尊重作者 原文鏈接:http://blog.csdn.net/lk_blog/article/details/13760999
JavaMelody能夠在運行環境監測Java或Java EE應用程序服務器。並以圖表的形式顯示:Java內存和Java CPU使用情況,用戶Session數量,JDBC連接數,和http請求、sql請求、jsp頁面與業務接口方法(EJB3、Spring、Guice)的執行數量,平均執行時間,錯誤百分比等。圖表可以按天,周,月,年或自定義時間段查看。
監控效果圖見本文結尾部分.
配置方式:
1.下載地址:http://code.google.com/p/javamelody/downloads/list
目前爲止最新版本是1.47.0,下載地址:http://code.google.com/p/javamelody/downloads/detail?name=javamelody-1.47.0.zip&can=2&q=
2.下載後可以解壓找到javamelody-1.47.0.jar和jrobin-1.5.9.1.jar,引用到項目中.
3.在web.xml中配置filter:
<filter>
<filter-name>monitoring</filter-name>
<filter-class>net.bull.javamelody.MonitoringFilter</filter-class>
<init-param>
<param-name>log</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>monitoring</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>net.bull.javamelody.SessionListener</listener-class>
</listener>
4.重啓項目:打開鏈接:http://:/projectname/monitoring
例如:http://127.0.0.1:8080/myproj/monitoring
5.javamelody和struts2集成時配置:
<package name="base" namespace="/" extends="struts-default">
<result-types>
<result-type name="json" class="org.apache.struts2.json.JSONResult" />
</result-types>
<interceptors>
<!-- javamelody -->
<interceptor name="monitoring" class="net.bull.javamelody.StrutsInterceptor" />
<interceptor-stack name="myStack">
<interceptor-ref name="monitoring" />
<!--
struts默認的攔截器
-->
<interceptor-ref name="defaultStack" />
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="myStack" />
其他struts配置文件繼承base,如下所示:
<package name="example" namespace="/" extends="base">
<action name="student_*" class="studentAction" method="{1}">
<result name="input">/pub_error.jsp</result>
</action>
</package>
6.javamelody與Spring集成:
spring的配置文件中配置:
<bean id= "facadeMonitoringAdvisor" class="net.bull.javamelody.MonitoringSpringAdvisor" >
<property name ="pointcut" >
<bean class="org.springframework.aop.support.JdkRegexpMethodPointcut" >
<property name ="pattern" value="com.proj.*.service.*" /><!--正則表達式-->
</bean>
</property>
</bean>
然後配置:
方式一,web.xml中加入如下配置:
<context-param>
<param-name> contextConfigLocation</param-name>
<param-value>
classpath:applicationContext*.xml<!--Spring配置文件-->
classpath:net/bull/javamelody/monitoring-spring.xml<!--和spring集成時添加-->
</param-value>
</context-param>
方式二,在spring.xml中加入如下配置:
<import resource="classpath:net/bull/javamelody/monitoring-spring.xml" />
7.如果你的所有spring管理的bean都實現了接口,用步驟6中的配置一切OK,但如果有些bean沒有實現接口,使用步驟6中的配置將會出錯.
則將步驟6中的配置改爲(這樣將使用cglib代理):
spring配置文件中配置:
<bean id= "facadeMonitoringAdvisor" class="net.bull.javamelody.MonitoringSpringAdvisor" >
<property name ="pointcut" >
<bean class="org.springframework.aop.support.JdkRegexpMethodPointcut" >
<property name ="pattern" value="com.proj.*.service.*" /><!--正則表達式-->
</bean>
</property>
</bean>
方式一,web.xml中加入如下配置:
<context-param>
<param-name> contextConfigLocation</param-name>
<param-value>
classpath:applicationContext*.xml<!--Spring配置文件-->
classpath:net/bull/javamelody/monitoring-spring-aspectj.xml<!--和spring集成時添加-->
</param-value>
</context-param>
方式二,在spring.xml中加入如下配置:
<import resource="classpath:net/bull/javamelody/monitoring-spring-aspectj.xml" />
8.在項目中經常這樣得到泛型類:
private Class<T> entityClass = (Class<T>) ((ParameterizedType) getClass()
.getGenericSuperclass()).getActualTypeArguments()[0];
使用步驟7配置的cglib代理後會以上代碼會出錯,可以改爲下面這種方式得到泛型類:
private Class<T> entityClass = (Class<T>) getSuperClassGenricType(this
.getClass(), 0);
public static Class<?> getSuperClassGenricType(Class<?> clazz, int index)
throws IndexOutOfBoundsException {
Type genType = clazz.getGenericSuperclass();
if (!(genType instanceof ParameterizedType)) {
return Object.class;
}
Type[] params = ((ParameterizedType) genType).getActualTypeArguments();
if (index >= params.length || index < 0) {
return Object.class;
}
if (!(params[index] instanceof Class<?>)) {
return Object.class;
}
return (Class<?>) params[index];
}
9.javamelody緩存文件的清除:默認路徑一般在tomcat_home/temp/javamelody中.
10.如果需要將結果導出爲pdf,只要在項目中引用iText.jar即可自動加上導出pdf的鏈接.
11.javamelody與Quartz集成需要配置:
<bean id="quartzScheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="exposeSchedulerInRepository" value="true" />
...
</bean>
12.javamelody中配置可選參數:
web.xml中配置,以日誌記錄爲例,如下配置將開啓info級別的日誌記錄:
<filter>
<filter-name>monitoring</filter-name>
<filter-class>net.bull.javamelody.MonitoringFilter</filter-class>
<init-param>
<param-name>log</param-name>
<param-value>true</param-value>
</init-param>
</filter>
其他可選參數:
system-actions-enabled:默認爲true,控制啓動或停止system actions garbage collector, http sessions, heap dump, memory histogram, process list, jndi tree, opened jdbc connections, database.
url-exclude-pattern:可配置正則表達式,排除一些url不監控.
http-transform-pattern,sql-transform-pattern,ejb-transform-pattern, spring-transform-pattern, guice-transform-pattern, error-transform-pattern, log-transform-pattern, job-transform-pattern, jsf-transform-pattern, struts-transform-pattern and jsp-transform-pattern :可配置正則表達式,用於合併javamelody統計數據.
storage-directory: 默認爲以javamelody,tomcat爲例,默認存儲路徑爲TOMCAT_HOME/temp/javamelody
monitoring-path:默認爲:/monitoring,可以更改爲其他地址,例如改爲/mo,則監控地址改爲:http://:/projectname/mo
no-database:默認false,配置爲true將不監控和數據有關的行爲.
disabled:默認false,配置爲true將不再監控.