tostringbean.html

解析RSS工具源码

<a name="119" href="#119">119</a>     <em>/**<em>*</em></em>
<a name="120" href="#120">120</a> <em>     * Returns the String representation of the bean given in the constructor.</em>
<a name="121" href="#121">121</a> <em>     * &lt;p></em>
<a name="122" href="#122">122</a> <em>     * @param prefix to use for bean properties.</em>
<a name="123" href="#123">123</a> <em>     * @return bean object String representation.</em>
<a name="124" href="#124">124</a> <em>     *</em>
<a name="125" href="#125">125</a> <em>     */</em>
<a name="126" href="#126">126</a>     <strong>private</strong> String toString(String prefix) {
<a name="127" href="#127">127</a>         StringBuffer sb = <strong>new</strong> StringBuffer(128);
<a name="128" href="#128">128</a>         <strong>try</strong> {
<a name="129" href="#129">129</a>             PropertyDescriptor[] pds = BeanIntrospector.getPropertyDescriptors(_beanClass);
<a name="130" href="#130">130</a>             <strong>if</strong> (pds!=<strong>null</strong>) {
<a name="131" href="#131">131</a>                 <strong>for</strong> (<strong>int</strong> i=0;i&lt;pds.length;i++) {
<a name="132" href="#132">132</a>                     String pName = pds[i].getName();
<a name="133" href="#133">133</a>                     Method pReadMethod = pds[i].getReadMethod();
<a name="134" href="#134">134</a>                     <strong>if</strong> (pReadMethod!=<strong>null</strong> &amp;&amp;                             <em class="comment">// ensure it has a getter method</em>
<a name="135" href="#135">135</a>                         pReadMethod.getDeclaringClass()!=Object.<strong>class</strong> &amp;&amp; <em class="comment">// filter Object.class getter methods</em>
<a name="136" href="#136">136</a>                         pReadMethod.getParameterTypes().length==0) {     <em class="comment">// filter getter methods that take parameters</em>
<a name="137" href="#137">137</a>                         Object value = pReadMethod.invoke(_obj,NO_PARAMS);
<a name="138" href="#138">138</a>                         printProperty(sb,prefix+<span class="string">"."</span>+pName,value);
<a name="139" href="#139">139</a>                     }
<a name="140" href="#140">140</a>                 }
<a name="141" href="#141">141</a>             }
<a name="142" href="#142">142</a>         }
<a name="143" href="#143">143</a>         <strong>catch</strong> (Exception ex) {
<a name="144" href="#144">144</a>             sb.append(<span class="string">"\n\nEXCEPTION: Could not complete "</span>+_obj.getClass()+<span class="string">".toString(): "</span>+ex.getMessage()+<span class="string">"\n"</span>);
<a name="145" href="#145">145</a>         }
<a name="146" href="#146">146</a>         <strong>return</strong> sb.toString();
<a name="147" href="#147">147</a>     }
<a name="148" href="#148">148</a> 
<a name="149" href="#149">149</a>     <strong>private</strong> <strong>void</strong> printProperty(StringBuffer sb,String prefix,Object value) {
<a name="150" href="#150">150</a>         <strong>if</strong> (value==<strong>null</strong>) {
<a name="151" href="#151">151</a>             sb.append(prefix).append(<span class="string">"=null\n"</span>);
<a name="152" href="#152">152</a>         }
<a name="153" href="#153">153</a>         <strong>else</strong>
<a name="154" href="#154">154</a>         <strong>if</strong> (value.getClass().isArray()) {
<a name="155" href="#155">155</a>             printArrayProperty(sb,prefix,value);
<a name="156" href="#156">156</a>         }
<a name="157" href="#157">157</a>         <strong>else</strong>
<a name="158" href="#158">158</a>         <strong>if</strong> (value instanceof Map) {
<a name="159" href="#159">159</a>             Map map = (Map) value;
<a name="160" href="#160">160</a>             Iterator i = map.entrySet().iterator();
<a name="161" href="#161">161</a>             <strong>if</strong> (i.hasNext()) {
<a name="162" href="#162">162</a>                 <strong>while</strong> (i.hasNext()) {
<a name="163" href="#163">163</a>                     Map.Entry me = (Map.Entry) i.next();
<a name="164" href="#164">164</a>                     String ePrefix = prefix+<span class="string">"["</span>+me.getKey()+<span class="string">"]"</span>;
<a name="165" href="#165">165</a>                     Object eValue = me.getValue();
<a name="166" href="#166">166</a> 
<a name="167" href="#167">167</a>                     <em class="comment">//NEW</em>
<a name="168" href="#168">168</a>                     String[] tsInfo = <strong>new</strong> String[2];
<a name="169" href="#169">169</a>                     tsInfo[0] = ePrefix;
<a name="170" href="#170">170</a>                     Stack stack = (Stack) PREFIX_TL.get();
<a name="171" href="#171">171</a>                     stack.push(tsInfo);
<a name="172" href="#172">172</a>                     String s = (eValue!=<strong>null</strong>) ? eValue.toString() : <span class="string">"null"</span>;
<a name="173" href="#173">173</a>                     stack.pop();
<a name="174" href="#174">174</a>                     <strong>if</strong> (tsInfo[1]==<strong>null</strong>) {
<a name="175" href="#175">175</a>                         sb.append(ePrefix).append(<span class="string">"="</span>).append(s).append(<span class="string">"\n"</span>);
<a name="176" href="#176">176</a>                     }
<a name="177" href="#177">177</a>                     <strong>else</strong> {
<a name="178" href="#178">178</a>                         sb.append(s);
<a name="179" href="#179">179</a>                     }
<a name="180" href="#180">180</a>                 }
<a name="181" href="#181">181</a>             }
<a name="182" href="#182">182</a>             <strong>else</strong> {
<a name="183" href="#183">183</a>                 sb.append(prefix).append(<span class="string">"=[]\n"</span>);
<a name="184" href="#184">184</a>             }
<a name="185" href="#185">185</a>         }
<a name="186" href="#186">186</a>         <strong>else</strong>
<a name="187" href="#187">187</a>         <strong>if</strong> (value instanceof Collection) {
<a name="188" href="#188">188</a>             Collection collection = (Collection) value;
<a name="189" href="#189">189</a>             Iterator i = collection.iterator();
<a name="190" href="#190">190</a>             <strong>if</strong> (i.hasNext()) {
<a name="191" href="#191">191</a>                 <strong>int</strong> c = 0;
<a name="192" href="#192">192</a>                 <strong>while</strong> (i.hasNext()) {
<a name="193" href="#193">193</a>                     String cPrefix = prefix+<span class="string">"["</span>+(c++)+<span class="string">"]"</span>;
<a name="194" href="#194">194</a>                     Object cValue = i.next();
<a name="195" href="#195">195</a> 
<a name="196" href="#196">196</a>                     <em class="comment">//NEW</em>
<a name="197" href="#197">197</a>                     String[] tsInfo = <strong>new</strong> String[2];
<a name="198" href="#198">198</a>                     tsInfo[0] = cPrefix;
<a name="199" href="#199">199</a>                     Stack stack = (Stack) PREFIX_TL.get();
<a name="200" href="#200">200</a>                     stack.push(tsInfo);
<a name="201" href="#201">201</a>                     String s = (cValue!=<strong>null</strong>) ? cValue.toString() : <span class="string">"null"</span>;
<a name="202" href="#202">202</a>                     stack.pop();
<a name="203" href="#203">203</a>                     <strong>if</strong> (tsInfo[1]==<strong>null</strong>) {
<a name="204" href="#204">204</a>                         sb.append(cPrefix).append(<span class="string">"="</span>).append(s).append(<span class="string">"\n"</span>);
<a name="205" href="#205">205</a>                     }
<a name="206" href="#206">206</a>                     <strong>else</strong> {
<a name="207" href="#207">207</a>                         sb.append(s);
<a name="208" href="#208">208</a>                     }
<a name="209" href="#209">209</a>                 }
<a name="210" href="#210">210</a>             }
<a name="211" href="#211">211</a>             <strong>else</strong> {
<a name="212" href="#212">212</a>                 sb.append(prefix).append(<span class="string">"=[]\n"</span>);
<a name="213" href="#213">213</a>             }
<a name="214" href="#214">214</a>         }
<a name="215" href="#215">215</a>         <strong>else</strong> {
<a name="216" href="#216">216</a>             String[] tsInfo = <strong>new</strong> String[2];
<a name="217" href="#217">217</a>             tsInfo[0] = prefix;
<a name="218" href="#218">218</a>             Stack stack = (Stack) PREFIX_TL.get();
<a name="219" href="#219">219</a>             stack.push(tsInfo);
<a name="220" href="#220">220</a>             String s = value.toString();
<a name="221" href="#221">221</a>             stack.pop();
<a name="222" href="#222">222</a>             <strong>if</strong> (tsInfo[1]==<strong>null</strong>) {
<a name="223" href="#223">223</a>                 sb.append(prefix).append(<span class="string">"="</span>).append(s).append(<span class="string">"\n"</span>);
<a name="224" href="#224">224</a>             }
<a name="225" href="#225">225</a>             <strong>else</strong> {
<a name="226" href="#226">226</a>                 sb.append(s);
<a name="227" href="#227">227</a>             }
<a name="228" href="#228">228</a>         }
<a name="229" href="#229">229</a>     }
<a name="230" href="#230">230</a> 
<a name="231" href="#231">231</a>     <strong>private</strong> <strong>void</strong> printArrayProperty(StringBuffer sb, String prefix,Object array) {
<a name="232" href="#232">232</a>         <strong>int</strong> length = Array.getLength(array);
<a name="233" href="#233">233</a>         <strong>for</strong> (<strong>int</strong> i=0;i&lt;length;i++) {
<a name="234" href="#234">234</a>             Object obj = Array.get(array,i);
<a name="235" href="#235">235</a>             printProperty(sb,prefix+<span class="string">"["</span>+i+<span class="string">"]"</span>,obj);
<a name="236" href="#236">236</a>         }
<a name="237" href="#237">237</a>     }
<a name="238" href="#238">238</a> 
<a name="239" href="#239">239</a> }
<a name="240" href="#240">240</a> 
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