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来自「网络爬虫开源代码」· HTML 代码 · 共 291 行 · 第 1/2 页

<a name="138" href="#138">138</a>             <strong>new</strong> FastBufferedOutputStream(<strong>new</strong> FileOutputStream(f))));
<a name="139" href="#139">139</a>     }
<a name="140" href="#140">140</a> 
<a name="141" href="#141">141</a>     <em>/**<em>*</em></em>
<a name="142" href="#142">142</a> <em>     * Write a line</em>
<a name="143" href="#143">143</a> <em>     * </em>
<a name="144" href="#144">144</a> <em>     * @param string String</em>
<a name="145" href="#145">145</a> <em>     */</em>
<a name="146" href="#146">146</a>     <strong>public</strong> <strong>synchronized</strong> <strong>void</strong> writeLine(String string) {
<a name="147" href="#147">147</a>         <strong>try</strong> {
<a name="148" href="#148">148</a>             <strong>this</strong>.out.write(<span class="string">"\n"</span>);
<a name="149" href="#149">149</a>             <strong>this</strong>.out.write(string);
<a name="150" href="#150">150</a>             noteLine();
<a name="151" href="#151">151</a>         } <strong>catch</strong> (IOException e) {
<a name="152" href="#152">152</a>             e.printStackTrace();
<a name="153" href="#153">153</a>         }
<a name="154" href="#154">154</a>     }
<a name="155" href="#155">155</a> 
<a name="156" href="#156">156</a>     <em>/**<em>*</em></em>
<a name="157" href="#157">157</a> <em>     * Write a line of two strings</em>
<a name="158" href="#158">158</a> <em>     * </em>
<a name="159" href="#159">159</a> <em>     * @param s1 String</em>
<a name="160" href="#160">160</a> <em>     * @param s2 String</em>
<a name="161" href="#161">161</a> <em>     */</em>
<a name="162" href="#162">162</a>     <strong>public</strong> <strong>synchronized</strong> <strong>void</strong> writeLine(String s1, String s2) {
<a name="163" href="#163">163</a>         <strong>try</strong> {
<a name="164" href="#164">164</a>             <strong>this</strong>.out.write(<span class="string">"\n"</span>);
<a name="165" href="#165">165</a>             <strong>this</strong>.out.write(s1);
<a name="166" href="#166">166</a>             <strong>this</strong>.out.write(s2);
<a name="167" href="#167">167</a>             noteLine();
<a name="168" href="#168">168</a>         } <strong>catch</strong> (IOException e) {
<a name="169" href="#169">169</a>             e.printStackTrace();
<a name="170" href="#170">170</a>         }
<a name="171" href="#171">171</a>     }
<a name="172" href="#172">172</a>     
<a name="173" href="#173">173</a>     <em>/**<em>*</em></em>
<a name="174" href="#174">174</a> <em>     * Write a line of three strings</em>
<a name="175" href="#175">175</a> <em>     * </em>
<a name="176" href="#176">176</a> <em>     * @param s1 String</em>
<a name="177" href="#177">177</a> <em>     * @param s2 String</em>
<a name="178" href="#178">178</a> <em>     * @param s3 String</em>
<a name="179" href="#179">179</a> <em>     */</em>
<a name="180" href="#180">180</a>     <strong>public</strong> <strong>synchronized</strong> <strong>void</strong> writeLine(String s1, String s2, String s3) {
<a name="181" href="#181">181</a>         <strong>try</strong> {
<a name="182" href="#182">182</a>             <strong>this</strong>.out.write(<span class="string">"\n"</span>);
<a name="183" href="#183">183</a>             <strong>this</strong>.out.write(s1);
<a name="184" href="#184">184</a>             <strong>this</strong>.out.write(s2);
<a name="185" href="#185">185</a>             <strong>this</strong>.out.write(s3);
<a name="186" href="#186">186</a>             noteLine();
<a name="187" href="#187">187</a>         } <strong>catch</strong> (IOException e) {
<a name="188" href="#188">188</a>             e.printStackTrace();
<a name="189" href="#189">189</a>         }
<a name="190" href="#190">190</a>     }
<a name="191" href="#191">191</a> 
<a name="192" href="#192">192</a>     <em>/**<em>*</em></em>
<a name="193" href="#193">193</a> <em>     * Write a line. </em>
<a name="194" href="#194">194</a> <em>     * </em>
<a name="195" href="#195">195</a> <em>     * @param mstring MutableString to write</em>
<a name="196" href="#196">196</a> <em>     */</em>
<a name="197" href="#197">197</a>     <strong>public</strong> <strong>synchronized</strong> <strong>void</strong> writeLine(MutableString mstring) {
<a name="198" href="#198">198</a>         <strong>if</strong> (<strong>this</strong>.out == <strong>null</strong>) {
<a name="199" href="#199">199</a>             <strong>return</strong>;
<a name="200" href="#200">200</a>         }
<a name="201" href="#201">201</a>         <strong>try</strong> {
<a name="202" href="#202">202</a>             <strong>this</strong>.out.write(<span class="string">"\n"</span>);
<a name="203" href="#203">203</a>             mstring.write(out);
<a name="204" href="#204">204</a>             noteLine();
<a name="205" href="#205">205</a>         } <strong>catch</strong> (IOException e) {
<a name="206" href="#206">206</a>             e.printStackTrace();
<a name="207" href="#207">207</a>         }
<a name="208" href="#208">208</a>     }
<a name="209" href="#209">209</a> 
<a name="210" href="#210">210</a>     <em>/**<em>*</em></em>
<a name="211" href="#211">211</a> <em>     * Count and note a line</em>
<a name="212" href="#212">212</a> <em>     * </em>
<a name="213" href="#213">213</a> <em>     * @throws IOException</em>
<a name="214" href="#214">214</a> <em>     */</em>
<a name="215" href="#215">215</a>     <strong>protected</strong> <strong>void</strong> noteLine() throws IOException {
<a name="216" href="#216">216</a>         lines++;
<a name="217" href="#217">217</a>         considerTimestamp();
<a name="218" href="#218">218</a>     }
<a name="219" href="#219">219</a> 
<a name="220" href="#220">220</a>     <em>/**<em>*</em></em>
<a name="221" href="#221">221</a> <em>     * Write a timestamp line if appropriate</em>
<a name="222" href="#222">222</a> <em>     * </em>
<a name="223" href="#223">223</a> <em>     * @throws IOException</em>
<a name="224" href="#224">224</a> <em>     */</em>
<a name="225" href="#225">225</a>     <strong>protected</strong> <strong>void</strong> considerTimestamp() throws IOException {
<a name="226" href="#226">226</a>         <strong>if</strong>(timestamp_interval > 0 &amp;&amp; lines % timestamp_interval == 0) {
<a name="227" href="#227">227</a>             out.write(<span class="string">"\n"</span>);
<a name="228" href="#228">228</a>             out.write(LOG_TIMESTAMP);
<a name="229" href="#229">229</a>             out.write(ArchiveUtils.getLog14Date());
<a name="230" href="#230">230</a>         }
<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>     * Flush and close the underlying IO objects.</em>
<a name="235" href="#235">235</a> <em>     */</em>
<a name="236" href="#236">236</a>     <strong>public</strong> <strong>void</strong> close() {
<a name="237" href="#237">237</a>         <strong>if</strong> (<strong>this</strong>.out == <strong>null</strong>) {
<a name="238" href="#238">238</a>             <strong>return</strong>;
<a name="239" href="#239">239</a>         }
<a name="240" href="#240">240</a>         <strong>try</strong> {
<a name="241" href="#241">241</a>             <strong>this</strong>.out.flush();
<a name="242" href="#242">242</a>             <strong>this</strong>.out.close();
<a name="243" href="#243">243</a>             <strong>this</strong>.out = <strong>null</strong>;
<a name="244" href="#244">244</a>         } <strong>catch</strong> (IOException e) {
<a name="245" href="#245">245</a>             e.printStackTrace();
<a name="246" href="#246">246</a>         }
<a name="247" href="#247">247</a>     }
<a name="248" href="#248">248</a> 
<a name="249" href="#249">249</a>     <em>/**<em>*</em></em>
<a name="250" href="#250">250</a> <em>     * Note a serious error vioa a special log line</em>
<a name="251" href="#251">251</a> <em>     * </em>
<a name="252" href="#252">252</a> <em>     * @param err</em>
<a name="253" href="#253">253</a> <em>     */</em>
<a name="254" href="#254">254</a>     <strong>public</strong> <strong>void</strong> seriousError(String err) {
<a name="255" href="#255">255</a>         writeLine(<span class="string">"\n"</span>+LOG_ERROR+ArchiveUtils.getLog14Date()+<span class="string">" "</span>+err);
<a name="256" href="#256">256</a>     }
<a name="257" href="#257">257</a> 
<a name="258" href="#258">258</a>     <em>/**<em>*</em></em>
<a name="259" href="#259">259</a> <em>     * Handle a checkpoint by rotating the current log to a checkpoint-named</em>
<a name="260" href="#260">260</a> <em>     * file and starting a new log. </em>
<a name="261" href="#261">261</a> <em>     * </em>
<a name="262" href="#262">262</a> <em>     * @param checkpointDir</em>
<a name="263" href="#263">263</a> <em>     * @throws IOException</em>
<a name="264" href="#264">264</a> <em>     */</em>
<a name="265" href="#265">265</a>     <strong>public</strong> <strong>synchronized</strong> <strong>void</strong> checkpoint(<strong>final</strong> File checkpointDir) throws IOException {
<a name="266" href="#266">266</a>         <strong>if</strong> (<strong>this</strong>.out == <strong>null</strong> || !<strong>this</strong>.gzipFile.exists()) {
<a name="267" href="#267">267</a>             <strong>return</strong>;
<a name="268" href="#268">268</a>         }
<a name="269" href="#269">269</a>         close();
<a name="270" href="#270">270</a>         <em class="comment">// Rename gzipFile with the checkpoint name as suffix.</em>
<a name="271" href="#271">271</a>         <strong>this</strong>.gzipFile.renameTo(<strong>new</strong> File(<strong>this</strong>.gzipFile.getParentFile(),
<a name="272" href="#272">272</a>                 <strong>this</strong>.gzipFile.getName() + <span class="string">"."</span> + checkpointDir.getName()));
<a name="273" href="#273">273</a>         <em class="comment">// Open new gzip file.</em>
<a name="274" href="#274">274</a>         <strong>this</strong>.out = initialize(<strong>this</strong>.gzipFile);
<a name="275" href="#275">275</a>     }
<a name="276" href="#276">276</a> 
<a name="277" href="#277">277</a> }
</pre>
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