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<svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Fizz简介</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/guide/intro/" class="sidebar-link">什么是Fizz网关</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/guide/intro/#什么是fizz网关" class="sidebar-link">什么是Fizz网关</a></li><li class="sidebar-sub-header"><a href="/guide/intro/#fizz的设计" class="sidebar-link">Fizz的设计</a></li><li class="sidebar-sub-header"><a href="/guide/intro/#产品特性" 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class="sidebar-link">接入路由转发</a></li></ul></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>服务编排</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/guide/aggregate/" class="sidebar-link">服务编排介绍</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/guide/aggregate/#什么是服务编排" class="sidebar-link">什么是服务编排</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/#举例说明" class="sidebar-link">举例说明</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/#服务编排架构" class="sidebar-link">服务编排架构</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/#适用场景" class="sidebar-link">适用场景</a></li></ul></li><li><a href="/guide/aggregate/overview.html" class="sidebar-link">步骤总览</a></li><li><a href="/guide/aggregate/configuration.html" class="sidebar-link">服务编排配置</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#创建服务" class="sidebar-link">创建服务</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#创建聚合接口" class="sidebar-link">创建聚合接口</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#配置输入" class="sidebar-link">配置输入</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#配置校验结果" class="sidebar-link">配置校验结果</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#配置步骤" class="sidebar-link">配置步骤</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#配置输出" class="sidebar-link">配置输出</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#脚本-2" class="sidebar-link">脚本</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#异常处理" class="sidebar-link">异常处理</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#配置路由" class="sidebar-link">配置路由</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#在线测试" class="sidebar-link">在线测试</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#导入导出" class="sidebar-link">导入导出</a></li><li class="sidebar-sub-header"><a href="/guide/aggregate/configuration.html#发布-下线和审核" class="sidebar-link">发布|下线和审核</a></li></ul></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>插件机制</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/guide/plugin/" aria-current="page" class="active sidebar-link">插件开发</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/guide/plugin/#概述" class="sidebar-link">概述</a></li><li class="sidebar-sub-header"><a href="/guide/plugin/#gateway开发" class="sidebar-link">gateway开发</a></li><li class="sidebar-sub-header"><a href="/guide/plugin/#manager配置" class="sidebar-link">manager配置</a></li></ul></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>基准测试</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/guide/benchmark/" class="sidebar-link">benchmark</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/guide/benchmark/#基准测试结果" class="sidebar-link">基准测试结果</a></li><li class="sidebar-sub-header"><a href="/guide/benchmark/#基准测试详情" class="sidebar-link">基准测试详情</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/guide/benchmark/#硬件环境" class="sidebar-link">硬件环境</a></li><li class="sidebar-sub-header"><a href="/guide/benchmark/#压测工具" class="sidebar-link">压测工具</a></li><li class="sidebar-sub-header"><a href="/guide/benchmark/#压测结果截图" class="sidebar-link">压测结果截图</a></li></ul></li></ul></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>管理后台</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/guide/manager/manager_overview.html" class="sidebar-link">管理后台简介</a></li><li><a href="/guide/manager/manager_gateway_group.html" class="sidebar-link">网关分组</a></li><li><a href="/guide/manager/manager_plugin.html" class="sidebar-link">插件管理</a></li><li><a href="/guide/manager/manager_app_id.html" class="sidebar-link">appID管理</a></li><li><a href="/guide/manager/manager_api_auth.html" class="sidebar-link">路由管理</a></li><li><a href="/guide/manager/manager_service.html" class="sidebar-link">服务管理</a></li><li><a href="/guide/manager/manager_aggregate.html" class="sidebar-link">接口列表</a></li><li><a href="/guide/manager/manager_aggregate_op_log.html" class="sidebar-link">操作日志</a></li><li><a href="/guide/manager/manager_gateway_aggregate_cache.html" class="sidebar-link">网关缓存</a></li><li><a href="/guide/manager/manager_aggregate_my_apply.html" class="sidebar-link">我的申请</a></li><li><a href="/guide/manager/manager_aggregate_approve.html" class="sidebar-link">待审核</a></li><li><a href="/guide/manager/manager_aggregate_approve_op_log.html" class="sidebar-link">审核日志</a></li><li><a href="/guide/manager/manager_role.html" class="sidebar-link">角色管理</a></li><li><a href="/guide/manager/manager_user.html" class="sidebar-link">用户管理</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h2 id="概述"><a href="#概述" class="header-anchor">#</a> 概述</h2> <p>当需要在gateway中加入自定义的逻辑时，可通过fizz的插件机制实现，插件：<br>
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1、类似spring的WebFilter，是fizz内部的WebFilter，由fizz调度；<br>
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2、对不同的请求，可配置不同的上下文参数，可通过manager完成配置；<br>
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3、若有多个插件，当前插件可获取前面插件的执行结果。</p> <p>插件的开发和应用，分gateway开发、manager配置两部分，下面以一个例子，依次介绍。</p> <h2 id="gateway开发"><a href="#gateway开发" class="header-anchor">#</a> gateway开发</h2> <div class="language-java extra-class"><pre class="language-java"><code> 实现
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<span class="token keyword">public</span> <span class="token keyword">abstract</span> <span class="token keyword">class</span> <span class="token class-name">PluginFilter</span> <span class="token punctuation">{</span>
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<span class="token keyword">public</span> <span class="token keyword">abstract</span> <span class="token class-name">Mono</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">Void</span><span class="token punctuation">></span></span> <span class="token function">doFilter</span><span class="token punctuation">(</span><span class="token class-name">ServerWebExchange</span> exchange<span class="token punctuation">,</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">></span></span> config<span class="token punctuation">,</span> <span class="token class-name">String</span> fixedConfig<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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即定义了一个插件。
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比如
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<span class="token annotation punctuation">@Component</span><span class="token punctuation">(</span><span class="token class-name">TestPluginFilter</span><span class="token punctuation">.</span>TEST_PLUGIN_FILTER<span class="token punctuation">)</span>
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<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">TestPluginFilter</span> <span class="token keyword">extends</span> <span class="token class-name">PluginFilter</span> <span class="token punctuation">{</span>
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<span class="token keyword">private</span> <span class="token keyword">static</span> <span class="token keyword">final</span> <span class="token class-name">Logger</span> log <span class="token operator">=</span> <span class="token class-name">LoggerFactory</span><span class="token punctuation">.</span><span class="token function">getLogger</span><span class="token punctuation">(</span><span class="token class-name">TestPluginFilter</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">final</span> <span class="token class-name">String</span> TEST_PLUGIN_FILTER <span class="token operator">=</span> <span class="token string">"testPlugin"</span><span class="token punctuation">;</span>
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<span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token class-name">Mono</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">Void</span><span class="token punctuation">></span></span> <span class="token function">doFilter</span><span class="token punctuation">(</span><span class="token class-name">ServerWebExchange</span> exchange<span class="token punctuation">,</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">></span></span> config<span class="token punctuation">,</span> <span class="token class-name">String</span> fixedConfig<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">String</span> rid <span class="token operator">=</span> exchange<span class="token punctuation">.</span><span class="token function">getRequest</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">Boolean</span> logReqId <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">Boolean</span><span class="token punctuation">)</span> config<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"logReqId"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 是否记录请求id日志，可通过manager配置</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>logReqId <span class="token operator">==</span> <span class="token keyword">null</span> <span class="token operator">||</span> logReqId<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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log<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span>exchange<span class="token punctuation">.</span><span class="token function">getRequest</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getURI</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">" 的请求id: "</span> <span class="token operator">+</span> rid<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token class-name">Boolean</span> appendFizzRsv <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">Boolean</span><span class="token punctuation">)</span> config<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"appendFizzRsv"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>appendFizzRsv <span class="token operator">==</span> <span class="token keyword">null</span> <span class="token operator">||</span> appendFizzRsv<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">WebUtils</span><span class="token punctuation">.</span><span class="token function">appendHeader</span><span class="token punctuation">(</span>exchange<span class="token punctuation">,</span> <span class="token string">"FIZZ-RSV"</span><span class="token punctuation">,</span> rid<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">return</span> <span class="token class-name">WebUtils</span><span class="token punctuation">.</span><span class="token function">transmitSuccessFilterResultAndEmptyMono</span><span class="token punctuation">(</span>exchange<span class="token punctuation">,</span> TEST_PLUGIN_FILTER<span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 保存插件执行结果，并返回</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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这个插件，插件必须是一个spring的<span class="token class-name">Component</span>（或子注解），且要有id，这个插件的id是testPlugin，它实现了两个功能，记录请求id日志，转发请求时添加FIZZ<span class="token operator">-</span>RSV请求头，并且功能是可打开或关闭的。
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另外可通过：
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<span class="token class-name">WebUtils</span><span class="token punctuation">.</span><span class="token function">getPrevFilterResult</span><span class="token punctuation">(</span>exchange<span class="token punctuation">)</span><span class="token punctuation">;</span> 获取上一个插件的执行结果，
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<span class="token class-name">WebUtils</span><span class="token punctuation">.</span><span class="token function">getFilterResult</span><span class="token punctuation">(</span>exchange<span class="token punctuation">,</span> <span class="token string">"plugin.id"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> 获取已执行的任意一个插件的执行结果。
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</code></pre></div><h2 id="manager配置"><a href="#manager配置" class="header-anchor">#</a> manager配置</h2> <p>1、定义插件</p> <div class="language-sql extra-class"><pre class="language-sql"><code> 在插件表中，定义上面的插件：
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<span class="token keyword">INSERT</span> <span class="token keyword">INTO</span> <span class="token punctuation">`</span>tb_plugin<span class="token punctuation">`</span> <span class="token punctuation">(</span><span class="token punctuation">`</span>eng_name<span class="token punctuation">`</span><span class="token punctuation">,</span> <span class="token punctuation">`</span>chn_name<span class="token punctuation">`</span><span class="token punctuation">,</span> <span class="token punctuation">`</span>config<span class="token punctuation">`</span><span class="token punctuation">,</span> <span class="token punctuation">`</span><span class="token keyword">order</span><span class="token punctuation">`</span><span class="token punctuation">)</span>
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<span class="token keyword">VALUES</span>
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<span class="token punctuation">(</span>
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<span class="token string">'testPlugin'</span><span class="token punctuation">,</span>
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<span class="token string">'测试插件'</span><span class="token punctuation">,</span>
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<span class="token string">'[{\"field\":\"logReqId\",\"label\":\"打印请求id日志\",\"component\":\"radio\",\"dataType\":\"boolean\",\"default\":false,\"options\":[{\"label\":\"是\",\"value\":true},{\"label\":\"否\",\"value\":false}]},{\"field\":\"appendFizzRsv\",\"label\":\"添加fizzRsv请求头\",\"component\":\"radio\",\"dataType\":\"boolean\",\"default\":false,\"options\":[{\"label\":\"是\",\"value\":true},{\"label\":\"否\",\"value\":false}]}]'</span><span class="token punctuation">,</span>
|
||
<span class="token number">250</span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
</code></pre></div><div class="language-json extra-class"><pre class="language-json"><code> eng_name为插件的id，chn_name为插件中文名，order为插件的执行顺序，也是插件在界面上的显示顺序。
|
||
|
||
config：
|
||
<span class="token punctuation">[</span>
|
||
<span class="token punctuation">{</span>
|
||
<span class="token property">"field"</span><span class="token operator">:</span><span class="token string">"logReqId"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"label"</span><span class="token operator">:</span><span class="token string">"打印请求id日志"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"component"</span><span class="token operator">:</span><span class="token string">"radio"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"dataType"</span><span class="token operator">:</span><span class="token string">"boolean"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"default"</span><span class="token operator">:</span><span class="token boolean">false</span><span class="token punctuation">,</span>
|
||
<span class="token property">"options"</span><span class="token operator">:</span><span class="token punctuation">[</span>
|
||
<span class="token punctuation">{</span>
|
||
<span class="token property">"label"</span><span class="token operator">:</span><span class="token string">"是"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"value"</span><span class="token operator">:</span><span class="token boolean">true</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">{</span>
|
||
<span class="token property">"label"</span><span class="token operator">:</span><span class="token string">"否"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"value"</span><span class="token operator">:</span><span class="token boolean">false</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token punctuation">]</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">{</span>
|
||
<span class="token property">"field"</span><span class="token operator">:</span><span class="token string">"appendFizzRsv"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"label"</span><span class="token operator">:</span><span class="token string">"添加fizzRsv请求头"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"component"</span><span class="token operator">:</span><span class="token string">"radio"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"dataType"</span><span class="token operator">:</span><span class="token string">"boolean"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"default"</span><span class="token operator">:</span><span class="token boolean">false</span><span class="token punctuation">,</span>
|
||
<span class="token property">"options"</span><span class="token operator">:</span><span class="token punctuation">[</span>
|
||
<span class="token punctuation">{</span>
|
||
<span class="token property">"label"</span><span class="token operator">:</span><span class="token string">"是"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"value"</span><span class="token operator">:</span><span class="token boolean">true</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">{</span>
|
||
<span class="token property">"label"</span><span class="token operator">:</span><span class="token string">"否"</span><span class="token punctuation">,</span>
|
||
<span class="token property">"value"</span><span class="token operator">:</span><span class="token boolean">false</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token punctuation">]</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token punctuation">]</span>
|
||
前端据此生成插件的配置表单，具体参前端说明。
|
||
</code></pre></div><p>2、应用插件</p> <p>如对
|
||
<img src="/xapi.png" alt=""></p> <p>接口应用插件：
|
||
<img src="/test-plugin.png" alt=""></p> <p>上面配置的"打印请求id日志"、"添加fizzRsv请求头"，对应</p> <div class="language-java extra-class"><pre class="language-java"><code><span class="token keyword">public</span> <span class="token class-name">Mono</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">Void</span><span class="token punctuation">></span></span> <span class="token function">doFilter</span><span class="token punctuation">(</span><span class="token class-name">ServerWebExchange</span> exchange<span class="token punctuation">,</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">,</span> <span class="token class-name">Object</span><span class="token punctuation">></span></span> config<span class="token punctuation">,</span> <span class="token class-name">String</span> fixedConfig<span class="token punctuation">)</span>
|
||
</code></pre></div><p>中config的logReqId和appendFizzRsv key。</p></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">上次更新:</span> <span class="time">2020-11-9 11:50</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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