a name="28" href="#28">28</a> <em class="jxr_javadoccomment"> *</em><a name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * @param input The text to be converted.</em><a name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * @return The input string with the special characters replaced.</em><a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * */</em><a name="32" href="#32">32</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">public</strong> String escapeTags(<strong class="jxr_keyword">final</strong> String input) {<a name="33" href="#33">33</a> <em class="jxr_comment">// Check if the string is null, zero length or devoid of special characters</em><a name="34" href="#34">34</a> <em class="jxr_comment">// if so, return what was sent in.</em><a name="35" href="#35">35</a> <a name="36" href="#36">36</a> <strong class="jxr_keyword">if</strong>(input == <strong class="jxr_keyword">null</strong><a name="37" href="#37">37</a> || input.length() == 0<a name="38" href="#38">38</a> || (input.indexOf('"') == -1 &&<a name="39" href="#39">39</a> input.indexOf('&') == -1 &&<a name="40" href="#40">40</a> input.indexOf('<') == -1 &&<a name="41" href="#41">41</a> input.indexOf('>') == -1)) {<a name="42" href="#42">42</a> <strong class="jxr_keyword">return</strong> input;<a name="43" href="#43">43</a> }<a name="44" href="#44">44</a> <a name="45" href="#45">45</a> StringBuffer buf = <strong class="jxr_keyword">new</strong> StringBuffer(input.length() + 6);<a name="46" href="#46">46</a> <strong class="jxr_keyword">char</strong> ch;<a name="47" href="#47">47</a> <a name="48" href="#48">48</a> <strong class="jxr_keyword">int</strong> len = input.length();<a name="49" href="#49">49</a> <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i=0; i < len; i++) {<a name="50" href="#50">50</a> ch = input.charAt(i);<a name="51" href="#51">51</a> <strong class="jxr_keyword">if</strong> (ch > '>') {<a name="52" href="#52">52</a> buf.append(ch);<a name="53" href="#53">53</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(ch == '<') {<a name="54" href="#54">54</a> buf.append(<span class="jxr_string">"&lt;"</span>);<a name="55" href="#55">55</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(ch == '>') {<a name="56" href="#56">56</a> buf.append(<span class="jxr_string">"&gt;"</span>);<a name="57" href="#57">57</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(ch == '&') {<a name="58" href="#58">58</a> buf.append(<span class="jxr_string">"&amp;"</span>);<a name="59" href="#59">59</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(ch == '"') {<a name="60" href="#60">60</a> buf.append(<span class="jxr_string">"&quot;"</span>);<a name="61" href="#61">61</a> } <strong class="jxr_keyword">else</strong> {<a name="62" href="#62">62</a> buf.append(ch);<a name="63" href="#63">63</a> }<a name="64" href="#64">64</a> }<a name="65" href="#65">65</a> <strong class="jxr_keyword">return</strong> buf.toString();<a name="66" href="#66">66</a> }<a name="67" href="#67">67</a> <a name="68" href="#68">68</a> <em class="jxr_javadoccomment">/**</em><a name="69" href="#69">69</a> <em class="jxr_javadoccomment"> * Ensures that embeded CDEnd strings (]]>) are handled properly</em><a name="70" href="#70">70</a> <em class="jxr_javadoccomment"> * within message, NDC and throwable tag text.</em><a name="71" href="#71">71</a> <em class="jxr_javadoccomment"> *</em><a name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * @param buf StringBuffer holding the XML data to this point. The</em><a name="73" href="#73">73</a> <em class="jxr_javadoccomment"> * initial CDStart (<![CDATA[) and final CDEnd (]]>) of the CDATA</em><a name="74" href="#74">74</a> <em class="jxr_javadoccomment"> * section are the responsibility of the calling method.</em><a name="75" href="#75">75</a> <em class="jxr_javadoccomment"> * @param str The String that is inserted into an existing CDATA Section within buf.</em><a name="76" href="#76">76</a> <em class="jxr_javadoccomment"> * */</em><a name="77" href="#77">77</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> appendEscapingCDATA(<strong class="jxr_keyword">final</strong> StringBuffer buf,<a name="78" href="#78">78</a> <strong class="jxr_keyword">final</strong> String str) {<a name="79" href="#79">79</a> <strong class="jxr_keyword">if</strong> (str != <strong class="jxr_keyword">null</strong>) {<a name="80" href="#80">80</a> <strong class="jxr_keyword">int</strong> end = str.indexOf(CDATA_END);<a name="81" href="#81">81</a> <strong class="jxr_keyword">if</strong> (end < 0) {<a name="82" href="#82">82</a> buf.append(str);<a name="83" href="#83">83</a> } <strong class="jxr_keyword">else</strong> {<a name="84" href="#84">84</a> <strong class="jxr_keyword">int</strong> start = 0;<a name="85" href="#85">85</a> <strong class="jxr_keyword">while</strong> (end > -1) {<a name="86" href="#86">86</a> buf.append(str.substring(start, end));<a name="87" href="#87">87</a> buf.append(CDATA_EMBEDED_END);<a name="88" href="#88">88</a> start = end + CDATA_END_LEN;<a name="89" href="#89">89</a> <strong class="jxr_keyword">if</strong> (start < str.length()) {<a name="90" href="#90">90</a> end = str.indexOf(CDATA_END, start);<a name="91" href="#91">91</a> } <strong class="jxr_keyword">else</strong> {<a name="92" href="#92">92</a> <strong class="jxr_keyword">return</strong>;<a name="93" href="#93">93</a> }<a name="94" href="#94">94</a> }<a name="95" href="#95">95</a> buf.append(str.substring(start));<a name="96" href="#96">96</a> }<a name="97" href="#97">97</a> }<a name="98" href="#98">98</a> }<a name="99" href="#99">99</a> <a name="100" href="#100">100</a> <em class="jxr_javadoccomment">/**</em><a name="101" href="#101">101</a> <em class="jxr_javadoccomment"> * convert a Throwable into an array of Strings</em><a name="102" href="#102">102</a> <em class="jxr_javadoccomment"> * @param throwable</em><a name="103" href="#103">103</a> <em class="jxr_javadoccomment"> * @return string representation of the throwable</em><a name="104" href="#104">104</a> <em class="jxr_javadoccomment"> */</em><a name="105" href="#105">105</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String[] getThrowableStrRep(Throwable throwable) {<a name="106" href="#106">106</a> StringWriter sw = <strong class="jxr_keyword">new</strong> StringWriter();<a name="107" href="#107">107</a> PrintWriter pw = <strong class="jxr_keyword">new</strong> PrintWriter(sw);<a name="108" href="#108">108</a> throwable.printStackTrace(pw);<a name="109" href="#109">109</a> pw.flush();<a name="110" href="#110">110</a> LineNumberReader reader = <strong class="jxr_keyword">new</strong> LineNumberReader(<strong class="jxr_keyword">new</strong> StringReader(sw.toString()));<a name="111" href="#111">111</a> ArrayList<String> lines = <strong class="jxr_keyword">new</strong> ArrayList<String>();<a name="112" href="#112">112</a> <strong class="jxr_keyword">try</strong> {<a name="113" href="#113">113</a> String line = reader.readLine();<a name="114" href="#114">114</a> <strong class="jxr_keyword">while</strong>(line != <strong class="jxr_keyword">null</strong>) {<a name="115" href="#115">115</a> lines.add(line);<a name="116" href="#116">116</a> line = reader.readLine();<a name="117" href="#117">117</a> }<a name="118" href="#118">118</a> } <strong class="jxr_keyword">catch</strong>(IOException ex) {<a name="119" href="#119">119</a> lines.add(ex.toString());<a name="120" href="#120">120</a> }<a name="121" href="#121">121</a> String[] rep = <strong class="jxr_keyword">new</strong> String[lines.size()];<a name="122" href="#122">122</a> lines.toArray(rep);<a name="123" href="#123">123</a> <strong class="jxr_keyword">return</strong> rep;<a name="124" href="#124">124</a> }<a name="125" href="#125">125</a> <a name="126" href="#126">126</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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