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<!DOCTYPE html>
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<article id="post-Windows下查看进程及结束进程命令" class="article article-type-post" itemscope itemprop="blogPost">
<div class="article-meta">
<a href="/2017/10/22/Windows下查看进程及结束进程命令/" class="article-date">
<time datetime="2017-10-22T12:09:24.000Z" itemprop="datePublished">2017-10-22</time>
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<h1 itemprop="name">
<a class="article-title" href="/2017/10/22/Windows下查看进程及结束进程命令/">Windows下查看进程及结束进程命令</a>
</h1>
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<div class="article-entry" itemprop="articleBody">
<ol>
<li>查看占用8080端口的进程号</li>
</ol>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">netstat –aon | findstr “8080”</div></pre></td></tr></table></figure>
<p>结果：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 3500</div></pre></td></tr></table></figure></p>
<p>可知，进程号为3500的进程占用了8080端口<br>可以使用命令 tasklist | findstr “3500”进一步查看3500进程的具体信息。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">tasklist | findstr “3500”</div></pre></td></tr></table></figure></p>
<p>结果：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">javaw.exe 3500 Console 0 28,792 K</div></pre></td></tr></table></figure></p>
<p>可知3500进程为javaw.exe。</p>
<ol>
<li>杀掉进程</li>
</ol>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">tskill 3500</div></pre></td></tr></table></figure>
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<article id="post-CAS的Ticket票据" class="article article-type-post" itemscope itemprop="blogPost">
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<a href="/2017/03/25/CAS的Ticket票据/" class="article-date">
<time datetime="2017-03-25T13:28:02.000Z" itemprop="datePublished">2017-03-25</time>
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<a class="article-title" href="/2017/03/25/CAS的Ticket票据/">CAS的Ticket票据</a>
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<h4 id="TGT（Ticket-Grangting-Ticket）"><a href="#TGT（Ticket-Grangting-Ticket）" class="headerlink" title="TGT（Ticket Grangting Ticket）"></a>TGT（Ticket Grangting Ticket）</h4><p>TGT是CAS为用户签发的登录票据，拥有了TGT，用户就可以证明自己在CAS成功登录过。TGT封装了Cookie值以及此Cookie值对应的用户信息。用户在CAS认证成功后，CAS生成cookie（叫TGC），写入浏览器，同时生成一个TGT对象，放入自己的缓存，TGT对象的ID就是cookie的值。当HTTP再次请求到来时，如果传过来的有CAS生成的cookie，则CAS以此cookie值为key查询缓存中有无TGT ，如果有的话，则说明用户之前登录过，如果没有，则用户需要重新登录。</p>
<h4 id="TGC-（Ticket-granting-cookie）："><a href="#TGC-（Ticket-granting-cookie）：" class="headerlink" title="TGC （Ticket-granting cookie）："></a>TGC （Ticket-granting cookie）：</h4><p>存放用户身份认证凭证的cookie，在浏览器和CAS Server间通讯时使用，并且只能基于安全通道传输（Https），是CAS Server用来明确用户身份的凭证。</p>
<h4 id="ST（Service-Ticket）"><a href="#ST（Service-Ticket）" class="headerlink" title="ST（Service Ticket）"></a>ST（Service Ticket）</h4><p>ST是CAS为用户签发的访问某一service的票据。用户访问service时，service发现用户没有ST，则要求用户去CAS获取ST。用户向CAS发出获取ST的请求，如果用户的请求中包含cookie，则CAS会以此cookie值为key查询缓存中有无TGT，如果存在TGT，则用此TGT签发一个ST，返回给用户。用户凭借ST去访问service，service拿ST去CAS验证，验证通过后，允许用户访问资源。</p>
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<article id="post-logstash" class="article article-type-post" itemscope itemprop="blogPost">
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<a href="/2017/03/11/logstash/" class="article-date">
<time datetime="2017-03-11T08:46:14.000Z" itemprop="datePublished">2017-03-11</time>
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<a class="article-title" href="/2017/03/11/logstash/">logstash</a>
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<p><img src="https://www.elastic.co/guide/en/logstash/current/static/images/logstash.png" alt="logstash"></p>
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<article id="java-接口中属性和方法的默认修饰符" class="article article-type-java" itemscope itemprop="blogPost">
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<a href="/2017/03/07/接口中属性和方法的默认修饰符/" class="article-date">
<time datetime="2017-03-07T06:40:23.000Z" itemprop="datePublished">2017-03-07</time>
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<a class="article-title" href="/2017/03/07/接口中属性和方法的默认修饰符/">接口中属性和方法的默认修饰符</a>
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<h4 id="默认修饰符"><a href="#默认修饰符" class="headerlink" title="默认修饰符"></a>默认修饰符</h4><p>java 接口 interface 中<br>属性的默认修饰符是 <code>public static final</code><br>方法的默认修饰符是 <code>public abstract</code></p>
<h4 id="推荐"><a href="#推荐" class="headerlink" title="推荐"></a>推荐</h4><p>阿里巴巴发布的<a href="https://yq.aliyun.com/attachment/download/?id=1200" target="_blank" rel="external">《Java 开发手册》</a>中推荐：接口类中的方法和属性不要加任何修饰符号（<code>public</code> 也不要加），保持代码的简洁性，并加上有效的 Javadoc 注释。尽量不要在借口里面定义变量，如果一定要定义变量，肯定是与接口方法相关，并且是整个应用的基础常量。</p>
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<article id="post-Spring-Web-MVC-异常处理" class="article article-type-post" itemscope itemprop="blogPost">
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<a href="/2017/02/28/Spring-Web-MVC-异常处理/" class="article-date">
<time datetime="2017-02-28T06:31:26.000Z" itemprop="datePublished">2017-02-28</time>
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<a class="article-title" href="/2017/02/28/Spring-Web-MVC-异常处理/">Spring Web MVC 异常处理</a>
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<p>SpringMVC 提供两种范围的异常处理方法，一种是局部异常处理，另一种是全局异常处理。</p>
<h4 id="局部异常处理"><a href="#局部异常处理" class="headerlink" title="局部异常处理"></a>局部异常处理</h4><p>在 <code>@Controller</code> 类中用 <code>@ExceptionHandler</code> 声明一个局部异常处理器，这个异常处理器会处理当前 <code>@Controller</code> 类中有 <code>@RequestMapping</code> 注解的方法抛出的异常。<br><figure class="highlight java"><figcaption><span>SimpleController.java</span></figcaption><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line"><span class="meta">@Controller</span></div><div class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">SimpleController</span> </span>{</div><div class="line"></div><div class="line"> <span class="meta">@ExceptionHandler</span>(IOException.class)</div><div class="line"> <span class="function"><span class="keyword">public</span> ResponseEntity<String> <span class="title">handleIOException</span><span class="params">(IOException ex)</span> </span>{</div><div class="line"> <span class="comment">//prepare responseEntity</span></div><div class="line"> }</div><div class="line"></div><div class="line">}</div></pre></td></tr></table></figure></p>
<h4 id="全局异常处理"><a href="#全局异常处理" class="headerlink" title="全局异常处理"></a>全局异常处理</h4><p>在 <code>@ControllerAdvice</code> 类中用 <code>@ExceptionHandler</code> 声明一个全局异常处理器，这个异常处理器会处理所有 <code>@Controller</code> 类中有 <code>@RequestMapping</code> 注解的方法抛出的异常。<br><figure class="highlight java"><figcaption><span>GlobalExceptionHandler.java</span></figcaption><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line"><span class="meta">@ControllerAdvice</span></div><div class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">GlobalExceptionHandler</span> </span>{</div><div class="line"></div><div class="line"> <span class="meta">@ExceptionHandler</span></div><div class="line"> <span class="keyword">public</span> <span class="meta">@ResponseBody</span> <span class="function">String <span class="title">handleBusinessException</span><span class="params">(BusinessException ex)</span> </span>{</div><div class="line"> <span class="keyword">return</span> <span class="string">"Handled BusinessException"</span>;</div><div class="line"> }</div><div class="line"></div><div class="line">}</div></pre></td></tr></table></figure></p>
<h4 id="使用注意"><a href="#使用注意" class="headerlink" title="使用注意"></a>使用注意</h4><p><code>@ExceptionHandler</code> 的值可以是一个异常类型或者一个异常类型的数组，用来指定该处理器处理的异常类型。也可以不设值，不设值的时候，默认用被注解方法的形参来指定要处理的异常类型。</p>
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<article id="post-StringBuffer和StringBuilder" class="article article-type-post" itemscope itemprop="blogPost">
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<time datetime="2017-02-27T07:28:32.000Z" itemprop="datePublished">2017-02-27</time>
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<a class="article-title" href="/2017/02/27/StringBuffer和StringBuilder/">StringBuffer和StringBuilder</a>
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<h4 id="StringBuffer"><a href="#StringBuffer" class="headerlink" title="StringBuffer"></a>StringBuffer</h4><p>线程安全的可变字符序列</p>
<h4 id="StringBuilder"><a href="#StringBuilder" class="headerlink" title="StringBuilder"></a>StringBuilder</h4><p>非线程安全的可变字符序列</p>
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<a href="/tags/CAS/" style="font-size: 10px;">CAS</a> <a href="/tags/ELK/" style="font-size: 10px;">ELK</a> <a href="/tags/ST/" style="font-size: 10px;">ST</a> <a href="/tags/SpringMVC/" style="font-size: 10px;">SpringMVC</a> <a href="/tags/StringBuffer/" style="font-size: 10px;">StringBuffer</a> <a href="/tags/StringBuilder/" style="font-size: 10px;">StringBuilder</a> <a href="/tags/TGT/" style="font-size: 10px;">TGT</a> <a href="/tags/Ticket/" style="font-size: 10px;">Ticket</a> <a href="/tags/java/" style="font-size: 20px;">java</a> <a href="/tags/logstash/" style="font-size: 10px;">logstash</a> <a href="/tags/修饰符/" style="font-size: 10px;">修饰符</a> <a href="/tags/异常处理/" style="font-size: 10px;">异常处理</a>
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