crawljob.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="400" href="#400">400</a>                 <span class="string">" is corrupt (length is zero)"</span>);
<a name="401" href="#401">401</a>         }
<a name="402" href="#402">402</a>         
<a name="403" href="#403">403</a>         <em class="comment">// Open file. Read data and set up class variables accordingly...</em>
<a name="404" href="#404">404</a>         BufferedReader jobReader =
<a name="405" href="#405">405</a>             <strong>new</strong> BufferedReader(<strong>new</strong> FileReader(jobFile), 4096);
<a name="406" href="#406">406</a>         <em class="comment">// UID</em>
<a name="407" href="#407">407</a>         <strong>this</strong>.UID = jobReader.readLine();
<a name="408" href="#408">408</a>         <em class="comment">// name</em>
<a name="409" href="#409">409</a>         <strong>this</strong>.name = jobReader.readLine();
<a name="410" href="#410">410</a>         <em class="comment">// status</em>
<a name="411" href="#411">411</a>         <strong>this</strong>.status = jobReader.readLine();
<a name="412" href="#412">412</a>         <strong>if</strong>(status.equals(STATUS_ABORTED)==false
<a name="413" href="#413">413</a>                 &amp;&amp; status.equals(STATUS_CREATED)==false
<a name="414" href="#414">414</a>                 &amp;&amp; status.equals(STATUS_DELETED)==false
<a name="415" href="#415">415</a>                 &amp;&amp; status.equals(STATUS_FINISHED)==false
<a name="416" href="#416">416</a>                 &amp;&amp; status.equals(STATUS_FINISHED_ABNORMAL)==false
<a name="417" href="#417">417</a>                 &amp;&amp; status.equals(STATUS_FINISHED_DATA_LIMIT)==false
<a name="418" href="#418">418</a>                 &amp;&amp; status.equals(STATUS_FINISHED_DOCUMENT_LIMIT)==false
<a name="419" href="#419">419</a>                 &amp;&amp; status.equals(STATUS_FINISHED_TIME_LIMIT)==false
<a name="420" href="#420">420</a>                 &amp;&amp; status.equals(STATUS_MISCONFIGURED)==false
<a name="421" href="#421">421</a>                 &amp;&amp; status.equals(STATUS_PAUSED)==false
<a name="422" href="#422">422</a>                 &amp;&amp; status.equals(STATUS_CHECKPOINTING)==false
<a name="423" href="#423">423</a>                 &amp;&amp; status.equals(STATUS_PENDING)==false
<a name="424" href="#424">424</a>                 &amp;&amp; status.equals(STATUS_RUNNING)==false
<a name="425" href="#425">425</a>                 &amp;&amp; status.equals(STATUS_WAITING_FOR_PAUSE)==false
<a name="426" href="#426">426</a>                 &amp;&amp; status.equals(STATUS_PREPARING)==false){
<a name="427" href="#427">427</a>             <em class="comment">// status is invalid. Must be one of the above</em>
<a name="428" href="#428">428</a>             <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/admin/InvalidJobFileException.html">InvalidJobFileException</a>(<span class="string">"Status (line 3) in job file "</span> +
<a name="429" href="#429">429</a>                     <span class="string">"is not valid: '"</span> + status + <span class="string">"'"</span>);
<a name="430" href="#430">430</a>         }
<a name="431" href="#431">431</a>         <em class="comment">// isReadOnly</em>
<a name="432" href="#432">432</a>         String tmp = jobReader.readLine();
<a name="433" href="#433">433</a>         <strong>if</strong>(tmp.equals(<span class="string">"true"</span>)){
<a name="434" href="#434">434</a>             isReadOnly = <strong>true</strong>;
<a name="435" href="#435">435</a>         } <strong>else</strong> <strong>if</strong>(tmp.equals(<span class="string">"false"</span>)){
<a name="436" href="#436">436</a>             isReadOnly = false;
<a name="437" href="#437">437</a>         } <strong>else</strong> {
<a name="438" href="#438">438</a>             <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/admin/InvalidJobFileException.html">InvalidJobFileException</a>(<span class="string">"isReadOnly (line 4) in job"</span> +
<a name="439" href="#439">439</a>                     <span class="string">" file '"</span> + jobFile.getAbsolutePath() + <span class="string">"' is not "</span> +
<a name="440" href="#440">440</a>                     <span class="string">"valid: '"</span> + tmp + <span class="string">"'"</span>);
<a name="441" href="#441">441</a>         }
<a name="442" href="#442">442</a>         <em class="comment">// isRunning</em>
<a name="443" href="#443">443</a>         tmp = jobReader.readLine();
<a name="444" href="#444">444</a>         <strong>if</strong>(tmp.equals(<span class="string">"true"</span>)){
<a name="445" href="#445">445</a>             <strong>this</strong>.isRunning = <strong>true</strong>;
<a name="446" href="#446">446</a>         } <strong>else</strong> <strong>if</strong>(tmp.equals(<span class="string">"false"</span>)){
<a name="447" href="#447">447</a>             <strong>this</strong>.isRunning = false;
<a name="448" href="#448">448</a>         } <strong>else</strong> {
<a name="449" href="#449">449</a>             <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/admin/InvalidJobFileException.html">InvalidJobFileException</a>(<span class="string">"isRunning (line 5) in job "</span> +
<a name="450" href="#450">450</a>                     <span class="string">"file '"</span> + jobFile.getAbsolutePath() + <span class="string">"' is not valid: "</span> +
<a name="451" href="#451">451</a>                     <span class="string">"'"</span> + tmp + <span class="string">"'"</span>);
<a name="452" href="#452">452</a>         }
<a name="453" href="#453">453</a>         <em class="comment">// priority</em>
<a name="454" href="#454">454</a>         tmp = jobReader.readLine();
<a name="455" href="#455">455</a>         <strong>try</strong>{
<a name="456" href="#456">456</a>             <strong>this</strong>.priority = Integer.parseInt(tmp);
<a name="457" href="#457">457</a>         } <strong>catch</strong>(NumberFormatException e){
<a name="458" href="#458">458</a>             <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/admin/InvalidJobFileException.html">InvalidJobFileException</a>(<span class="string">"priority (line 5) in job "</span> +
<a name="459" href="#459">459</a>                     <span class="string">"file '"</span> + jobFile.getAbsolutePath() + <span class="string">"' is not valid: "</span> +
<a name="460" href="#460">460</a>                     <span class="string">"'"</span> + tmp + <span class="string">"'"</span>);
<a name="461" href="#461">461</a>         }
<a name="462" href="#462">462</a>         <em class="comment">// numberOfJournalEntries</em>
<a name="463" href="#463">463</a>         tmp = jobReader.readLine();
<a name="464" href="#464">464</a>         <strong>try</strong>{
<a name="465" href="#465">465</a>             <strong>this</strong>.numberOfJournalEntries = Integer.parseInt(tmp);
<a name="466" href="#466">466</a>         } <strong>catch</strong>(NumberFormatException e){
<a name="467" href="#467">467</a>             <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/admin/InvalidJobFileException.html">InvalidJobFileException</a>(<span class="string">"numberOfJournalEntries "</span> +
<a name="468" href="#468">468</a>                     <span class="string">"(line 5) in job file '"</span> + jobFile.getAbsolutePath() +
<a name="469" href="#469">469</a>                     <span class="string">"' is not valid: "</span> + <span class="string">"'"</span> + tmp + <span class="string">"'"</span>);
<a name="470" href="#470">470</a>         }
<a name="471" href="#471">471</a>         <em class="comment">// settingsHandler</em>
<a name="472" href="#472">472</a>         tmp = jobReader.readLine();
<a name="473" href="#473">473</a>         <strong>try</strong> {
<a name="474" href="#474">474</a>             File f = <strong>new</strong> File(tmp);
<a name="475" href="#475">475</a>             <strong>this</strong>.settingsHandler = <strong>new</strong> <a href="../../../../org/archive/crawler/settings/XMLSettingsHandler.html">XMLSettingsHandler</a>((f.isAbsolute())?
<a name="476" href="#476">476</a>                 f: <strong>new</strong> File(jobDir, f.getName()));
<a name="477" href="#477">477</a>             <strong>if</strong>(<strong>this</strong>.errorHandler != <strong>null</strong>){
<a name="478" href="#478">478</a>                 <strong>this</strong>.settingsHandler.registerValueErrorHandler(errorHandler);
<a name="479" href="#479">479</a>             }
<a name="480" href="#480">480</a>             <strong>this</strong>.settingsHandler.initialize();
<a name="481" href="#481">481</a>         } <strong>catch</strong> (InvalidAttributeValueException e1) {
<a name="482" href="#482">482</a>             <strong>throw</strong> <strong>new</strong> <a href="../../../../org/archive/crawler/admin/InvalidJobFileException.html">InvalidJobFileException</a>(<span class="string">"Problem reading from settings "</span> +
<a name="483" href="#483">483</a>                     <span class="string">"file ("</span> + tmp + <span class="string">") specified in job file '"</span> +
<a name="484" href="#484">484</a>                     jobFile.getAbsolutePath() + <span class="string">"'\n"</span> + e1.getMessage());
<a name="485" href="#485">485</a>         }
<a name="486" href="#486">486</a>         <em class="comment">// Statistics tracker.</em>
<a name="487" href="#487">487</a>         jobReader.readLine();
<a name="488" href="#488">488</a>         <em class="comment">// errorMessage</em>
<a name="489" href="#489">489</a>         <em class="comment">// TODO: Multilines</em>
<a name="490" href="#490">490</a>         tmp = jobReader.readLine();
<a name="491" href="#491">491</a>         errorMessage = <span class="string">""</span>;
<a name="492" href="#492">492</a>         <strong>while</strong>(tmp!=<strong>null</strong>){
<a name="493" href="#493">493</a>             errorMessage+=tmp+'\n';
<a name="494" href="#494">494</a>             tmp = jobReader.readLine();
<a name="495" href="#495">495</a>         }
<a name="496" href="#496">496</a>         <strong>if</strong>(errorMessage.length()==0){
<a name="497" href="#497">497</a>             <em class="comment">// Empty error message should be null</em>
<a name="498" href="#498">498</a>             errorMessage = <strong>null</strong>;
<a name="499" href="#499">499</a>         }
<a name="500" href="#500">500</a>         <em class="comment">// TODO: Load stattrack if needed.</em>
<a name="501" href="#501">501</a> 
<a name="502" href="#502">502</a>         <em class="comment">// TODO: This should be inside a finally block.</em>
<a name="503" href="#503">503</a>         jobReader.close();
<a name="504" href="#504">504</a>     }
<a name="505" href="#505">505</a> 
<a name="506" href="#506">506</a>     <em>/**<em>*</em></em>
<a name="507" href="#507">507</a> <em>     * Cause the job to be written to persistent storage.</em>
<a name="508" href="#508">508</a> <em>     * This will also save the statistics tracker if it is not null and the</em>
<a name="509" href="#509">509</a> <em>     * job status is finished (regardless of how it's finished)</em>
<a name="510" href="#510">510</a> <em>     */</em>
<a name="511" href="#511">511</a>     <strong>private</strong> <strong>void</strong> writeJobFile() {
<a name="512" href="#512">512</a>         <strong>if</strong> (isProfile) {
<a name="513" href="#513">513</a>             <strong>return</strong>;
<a name="514" href="#514">514</a>         }
<a name="515" href="#515">515</a>         
<a name="516" href="#516">516</a>         <strong>final</strong> String jobDirAbsolute = jobDir.getAbsolutePath();
<a name="517" href="#517">517</a>         <strong>if</strong> (!jobDir.exists() || !jobDir.canWrite()) {
<a name="518" href="#518">518</a>             logger.warning(<span class="string">"Can't update status on "</span> +
<a name="519" href="#519">519</a>                 jobDirAbsolute + <span class="string">" because file does not"</span> +
<a name="520" href="#520">520</a>                 <span class="string">" exist (or is unwriteable)"</span>);
<a name="521" href="#521">521</a>             <strong>return</strong>;
<a name="522" href="#522">522</a>         }
<a name="523" href="#523">523</a>         File f = <strong>new</strong> File(jobDirAbsolute, <span class="string">"state.job"</span>);
<a name="524" href="#524">524</a> 
<a name="525" href="#525">525</a>         String settingsFile = getSettingsDirectory();
<a name="526" href="#526">526</a>         <em class="comment">// Make settingsFile's path relative if order.xml is somewhere in the</em>
<a name="527" href="#527">527</a>         <em class="comment">// job's directory tree</em>
<a name="528" href="#528">528</a>         <strong>if</strong>(settingsFile.startsWith(jobDirAbsolute.concat(File.separator))) {
<a name="529" href="#529">529</a>             settingsFile = settingsFile.substring(jobDirAbsolute.length()+1);
<a name="530" href="#530">530</a>         }
<a name="531" href="#531">531</a>         <strong>try</strong> {
<a name="532" href="#532">532</a>             FileWriter jobWriter = <strong>new</strong> FileWriter(f, false);
<a name="533" href="#533">533</a>             <strong>try</strong> {
<a name="534" href="#534">534</a>                 jobWriter.write(UID + <span class="string">"\n"</span>);
<a name="535" href="#535">535</a>                 jobWriter.write(name + <span class="string">"\n"</span>);