相关flash中url字符的特殊处理，请看这里。

http://www.macromedia.com/cfusio ... dex.cfm?id=tn_14143

<table border="1" cellspacing="0">
          <tbody>
           <tr>
            <th>Character</th>
            <th>Code</th>
            <th>Character</th>
            <th>Code</th>
           </tr>
           <tr>
            <td>?</td>
            <td>%26%23169;</td>
            <td>t</td>
            <td>%74</td>
           </tr>
           <tr>
            <td>?</td>
            <td>%26%23174;</td>
            <td>u</td>
            <td>%75</td>
           </tr>
           <tr>
            <td>?</td>
            <td>%E2%84%A2</td>
            <td>v</td>
            <td>%76</td>
           </tr>
           <tr>
            <td>backspace</td>
            <td>%08</td>
            <td>w</td>
            <td>%77</td>
           </tr>
           <tr>
            <td>tab</td>
            <td>%09</td>
            <td>x</td>
            <td>%78</td>
           </tr>
           <tr>
            <td>linefeed</td>
            <td>%0A</td>
            <td>y</td>
            <td>%79</td>
           </tr>
           <tr>
            <td>creturn</td>
            <td>%0D</td>
            <td>z</td>
            <td>%7A</td>
           </tr>
           <tr>
            <td>space</td>
            <td>%20</td>
            <td>{</td>
            <td>%7B</td>
           </tr>
           <tr>
            <td>!</td>
            <td>%21</td>
            <td>|</td>
            <td>%7C</td>
           </tr>
           <tr>
            <td>"</td>
            <td>%22</td>
            <td>}</td>
            <td>%7D</td>
           </tr>
           <tr>
            <td>#</td>
            <td>%23</td>
            <td>~</td>
            <td>%7E</td>
           </tr>
           <tr>
            <td>$</td>
            <td>%24</td>
            <td>￠</td>
            <td>%A2</td>
           </tr>
           <tr>
            <td>%</td>
            <td>%25</td>
            <td>￡</td>
            <td>%A3</td>
           </tr>
           <tr>
            <td>&amp;</td>
            <td>%26</td>
            <td>￥</td>
            <td>%A5</td>
           </tr>
           <tr>
            <td>'</td>
            <td>%27</td>
            <td>|</td>
            <td>%A6</td>
           </tr>
           <tr>
            <td>(</td>
            <td>%28</td>
            <td>§</td>
            <td>%A7</td>
           </tr>
           <tr>
            <td>)</td>
            <td>%29</td>
            <td>?</td>
            <td>%AB</td>
           </tr>
           <tr>
            <td>*</td>
            <td>%2A</td>
            <td>?</td>
            <td>%AC</td>
           </tr>
           <tr>
            <td>+</td>
            <td>%2B</td>
            <td>ˉ</td>
            <td>%AD</td>
           </tr>
           <tr>
            <td>,</td>
            <td>%2C</td>
            <td>o</td>
            <td>%B0</td>
           </tr>
           <tr>
            <td>-</td>
            <td>%2D</td>
            <td>±</td>
            <td>%B1</td>
           </tr>
           <tr>
            <td>.</td>
            <td>%2E</td>
            <td>a</td>
            <td>%B2</td>
           </tr>
           <tr>
            <td>/</td>
            <td>%2F</td>
            <td>,</td>
            <td>%B4</td>
           </tr>
           <tr>
            <td>0</td>
            <td>%30</td>
            <td>μ</td>
            <td>%B5</td>
           </tr>
           <tr>
            <td>1</td>
            <td>%31</td>
            <td>?</td>
            <td>%BB</td>
           </tr>
           <tr>
            <td>2</td>
            <td>%32</td>
            <td>?</td>
            <td>%BC</td>
           </tr>
           <tr>
            <td>3</td>
            <td>%33</td>
            <td>?</td>
            <td>%BD</td>
           </tr>
           <tr>
            <td>4</td>
            <td>%34</td>
            <td>?</td>
            <td>%BF</td>
           </tr>
           <tr>
            <td>5</td>
            <td>%35</td>
            <td>A`</td>
            <td>%C0</td>
           </tr>
           <tr>
            <td>6</td>
            <td>%36</td>
            <td>A′</td>
            <td>%C1</td>
           </tr>
           <tr>
            <td>7</td>
            <td>%37</td>
            <td>A^</td>
            <td>%C2</td>
           </tr>
           <tr>
            <td>8</td>
            <td>%38</td>
            <td>A~</td>
            <td>%C3</td>
           </tr>
           <tr>
            <td>9</td>
            <td>%39</td>
            <td>A¨</td>
            <td>%C4</td>
           </tr>
           <tr>
            <td>:</td>
            <td>%3A</td>
            <td>A°</td>
            <td>%C5</td>
           </tr>
           <tr>
            <td>;</td>
            <td>%3B</td>
            <td>?</td>
            <td>%C6</td>
           </tr>
           <tr>
            <td>&lt;</td>
            <td>%3C</td>
            <td>C?</td>
            <td>%C7</td>
           </tr>
           <tr>
            <td>=</td>
            <td>%3D</td>
            <td>E`</td>
            <td>%C8</td>
           </tr>
           <tr>
            <td>&gt;</td>
            <td>%3E</td>
            <td>E′</td>
            <td>%C9</td>
           </tr>
           <tr>
            <td>?</td>
            <td>%3F</td>
            <td>E^</td>
            <td>%CA</td>
           </tr>
           <tr>
            <td>@</td>
            <td>%40</td>
            <td>E¨</td>
            <td>%CB</td>
           </tr>
           <tr>
            <td>A</td>
            <td>%41</td>
            <td>I`</td>
            <td>%CC</td>
           </tr>
           <tr>
            <td>B</td>
            <td>%42</td>
            <td>I′</td>
            <td>%CD</td>
           </tr>
           <tr>
            <td>C</td>
            <td>%43</td>
            <td>I^</td>
            <td>%CE</td>
           </tr>
           <tr>
            <td>D</td>
            <td>%44</td>
            <td>I¨</td>
            <td>%CF</td>
           </tr>
           <tr>
            <td>E</td>
            <td>%45</td>
            <td>D</td>
            <td>%D0</td>
           </tr>
           <tr>
            <td>F</td>
            <td>%46</td>
            <td>N~</td>
            <td>%D1</td>
           </tr>
           <tr>
            <td>G</td>
            <td>%47</td>
            <td>O`</td>
            <td>%D2</td>
           </tr>
           <tr>
            <td>H</td>
            <td>%48</td>
            <td>O′</td>
            <td>%D3</td>
           </tr>
           <tr>
            <td>I</td>
            <td>%49</td>
            <td>O^</td>
            <td>%D4</td>
           </tr>
           <tr>
            <td>J</td>
            <td>%4A</td>
            <td>O~</td>
            <td>%D5</td>
           </tr>
           <tr>
            <td>K</td>
            <td>%4B</td>
            <td>O¨</td>
            <td>%D6</td>
           </tr>
           <tr>
            <td>L</td>
            <td>%4C</td>
            <td>?</td>
            <td>%D8</td>
           </tr>
           <tr>
            <td>M</td>
            <td>%4D</td>
            <td>U`</td>
            <td>%D9</td>
           </tr>
           <tr>
            <td>N</td>
            <td>%4E</td>
            <td>U′</td>
            <td>%DA</td>
           </tr>
           <tr>
            <td>O</td>
            <td>%4F</td>
            <td>U^</td>
            <td>%DB</td>
           </tr>
           <tr>
            <td>P</td>
            <td>%50</td>
            <td>U¨</td>
            <td>%DC</td>
           </tr>
           <tr>
            <td>Q</td>
            <td>%51</td>
            <td>Y′</td>
            <td>%DD</td>
           </tr>
           <tr>
            <td>R</td>
            <td>%52</td>
            <td>T</td>
            <td>%DE</td>
           </tr>
           <tr>
            <td>S</td>
            <td>%53</td>
            <td>?</td>
            <td>%DF</td>
           </tr>
           <tr>
            <td>T</td>
            <td>%54</td>
            <td>a`</td>
            <td>%E0</td>
           </tr>
           <tr>
            <td>U</td>
            <td>%55</td>
            <td>a′</td>
            <td>%E1</td>
           </tr>
           <tr>
            <td>V</td>
            <td>%56</td>
            <td>a^</td>
            <td>%E2</td>
           </tr>
           <tr>
            <td>W</td>
            <td>%57</td>
            <td>a~</td>
            <td>%E3</td>
           </tr>
           <tr>
            <td>X</td>
            <td>%58</td>
            <td>a¨</td>
            <td>%E4</td>
           </tr>
           <tr>
            <td>Y</td>
            <td>%59</td>
            <td>a°</td>
            <td>%E5</td>
           </tr>
           <tr>
            <td>Z</td>
            <td>%5A</td>
            <td>?</td>
            <td>%E6</td>
           </tr>
           <tr>
            <td>[</td>
            <td>%5B</td>
            <td>c?</td>
            <td>%E7</td>
           </tr>
           <tr>
            <td>\</td>
            <td>%5C</td>
            <td>e`</td>
            <td>%E8</td>
           </tr>
           <tr>
            <td>]</td>
            <td>%5D</td>
            <td>e′</td>
            <td>%E9</td>
           </tr>
           <tr>
            <td>^</td>
            <td>%5E</td>
            <td>e^</td>
            <td>%EA</td>
           </tr>
           <tr>
            <td>_</td>
            <td>%5F</td>
            <td>e¨</td>
            <td>%EB</td>
           </tr>
           <tr>
            <td>`</td>
            <td>%60</td>
            <td>i`</td>
            <td>%EC</td>
           </tr>
           <tr>
            <td>a</td>
            <td>%61</td>
            <td>i′</td>
            <td>%ED</td>
           </tr>
           <tr>
            <td>b</td>
            <td>%62</td>
            <td>i^</td>
            <td>%EE</td>
           </tr>
           <tr>
            <td>c</td>
            <td>%63</td>
            <td>i¨</td>
            <td>%EF</td>
           </tr>
           <tr>
            <td>d</td>
            <td>%64</td>
            <td>e</td>
            <td>%F0</td>
           </tr>
           <tr>
            <td>e</td>
            <td>%65</td>
            <td>n~</td>
            <td>%F1</td>
           </tr>
           <tr>
            <td>f</td>
            <td>%66</td>
            <td>o`</td>
            <td>%F2</td>
           </tr>
           <tr>
            <td>g</td>
            <td>%67</td>
            <td>o′</td>
            <td>%F3</td>
           </tr>
           <tr>
            <td>h</td>
            <td>%68</td>
            <td>o^</td>
            <td>%F4</td>
           </tr>
           <tr>
            <td>i</td>
            <td>%69</td>
            <td>o~</td>
            <td>%F5</td>
           </tr>
           <tr>
            <td>j</td>
            <td>%6A</td>
            <td>o¨</td>
            <td>%F6</td>
           </tr>
           <tr>
            <td>k</td>
            <td>%6B</td>
            <td>÷</td>
            <td>%F7</td>
           </tr>
           <tr>
            <td>l</td>
            <td>%6C</td>
            <td>?</td>
            <td>%F8</td>
           </tr>
           <tr>
            <td>m</td>
            <td>%6D</td>
            <td>u`</td>
            <td>%F9</td>
           </tr>
           <tr>
            <td>n</td>
            <td>%6E</td>
            <td>u′</td>
            <td>%FA</td>
           </tr>
           <tr>
            <td>o</td>
            <td>%6F</td>
            <td>u^</td>
            <td>%FB</td>
           </tr>
           <tr>
            <td>p</td>
            <td>%70</td>
            <td>u¨</td>
            <td>%FC</td>
           </tr>
           <tr>
            <td>q</td>
            <td>%71</td>
            <td>y′</td>
            <td>%FD</td>
           </tr>
           <tr>
            <td>r</td>
            <td>%72</td>
            <td>t</td>
            <td>%FE</td>
           </tr>
           <tr>
            <td>s</td>
            <td>%73</td>
            <td>y¨</td>
            <td>%FF</td>
           </tr>
          </tbody>
         </table>