jndiutils.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="91" href="#91">91</a>         r.add(<strong>new</strong> StringRefAddr(JmxUtils.NAME, (String)ht.get(JmxUtils.NAME)));
<a name="92" href="#92">92</a>         <em class="comment">// Put in a value to serve as a unique 'key'.</em>
<a name="93" href="#93">93</a>         r.add(<strong>new</strong> StringRefAddr(JmxUtils.KEY,
<a name="94" href="#94">94</a>                 on.getCanonicalKeyPropertyListString()));
<a name="95" href="#95">95</a>         <strong>return</strong> r;
<a name="96" href="#96">96</a>      }
<a name="97" href="#97">97</a>      
<a name="98" href="#98">98</a>      <em>/**<em>*</em></em>
<a name="99" href="#99">99</a>  <em>     * Get subcontext.  Only looks down one level.</em>
<a name="100" href="#100">100</a> <em>     * @param subContext Name of subcontext to return.</em>
<a name="101" href="#101">101</a> <em>     * @return Sub context.</em>
<a name="102" href="#102">102</a> <em>     * @throws NamingException </em>
<a name="103" href="#103">103</a> <em>     */</em>
<a name="104" href="#104">104</a>     <strong>public</strong> <strong>static</strong> Context getSubContext(<strong>final</strong> String subContext)
<a name="105" href="#105">105</a>     throws NamingException {
<a name="106" href="#106">106</a>         <strong>return</strong> getSubContext(getCompoundName(subContext));
<a name="107" href="#107">107</a>     }
<a name="108" href="#108">108</a>     
<a name="109" href="#109">109</a>     <em>/**<em>*</em></em>
<a name="110" href="#110">110</a> <em>     * Get subcontext.  Only looks down one level.</em>
<a name="111" href="#111">111</a> <em>     * @param subContext Name of subcontext to return.</em>
<a name="112" href="#112">112</a> <em>     * @return Sub context.</em>
<a name="113" href="#113">113</a> <em>     * @throws NamingException </em>
<a name="114" href="#114">114</a> <em>     */</em>
<a name="115" href="#115">115</a>     <strong>public</strong> <strong>static</strong> Context getSubContext(<strong>final</strong> CompoundName subContext)
<a name="116" href="#116">116</a>     throws NamingException {
<a name="117" href="#117">117</a>         Context context = <strong>new</strong> InitialContext();
<a name="118" href="#118">118</a>         <strong>try</strong> {
<a name="119" href="#119">119</a>             context = (Context)context.lookup(subContext);
<a name="120" href="#120">120</a>         } <strong>catch</strong> (NameNotFoundException e) {
<a name="121" href="#121">121</a>             context = context.createSubcontext(subContext); 
<a name="122" href="#122">122</a>         }
<a name="123" href="#123">123</a>         <strong>return</strong> context;
<a name="124" href="#124">124</a>     }
<a name="125" href="#125">125</a>     
<a name="126" href="#126">126</a>     <em>/**<em>*</em></em>
<a name="127" href="#127">127</a> <em>     * </em>
<a name="128" href="#128">128</a> <em>     * @param context A subcontext named for the &lt;code>on.getDomain()&lt;/code></em>
<a name="129" href="#129">129</a> <em>     * (Assumption is that caller already setup this subcontext).</em>
<a name="130" href="#130">130</a> <em>     * @param on The ObjectName we're to base our bind name on.</em>
<a name="131" href="#131">131</a> <em>     * @return Returns key we used binding this ObjectName.</em>
<a name="132" href="#132">132</a> <em>     * @throws NamingException</em>
<a name="133" href="#133">133</a> <em>     * @throws NullPointerException</em>
<a name="134" href="#134">134</a> <em>     */</em>
<a name="135" href="#135">135</a>     <strong>public</strong> <strong>static</strong> CompoundName bindObjectName(Context context,
<a name="136" href="#136">136</a>             <strong>final</strong> ObjectName on)
<a name="137" href="#137">137</a>     throws NamingException, NullPointerException {
<a name="138" href="#138">138</a>         <em class="comment">// I can't call getNameInNamespace in tomcat. Complains about</em>
<a name="139" href="#139">139</a>         <em class="comment">// unsupported operation -- that I can't get absolute name.</em>
<a name="140" href="#140">140</a>         <em class="comment">// Therefore just skip this test below -- at least for now.</em>
<a name="141" href="#141">141</a>         <em class="comment">// Check that passed context has the passed ObjectNames' name.</em>
<a name="142" href="#142">142</a>         <em class="comment">//</em>
<a name="143" href="#143">143</a> <em class="comment">//        String name = getCompoundName(context.getNameInNamespace()).toString();</em>
<a name="144" href="#144">144</a> <em class="comment">//        if (!name.equals(on.getDomain())) {</em>
<a name="145" href="#145">145</a> <em class="comment">//            throw new NamingException("The current context is " + name +</em>
<a name="146" href="#146">146</a> <em class="comment">//                " but domain is " + on.getDomain() + " (Was expecting " +</em>
<a name="147" href="#147">147</a> <em class="comment">//                "them to be the same).");</em>
<a name="148" href="#148">148</a> <em class="comment">//        }</em>
<a name="149" href="#149">149</a>         CompoundName key = getCompoundName(on);
<a name="150" href="#150">150</a>         context.rebind(key, getReference(on));
<a name="151" href="#151">151</a>         <strong>return</strong> key;
<a name="152" href="#152">152</a>     }
<a name="153" href="#153">153</a>     
<a name="154" href="#154">154</a>     <strong>public</strong> <strong>static</strong> CompoundName unbindObjectName(<strong>final</strong> Context context,
<a name="155" href="#155">155</a>             <strong>final</strong> ObjectName on)
<a name="156" href="#156">156</a>     throws NullPointerException, NamingException {
<a name="157" href="#157">157</a>         CompoundName key = getCompoundName(on);
<a name="158" href="#158">158</a>         context.unbind(key);
<a name="159" href="#159">159</a>         <strong>return</strong> key;
<a name="160" href="#160">160</a>     }
<a name="161" href="#161">161</a> 
<a name="162" href="#162">162</a> 
<a name="163" href="#163">163</a>     <em>/**<em>*</em></em>
<a name="164" href="#164">164</a> <em>     * Testing code.</em>
<a name="165" href="#165">165</a> <em>     * @param args Command line arguments.</em>
<a name="166" href="#166">166</a> <em>     * @throws NullPointerException </em>
<a name="167" href="#167">167</a> <em>     * @throws MalformedObjectNameException </em>
<a name="168" href="#168">168</a> <em>     * @throws NamingException </em>
<a name="169" href="#169">169</a> <em>     * @throws InvalidNameException </em>
<a name="170" href="#170">170</a> <em>     */</em>
<a name="171" href="#171">171</a>     <strong>public</strong> <strong>static</strong> <strong>void</strong> main(String[] args)
<a name="172" href="#172">172</a>     throws MalformedObjectNameException, NullPointerException,
<a name="173" href="#173">173</a>     InvalidNameException, NamingException {
<a name="174" href="#174">174</a>         <strong>final</strong> ObjectName on = <strong>new</strong> ObjectName(<span class="string">"org.archive.crawler:"</span> +
<a name="175" href="#175">175</a>                 <span class="string">"type=Service,name=Heritrix00,host=debord.archive.org"</span>);
<a name="176" href="#176">176</a>         Context c = getSubContext(getCompoundName(on.getDomain()));
<a name="177" href="#177">177</a>         CompoundName key = bindObjectName(c, on);
<a name="178" href="#178">178</a>         Reference r = (Reference)c.lookup(key);
<a name="179" href="#179">179</a>         <strong>for</strong> (Enumeration e = r.getAll(); e.hasMoreElements();) {
<a name="180" href="#180">180</a>             System.out.println(e.nextElement());
<a name="181" href="#181">181</a>         }
<a name="182" href="#182">182</a>         unbindObjectName(c, on);
<a name="183" href="#183">183</a>     }
<a name="184" href="#184">184</a> }
</pre>
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