diskfileitemfactory.html

java 的上传功能很强大的实施上述事实上说是

<a name="112" href="#112">112</a> <em class="jxr_javadoccomment">     * @param repository    The data repository, which is the directory in</em>
<a name="113" href="#113">113</a> <em class="jxr_javadoccomment">     *                      which files will be created, should the item size</em>
<a name="114" href="#114">114</a> <em class="jxr_javadoccomment">     *                      exceed the threshold.</em>
<a name="115" href="#115">115</a> <em class="jxr_javadoccomment">     */</em>
<a name="116" href="#116">116</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html">DiskFileItemFactory</a>(<strong class="jxr_keyword">int</strong> sizeThreshold, File repository) {
<a name="117" href="#117">117</a>         <strong class="jxr_keyword">this</strong>.sizeThreshold = sizeThreshold;
<a name="118" href="#118">118</a>         <strong class="jxr_keyword">this</strong>.repository = repository;
<a name="119" href="#119">119</a>     }
<a name="120" href="#120">120</a> 
<a name="121" href="#121">121</a>     <em class="jxr_comment">// ------------------------------------------------------------- Properties</em>
<a name="122" href="#122">122</a> 
<a name="123" href="#123">123</a> 
<a name="124" href="#124">124</a>     <em class="jxr_javadoccomment">/**</em>
<a name="125" href="#125">125</a> <em class="jxr_javadoccomment">     * Returns the directory used to temporarily store files that are larger</em>
<a name="126" href="#126">126</a> <em class="jxr_javadoccomment">     * than the configured size threshold.</em>
<a name="127" href="#127">127</a> <em class="jxr_javadoccomment">     *</em>
<a name="128" href="#128">128</a> <em class="jxr_javadoccomment">     * @return The directory in which temporary files will be located.</em>
<a name="129" href="#129">129</a> <em class="jxr_javadoccomment">     *</em>
<a name="130" href="#130">130</a> <em class="jxr_javadoccomment">     * @see #setRepository(java.io.File)</em>
<a name="131" href="#131">131</a> <em class="jxr_javadoccomment">     *</em>
<a name="132" href="#132">132</a> <em class="jxr_javadoccomment">     */</em>
<a name="133" href="#133">133</a>     <strong class="jxr_keyword">public</strong> File getRepository() {
<a name="134" href="#134">134</a>         <strong class="jxr_keyword">return</strong> repository;
<a name="135" href="#135">135</a>     }
<a name="136" href="#136">136</a> 
<a name="137" href="#137">137</a> 
<a name="138" href="#138">138</a>     <em class="jxr_javadoccomment">/**</em>
<a name="139" href="#139">139</a> <em class="jxr_javadoccomment">     * Sets the directory used to temporarily store files that are larger</em>
<a name="140" href="#140">140</a> <em class="jxr_javadoccomment">     * than the configured size threshold.</em>
<a name="141" href="#141">141</a> <em class="jxr_javadoccomment">     *</em>
<a name="142" href="#142">142</a> <em class="jxr_javadoccomment">     * @param repository The directory in which temporary files will be located.</em>
<a name="143" href="#143">143</a> <em class="jxr_javadoccomment">     *</em>
<a name="144" href="#144">144</a> <em class="jxr_javadoccomment">     * @see #getRepository()</em>
<a name="145" href="#145">145</a> <em class="jxr_javadoccomment">     *</em>
<a name="146" href="#146">146</a> <em class="jxr_javadoccomment">     */</em>
<a name="147" href="#147">147</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setRepository(File repository) {
<a name="148" href="#148">148</a>         <strong class="jxr_keyword">this</strong>.repository = repository;
<a name="149" href="#149">149</a>     }
<a name="150" href="#150">150</a> 
<a name="151" href="#151">151</a> 
<a name="152" href="#152">152</a>     <em class="jxr_javadoccomment">/**</em>
<a name="153" href="#153">153</a> <em class="jxr_javadoccomment">     * Returns the size threshold beyond which files are written directly to</em>
<a name="154" href="#154">154</a> <em class="jxr_javadoccomment">     * disk. The default value is 10240 bytes.</em>
<a name="155" href="#155">155</a> <em class="jxr_javadoccomment">     *</em>
<a name="156" href="#156">156</a> <em class="jxr_javadoccomment">     * @return The size threshold, in bytes.</em>
<a name="157" href="#157">157</a> <em class="jxr_javadoccomment">     *</em>
<a name="158" href="#158">158</a> <em class="jxr_javadoccomment">     * @see #setSizeThreshold(int)</em>
<a name="159" href="#159">159</a> <em class="jxr_javadoccomment">     */</em>
<a name="160" href="#160">160</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getSizeThreshold() {
<a name="161" href="#161">161</a>         <strong class="jxr_keyword">return</strong> sizeThreshold;
<a name="162" href="#162">162</a>     }
<a name="163" href="#163">163</a> 
<a name="164" href="#164">164</a> 
<a name="165" href="#165">165</a>     <em class="jxr_javadoccomment">/**</em>
<a name="166" href="#166">166</a> <em class="jxr_javadoccomment">     * Sets the size threshold beyond which files are written directly to disk.</em>
<a name="167" href="#167">167</a> <em class="jxr_javadoccomment">     *</em>
<a name="168" href="#168">168</a> <em class="jxr_javadoccomment">     * @param sizeThreshold The size threshold, in bytes.</em>
<a name="169" href="#169">169</a> <em class="jxr_javadoccomment">     *</em>
<a name="170" href="#170">170</a> <em class="jxr_javadoccomment">     * @see #getSizeThreshold()</em>
<a name="171" href="#171">171</a> <em class="jxr_javadoccomment">     *</em>
<a name="172" href="#172">172</a> <em class="jxr_javadoccomment">     */</em>
<a name="173" href="#173">173</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setSizeThreshold(<strong class="jxr_keyword">int</strong> sizeThreshold) {
<a name="174" href="#174">174</a>         <strong class="jxr_keyword">this</strong>.sizeThreshold = sizeThreshold;
<a name="175" href="#175">175</a>     }
<a name="176" href="#176">176</a> 
<a name="177" href="#177">177</a> 
<a name="178" href="#178">178</a>     <em class="jxr_comment">// --------------------------------------------------------- Public Methods</em>
<a name="179" href="#179">179</a> 
<a name="180" href="#180">180</a>     <em class="jxr_javadoccomment">/**</em>
<a name="181" href="#181">181</a> <em class="jxr_javadoccomment">     * Create a new {@link org.apache.commons.fileupload.disk.DiskFileItem}</em>
<a name="182" href="#182">182</a> <em class="jxr_javadoccomment">     * instance from the supplied parameters and the local factory</em>
<a name="183" href="#183">183</a> <em class="jxr_javadoccomment">     * configuration.</em>
<a name="184" href="#184">184</a> <em class="jxr_javadoccomment">     *</em>
<a name="185" href="#185">185</a> <em class="jxr_javadoccomment">     * @param fieldName   The name of the form field.</em>
<a name="186" href="#186">186</a> <em class="jxr_javadoccomment">     * @param contentType The content type of the form field.</em>
<a name="187" href="#187">187</a> <em class="jxr_javadoccomment">     * @param isFormField &lt;code&gt;true&lt;/code&gt; if this is a plain form field;</em>
<a name="188" href="#188">188</a> <em class="jxr_javadoccomment">     *                    &lt;code&gt;false&lt;/code&gt; otherwise.</em>
<a name="189" href="#189">189</a> <em class="jxr_javadoccomment">     * @param fileName    The name of the uploaded file, if any, as supplied</em>
<a name="190" href="#190">190</a> <em class="jxr_javadoccomment">     *                    by the browser or other client.</em>
<a name="191" href="#191">191</a> <em class="jxr_javadoccomment">     *</em>
<a name="192" href="#192">192</a> <em class="jxr_javadoccomment">     * @return The newly created file item.</em>
<a name="193" href="#193">193</a> <em class="jxr_javadoccomment">     */</em>
<a name="194" href="#194">194</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/commons/fileupload/FileItem.html">FileItem</a> createItem(String fieldName, String contentType,
<a name="195" href="#195">195</a>             <strong class="jxr_keyword">boolean</strong> isFormField, String fileName) {
<a name="196" href="#196">196</a>         <a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItem.html">DiskFileItem</a> result = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItem.html">DiskFileItem</a>(fieldName, contentType,
<a name="197" href="#197">197</a>                 isFormField, fileName, sizeThreshold, repository);
<a name="198" href="#198">198</a>         FileCleaningTracker tracker = getFileCleaningTracker();
<a name="199" href="#199">199</a>         <strong class="jxr_keyword">if</strong> (tracker != <strong class="jxr_keyword">null</strong>) {
<a name="200" href="#200">200</a>             tracker.track(result.getTempFile(), <strong class="jxr_keyword">this</strong>);
<a name="201" href="#201">201</a>         }
<a name="202" href="#202">202</a>         <strong class="jxr_keyword">return</strong> result;
<a name="203" href="#203">203</a>     }
<a name="204" href="#204">204</a> 
<a name="205" href="#205">205</a> 
<a name="206" href="#206">206</a>     <em class="jxr_javadoccomment">/**</em>
<a name="207" href="#207">207</a> <em class="jxr_javadoccomment">     * Returns the tracker, which is responsible for deleting temporary</em>
<a name="208" href="#208">208</a> <em class="jxr_javadoccomment">     * files.</em>
<a name="209" href="#209">209</a> <em class="jxr_javadoccomment">     * @return An instance of {@link FileCleaningTracker}, defaults to</em>
<a name="210" href="#210">210</a> <em class="jxr_javadoccomment">     *   {@link org.apache.commons.io.FileCleaner#getInstance()}. Null,</em>
<a name="211" href="#211">211</a> <em class="jxr_javadoccomment">     *   if temporary files aren't tracked.</em>
<a name="212" href="#212">212</a> <em class="jxr_javadoccomment">     */</em>
<a name="213" href="#213">213</a>     <strong class="jxr_keyword">public</strong> FileCleaningTracker getFileCleaningTracker() {
<a name="214" href="#214">214</a>         <strong class="jxr_keyword">return</strong> fileCleaningTracker;
<a name="215" href="#215">215</a>     }
<a name="216" href="#216">216</a> 
<a name="217" href="#217">217</a>     <em class="jxr_javadoccomment">/**</em>
<a name="218" href="#218">218</a> <em class="jxr_javadoccomment">     * Returns the tracker, which is responsible for deleting temporary</em>
<a name="219" href="#219">219</a> <em class="jxr_javadoccomment">     * files.</em>
<a name="220" href="#220">220</a> <em class="jxr_javadoccomment">     * @param pTracker An instance of {@link FileCleaningTracker},</em>
<a name="221" href="#221">221</a> <em class="jxr_javadoccomment">     *   which will from now on track the created files. May be null</em>
<a name="222" href="#222">222</a> <em class="jxr_javadoccomment">     *   to disable tracking.</em>
<a name="223" href="#223">223</a> <em class="jxr_javadoccomment">     */</em>
<a name="224" href="#224">224</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setFileCleaningTracker(FileCleaningTracker pTracker) {
<a name="225" href="#225">225</a>         fileCleaningTracker = pTracker;
<a name="226" href="#226">226</a>     }
<a name="227" href="#227">227</a> }
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