atom03parser.html

解析RSS工具源码

<a name="170" href="#170">170</a>             Element eLink = (Element) eLinks.get(i);
<a name="171" href="#171">171</a>             <em class="comment">//Namespace ns = getAtomNamespace();</em>
<a name="172" href="#172">172</a>             String rel = eLink.getAttributeValue(<span class="string">"rel"</span>);<em class="comment">//getAtomNamespace()); DONT KNOW WHY DOESN'T WORK</em>
<a name="173" href="#173">173</a>             <strong>if</strong> (alternate) {
<a name="174" href="#174">174</a>                 <strong>if</strong> (<span class="string">"alternate"</span>.equals(rel)) {
<a name="175" href="#175">175</a>                     links.add(parseLink(eLink));
<a name="176" href="#176">176</a>                 }
<a name="177" href="#177">177</a>             }
<a name="178" href="#178">178</a>             <strong>else</strong> {
<a name="179" href="#179">179</a>                 <strong>if</strong> (!(<span class="string">"alternate"</span>.equals(rel))) {
<a name="180" href="#180">180</a>                     links.add(parseLink(eLink));
<a name="181" href="#181">181</a>                 }
<a name="182" href="#182">182</a>             }
<a name="183" href="#183">183</a>         }
<a name="184" href="#184">184</a>         <strong>return</strong> (links.size()>0) ? links : <strong>null</strong>;
<a name="185" href="#185">185</a>     }
<a name="186" href="#186">186</a> 
<a name="187" href="#187">187</a>     <em class="comment">// List(Elements) -> List(Link)</em>
<a name="188" href="#188">188</a>     <strong>private</strong> List parseAlternateLinks(List eLinks) {
<a name="189" href="#189">189</a>         <strong>return</strong> parseLinks(eLinks,<strong>true</strong>);
<a name="190" href="#190">190</a>     }
<a name="191" href="#191">191</a> 
<a name="192" href="#192">192</a>     <em class="comment">// List(Elements) -> List(Link)</em>
<a name="193" href="#193">193</a>     <strong>private</strong> List parseOtherLinks(List eLinks) {
<a name="194" href="#194">194</a>         <strong>return</strong> parseLinks(eLinks,false);
<a name="195" href="#195">195</a>     }
<a name="196" href="#196">196</a> 
<a name="197" href="#197">197</a>     <strong>private</strong> <a href="../../../../../com/sun/syndication/feed/atom/Person.html">Person</a> parsePerson(Element ePerson) {
<a name="198" href="#198">198</a>         <a href="../../../../../com/sun/syndication/feed/atom/Person.html">Person</a> person = <strong>new</strong> <a href="../../../../../com/sun/syndication/feed/atom/Person.html">Person</a>();
<a name="199" href="#199">199</a>         Element e = ePerson.getChild(<span class="string">"name"</span>,getAtomNamespace());
<a name="200" href="#200">200</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="201" href="#201">201</a>             person.setName(e.getText());
<a name="202" href="#202">202</a>         }
<a name="203" href="#203">203</a>         e = ePerson.getChild(<span class="string">"url"</span>,getAtomNamespace());
<a name="204" href="#204">204</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="205" href="#205">205</a>             person.setUrl(e.getText());
<a name="206" href="#206">206</a>         }
<a name="207" href="#207">207</a>         e = ePerson.getChild(<span class="string">"email"</span>,getAtomNamespace());
<a name="208" href="#208">208</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="209" href="#209">209</a>             person.setEmail(e.getText());
<a name="210" href="#210">210</a>         }
<a name="211" href="#211">211</a>         <strong>return</strong> person;
<a name="212" href="#212">212</a>     }
<a name="213" href="#213">213</a> 
<a name="214" href="#214">214</a>     <em class="comment">// List(Elements) -> List(Persons)</em>
<a name="215" href="#215">215</a>     <strong>private</strong> List parsePersons(List ePersons) {
<a name="216" href="#216">216</a>         List persons = <strong>new</strong> ArrayList();
<a name="217" href="#217">217</a>         <strong>for</strong> (<strong>int</strong> i=0;i&lt;ePersons.size();i++) {
<a name="218" href="#218">218</a>             persons.add(parsePerson((Element)ePersons.get(i)));
<a name="219" href="#219">219</a>         }
<a name="220" href="#220">220</a>         <strong>return</strong> (persons.size()>0) ? persons : <strong>null</strong>;
<a name="221" href="#221">221</a>     }
<a name="222" href="#222">222</a> 
<a name="223" href="#223">223</a>     <strong>private</strong> <a href="../../../../../com/sun/syndication/feed/atom/Content.html">Content</a> parseContent(Element e) {
<a name="224" href="#224">224</a>         String value = <strong>null</strong>;
<a name="225" href="#225">225</a>         String type = e.getAttributeValue(<span class="string">"type"</span>);<em class="comment">//getAtomNamespace()); DONT KNOW WHY DOESN'T WORK</em>
<a name="226" href="#226">226</a>         type = (type!=<strong>null</strong>) ? type : <span class="string">"text/plain"</span>;
<a name="227" href="#227">227</a>         String mode = e.getAttributeValue(<span class="string">"mode"</span>);<em class="comment">//getAtomNamespace())); DONT KNOW WHY DOESN'T WORK</em>
<a name="228" href="#228">228</a>         <strong>if</strong> (mode == <strong>null</strong>) {
<a name="229" href="#229">229</a>             mode = Content.XML; <em class="comment">// default to xml content</em>
<a name="230" href="#230">230</a>         }
<a name="231" href="#231">231</a>         <strong>if</strong> (mode.equals(Content.ESCAPED)) {
<a name="232" href="#232">232</a>             <em class="comment">// do nothing XML Parser took care of this</em>
<a name="233" href="#233">233</a>             value = e.getText();
<a name="234" href="#234">234</a>         }
<a name="235" href="#235">235</a>         <strong>else</strong>
<a name="236" href="#236">236</a>         <strong>if</strong> (mode.equals(Content.BASE64)) {
<a name="237" href="#237">237</a>                 value = Base64.decode(e.getText());
<a name="238" href="#238">238</a>         }
<a name="239" href="#239">239</a>         <strong>else</strong>
<a name="240" href="#240">240</a>         <strong>if</strong> (mode.equals(Content.XML)) {
<a name="241" href="#241">241</a>             XMLOutputter outputter = <strong>new</strong> XMLOutputter();
<a name="242" href="#242">242</a>             List eContent = e.getContent();
<a name="243" href="#243">243</a>             Iterator i = eContent.iterator();
<a name="244" href="#244">244</a>             <strong>while</strong> (i.hasNext()) {
<a name="245" href="#245">245</a>                 org.jdom.Content c = (org.jdom.Content) i.next();
<a name="246" href="#246">246</a>                 <strong>if</strong> (c instanceof Element) {
<a name="247" href="#247">247</a>                     Element eC = (Element) c;
<a name="248" href="#248">248</a>                     <strong>if</strong> (eC.getNamespace().equals(getAtomNamespace())) {
<a name="249" href="#249">249</a>                         ((Element)c).setNamespace(Namespace.NO_NAMESPACE);
<a name="250" href="#250">250</a>                     }
<a name="251" href="#251">251</a>                 }
<a name="252" href="#252">252</a>             }
<a name="253" href="#253">253</a>             value = outputter.outputString(eContent);
<a name="254" href="#254">254</a>         }
<a name="255" href="#255">255</a> 
<a name="256" href="#256">256</a>         <a href="../../../../../com/sun/syndication/feed/atom/Content.html">Content</a> content = <strong>new</strong> <a href="../../../../../com/sun/syndication/feed/atom/Content.html">Content</a>();
<a name="257" href="#257">257</a>         content.setType(type);
<a name="258" href="#258">258</a>         content.setMode(mode);
<a name="259" href="#259">259</a>         content.setValue(value);
<a name="260" href="#260">260</a>         <strong>return</strong> content;
<a name="261" href="#261">261</a>     }
<a name="262" href="#262">262</a> 
<a name="263" href="#263">263</a>     <em class="comment">// List(Elements) -> List(Entries)</em>
<a name="264" href="#264">264</a>     <strong>private</strong> List parseEntries(List eEntries) {
<a name="265" href="#265">265</a>         List entries = <strong>new</strong> ArrayList();
<a name="266" href="#266">266</a>         <strong>for</strong> (<strong>int</strong> i=0;i&lt;eEntries.size();i++) {
<a name="267" href="#267">267</a>             entries.add(parseEntry((Element)eEntries.get(i)));
<a name="268" href="#268">268</a>         }
<a name="269" href="#269">269</a>         <strong>return</strong> (entries.size()>0) ? entries : <strong>null</strong>;
<a name="270" href="#270">270</a>     }
<a name="271" href="#271">271</a> 
<a name="272" href="#272">272</a>     <strong>private</strong> <a href="../../../../../com/sun/syndication/feed/atom/Entry.html">Entry</a> parseEntry(Element eEntry) {
<a name="273" href="#273">273</a>         <a href="../../../../../com/sun/syndication/feed/atom/Entry.html">Entry</a> entry = <strong>new</strong> <a href="../../../../../com/sun/syndication/feed/atom/Entry.html">Entry</a>();
<a name="274" href="#274">274</a> 
<a name="275" href="#275">275</a>         Element e = eEntry.getChild(<span class="string">"title"</span>,getAtomNamespace());
<a name="276" href="#276">276</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="277" href="#277">277</a>             entry.setTitle(e.getText());
<a name="278" href="#278">278</a>         }
<a name="279" href="#279">279</a> 
<a name="280" href="#280">280</a>         List eList = eEntry.getChildren(<span class="string">"link"</span>,getAtomNamespace());
<a name="281" href="#281">281</a>         entry.setAlternateLinks(parseAlternateLinks(eList));
<a name="282" href="#282">282</a>         entry.setOtherLinks(parseOtherLinks(eList));
<a name="283" href="#283">283</a> 
<a name="284" href="#284">284</a>         e = eEntry.getChild(<span class="string">"author"</span>,getAtomNamespace());
<a name="285" href="#285">285</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="286" href="#286">286</a>             List authors = <strong>new</strong> ArrayList();
<a name="287" href="#287">287</a>             authors.add(parsePerson(e));
<a name="288" href="#288">288</a>             entry.setAuthors(authors);
<a name="289" href="#289">289</a>         }
<a name="290" href="#290">290</a> 
<a name="291" href="#291">291</a>         eList = eEntry.getChildren(<span class="string">"contributor"</span>,getAtomNamespace());
<a name="292" href="#292">292</a>         <strong>if</strong> (eList.size()>0) {
<a name="293" href="#293">293</a>             entry.setContributors(parsePersons(eList));
<a name="294" href="#294">294</a>         }
<a name="295" href="#295">295</a> 
<a name="296" href="#296">296</a>         e = eEntry.getChild(<span class="string">"id"</span>,getAtomNamespace());
<a name="297" href="#297">297</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="298" href="#298">298</a>             entry.setId(e.getText());
<a name="299" href="#299">299</a>         }
<a name="300" href="#300">300</a> 
<a name="301" href="#301">301</a>         e = eEntry.getChild(<span class="string">"modified"</span>,getAtomNamespace());
<a name="302" href="#302">302</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="303" href="#303">303</a>             entry.setModified(DateParser.parseDate(e.getText()));
<a name="304" href="#304">304</a>         }
<a name="305" href="#305">305</a> 
<a name="306" href="#306">306</a>         e = eEntry.getChild(<span class="string">"issued"</span>,getAtomNamespace());
<a name="307" href="#307">307</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="308" href="#308">308</a>             entry.setIssued(DateParser.parseDate(e.getText()));
<a name="309" href="#309">309</a>         }
<a name="310" href="#310">310</a> 
<a name="311" href="#311">311</a>         e = eEntry.getChild(<span class="string">"created"</span>,getAtomNamespace());
<a name="312" href="#312">312</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="313" href="#313">313</a>             entry.setCreated(DateParser.parseDate(e.getText()));
<a name="314" href="#314">314</a>         }
<a name="315" href="#315">315</a> 
<a name="316" href="#316">316</a>         e = eEntry.getChild(<span class="string">"summary"</span>,getAtomNamespace());
<a name="317" href="#317">317</a>         <strong>if</strong> (e!=<strong>null</strong>) {
<a name="318" href="#318">318</a>             entry.setSummary(parseContent(e));
<a name="319" href="#319">319</a>         }
<a name="320" href="#320">320</a> 
<a name="321" href="#321">321</a>         eList = eEntry.getChildren(<span class="string">"content"</span>,getAtomNamespace());
<a name="322" href="#322">322</a>         <strong>if</strong> (eList.size()>0) {
<a name="323" href="#323">323</a>             List content = <strong>new</strong> ArrayList();
<a name="324" href="#324">324</a>             <strong>for</strong> (<strong>int</strong> i=0;i&lt;eList.size();i++) {
<a name="325" href="#325">325</a>                 content.add(parseContent((Element)eList.get(i)));
<a name="326" href="#326">326</a>             }
<a name="327" href="#327">327</a>             entry.setContents(content);
<a name="328" href="#328">328</a>         }
<a name="329" href="#329">329</a> 
<a name="330" href="#330">330</a>         entry.setModules(parseItemModules(eEntry));
<a name="331" href="#331">331</a> 
<a name="332" href="#332">332</a>         List foreignMarkup = 
<a name="333" href="#333">333</a>             extractForeignMarkup(eEntry, entry, getAtomNamespace());
<a name="334" href="#334">334</a>         <strong>if</strong> (foreignMarkup.size() > 0) {
<a name="335" href="#335">335</a>             entry.setForeignMarkup(foreignMarkup);
<a name="336" href="#336">336</a>         } 
<a name="337" href="#337">337</a>         <strong>return</strong> entry;
<a name="338" href="#338">338</a>     }
<a name="339" href="#339">339</a> 
<a name="340" href="#340">340</a> 
<a name="341" href="#341">341</a> }
</pre>
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