过滤特殊字符代码,CSharp代码库,德仔网

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【CSharp】过滤特殊字符
作者: / 发布于2011/1/14/ 348
<div><span style="color: #008000">//</span><span style="color: #008000">过滤特殊字符</span><span style="color: #008000">
</span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> String encoding(String src){
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (src</span><span style="color: #000000">==</span><span style="color: #0000ff">null</span><span style="color: #000000">)
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #000000">""</span><span style="color: #000000">;
 StringBuilder result</span><span style="color: #000000">=</span><span style="color: #0000ff">new</span><span style="color: #000000"> StringBuilder();
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (src</span><span style="color: #000000">!=</span><span style="color: #0000ff">null</span><span style="color: #000000">){
 src</span><span style="color: #000000">=</span><span style="color: #000000">src.trim();
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (</span><span style="color: #0000ff">int</span><span style="color: #000000"> pos</span><span style="color: #000000">=</span><span style="color: #000000">0</span><span style="color: #000000">;pos</span><span style="color: #000000"><</span><span style="color: #000000">src.length();pos</span><span style="color: #000000">++</span><span style="color: #000000">){
 </span><span style="color: #0000ff">switch</span><span style="color: #000000">(src.charAt(pos)){
</span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\"</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&quot;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000"><</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&lt;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">></span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&gt;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">\'</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&apos;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">&</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&amp;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">%</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&pc;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">_</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&ul;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">#</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&shap;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">case</span><span style="color: #000000"> </span><span style="color: #000000">'</span><span style="color: #000000">?</span><span style="color: #000000">'</span><span style="color: #000000">:result.append(</span><span style="color: #000000">"</span><span style="color: #000000">&ques;</span><span style="color: #000000">"</span><span style="color: #000000">);</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 </span><span style="color: #0000ff">default</span><span style="color: #000000">:result.append(src.charAt(pos));</span><span style="color: #0000ff">break</span><span style="color: #000000">;
 }
 }
 }
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> result.toString();
 }
</span></div>
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