httpmethodbase.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="472" href="#472">472</a> <em>     * @param header the header</em>
<a name="473" href="#473">473</a> <em>     */</em>
<a name="474" href="#474">474</a>     <strong>public</strong> <strong>void</strong> setRequestHeader(Header header) {
<a name="475" href="#475">475</a>         
<a name="476" href="#476">476</a>         Header[] headers = getRequestHeaderGroup().getHeaders(header.getName());
<a name="477" href="#477">477</a>         
<a name="478" href="#478">478</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; headers.length; i++) {
<a name="479" href="#479">479</a>             getRequestHeaderGroup().removeHeader(headers[i]);
<a name="480" href="#480">480</a>         }
<a name="481" href="#481">481</a>         
<a name="482" href="#482">482</a>         getRequestHeaderGroup().addHeader(header);
<a name="483" href="#483">483</a>         
<a name="484" href="#484">484</a>     }
<a name="485" href="#485">485</a> 
<a name="486" href="#486">486</a>     <em>/**<em>*</em></em>
<a name="487" href="#487">487</a> <em>     * Returns the specified request header. Note that header-name matching is</em>
<a name="488" href="#488">488</a> <em>     * case insensitive. &lt;tt>null&lt;/tt> will be returned if either</em>
<a name="489" href="#489">489</a> <em>     * &lt;i>headerName&lt;/i> is &lt;tt>null&lt;/tt> or there is no matching header for</em>
<a name="490" href="#490">490</a> <em>     * &lt;i>headerName&lt;/i>.</em>
<a name="491" href="#491">491</a> <em>     * </em>
<a name="492" href="#492">492</a> <em>     * @param headerName The name of the header to be returned.</em>
<a name="493" href="#493">493</a> <em>     *</em>
<a name="494" href="#494">494</a> <em>     * @return The specified request header.</em>
<a name="495" href="#495">495</a> <em>     * </em>
<a name="496" href="#496">496</a> <em>     * @since 3.0</em>
<a name="497" href="#497">497</a> <em>     */</em>
<a name="498" href="#498">498</a>     <strong>public</strong> Header getRequestHeader(String headerName) {
<a name="499" href="#499">499</a>         <strong>if</strong> (headerName == <strong>null</strong>) {
<a name="500" href="#500">500</a>             <strong>return</strong> <strong>null</strong>;
<a name="501" href="#501">501</a>         } <strong>else</strong> {
<a name="502" href="#502">502</a>             <strong>return</strong> getRequestHeaderGroup().getCondensedHeader(headerName);
<a name="503" href="#503">503</a>         }
<a name="504" href="#504">504</a>     }
<a name="505" href="#505">505</a> 
<a name="506" href="#506">506</a>     <em>/**<em>*</em></em>
<a name="507" href="#507">507</a> <em>     * Returns an array of the requests headers that the HTTP method currently has</em>
<a name="508" href="#508">508</a> <em>     *</em>
<a name="509" href="#509">509</a> <em>     * @return an array of my request headers.</em>
<a name="510" href="#510">510</a> <em>     */</em>
<a name="511" href="#511">511</a>     <strong>public</strong> Header[] getRequestHeaders() {
<a name="512" href="#512">512</a>         <strong>return</strong> getRequestHeaderGroup().getAllHeaders();
<a name="513" href="#513">513</a>     }
<a name="514" href="#514">514</a> 
<a name="515" href="#515">515</a>     <em>/**<em>*</em></em>
<a name="516" href="#516">516</a> <em>     * @see org.apache.commons.httpclient.HttpMethod#getRequestHeaders(java.lang.String)</em>
<a name="517" href="#517">517</a> <em>     */</em>
<a name="518" href="#518">518</a>     <strong>public</strong> Header[] getRequestHeaders(String headerName) {
<a name="519" href="#519">519</a>         <strong>return</strong> getRequestHeaderGroup().getHeaders(headerName);
<a name="520" href="#520">520</a>     }
<a name="521" href="#521">521</a> 
<a name="522" href="#522">522</a>     <em>/**<em>*</em></em>
<a name="523" href="#523">523</a> <em>     * Gets the {@link HeaderGroup header group} storing the request headers.</em>
<a name="524" href="#524">524</a> <em>     * </em>
<a name="525" href="#525">525</a> <em>     * @return a HeaderGroup</em>
<a name="526" href="#526">526</a> <em>     * </em>
<a name="527" href="#527">527</a> <em>     * @since 2.0beta1</em>
<a name="528" href="#528">528</a> <em>     */</em>
<a name="529" href="#529">529</a>     <strong>protected</strong> HeaderGroup getRequestHeaderGroup() {
<a name="530" href="#530">530</a>         <strong>return</strong> requestHeaders;
<a name="531" href="#531">531</a>     }
<a name="532" href="#532">532</a> 
<a name="533" href="#533">533</a>     <em>/**<em>*</em></em>
<a name="534" href="#534">534</a> <em>     * Gets the {@link HeaderGroup header group} storing the response trailer headers </em>
<a name="535" href="#535">535</a> <em>     * as per RFC 2616 section 3.6.1.</em>
<a name="536" href="#536">536</a> <em>     * </em>
<a name="537" href="#537">537</a> <em>     * @return a HeaderGroup</em>
<a name="538" href="#538">538</a> <em>     * </em>
<a name="539" href="#539">539</a> <em>     * @since 2.0beta1</em>
<a name="540" href="#540">540</a> <em>     */</em>
<a name="541" href="#541">541</a>     <strong>protected</strong> HeaderGroup getResponseTrailerHeaderGroup() {
<a name="542" href="#542">542</a>         <strong>return</strong> responseTrailerHeaders;
<a name="543" href="#543">543</a>     }
<a name="544" href="#544">544</a> 
<a name="545" href="#545">545</a>     <em>/**<em>*</em></em>
<a name="546" href="#546">546</a> <em>     * Gets the {@link HeaderGroup header group} storing the response headers.</em>
<a name="547" href="#547">547</a> <em>     * </em>
<a name="548" href="#548">548</a> <em>     * @return a HeaderGroup</em>
<a name="549" href="#549">549</a> <em>     * </em>
<a name="550" href="#550">550</a> <em>     * @since 2.0beta1</em>
<a name="551" href="#551">551</a> <em>     */</em>
<a name="552" href="#552">552</a>     <strong>protected</strong> HeaderGroup getResponseHeaderGroup() {
<a name="553" href="#553">553</a>         <strong>return</strong> responseHeaders;
<a name="554" href="#554">554</a>     }
<a name="555" href="#555">555</a>     
<a name="556" href="#556">556</a>     <em>/**<em>*</em></em>
<a name="557" href="#557">557</a> <em>     * @see org.apache.commons.httpclient.HttpMethod#getResponseHeaders(java.lang.String)</em>
<a name="558" href="#558">558</a> <em>     * </em>
<a name="559" href="#559">559</a> <em>     * @since 3.0</em>
<a name="560" href="#560">560</a> <em>     */</em>
<a name="561" href="#561">561</a>     <strong>public</strong> Header[] getResponseHeaders(String headerName) {
<a name="562" href="#562">562</a>         <strong>return</strong> getResponseHeaderGroup().getHeaders(headerName);
<a name="563" href="#563">563</a>     }
<a name="564" href="#564">564</a> 
<a name="565" href="#565">565</a>     <em>/**<em>*</em></em>
<a name="566" href="#566">566</a> <em>     * Returns the response status code.</em>
<a name="567" href="#567">567</a> <em>     *</em>
<a name="568" href="#568">568</a> <em>     * @return the status code associated with the latest response.</em>
<a name="569" href="#569">569</a> <em>     */</em>
<a name="570" href="#570">570</a>     <strong>public</strong> <strong>int</strong> getStatusCode() {
<a name="571" href="#571">571</a>         <strong>return</strong> statusLine.getStatusCode();
<a name="572" href="#572">572</a>     }
<a name="573" href="#573">573</a> 
<a name="574" href="#574">574</a>     <em>/**<em>*</em></em>
<a name="575" href="#575">575</a> <em>     * Provides access to the response status line.</em>
<a name="576" href="#576">576</a> <em>     *</em>
<a name="577" href="#577">577</a> <em>     * @return the status line object from the latest response.</em>
<a name="578" href="#578">578</a> <em>     * @since 2.0</em>
<a name="579" href="#579">579</a> <em>     */</em>
<a name="580" href="#580">580</a>     <strong>public</strong> StatusLine getStatusLine() {
<a name="581" href="#581">581</a>         <strong>return</strong> statusLine;
<a name="582" href="#582">582</a>     }
<a name="583" href="#583">583</a> 
<a name="584" href="#584">584</a>     <em>/**<em>*</em></em>
<a name="585" href="#585">585</a> <em>     * Checks if response data is available.</em>
<a name="586" href="#586">586</a> <em>     * @return &lt;tt>true&lt;/tt> if response data is available, &lt;tt>false&lt;/tt> otherwise.</em>
<a name="587" href="#587">587</a> <em>     */</em>
<a name="588" href="#588">588</a>     <strong>private</strong> <strong>boolean</strong> responseAvailable() {
<a name="589" href="#589">589</a>         <strong>return</strong> (responseBody != <strong>null</strong>) || (responseStream != <strong>null</strong>);
<a name="590" href="#590">590</a>     }
<a name="591" href="#591">591</a> 
<a name="592" href="#592">592</a>     <em>/**<em>*</em></em>
<a name="593" href="#593">593</a> <em>     * Returns an array of the response headers that the HTTP method currently has</em>
<a name="594" href="#594">594</a> <em>     * in the order in which they were read.</em>
<a name="595" href="#595">595</a> <em>     *</em>
<a name="596" href="#596">596</a> <em>     * @return an array of response headers.</em>
<a name="597" href="#597">597</a> <em>     */</em>
<a name="598" href="#598">598</a>     <strong>public</strong> Header[] getResponseHeaders() {
<a name="599" href="#599">599</a>         <strong>return</strong> getResponseHeaderGroup().getAllHeaders();
<a name="600" href="#600">600</a>     }
<a name="601" href="#601">601</a> 
<a name="602" href="#602">602</a>     <em>/**<em>*</em></em>
<a name="603" href="#603">603</a> <em>     * Gets the response header associated with the given name. Header name</em>
<a name="604" href="#604">604</a> <em>     * matching is case insensitive. &lt;tt>null&lt;/tt> will be returned if either</em>
<a name="605" href="#605">605</a> <em>     * &lt;i>headerName&lt;/i> is &lt;tt>null&lt;/tt> or there is no matching header for</em>
<a name="606" href="#606">606</a> <em>     * &lt;i>headerName&lt;/i>.</em>
<a name="607" href="#607">607</a> <em>     *</em>
<a name="608" href="#608">608</a> <em>     * @param headerName the header name to match</em>
<a name="609" href="#609">609</a> <em>     *</em>
<a name="610" href="#610">610</a> <em>     * @return the matching header</em>
<a name="611" href="#611">611</a> <em>     */</em>
<a name="612" href="#612">612</a>     <strong>public</strong> Header getResponseHeader(String headerName) {        
<a name="613" href="#613">613</a>         <strong>if</strong> (headerName == <strong>null</strong>) {
<a name="614" href="#614">614</a>             <strong>return</strong> <strong>null</strong>;
<a name="615" href="#615">615</a>         } <strong>else</strong> {
<a name="616" href="#616">616</a>             <strong>return</strong> getResponseHeaderGroup().getCondensedHeader(headerName);
<a name="617" href="#617">617</a>         }        
<a name="618" href="#618">618</a>     }
<a name="619" href="#619">619</a> 
<a name="620" href="#620">620</a> 
<a name="621" href="#621">621</a>     <em>/**<em>*</em></em>
<a name="622" href="#622">622</a> <em>     * Return the length (in bytes) of the response body, as specified in a</em>
<a name="623" href="#623">623</a> <em>     * &lt;tt>Content-Length&lt;/tt> header.</em>
<a name="624" href="#624">624</a> <em>     *</em>
<a name="625" href="#625">625</a> <em>     * &lt;p></em>
<a name="626" href="#626">626</a> <em>     * Return &lt;tt>-1&lt;/tt> when the content-length is unknown.</em>
<a name="627" href="#627">627</a> <em>     * &lt;/p></em>
<a name="628" href="#628">628</a> <em>     *</em>
<a name="629" href="#629">629</a> <em>     * @return content length, if &lt;tt>Content-Length&lt;/tt> header is available. </em>
<a name="630" href="#630">630</a> <em>     *          &lt;tt>0&lt;/tt> indicates that the request has no body.</em>
<a name="631" href="#631">631</a> <em>     *          If &lt;tt>Content-Length&lt;/tt> header is not present, the method </em>