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3.0.5-SNAPSHOT
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< li class = "toctree-l3" > < a class = "reference internal" href = "#" > 参数说明< / a > < / li >
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< li class = "toctree-l4" > < a class = "reference internal" href = "#" > 观察方法出参和返回值< / a > < / li >
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< li > watch< / li >
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< span id = "watch" > < / span > < h1 > watch< a class = "headerlink" href = "#watch" title = "永久链接至标题" > ¶< / a > < / h1 >
< blockquote >
< div > 方法执行数据观测< / div > < / blockquote >
< p > 让你能方便的观察到指定方法的调用情况。能观察到的范围为：< code class = "docutils literal notranslate" > < span class = "pre" > 返回值< / span > < / code > 、< code class = "docutils literal notranslate" > < span class = "pre" > 抛出异常< / span > < / code > 、< code class = "docutils literal notranslate" > < span class = "pre" > 入参< / span > < / code > ，通过编写 < / p >
< div class = "section" id = "" >
< span id = "id1" > < / span > < h2 > 参数说明< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > watch 的参数比较多，主要是因为它能在 4 个不同的场景观察对象< / p >
< table border = "1" class = "docutils" >
< thead >
< tr >
< th align = "right" > 参数名称< / th >
< th align = "left" > 参数说明< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td align = "right" > < em > class-pattern< / em > < / td >
< td align = "left" > 类名表达式匹配< / td >
< / tr >
< tr >
< td align = "right" > < em > method-pattern< / em > < / td >
< td align = "left" > 方法名表达式匹配< / td >
< / tr >
< tr >
< td align = "right" > < em > express< / em > < / td >
< td align = "left" > 观察表达式< / td >
< / tr >
< tr >
< td align = "right" > < em > condition-express< / em > < / td >
< td align = "left" > 条件表达式< / td >
< / tr >
< tr >
< td align = "right" > [b]< / td >
< td align = "left" > 在< strong > 方法调用之前< / strong > 观察< / td >
< / tr >
< tr >
< td align = "right" > [e]< / td >
< td align = "left" > 在< strong > 方法异常之后< / strong > 观察< / td >
< / tr >
< tr >
< td align = "right" > [s]< / td >
< td align = "left" > 在< strong > 方法返回之后< / strong > 观察< / td >
< / tr >
< tr >
< td align = "right" > [f]< / td >
< td align = "left" > 在< strong > 方法结束之后< / strong > (正常返回和异常返回)观察< / td >
< / tr >
< tr >
< td align = "right" > [E]< / td >
< td align = "left" > 开启正则表达式匹配，默认为通配符匹配< / td >
< / tr >
< tr >
< td align = "right" > [x:]< / td >
< td align = "left" > 指定输出结果的属性遍历深度，默认为 1< / td >
< / tr >
< / tbody >
< / table > < p > 这里重点要说明的是观察表达式，观察表达式的构成主要由 < code class = "docutils literal notranslate" > < span class = "pre" > " {params,returnObj}" < / span > < / code > ，只要是一个合法的 ognl 表达式，都能被正常支持。< / p >
< p > 观察的维度也比较多，主要体现在参数 < code class = "docutils literal notranslate" > < span class = "pre" > advice< / span > < / code > 的数据结构上。< code class = "docutils literal notranslate" > < span class = "pre" > Advice< / span > < / code > 参数最主要是封装了通知节点的所有信息。请参考< a class = "reference internal" href = "advice-class.html" > < span class = "doc" > 表达式核心变量< / span > < / a > 中关于该节点的描述。< / p >
< ul class = "simple" >
< li > 特殊用法请参考：< a class = "reference external" href = "https://github.com/alibaba/arthas/issues/71" > https://github.com/alibaba/arthas/issues/71< / a > < / li >
< li > OGNL表达式官网： < a class = "reference external" href = "https://commons.apache.org/proper/commons-ognl/language-guide.html" > https://commons.apache.org/proper/commons-ognl/language-guide.html< / a > < / li >
< / ul >
< p > < strong > 特别说明< / strong > ： < / p >
< ul class = "simple" >
< li > watch 命令定义了4个观察事件点， < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > 方法调用前，< code class = "docutils literal notranslate" > < span class = "pre" > -e< / span > < / code > 方法异常后，< code class = "docutils literal notranslate" > < span class = "pre" > -s< / span > < / code > 方法返回后和 < code class = "docutils literal notranslate" > < span class = "pre" > -f< / span > < / code > 方法结束后< / li >
< li > 4个观察事件点 < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > 、< code class = "docutils literal notranslate" > < span class = "pre" > -e< / span > < / code > 、< code class = "docutils literal notranslate" > < span class = "pre" > -s< / span > < / code > 默认关闭，< code class = "docutils literal notranslate" > < span class = "pre" > -f< / span > < / code > 默认打开，当指定观察点被打开后，在相应事件点会对观察表达式进行求值并输出< / li >
< li > 这里要注意< code class = "docutils literal notranslate" > < span class = "pre" > 方法入参< / span > < / code > 和< code class = "docutils literal notranslate" > < span class = "pre" > 方法出参< / span > < / code > 的区别，有可能在中间被修改导致前后不一致，除了 < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > 事件点 < code class = "docutils literal notranslate" > < span class = "pre" > params< / span > < / code > 代表方法入参外，其余事件都代表方法出参< / li >
< li > 当使用 < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > 时，由于观察事件点是在方法调用前，此时返回值或异常均不存在< / li >
< / ul >
< / div >
< div class = "section" id = "" >
< span id = "id2" > < / span > < h2 > 使用参考< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 代码示例：< / p >
< div class = "highlight-java notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "kd" > public< / span > < span class = "kt" > void< / span > < span class = "nf" > execute< / span > < span class = "o" > ()< / span > < span class = "o" > {< / span >
< span class = "n" > List< / span > < span class = "o" > < < / span > < span class = "n" > String< / span > < span class = "o" > > < / span > < span class = "n" > list< / span > < span class = "o" > =< / span > < span class = "k" > new< / span > < span class = "n" > ArrayList< / span > < span class = "o" > < < / span > < span class = "n" > String< / span > < span class = "o" > > ();< / span >
< span class = "n" > list< / span > < span class = "o" > .< / span > < span class = "na" > add< / span > < span class = "o" > (< / span > < span class = "s" > " a" < / span > < span class = "o" > );< / span >
< span class = "n" > list< / span > < span class = "o" > .< / span > < span class = "na" > add< / span > < span class = "o" > (< / span > < span class = "s" > " b" < / span > < span class = "o" > );< / span >
< span class = "n" > List< / span > < span class = "o" > < < / span > < span class = "n" > String< / span > < span class = "o" > > < / span > < span class = "n" > list2< / span > < span class = "o" > =< / span > < span class = "k" > new< / span > < span class = "n" > ArrayList< / span > < span class = "o" > < < / span > < span class = "n" > String< / span > < span class = "o" > > ();< / span >
< span class = "n" > list2< / span > < span class = "o" > .< / span > < span class = "na" > add< / span > < span class = "o" > (< / span > < span class = "s" > " c" < / span > < span class = "o" > );< / span >
< span class = "n" > list2< / span > < span class = "o" > .< / span > < span class = "na" > add< / span > < span class = "o" > (< / span > < span class = "s" > " d" < / span > < span class = "o" > );< / span >
< span class = "kt" > int< / span > < span class = "n" > len< / span > < span class = "o" > =< / span > < span class = "n" > add< / span > < span class = "o" > (< / span > < span class = "n" > list< / span > < span class = "o" > ,< / span > < span class = "n" > list2< / span > < span class = "o" > );< / span >
< span class = "o" > }< / span >
< span class = "kd" > private< / span > < span class = "kd" > static< / span > < span class = "kt" > int< / span > < span class = "nf" > add< / span > < span class = "o" > (< / span > < span class = "n" > List< / span > < span class = "o" > < < / span > < span class = "n" > String< / span > < span class = "o" > > < / span > < span class = "n" > list< / span > < span class = "o" > ,< / span > < span class = "n" > List< / span > < span class = "o" > < < / span > < span class = "n" > String< / span > < span class = "o" > > < / span > < span class = "n" > list2< / span > < span class = "o" > )< / span > < span class = "o" > {< / span >
< span class = "n" > list< / span > < span class = "o" > .< / span > < span class = "na" > addAll< / span > < span class = "o" > (< / span > < span class = "n" > list2< / span > < span class = "o" > );< / span >
< span class = "k" > return< / span > < span class = "n" > list< / span > < span class = "o" > .< / span > < span class = "na" > size< / span > < span class = "o" > ();< / span >
< span class = "o" > }< / span >
< / pre > < / div >
< / div >
< div class = "section" id = "" >
< span id = "id3" > < / span > < h3 > 观察方法出参和返回值< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h3 >
< div class = "highlight-shell notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add < span class = "s2" > " {params,returnObj}" < / span > -x < span class = "m" > 2< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 44< / span > ms.
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 4< / span > < span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 4< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "" >
< span id = "id4" > < / span > < h3 > 观察方法入参< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h3 >
< div class = "highlight-shell notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add < span class = "s2" > " {params,returnObj}" < / span > -x < span class = "m" > 2< / span > -b
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 48< / span > ms.
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
null,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< blockquote >
< div > 对比前一个例子， （ ） ， （ ， ） < / div > < / blockquote >
< / div >
< div class = "section" id = "" >
< span id = "id5" > < / span > < h3 > 同时观察方法调用前和方法返回后< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h3 >
< div class = "highlight-shell notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add < span class = "s2" > " {params,returnObj}" < / span > -x < span class = "m" > 2< / span > -b -s
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 59< / span > ms.
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
null,
< span class = "o" > ]< / span >
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 4< / span > < span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 4< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< blockquote >
< div > 这里输出结果中，第一次输出的是方法调用前的观察表达式的结果，第二次输出的是方法返回后的表达式的结果< / div > < / blockquote >
< blockquote >
< div > 结果的顺序和命令中 < code class = "docutils literal notranslate" > < span class = "pre" > -s< / span > < span class = "pre" > -b< / span > < / code > 的顺序没有关系，只与事件本身的先后顺序有关< / div > < / blockquote >
< / div >
< div class = "section" id = "x" >
< span id = "x" > < / span > < h3 > 调整< code class = "docutils literal notranslate" > < span class = "pre" > -x< / span > < / code > 的值，观察具体的方法参数值< a class = "headerlink" href = "#x" title = "永久链接至标题" > ¶< / a > < / h3 >
< div class = "highlight-shell notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add < span class = "s2" > " {params,returnObj}" < / span > -x < span class = "m" > 3< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 59< / span > ms.
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@ArrayList< span class = "o" > [< / span >
@String< span class = "o" > [< / span > a< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > b< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > c< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > d< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span >
@String< span class = "o" > [< / span > c< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > d< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 4< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< blockquote >
< div > < code class = "docutils literal notranslate" > < span class = "pre" > -x< / span > < / code > 表示遍历深度，可以调整来打印具体的参数和结果内容。< / div > < / blockquote >
< / div >
< div class = "section" id = "" >
< span id = "id6" > < / span > < h3 > 条件表达式的例子< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h3 >
< div class = "highlight-shell notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.alibaba.sample.petstore.biz.impl.UserManagerImpl testAdd < span class = "s2" > " {params, returnObj}" < / span > < span class = "s2" > " params[0].equals(' aaa' )" < / span > -x < span class = "m" > 2< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 29< / span > ms.
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@String< span class = "o" > [< / span > aaa< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > bbb< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 6< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< blockquote >
< div > 只有满足条件的调用，才会有响应。< / div > < / blockquote >
< / div >
< div class = "section" id = "" >
< span id = "id7" > < / span > < h3 > 观察异常信息的例子< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h3 >
< div class = "highlight-shell notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.alibaba.sample.petstore.biz.impl.UserManagerImpl testAdd < span class = "s2" > " {params, throwExp}" < / span > -e -x < span class = "m" > 2< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 29< / span > ms.
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@String< span class = "o" > [< / span > aaa< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > bbb< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
java.lang.NullPointerException
at com.alibaba.sample.petstore.biz.impl.UserManagerImpl.testAdd< span class = "o" > (< / span > UserManagerImpl.java:75< span class = "o" > )< / span >
at com.alibaba.sample.petstore.biz.impl.UserManagerImpl.register< span class = "o" > (< / span > UserManagerImpl.java:60< span class = "o" > )< / span >
at com.alibaba.sample.petstore.web.user.module.action.RegisterAction.doRegister< span class = "o" > (< / span > RegisterAction.java:45< span class = "o" > )< / span >
at com.alibaba.sample.petstore.web.user.module.action.RegisterAction< span class = "nv" > $$< / span > FastClassByCGLIB< span class = "nv" > $$< / span > ad5428f1.invoke< span class = "o" > (< / span > < generated> < span class = "o" > )< / span >
at net.sf.cglib.reflect.FastMethod.invoke< span class = "o" > (< / span > FastMethod.java:53< span class = "o" > )< / span >
at com.alibaba.citrus.service.moduleloader.impl.adapter.MethodInvoker.invoke< span class = "o" > (< / span > MethodInvoker.java:70< span class = "o" > )< / span >
at com.alibaba.citrus.service.moduleloader.impl.adapter.AbstractModuleEventAdapter.executeAndReturn< span class = "o" > (< / span > AbstractModuleEventAdapter.java:100< span class = "o" > )< / span >
at com.alibaba.citrus.service.moduleloader.impl.adapter.AbstractModuleEventAdapter.execute< span class = "o" > (< / span > AbstractModuleEventAdapter.java:58< span class = "o" > )< / span >
at com.alibaba.citrus.turbine.pipeline.valve.PerformActionValve.invoke< span class = "o" > (< / span > PerformActionValve.java:63< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invoke< span class = "o" > (< / span > PipelineImpl.java:210< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.valve.ChooseValve.invoke< span class = "o" > (< / span > ChooseValve.java:98< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invoke< span class = "o" > (< / span > PipelineImpl.java:210< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.valve.LoopValve.invokeBody< span class = "o" > (< / span > LoopValve.java:105< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.valve.LoopValve.invoke< span class = "o" > (< / span > LoopValve.java:83< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.turbine.pipeline.valve.PageAuthorizationValve.invoke< span class = "o" > (< / span > PageAuthorizationValve.java:105< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.turbine.pipeline.valve.CheckCsrfTokenValve.invoke< span class = "o" > (< / span > CheckCsrfTokenValve.java:123< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.turbine.pipeline.valve.AnalyzeURLValve.invoke< span class = "o" > (< / span > AnalyzeURLValve.java:126< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.turbine.pipeline.valve.SetLoggingContextValve.invoke< span class = "o" > (< / span > SetLoggingContextValve.java:66< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.turbine.pipeline.valve.PrepareForTurbineValve.invoke< span class = "o" > (< / span > PrepareForTurbineValve.java:52< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invokeNext< span class = "o" > (< / span > PipelineImpl.java:157< span class = "o" > )< / span >
at com.alibaba.citrus.service.pipeline.impl.PipelineImpl< span class = "nv" > $PipelineContextImpl< / span > .invoke< span class = "o" > (< / span > PipelineImpl.java:210< span class = "o" > )< / span >
at com.alibaba.citrus.webx.impl.WebxControllerImpl.service< span class = "o" > (< / span > WebxControllerImpl.java:43< span class = "o" > )< / span >
at com.alibaba.citrus.webx.impl.WebxRootControllerImpl.handleRequest< span class = "o" > (< / span > WebxRootControllerImpl.java:53< span class = "o" > )< / span >
at com.alibaba.citrus.webx.support.AbstractWebxRootController.service< span class = "o" > (< / span > AbstractWebxRootController.java:165< span class = "o" > )< / span >
at com.alibaba.citrus.webx.servlet.WebxFrameworkFilter.doFilter< span class = "o" > (< / span > WebxFrameworkFilter.java:152< span class = "o" > )< / span >
at com.alibaba.citrus.webx.servlet.FilterBean.doFilter< span class = "o" > (< / span > FilterBean.java:148< span class = "o" > )< / span >
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter< span class = "o" > (< / span > ApplicationFilterChain.java:241< span class = "o" > )< / span >
at org.apache.catalina.core.ApplicationFilterChain.doFilter< span class = "o" > (< / span > ApplicationFilterChain.java:208< span class = "o" > )< / span >
at com.alibaba.citrus.webx.servlet.SetLoggingContextFilter.doFilter< span class = "o" > (< / span > SetLoggingContextFilter.java:61< span class = "o" > )< / span >
at com.alibaba.citrus.webx.servlet.FilterBean.doFilter< span class = "o" > (< / span > FilterBean.java:148< span class = "o" > )< / span >
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter< span class = "o" > (< / span > ApplicationFilterChain.java:241< span class = "o" > )< / span >
at org.apache.catalina.core.ApplicationFilterChain.doFilter< span class = "o" > (< / span > ApplicationFilterChain.java:208< span class = "o" > )< / span >
at org.apache.catalina.core.StandardWrapperValve.invoke< span class = "o" > (< / span > StandardWrapperValve.java:220< span class = "o" > )< / span >
at org.apache.catalina.core.StandardContextValve.invoke< span class = "o" > (< / span > StandardContextValve.java:122< span class = "o" > )< / span >
at com.taobao.tomcat.valves.ContextLoadFilterValve.invoke< span class = "o" > (< / span > ContextLoadFilterValve.java:152< span class = "o" > )< / span >
at org.apache.catalina.core.StandardHostValve.invoke< span class = "o" > (< / span > StandardHostValve.java:170< span class = "o" > )< / span >
at org.apache.catalina.valves.ErrorReportValve.invoke< span class = "o" > (< / span > ErrorReportValve.java:103< span class = "o" > )< / span >
at org.apache.catalina.core.StandardEngineValve.invoke< span class = "o" > (< / span > StandardEngineValve.java:116< span class = "o" > )< / span >
at org.apache.catalina.connector.CoyoteAdapter.service< span class = "o" > (< / span > CoyoteAdapter.java:429< span class = "o" > )< / span >
at org.apache.coyote.http11.AbstractHttp11Processor.process< span class = "o" > (< / span > AbstractHttp11Processor.java:1085< span class = "o" > )< / span >
at org.apache.coyote.AbstractProtocol< span class = "nv" > $AbstractConnectionHandler< / span > .process< span class = "o" > (< / span > AbstractProtocol.java:625< span class = "o" > )< / span >
at org.apache.tomcat.util.net.NioEndpoint< span class = "nv" > $SocketProcessor< / span > .doRun< span class = "o" > (< / span > NioEndpoint.java:1760< span class = "o" > )< / span >
at org.apache.tomcat.util.net.NioEndpoint< span class = "nv" > $SocketProcessor< / span > .run< span class = "o" > (< / span > NioEndpoint.java:1719< span class = "o" > )< / span >
at java.util.concurrent.ThreadPoolExecutor.runWorker< span class = "o" > (< / span > ThreadPoolExecutor.java:1142< span class = "o" > )< / span >
at java.util.concurrent.ThreadPoolExecutor< span class = "nv" > $Worker< / span > .run< span class = "o" > (< / span > ThreadPoolExecutor.java:617< span class = "o" > )< / span >
at org.apache.tomcat.util.threads.TaskThread< span class = "nv" > $WrappingRunnable< / span > .run< span class = "o" > (< / span > TaskThread.java:61< span class = "o" > )< / span >
at java.lang.Thread.run< span class = "o" > (< / span > Thread.java:745< span class = "o" > )< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< blockquote >
< div > express中， < code class = "docutils literal notranslate" > < span class = "pre" > throwExp< / span > < / code > < / div > < / blockquote >
< / div >
< div class = "section" id = "" >
< span id = "id8" > < / span > < h3 > 按照耗时进行过滤< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h3 >
< div class = "highlight-shell notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.alibaba.sample.petstore.web.store.module.screen.ItemList add < span class = "s2" > " {params,returnObj}" < / span > < span class = "c1" > #cost> 200 -x 3 < / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 59< / span > ms.
@ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@ArrayList< span class = "o" > [< / span >
@String< span class = "o" > [< / span > a< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > b< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > c< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > d< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span >
@String< span class = "o" > [< / span > c< span class = "o" > ]< / span > ,
@String< span class = "o" > [< / span > d< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 4< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< blockquote >
< div > #cost> 200(单位是< code class = "docutils literal notranslate" > < span class = "pre" > ms< / span > < / code > )表示只有当耗时大于200ms时才会输出， < / div > < / blockquote >
< / div >
< div class = "section" id = "" >
< span id = "id9" > < / span > < h3 > 观察当前对象中的全局属性< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h3 >
< p > 如果想查看方法运行前后，当前对象中的全局属性，可以使用< code class = "docutils literal notranslate" > < span class = "pre" > target< / span > < / code > 关键字，代表当前对象< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.taobao.container.web.arthas.rest.MyAppsController myFavoriteApps ' target'
Press Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 128 ms.
ts=2017-10-31 18:45:55;result=@MyAppsController[
myFavAppsMapper=@$Proxy131[org.apache.ibatis.binding.MapperProxy@563e97f3],
getAppNameAndIdByEmpId=@$Proxy135[HardCodedTarget(type=GetAppNameAndIdByEmpId, url=http://hello.com)],
enableWebConsoleAppsMapper=@$Proxy132[org.apache.ibatis.binding.MapperProxy@7d51e4a8],
]
< / pre > < / div >
< / div >
< p > 然后使用< code class = "docutils literal notranslate" > < span class = "pre" > target.field_name< / span > < / code > 访问当前对象的某个全局属性< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch com.taobao.container.web.arthas.rest.MyAppsController myFavoriteApps ' target.myFavAppsMapper'
Press Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 126 ms.
ts=2017-10-31 18:46:17;result=@$Proxy131[
m1=@Method[public boolean java.lang.Object.equals(java.lang.Object)],
m2=@Method[public java.lang.String java.lang.Object.toString()],
m5=@Method[public abstract java.util.List com.taobao.container.dal.arthas.mapper.MyFavAppsMapper.listFavApps(java.util.Map)],
m3=@Method[public abstract int com.taobao.container.dal.arthas.mapper.MyFavAppsMapper.delete(java.lang.String,java.lang.String,java.lang.String)],
m4=@Method[public abstract long com.taobao.container.dal.arthas.mapper.MyFavAppsMapper.insert(com.taobao.container.dal.arthas.domain.MyFavAppsDO)],
m0=@Method[public native int java.lang.Object.hashCode()],
]
< / pre > < / div >
< / div >
< / div >
< / div >
< / div >
< / div >
< / div >
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< div class = "rst-footer-buttons" role = "navigation" aria-label = "footer navigation" >
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