Java monitoring method running time/efficiency method, java monitoring

Java monitoring method running time/efficiency method, java monitoring

Preface:

　　I am writing a small project this week. Although it is small, it only calls the external interface. After the interface is called, the data returned by the non-stop loop interface (which has been converted to JSONArray) is executed, and then the value is determined, the key to doing different processing is that the data volume is still relatively large. This process has not been launched yet, and the test has not yet started. I want to first check the running efficiency of each method, the provincial data is too big for the project to be suspended (there are many loop judgments, and sometimes there are two for nested loops), that is, purely time-based monitoring without monitoring of memory and cpu.

The Spring AOP technology is mainly used to perform cross-cutting processing on the method to be counted. The timer starts before the method is executed, and the timer stops after the method is executed. the time consumed by this method is obtained.

Steps:

• First, write your own Interceptor class to implement the MethodInterceptor class, and use it to cut in the method and run the timing code.
• Spring aop xml configuration, configuration of methods to be monitored and cut-in methods (custom Interceptor)

Java code:

Package com. cplatform. tencent. task; import java. util. hashMap; import java. util. map; import org. aopalliance. intercept. methodInterceptor; import org. aopalliance. intercept. methodInvocation; import org. apache. commons. lang. time. stopWatch;/*** method run time test * @ author liuyt * @ date 2014-11-16 3:39:08 * bolgs http://www.cnblogs.com/liuyitian/ */public class MethodTimeActive implements MethodInterceptor {/*** custom map set, key: method name, value: [0: Running Times, 1: Total time] */public static Map <String, Long []> methodTest = new HashMap <String, long []> ();/*** intercept the method to be executed */public Object invoke (MethodInvocation invocation) throws Throwable {// create a timer StopWatch watch = new StopWatch (); // The timer starts watching. start (); // execution method Object object = invocation. proceed (); // The timer stops watching. stop (); // method name String methodName = invocation. getMethod (). getName (); // get the timer time Long time = watch. getTime (); if (methodTest. containsKey (methodName) {Long [] x = methodTest. get (methodName); x [0] ++; x [1] + = time;} else {methodTest. put (methodName, new Long [] {1L, time}) ;}return object ;}}

XML configuration:

<! -- Logging the time required for methods in a class aop --> <aop: config> <! -- Spring 2.0 can use the AspectJ syntax to define Pointcut. Here, you can customize the package of the method to intercept --> <aop: advisor id = "methodTimeLog" advice-ref = "methodTimeAdvice" pointcut = "execution (* com. cplatform. tencent. sync .. *. *(..)) "/> <aop: advisor id =" methodTimeLog2 "advice-ref =" methodTimeAdvice "pointcut =" execution (* com. cplatform. tencent. utils .. *. *(..)) "/> </aop: config> <bean id =" methodTimeAdvice "class =" com. cplatform. tencent. task. methodTimeActive "/>

When using the Aspect-Oriented AOP technology, do not ignore the following configurations in the XML Configuration:

TEST:

Package test; import java. util. map; import java. util. set; import org. junit. after; import org. junit. test; import org. junit. runner. runWith; import org. springframework. beans. factory. annotation. autowired; import org. springframework. test. context. activeProfiles; import org. springframework. test. context. contextConfiguration; import org. springframework. test. context. junit4.SpringJUnit4ClassRunner; import com. cplatform. tencent. sync. persistenceTicketService; import com. cplatform. tencent. task. methodTimeActive; import com. cplatform. tencent. utils. appConfig; @ RunWith (SpringJUnit4ClassRunner. class) @ ContextConfiguration (locations = {"classpath: spring-configuration /*. xml "}) @ ActiveProfiles (" production ") public class CopyOfDBTest {@ Autowired private AppConfig appConfig; // This Is What I used in my project to ignore @ Autowired private PersistenceTicketService persistenceTicketService; // Test a method. This method internally calls many business processing methods @ Test public void testInsertOrUpdate () {persistenceTicketService. insertOrUpdate (appConfig. getTicketCityIds (), appConfig. getAgentId ();} // After the test method is run, retrieve the defined Map set and obtain the data @ After public void testMethodActive () {Map <String, long []> map = MethodTimeActive. methodTest; Set <String> set = map. keySet (); Long [] x = null; for (String s: set) {x = map. get (s); System. out. println (s + ":" + x [0] + "Times," + x [1] + "millisecond ");}}}

The above uses Spring and junit to test the WEB method,For more information, see:SpringJunit4 for unit testing

Console output:

 In fact, it is not difficult. You may also share a clown. You are welcome to make a brick.

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