iobuffertest.html

MINA+API 关于MINA的API

<a name="321" href="#321">321</a> 
<a name="322" href="#322">322</a>         <strong class="jxr_keyword">try</strong> {
<a name="323" href="#323">323</a>             buffer.getString(Charset.forName(<span class="jxr_string">"ASCII"</span>).newDecoder());
<a name="324" href="#324">324</a>             Assert.fail();
<a name="325" href="#325">325</a>         } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a name="326" href="#326">326</a>             Assert.assertEquals(oldLimit, buffer.limit());
<a name="327" href="#327">327</a>             Assert.assertEquals(oldPos, buffer.position());
<a name="328" href="#328">328</a>         }
<a name="329" href="#329">329</a>     }
<a name="330" href="#330">330</a> 
<a name="331" href="#331">331</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testPutString() <strong class="jxr_keyword">throws</strong> Exception {
<a name="332" href="#332">332</a>         CharsetEncoder encoder;
<a name="333" href="#333">333</a>         IoBuffer buf = IoBuffer.allocate(16);
<a name="334" href="#334">334</a>         encoder = Charset.forName(<span class="jxr_string">"ISO-8859-1"</span>).newEncoder();
<a name="335" href="#335">335</a> 
<a name="336" href="#336">336</a>         buf.putString(<span class="jxr_string">"ABC"</span>, encoder);
<a name="337" href="#337">337</a>         Assert.assertEquals(3, buf.position());
<a name="338" href="#338">338</a>         buf.clear();
<a name="339" href="#339">339</a>         Assert.assertEquals('A', buf.get(0));
<a name="340" href="#340">340</a>         Assert.assertEquals('B', buf.get(1));
<a name="341" href="#341">341</a>         Assert.assertEquals('C', buf.get(2));
<a name="342" href="#342">342</a> 
<a name="343" href="#343">343</a>         buf.putString(<span class="jxr_string">"D"</span>, 5, encoder);
<a name="344" href="#344">344</a>         Assert.assertEquals(5, buf.position());
<a name="345" href="#345">345</a>         buf.clear();
<a name="346" href="#346">346</a>         Assert.assertEquals('D', buf.get(0));
<a name="347" href="#347">347</a>         Assert.assertEquals(0, buf.get(1));
<a name="348" href="#348">348</a> 
<a name="349" href="#349">349</a>         buf.putString(<span class="jxr_string">"EFG"</span>, 2, encoder);
<a name="350" href="#350">350</a>         Assert.assertEquals(2, buf.position());
<a name="351" href="#351">351</a>         buf.clear();
<a name="352" href="#352">352</a>         Assert.assertEquals('E', buf.get(0));
<a name="353" href="#353">353</a>         Assert.assertEquals('F', buf.get(1));
<a name="354" href="#354">354</a>         Assert.assertEquals('C', buf.get(2)); <em class="jxr_comment">// C may not be overwritten</em>
<a name="355" href="#355">355</a> 
<a name="356" href="#356">356</a>         <em class="jxr_comment">// UTF-16: We specify byte order to omit BOM.</em>
<a name="357" href="#357">357</a>         encoder = Charset.forName(<span class="jxr_string">"UTF-16BE"</span>).newEncoder();
<a name="358" href="#358">358</a>         buf.clear();
<a name="359" href="#359">359</a> 
<a name="360" href="#360">360</a>         buf.putString(<span class="jxr_string">"ABC"</span>, encoder);
<a name="361" href="#361">361</a>         Assert.assertEquals(6, buf.position());
<a name="362" href="#362">362</a>         buf.clear();
<a name="363" href="#363">363</a> 
<a name="364" href="#364">364</a>         Assert.assertEquals(0, buf.get(0));
<a name="365" href="#365">365</a>         Assert.assertEquals('A', buf.get(1));
<a name="366" href="#366">366</a>         Assert.assertEquals(0, buf.get(2));
<a name="367" href="#367">367</a>         Assert.assertEquals('B', buf.get(3));
<a name="368" href="#368">368</a>         Assert.assertEquals(0, buf.get(4));
<a name="369" href="#369">369</a>         Assert.assertEquals('C', buf.get(5));
<a name="370" href="#370">370</a> 
<a name="371" href="#371">371</a>         buf.putString(<span class="jxr_string">"D"</span>, 10, encoder);
<a name="372" href="#372">372</a>         Assert.assertEquals(10, buf.position());
<a name="373" href="#373">373</a>         buf.clear();
<a name="374" href="#374">374</a>         Assert.assertEquals(0, buf.get(0));
<a name="375" href="#375">375</a>         Assert.assertEquals('D', buf.get(1));
<a name="376" href="#376">376</a>         Assert.assertEquals(0, buf.get(2));
<a name="377" href="#377">377</a>         Assert.assertEquals(0, buf.get(3));
<a name="378" href="#378">378</a> 
<a name="379" href="#379">379</a>         buf.putString(<span class="jxr_string">"EFG"</span>, 4, encoder);
<a name="380" href="#380">380</a>         Assert.assertEquals(4, buf.position());
<a name="381" href="#381">381</a>         buf.clear();
<a name="382" href="#382">382</a>         Assert.assertEquals(0, buf.get(0));
<a name="383" href="#383">383</a>         Assert.assertEquals('E', buf.get(1));
<a name="384" href="#384">384</a>         Assert.assertEquals(0, buf.get(2));
<a name="385" href="#385">385</a>         Assert.assertEquals('F', buf.get(3));
<a name="386" href="#386">386</a>         Assert.assertEquals(0, buf.get(4)); <em class="jxr_comment">// C may not be overwritten</em>
<a name="387" href="#387">387</a>         Assert.assertEquals('C', buf.get(5)); <em class="jxr_comment">// C may not be overwritten</em>
<a name="388" href="#388">388</a> 
<a name="389" href="#389">389</a>         <em class="jxr_comment">// Test putting an emptry string</em>
<a name="390" href="#390">390</a>         buf.putString(<span class="jxr_string">""</span>, encoder);
<a name="391" href="#391">391</a>         Assert.assertEquals(0, buf.position());
<a name="392" href="#392">392</a>         buf.putString(<span class="jxr_string">""</span>, 4, encoder);
<a name="393" href="#393">393</a>         Assert.assertEquals(4, buf.position());
<a name="394" href="#394">394</a>         Assert.assertEquals(0, buf.get(0));
<a name="395" href="#395">395</a>         Assert.assertEquals(0, buf.get(1));
<a name="396" href="#396">396</a>     }
<a name="397" href="#397">397</a> 
<a name="398" href="#398">398</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testGetPrefixedString() <strong class="jxr_keyword">throws</strong> Exception {
<a name="399" href="#399">399</a>         IoBuffer buf = IoBuffer.allocate(16);
<a name="400" href="#400">400</a>         CharsetEncoder encoder;
<a name="401" href="#401">401</a>         CharsetDecoder decoder;
<a name="402" href="#402">402</a>         encoder = Charset.forName(<span class="jxr_string">"ISO-8859-1"</span>).newEncoder();
<a name="403" href="#403">403</a>         decoder = Charset.forName(<span class="jxr_string">"ISO-8859-1"</span>).newDecoder();
<a name="404" href="#404">404</a> 
<a name="405" href="#405">405</a>         buf.putShort((<strong class="jxr_keyword">short</strong>) 3);
<a name="406" href="#406">406</a>         buf.putString(<span class="jxr_string">"ABCD"</span>, encoder);
<a name="407" href="#407">407</a>         buf.clear();
<a name="408" href="#408">408</a>         Assert.assertEquals(<span class="jxr_string">"ABC"</span>, buf.getPrefixedString(decoder));
<a name="409" href="#409">409</a>     }
<a name="410" href="#410">410</a> 
<a name="411" href="#411">411</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testPutPrefixedString() <strong class="jxr_keyword">throws</strong> Exception {
<a name="412" href="#412">412</a>         CharsetEncoder encoder;
<a name="413" href="#413">413</a>         IoBuffer buf = IoBuffer.allocate(16);
<a name="414" href="#414">414</a>         buf.fillAndReset(buf.remaining());
<a name="415" href="#415">415</a>         encoder = Charset.forName(<span class="jxr_string">"ISO-8859-1"</span>).newEncoder();
<a name="416" href="#416">416</a> 
<a name="417" href="#417">417</a>         <em class="jxr_comment">// Without autoExpand</em>
<a name="418" href="#418">418</a>         buf.putPrefixedString(<span class="jxr_string">"ABC"</span>, encoder);
<a name="419" href="#419">419</a>         Assert.assertEquals(5, buf.position());
<a name="420" href="#420">420</a>         Assert.assertEquals(0, buf.get(0));
<a name="421" href="#421">421</a>         Assert.assertEquals(3, buf.get(1));
<a name="422" href="#422">422</a>         Assert.assertEquals('A', buf.get(2));
<a name="423" href="#423">423</a>         Assert.assertEquals('B', buf.get(3));
<a name="424" href="#424">424</a>         Assert.assertEquals('C', buf.get(4));
<a name="425" href="#425">425</a> 
<a name="426" href="#426">426</a>         buf.clear();
<a name="427" href="#427">427</a>         <strong class="jxr_keyword">try</strong> {
<a name="428" href="#428">428</a>             buf.putPrefixedString(<span class="jxr_string">"123456789012345"</span>, encoder);
<a name="429" href="#429">429</a>             Assert.fail();
<a name="430" href="#430">430</a>         } <strong class="jxr_keyword">catch</strong> (BufferOverflowException e) {
<a name="431" href="#431">431</a>             <em class="jxr_comment">// OK</em>
<a name="432" href="#432">432</a>         }
<a name="433" href="#433">433</a> 
<a name="434" href="#434">434</a>         <em class="jxr_comment">// With autoExpand</em>
<a name="435" href="#435">435</a>         buf.clear();
<a name="436" href="#436">436</a>         buf.setAutoExpand(<strong class="jxr_keyword">true</strong>);
<a name="437" href="#437">437</a>         buf.putPrefixedString(<span class="jxr_string">"123456789012345"</span>, encoder);
<a name="438" href="#438">438</a>         Assert.assertEquals(17, buf.position());
<a name="439" href="#439">439</a>         Assert.assertEquals(0, buf.get(0));
<a name="440" href="#440">440</a>         Assert.assertEquals(15, buf.get(1));
<a name="441" href="#441">441</a>         Assert.assertEquals('1', buf.get(2));
<a name="442" href="#442">442</a>         Assert.assertEquals('2', buf.get(3));
<a name="443" href="#443">443</a>         Assert.assertEquals('3', buf.get(4));
<a name="444" href="#444">444</a>         Assert.assertEquals('4', buf.get(5));
<a name="445" href="#445">445</a>         Assert.assertEquals('5', buf.get(6));
<a name="446" href="#446">446</a>         Assert.assertEquals('6', buf.get(7));
<a name="447" href="#447">447</a>         Assert.assertEquals('7', buf.get(8));
<a name="448" href="#448">448</a>         Assert.assertEquals('8', buf.get(9));
<a name="449" href="#449">449</a>         Assert.assertEquals('9', buf.get(10));
<a name="450" href="#450">450</a>         Assert.assertEquals('0', buf.get(11));
<a name="451" href="#451">451</a>         Assert.assertEquals('1', buf.get(12));
<a name="452" href="#452">452</a>         Assert.assertEquals('2', buf.get(13));
<a name="453" href="#453">453</a>         Assert.assertEquals('3', buf.get(14));
<a name="454" href="#454">454</a>         Assert.assertEquals('4', buf.get(15));
<a name="455" href="#455">455</a>         Assert.assertEquals('5', buf.get(16));
<a name="456" href="#456">456</a>     }
<a name="457" href="#457">457</a> 
<a name="458" href="#458">458</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testPutPrefixedStringWithPrefixLength() <strong class="jxr_keyword">throws</strong> Exception {
<a name="459" href="#459">459</a>         CharsetEncoder encoder = Charset.forName(<span class="jxr_string">"ISO-8859-1"</span>).newEncoder();
<a name="460" href="#460">460</a>         IoBuffer buf = IoBuffer.allocate(16).sweep().setAutoExpand(<strong class="jxr_keyword">true</strong>);
<a name="461" href="#461">461</a> 
<a name="462" href="#462">462</a>         buf.putPrefixedString(<span class="jxr_string">"A"</span>, 1, encoder);
<a name="463" href="#463">463</a>         Assert.assertEquals(2, buf.position());
<a name="464" href="#464">464</a>         Assert.assertEquals(1, buf.get(0));
<a name="465" href="#465">465</a>         Assert.assertEquals('A', buf.get(1));
<a name="466" href="#466">466</a> 
<a name="467" href="#467">467</a>         buf.sweep();
<a name="468" href="#468">468</a>         buf.putPrefixedString(<span class="jxr_string">"A"</span>, 2, encoder);
<a name="469" href="#469">469</a>         Assert.assertEquals(3, buf.position());
<a name="470" href="#470">470</a>         Assert.assertEquals(0, buf.get(0));
<a name="471" href="#471">471</a>         Assert.assertEquals(1, buf.get(1));
<a name="472" href="#472">472</a>         Assert.assertEquals('A', buf.get(2));
<a name="473" href="#473">473</a> 
<a name="474" href="#474">474</a>         buf.sweep();
<a name="475" href="#475">475</a>         buf.putPrefixedString(<span class="jxr_string">"A"</span>, 4, encoder);
<a name="476" href="#476">476</a>         Assert.assertEquals(5, buf.position());
<a name="477" href="#477">477</a>         Assert.assertEquals(0, buf.get(0));
<a name="478" href="#478">478</a>         Assert.assertEquals(0, buf.get(1));
<a name="479" href="#479">479</a>         Assert.assertEquals(0, buf.get(2));
<a name="480" href="#480">480</a>         Assert.assertEquals(1, buf.get(3));
<a name="481" href="#481">481</a>         Assert.assertEquals('A', buf.get(4));
<a name="482" href="#482">482</a>     }
<a name="483" href="#483">483</a> 
<a name="484" href="#484">484</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testPutPrefixedStringWithPadding() <strong class="jxr_keyword">throws</strong> Exception {
<a name="485" href="#485">485</a>         CharsetEncoder encoder = Charset.forName(<span class="jxr_string">"ISO-8859-1"</span>).newEncoder();