scriptaction.html

框架结构,适用一些初学者使用． 请先压缩再使用

<a name="338" href="#338">338</a>                 } <strong>finally</strong> {
<a name="339" href="#339">339</a>                     <strong>if</strong> (reader != <strong>null</strong>) {
<a name="340" href="#340">340</a>                         <strong>try</strong> {
<a name="341" href="#341">341</a>                             reader.close();
<a name="342" href="#342">342</a>                         } <strong>catch</strong> (IOException ex) {
<a name="343" href="#343">343</a>                             LOG.debug(ex, ex);
<a name="344" href="#344">344</a>                         }
<a name="345" href="#345">345</a>                     }
<a name="346" href="#346">346</a>                 }
<a name="347" href="#347">347</a>             }
<a name="348" href="#348">348</a>         }
<a name="349" href="#349">349</a> 
<a name="350" href="#350">350</a>         <strong>return</strong> script;
<a name="351" href="#351">351</a>     }
<a name="352" href="#352">352</a> 
<a name="353" href="#353">353</a> 
<a name="354" href="#354">354</a>     <em>/**<em>*</em></em>
<a name="355" href="#355">355</a> <em>     *  Loads and initializes the filters.</em>
<a name="356" href="#356">356</a> <em>     *</em>
<a name="357" href="#357">357</a> <em>     *@param  props  The properties defining the filters</em>
<a name="358" href="#358">358</a> <em>     *@return        An array of the loaded filters</em>
<a name="359" href="#359">359</a> <em>     */</em>
<a name="360" href="#360">360</a>     <strong>protected</strong> <strong>static</strong> <a href="../../../../org/apache/struts/scripting/BSFManagerFilter.html">BSFManagerFilter</a>[] loadFilters(Properties props) {
<a name="361" href="#361">361</a>         ArrayList list = <strong>new</strong> ArrayList();
<a name="362" href="#362">362</a>         <strong>for</strong> (Enumeration e = props.propertyNames(); e.hasMoreElements();) {
<a name="363" href="#363">363</a>             String prop = (String) e.nextElement();
<a name="364" href="#364">364</a>             <strong>if</strong> (prop.startsWith(FILTERS_BASE) &amp;&amp; prop.endsWith(<span class="string">"class"</span>)) {
<a name="365" href="#365">365</a>                 String type = prop.substring(FILTERS_BASE.length(),
<a name="366" href="#366">366</a>                         prop.indexOf(<span class="string">"."</span>, FILTERS_BASE.length()));
<a name="367" href="#367">367</a>                 String claz = props.getProperty(prop);
<a name="368" href="#368">368</a>                 <strong>try</strong> {
<a name="369" href="#369">369</a>                     Class cls = Class.forName(claz);
<a name="370" href="#370">370</a>                     <a href="../../../../org/apache/struts/scripting/BSFManagerFilter.html">BSFManagerFilter</a> f = (BSFManagerFilter) cls.newInstance();
<a name="371" href="#371">371</a>                     f.init(type, props);
<a name="372" href="#372">372</a>                     list.add(f);
<a name="373" href="#373">373</a>                     <strong>if</strong> (LOG.isInfoEnabled()) {
<a name="374" href="#374">374</a>                         LOG.info(<span class="string">"Loaded "</span> + type + <span class="string">" filter: "</span> + claz);
<a name="375" href="#375">375</a>                     }
<a name="376" href="#376">376</a>                 } <strong>catch</strong> (Exception ex) {
<a name="377" href="#377">377</a>                     LOG.error(<span class="string">"Unable to load "</span> + type + <span class="string">" filter: "</span> + claz);
<a name="378" href="#378">378</a>                 }
<a name="379" href="#379">379</a>             }
<a name="380" href="#380">380</a>         }
<a name="381" href="#381">381</a>         <a href="../../../../org/apache/struts/scripting/BSFManagerFilter.html">BSFManagerFilter</a>[] filters = <strong>new</strong> <a href="../../../../org/apache/struts/scripting/BSFManagerFilter.html">BSFManagerFilter</a>[list.size()];
<a name="382" href="#382">382</a>         filters = (BSFManagerFilter[]) list.toArray(filters);
<a name="383" href="#383">383</a>         <strong>return</strong> filters;
<a name="384" href="#384">384</a>     }
<a name="385" href="#385">385</a> 
<a name="386" href="#386">386</a> 
<a name="387" href="#387">387</a>     <em>/**<em>*</em></em>
<a name="388" href="#388">388</a> <em>     *  Splits a line with the given delimiter.</em>
<a name="389" href="#389">389</a> <em>     *</em>
<a name="390" href="#390">390</a> <em>     *@param  line       The line to split</em>
<a name="391" href="#391">391</a> <em>     *@param  delimiter  The string to split with</em>
<a name="392" href="#392">392</a> <em>     *@return            An array of substrings</em>
<a name="393" href="#393">393</a> <em>     */</em>
<a name="394" href="#394">394</a>     <strong>protected</strong> <strong>static</strong> String[] split(String line, String delimiter) {
<a name="395" href="#395">395</a>         <strong>if</strong> (line == <strong>null</strong> || <span class="string">""</span>.equals(line)) {
<a name="396" href="#396">396</a>             <strong>return</strong> <strong>new</strong> String[]{};
<a name="397" href="#397">397</a>         }
<a name="398" href="#398">398</a> 
<a name="399" href="#399">399</a>         List lst = <strong>new</strong> ArrayList();
<a name="400" href="#400">400</a>         <strong>for</strong> (Enumeration e = <strong>new</strong> StringTokenizer(line, delimiter);
<a name="401" href="#401">401</a>             e.hasMoreElements();) {
<a name="402" href="#402">402</a>             lst.add(e.nextElement());
<a name="403" href="#403">403</a>         }
<a name="404" href="#404">404</a>         String[] ret = <strong>new</strong> String[lst.size()];
<a name="405" href="#405">405</a>         <strong>return</strong> (String[]) lst.toArray(ret);
<a name="406" href="#406">406</a>     }
<a name="407" href="#407">407</a> 
<a name="408" href="#408">408</a> 
<a name="409" href="#409">409</a>     <em class="comment">// These methods seem necessary as some scripting engines are not able to</em>
<a name="410" href="#410">410</a>     <em class="comment">// access Action's protected methods.  Ugly? yes... any suggestions?</em>
<a name="411" href="#411">411</a> 
<a name="412" href="#412">412</a>     <em>/**<em>*</em></em>
<a name="413" href="#413">413</a> <em>     *  Saves a token.</em>
<a name="414" href="#414">414</a> <em>     *</em>
<a name="415" href="#415">415</a> <em>     *@param  req  The request object</em>
<a name="416" href="#416">416</a> <em>     */</em>
<a name="417" href="#417">417</a>     <strong>public</strong> <strong>void</strong> saveToken(HttpServletRequest req) {
<a name="418" href="#418">418</a>         <strong>super</strong>.saveToken(req);
<a name="419" href="#419">419</a>     }
<a name="420" href="#420">420</a> 
<a name="421" href="#421">421</a> 
<a name="422" href="#422">422</a>     <em>/**<em>*</em></em>
<a name="423" href="#423">423</a> <em>     *  Checks to see if the request is cancelled.</em>
<a name="424" href="#424">424</a> <em>     *</em>
<a name="425" href="#425">425</a> <em>     *@param  req  The request object</em>
<a name="426" href="#426">426</a> <em>     *@return      True if cancelled</em>
<a name="427" href="#427">427</a> <em>     */</em>
<a name="428" href="#428">428</a>     <strong>public</strong> <strong>boolean</strong> isCancelled(HttpServletRequest req) {
<a name="429" href="#429">429</a>         <strong>return</strong> <strong>super</strong>.isCancelled(req);
<a name="430" href="#430">430</a>     }
<a name="431" href="#431">431</a> 
<a name="432" href="#432">432</a> 
<a name="433" href="#433">433</a>     <em>/**<em>*</em></em>
<a name="434" href="#434">434</a> <em>     *  Checks to see if the token is valid.</em>
<a name="435" href="#435">435</a> <em>     *</em>
<a name="436" href="#436">436</a> <em>     *@param  req  The request object</em>
<a name="437" href="#437">437</a> <em>     *@return      True if valid</em>
<a name="438" href="#438">438</a> <em>     */</em>
<a name="439" href="#439">439</a>     <strong>public</strong> <strong>boolean</strong> isTokenValid(HttpServletRequest req) {
<a name="440" href="#440">440</a>         <strong>return</strong> <strong>super</strong>.isTokenValid(req);
<a name="441" href="#441">441</a>     }
<a name="442" href="#442">442</a> 
<a name="443" href="#443">443</a> 
<a name="444" href="#444">444</a>     <em>/**<em>*</em></em>
<a name="445" href="#445">445</a> <em>     *  Resets the token.</em>
<a name="446" href="#446">446</a> <em>     *</em>
<a name="447" href="#447">447</a> <em>     *@param  req  The request object</em>
<a name="448" href="#448">448</a> <em>     */</em>
<a name="449" href="#449">449</a>     <strong>public</strong> <strong>void</strong> resetToken(HttpServletRequest req) {
<a name="450" href="#450">450</a>         <strong>super</strong>.resetToken(req);
<a name="451" href="#451">451</a>     }
<a name="452" href="#452">452</a> 
<a name="453" href="#453">453</a> 
<a name="454" href="#454">454</a>     <em>/**<em>*</em></em>
<a name="455" href="#455">455</a> <em>     *  Gets the locale.</em>
<a name="456" href="#456">456</a> <em>     *</em>
<a name="457" href="#457">457</a> <em>     *@param  req  The request object</em>
<a name="458" href="#458">458</a> <em>     *@return      The locale value</em>
<a name="459" href="#459">459</a> <em>     */</em>
<a name="460" href="#460">460</a>     <strong>public</strong> Locale getLocale(HttpServletRequest req) {
<a name="461" href="#461">461</a>         <strong>return</strong> <strong>super</strong>.getLocale(req);
<a name="462" href="#462">462</a>     }
<a name="463" href="#463">463</a> 
<a name="464" href="#464">464</a> 
<a name="465" href="#465">465</a>     <em>/**<em>*</em></em>
<a name="466" href="#466">466</a> <em>     *  Saves the messages to the request.</em>
<a name="467" href="#467">467</a> <em>     *</em>
<a name="468" href="#468">468</a> <em>     *@param  req  The request object</em>
<a name="469" href="#469">469</a> <em>     *@param  mes  The action messages</em>
<a name="470" href="#470">470</a> <em>     */</em>
<a name="471" href="#471">471</a>     <strong>public</strong> <strong>void</strong> saveMessages(HttpServletRequest req, ActionMessages mes) {
<a name="472" href="#472">472</a>         <strong>super</strong>.saveMessages(req, mes);
<a name="473" href="#473">473</a>     }
<a name="474" href="#474">474</a> 
<a name="475" href="#475">475</a> 
<a name="476" href="#476">476</a>     <em>/**<em>*</em></em>
<a name="477" href="#477">477</a> <em>     *  Saves the errors to the request.</em>
<a name="478" href="#478">478</a> <em>     *</em>
<a name="479" href="#479">479</a> <em>     *@param  req    The request object</em>
<a name="480" href="#480">480</a> <em>     *@param  errs   The action errors</em>
<a name="481" href="#481">481</a> <em>     *@deprecated    Use saveErrors(HttpServletRequest, ActionMessages) instead.</em>
<a name="482" href="#482">482</a> <em>     *      This will be removed after Struts 1.2.</em>
<a name="483" href="#483">483</a> <em>     */</em>
<a name="484" href="#484">484</a>     <strong>public</strong> <strong>void</strong> saveErrors(HttpServletRequest req, ActionErrors errs) {
<a name="485" href="#485">485</a>         <strong>super</strong>.saveErrors(req, errs);
<a name="486" href="#486">486</a>     }
<a name="487" href="#487">487</a> 
<a name="488" href="#488">488</a> 
<a name="489" href="#489">489</a>     <em>/**<em>*  Represents a saved script. */</em></em>
<a name="490" href="#490">490</a>     <strong>class</strong> Script {
<a name="491" href="#491">491</a> 
<a name="492" href="#492">492</a>         <em>/**<em>*  The script file. */</em></em>
<a name="493" href="#493">493</a>         <strong>public</strong> File file;
<a name="494" href="#494">494</a> 
<a name="495" href="#495">495</a>         <em>/**<em>*  The language the script is in. */</em></em>
<a name="496" href="#496">496</a>         <strong>public</strong> String lang = <strong>null</strong>;
<a name="497" href="#497">497</a> 
<a name="498" href="#498">498</a>         <em>/**<em>*  The time when the script was last used. */</em></em>
<a name="499" href="#499">499</a>         <strong>public</strong> <strong>long</strong> timeLastLoaded = 0;
<a name="500" href="#500">500</a> 
<a name="501" href="#501">501</a>         <em>/**<em>*  The contents of the script file. */</em></em>
<a name="502" href="#502">502</a>         <strong>public</strong> String string = <strong>null</strong>;
<a name="503" href="#503">503</a>     }
<a name="504" href="#504">504</a> }
<a name="505" href="#505">505</a> 
</pre>
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