threadlocalhttpconnectionmanager.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="143" href="#143">143</a>         <strong>final</strong> HostConfiguration hostConfiguration, <strong>final</strong> <strong>long</strong> timeout) {
<a name="144" href="#144">144</a> 
<a name="145" href="#145">145</a>         <strong>final</strong> ConnectionInfo ci = getConnectionInfo();
<a name="146" href="#146">146</a>         <a href="../../../org/apache/commons/httpclient/HttpConnection.html">HttpConnection</a> httpConnection = ci.conn;
<a name="147" href="#147">147</a> 
<a name="148" href="#148">148</a>         <em class="comment">// make sure the host and proxy are correct for this connection</em>
<a name="149" href="#149">149</a>         <em class="comment">// close it and set the values if they are not</em>
<a name="150" href="#150">150</a>         <strong>if</strong>(httpConnection == <strong>null</strong> || !finishLastResponse(httpConnection)
<a name="151" href="#151">151</a>             || !hostConfiguration.hostEquals(httpConnection)
<a name="152" href="#152">152</a>             || !hostConfiguration.proxyEquals(httpConnection)) {
<a name="153" href="#153">153</a> 
<a name="154" href="#154">154</a>             <strong>if</strong>(httpConnection != <strong>null</strong> &amp;&amp; httpConnection.isOpen()) {
<a name="155" href="#155">155</a>                 closer.closeConnection(httpConnection);
<a name="156" href="#156">156</a>             }
<a name="157" href="#157">157</a> 
<a name="158" href="#158">158</a>             httpConnection = <strong>new</strong> <a href="../../../org/apache/commons/httpclient/HttpConnection.html">HttpConnection</a>(hostConfiguration);
<a name="159" href="#159">159</a>             httpConnection.setHttpConnectionManager(<strong>this</strong>);
<a name="160" href="#160">160</a>             httpConnection.getParams().setDefaults(<strong>this</strong>.params);
<a name="161" href="#161">161</a>             ci.conn = httpConnection;
<a name="162" href="#162">162</a> 
<a name="163" href="#163">163</a>             httpConnection.setHost(hostConfiguration.getHost());
<a name="164" href="#164">164</a>             httpConnection.setPort(hostConfiguration.getPort());
<a name="165" href="#165">165</a>             httpConnection.setProtocol(hostConfiguration.getProtocol());
<a name="166" href="#166">166</a>             httpConnection.setLocalAddress(hostConfiguration.getLocalAddress());
<a name="167" href="#167">167</a> 
<a name="168" href="#168">168</a>             httpConnection.setProxyHost(hostConfiguration.getProxyHost());
<a name="169" href="#169">169</a>             httpConnection.setProxyPort(hostConfiguration.getProxyPort());
<a name="170" href="#170">170</a>         }
<a name="171" href="#171">171</a> 
<a name="172" href="#172">172</a>         <em class="comment">// remove the connection from the timeout handler</em>
<a name="173" href="#173">173</a>         ci.idleStartTime = Long.MAX_VALUE;
<a name="174" href="#174">174</a> 
<a name="175" href="#175">175</a>         <strong>return</strong> httpConnection;
<a name="176" href="#176">176</a>     }
<a name="177" href="#177">177</a> 
<a name="178" href="#178">178</a>     <em>/**<em>*</em></em>
<a name="179" href="#179">179</a> <em>     * @see HttpConnectionManager#getConnection(HostConfiguration, long)</em>
<a name="180" href="#180">180</a> <em>     * </em>
<a name="181" href="#181">181</a> <em>     * @deprecated Use #getConnectionWithTimeout(HostConfiguration, long)</em>
<a name="182" href="#182">182</a> <em>     */</em>
<a name="183" href="#183">183</a>     <strong>public</strong> <a href="../../../org/apache/commons/httpclient/HttpConnection.html">HttpConnection</a> getConnection(
<a name="184" href="#184">184</a>         <strong>final</strong> HostConfiguration hostConfiguration, <strong>final</strong> <strong>long</strong> timeout) {
<a name="185" href="#185">185</a>         <strong>return</strong> getConnectionWithTimeout(hostConfiguration, timeout);
<a name="186" href="#186">186</a>     }
<a name="187" href="#187">187</a> 
<a name="188" href="#188">188</a>     <em>/**<em>*</em></em>
<a name="189" href="#189">189</a> <em>     * @see HttpConnectionManager#releaseConnection(org.apache.commons.httpclient.HttpConnection)</em>
<a name="190" href="#190">190</a> <em>     */</em>
<a name="191" href="#191">191</a>     <strong>public</strong> <strong>void</strong> releaseConnection(<strong>final</strong> <a href="../../../org/apache/commons/httpclient/HttpConnection.html">HttpConnection</a> conn) {
<a name="192" href="#192">192</a>         <strong>final</strong> ConnectionInfo ci = getConnectionInfo();
<a name="193" href="#193">193</a>         <a href="../../../org/apache/commons/httpclient/HttpConnection.html">HttpConnection</a> httpConnection = ci.conn;
<a name="194" href="#194">194</a> 
<a name="195" href="#195">195</a>         <strong>if</strong>(conn != httpConnection) {
<a name="196" href="#196">196</a>             <strong>throw</strong> <strong>new</strong> IllegalStateException(
<a name="197" href="#197">197</a>                 <span class="string">"Unexpected release of an unknown connection."</span>);
<a name="198" href="#198">198</a>         }
<a name="199" href="#199">199</a> 
<a name="200" href="#200">200</a>         finishLastResponse(httpConnection);
<a name="201" href="#201">201</a> 
<a name="202" href="#202">202</a>         <em class="comment">// track the time the connection was made idle</em>
<a name="203" href="#203">203</a>         ci.idleStartTime = System.currentTimeMillis();
<a name="204" href="#204">204</a>     }
<a name="205" href="#205">205</a> 
<a name="206" href="#206">206</a>     <em>/**<em>*</em></em>
<a name="207" href="#207">207</a> <em>     * Returns {@link HttpConnectionManagerParams parameters} associated </em>
<a name="208" href="#208">208</a> <em>     * with this connection manager.</em>
<a name="209" href="#209">209</a> <em>     * </em>
<a name="210" href="#210">210</a> <em>     * @since 2.1</em>
<a name="211" href="#211">211</a> <em>     * </em>
<a name="212" href="#212">212</a> <em>     * @see HttpConnectionManagerParams</em>
<a name="213" href="#213">213</a> <em>     */</em>
<a name="214" href="#214">214</a>     <strong>public</strong> HttpConnectionManagerParams getParams() {
<a name="215" href="#215">215</a>         <strong>return</strong> <strong>this</strong>.params;
<a name="216" href="#216">216</a>     }
<a name="217" href="#217">217</a> 
<a name="218" href="#218">218</a>     <em>/**<em>*</em></em>
<a name="219" href="#219">219</a> <em>     * Assigns {@link HttpConnectionManagerParams parameters} for this </em>
<a name="220" href="#220">220</a> <em>     * connection manager.</em>
<a name="221" href="#221">221</a> <em>     * </em>
<a name="222" href="#222">222</a> <em>     * @since 2.1</em>
<a name="223" href="#223">223</a> <em>     * </em>
<a name="224" href="#224">224</a> <em>     * @see HttpConnectionManagerParams</em>
<a name="225" href="#225">225</a> <em>     */</em>
<a name="226" href="#226">226</a>     <strong>public</strong> <strong>void</strong> setParams(<strong>final</strong> HttpConnectionManagerParams p) {
<a name="227" href="#227">227</a>         <strong>if</strong>(p == <strong>null</strong>) {
<a name="228" href="#228">228</a>             <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"Parameters may not be null"</span>);
<a name="229" href="#229">229</a>         }
<a name="230" href="#230">230</a>         <strong>this</strong>.params = p;
<a name="231" href="#231">231</a>     }
<a name="232" href="#232">232</a> 
<a name="233" href="#233">233</a>     <em>/**<em>*</em></em>
<a name="234" href="#234">234</a> <em>     * @since 3.0</em>
<a name="235" href="#235">235</a> <em>     */</em>
<a name="236" href="#236">236</a>     <strong>public</strong> <strong>void</strong> closeIdleConnections(<strong>final</strong> <strong>long</strong> idleTimeout) {
<a name="237" href="#237">237</a>         <strong>long</strong> maxIdleTime = System.currentTimeMillis() - idleTimeout;
<a name="238" href="#238">238</a> 
<a name="239" href="#239">239</a>         <strong>final</strong> ConnectionInfo ci = getConnectionInfo();
<a name="240" href="#240">240</a> 
<a name="241" href="#241">241</a>         <strong>if</strong>(ci.idleStartTime &lt;= maxIdleTime) {
<a name="242" href="#242">242</a>             ci.conn.close();
<a name="243" href="#243">243</a>         }
<a name="244" href="#244">244</a>     }
<a name="245" href="#245">245</a> 
<a name="246" href="#246">246</a>     <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>class</strong> CloserThread <strong>extends</strong> Thread {
<a name="247" href="#247">247</a>         <strong>private</strong> List connections = <strong>new</strong> ArrayList();
<a name="248" href="#248">248</a>         <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>int</strong> SLEEP_INTERVAL = 5000;
<a name="249" href="#249">249</a> 
<a name="250" href="#250">250</a>         <strong>public</strong> CloserThread() {
<a name="251" href="#251">251</a>             <strong>super</strong>(<span class="string">"HttpConnection closer"</span>);
<a name="252" href="#252">252</a>             <em class="comment">// Make this a daemon thread so it can't be responsible for the JVM</em>
<a name="253" href="#253">253</a>             <em class="comment">// not shutting down.</em>
<a name="254" href="#254">254</a>             setDaemon(<strong>true</strong>);
<a name="255" href="#255">255</a>             start();
<a name="256" href="#256">256</a>         }
<a name="257" href="#257">257</a> 
<a name="258" href="#258">258</a>         <strong>public</strong> <strong>void</strong> closeConnection(<strong>final</strong> <a href="../../../org/apache/commons/httpclient/HttpConnection.html">HttpConnection</a> conn) {
<a name="259" href="#259">259</a>             <strong>synchronized</strong> (connections) {
<a name="260" href="#260">260</a>                 connections.add(conn);
<a name="261" href="#261">261</a>             }
<a name="262" href="#262">262</a>         }
<a name="263" href="#263">263</a> 
<a name="264" href="#264">264</a>         <strong>public</strong> <strong>void</strong> run() {
<a name="265" href="#265">265</a>             <strong>try</strong> {
<a name="266" href="#266">266</a>                 <strong>while</strong> (!Thread.interrupted()) {
<a name="267" href="#267">267</a>                     Thread.sleep(SLEEP_INTERVAL);
<a name="268" href="#268">268</a> 
<a name="269" href="#269">269</a>                     List s;
<a name="270" href="#270">270</a>                     <strong>synchronized</strong> (connections) {
<a name="271" href="#271">271</a>                         s = connections;
<a name="272" href="#272">272</a>                         connections = <strong>new</strong> ArrayList();
<a name="273" href="#273">273</a>                     }
<a name="274" href="#274">274</a>                     logger.log(Level.INFO, <span class="string">"Closing "</span> + s.size()
<a name="275" href="#275">275</a>                         + <span class="string">" HttpConnections"</span>);
<a name="276" href="#276">276</a>                     <strong>for</strong>(<strong>final</strong> Iterator it = s.iterator(); it.hasNext();) {
<a name="277" href="#277">277</a>                         <a href="../../../org/apache/commons/httpclient/HttpConnection.html">HttpConnection</a> conn = (HttpConnection) it.next();
<a name="278" href="#278">278</a>                         conn.close();
<a name="279" href="#279">279</a>                         conn.setHttpConnectionManager(<strong>null</strong>);
<a name="280" href="#280">280</a>                         it.remove();
<a name="281" href="#281">281</a>                     }
<a name="282" href="#282">282</a>                 }
<a name="283" href="#283">283</a>             } <strong>catch</strong> (InterruptedException e) {
<a name="284" href="#284">284</a>                 <strong>return</strong>;
<a name="285" href="#285">285</a>             }
<a name="286" href="#286">286</a>         }
<a name="287" href="#287">287</a>     }
<a name="288" href="#288">288</a> }
</pre>
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