• java项目运行时信息获取

    大体思路如下，想要获取启动时处理器数量、jvm 相关信息，操作系统信息、运行机器信息

    运行机器信息

    1. import org.slf4j.Logger;
    2. import org.slf4j.LoggerFactory;
    3.  
    4. import java.lang.invoke.MethodHandles;
    5.  
    6. /**
    7.  * 机器工具类
    8.  */
    9. public abstract class ServerUtils {
    10.  
    11.     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
    12.  
    13.     /**
    14.      * 获取可用处理器数量
    15.      *
    16.      * @return
    17.      */
    18.     public static int getAvailableProcessors() {
    19.         return Runtime.getRuntime().availableProcessors();
    20.     }
    21.  
    22.     public static void printAvailableProcessors() {
    23.         logger.info("processors={}", Runtime.getRuntime().availableProcessors());
    24.     }
    25. }

    系统信息

    1. import org.slf4j.Logger;
    2. import org.slf4j.LoggerFactory;
    3.  
    4. import java.lang.invoke.MethodHandles;
    5.  
    6. /**
    7.  * 系统信息工具类
    8.  *
    9.  * @author Rike
    10.  * @date 2023/6/28
    11.  */
    12. public abstract class SystemUtils {
    13.  
    14.     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
    15.  
    16.     public static String getOsName() {
    17.         return System.getProperty("os.name");
    18.     }
    19.  
    20.     public static void printOsName() {
    21.         logger.info("os.name={}", System.getProperty("os.name"));
    22.     }
    23.  
    24.     public static boolean isWindows() {
    25.         return getOsName().startsWith("Windows");
    26.     }
    27.  
    28.     public static boolean isLinux() {
    29.         return getOsName().startsWith("Linux");
    30.     }
    31.  
    32.     public static boolean isWindows(String osName) {
    33.         return osName.startsWith("Windows");
    34.     }
    35.  
    36.     public static boolean isLinux(String osName) {
    37.         return osName.startsWith("Linux");
    38.     }
    39. }

    通过 System.getProperty() 实现。

    jvm 信息

    1. import org.slf4j.Logger;
    2. import org.slf4j.LoggerFactory;
    3.  
    4. import java.lang.invoke.MethodHandles;
    5. import java.lang.management.ManagementFactory;
    6. import java.lang.management.RuntimeMXBean;
    7.  
    8. /**
    9.  * jvm 信息工具类
    10.  */
    11. public abstract class JvmUtils {
    12.  
    13.     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
    14.  
    15.     /**
    16.      * 打印 jvm 信息
    17.      */
    18.     public static void printJvmInfo() {
    19.         RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
    20.         logger.info("jvm name={}", runtimeMXBean.getName());
    21.         logger.info("class={}", runtimeMXBean.getClass());
    22.         logger.info("java.class.path={}", runtimeMXBean.getClassPath());
    23.         logger.info("java.library.path={}", runtimeMXBean.getLibraryPath());
    24.         logger.info("bootClassPath={}", runtimeMXBean.getBootClassPath());
    25.  
    26.         logger.info("java.vm.vendor={}", runtimeMXBean.getVmVendor());
    27.         logger.info("java.vm.name={}", runtimeMXBean.getVmName());
    28.         logger.info("java.vm.version={}", runtimeMXBean.getVmVersion());
    29.  
    30.         logger.info("java.vm.specification.name={}", runtimeMXBean.getSpecName());
    31.         logger.info("java.vm.specification.vendor={}", runtimeMXBean.getSpecVendor());
    32.         logger.info("java.vm.specification.version={}", runtimeMXBean.getSpecVersion());
    33.  
    34.         logger.info("java.version={}", System.getProperty("java.version"));
    35.         logger.info("java.runtime.version={}", System.getProperty("java.runtime.version"));
    36.         logger.info("java.class.version={}", System.getProperty("java.class.version"));
    37.  
    38.         logger.info("inputArguments={}", runtimeMXBean.getInputArguments());
    39.         logger.info("managementSpecVersion={}", runtimeMXBean.getManagementSpecVersion());
    40.         logger.info("startTime={}", runtimeMXBean.getStartTime());
    41.         logger.info("uptime={}", runtimeMXBean.getUptime());
    42.  
    43.         /*logger.info("+++++++++++++++++++++++++++++++++++++++");
    44.         runtimeMXBean.getSystemProperties().entrySet().parallelStream().forEach(entry -> {
    45.             System.out.println(entry.getKey() + "=" + entry.getValue());
    46.         });
    47.         logger.info("+++++++++++++++++++++++++++++++++++++++");*/
    48.     }
    49. }

    通过 ManagementFactory 获取 RuntimeMXBean 对象获取相关信息。

    spring 环境信息

    1. import org.slf4j.Logger;
    2. import org.slf4j.LoggerFactory;
    3. import org.springframework.beans.BeansException;
    4. import org.springframework.context.ApplicationContext;
    5. import org.springframework.context.ApplicationContextAware;
    6. import org.springframework.context.ConfigurableApplicationContext;
    7. import org.springframework.core.env.ConfigurableEnvironment;
    8. import org.springframework.core.env.EnumerablePropertySource;
    9. import org.springframework.core.env.PropertySource;
    10. import org.springframework.stereotype.Component;
    11.  
    12. import java.lang.invoke.MethodHandles;
    13. import java.util.List;
    14. import java.util.Map;
    15. import java.util.stream.Collectors;
    16.  
    17. /**
    18.  * spring Environment 信息获取工具类
    19.  */
    20. @Component
    21. public class SpringEnvironmentUtils implements ApplicationContextAware {
    22.  
    23.     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
    24.  
    25.     private static ConfigurableEnvironment environment = null;
    26.  
    27.     @Override
    28.     public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    29.         environment = (ConfigurableEnvironment) applicationContext.getBean(ConfigurableApplicationContext.ENVIRONMENT_BEAN_NAME);
    30.     }
    31.  
    32.     public static void printPropertyValue(String property) {
    33.         logger.info("[{}]={}", property, environment.getProperty(property));
    34.     }
    35.  
    36.     public static String getPropertyValue(String property) {
    37.         return environment.getProperty(property);
    38.     }
    39.  
    40.     /**
    41.      * 打印所有的 Environment 信息
    42.      */
    43.     public static void printAllEnvironmentInfo() {
    44.         // printSystemEnvironment();
    45.         // printSystemProperties();
    46.         printPropertySources();
    47.         printProfiles();
    48.     }
    49.  
    50.     public static void printSystemEnvironment() {
    51.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    52.         logger.info("print system environment begin");
    53.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    54.         environment.getSystemEnvironment().entrySet().parallelStream().forEach(entry -> {
    55.             // System.out.println(entry.getKey() + "=" + entry.getValue());
    56.             logger.info("{}={}", entry.getKey(), entry.getValue());
    57.         });
    58.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    59.         logger.info("print system environment end");
    60.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    61.  
    62.         Map map = System.getenv();
    63.         map.entrySet().stream().forEach(entry -> {
    64.             // System.out.println(entry.getKey() + "=" + entry.getValue());
    65.             logger.info("{}={}", entry.getKey(), entry.getValue());
    66.         });
    67.     }
    68.  
    69.     public static void printSystemProperties() {
    70.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    71.         logger.info("print system properties begin");
    72.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    73.         environment.getSystemProperties().entrySet().parallelStream().forEach(entry -> {
    74.             // System.out.println(entry.getKey() + "=" + entry.getValue());
    75.             logger.info("{}={}", entry.getKey(), entry.getValue());
    76.         });
    77.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    78.         logger.info("print system properties end");
    79.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    80.     }
    81.  
    82.     public static void printPropertySources() {
    83.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    84.         logger.info("print property sources begin");
    85.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    86.  
    87.         // 筛选继承 EnumerablePropertySource 的类和实现 Map 的类
    88.         List> list = environment.getPropertySources().stream().filter(ps -> (ps instanceof EnumerablePropertySource && ps.getSource() instanceof Map)).collect(Collectors.toList());
    89.  
    90.         list.stream().forEach(ps -> {
    91.  
    92.             String name = ps.getName();
    93.             logger.info("[{}] include property and value begin", name);
    94.             Map source = (Map) ps.getSource();
    95.             StringBuffer stringBuffer = new StringBuffer();
    96.             int size = source.entrySet().size();
    97.             // 记录当前下标
    98.             int index = -1;
    99.             for (Object entry : source.entrySet()) {
    100.                 index++;
    101.                 Map.Entry temp = (Map.Entry) entry;
    102.                 // System.out.println(temp.getKey() + "="+ temp.getValue());
    103.                 // logger.info("{}={}", temp.getKey(), temp.getValue());
    104.                 // 将参数进行拼接方便日志打印
    105.                 stringBuffer.append(temp.getKey()).append("=").append(temp.getValue());
    106.                 /**
    107.                  * 换行符打印的情况
    108.                  *
    109.                  * 总数量大于1
    110.                  *
    111.                  * 下标小于总数减1
    112.                  *
    113.                  */
    114.                 if (size > 1 && index < size -1) {
    115.                     stringBuffer.append("\n");
    116.                 }
    117.             }
    118.             // 拼接的字符串不为空时打印
    119.             if (stringBuffer.length() > 0) {
    120.                 logger.info("{}", stringBuffer);
    121.             }
    122.             logger.info("[{}] include property and value end", name);
    123.  
    124.         });
    125.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    126.         logger.info("print property sources end");
    127.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    128.     }
    129.  
    130.     public static void printProfiles() {
    131.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    132.         logger.info("print profiles begin");
    133.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    134.         String[] defaultProfiles = environment.getDefaultProfiles();
    135.         logger.info("defaultProfiles={}", defaultProfiles);
    136.         String[] activeProfiles = environment.getActiveProfiles();
    137.         logger.info("activeProfiles={}", activeProfiles);
    138.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    139.         logger.info("print profiles end");
    140.         logger.info("+++++++++++++++++++++++++++++++++++++++");
    141.     }
    142. }

    借助于 ApplicationContext 获取 ConfigurableEnvironment 对象，进而获取 System.getProperty() 和 System.getenv() 相关信息。

    整合

    1. import org.springframework.beans.factory.InitializingBean;
    2. import org.springframework.core.Ordered;
    3. import org.springframework.stereotype.Component;
    4.  
    5. /**
    6.  * 启动信息
    7.  */
    8. @Component
    9. public class StartInfo implements InitializingBean, Ordered {
    10.  
    11.     @Override
    12.     public void afterPropertiesSet() throws Exception {
    13.         SpringEnvironmentUtils.printPropertyValue("spring.cloud.nacos.server-addr");
    14.         ServerUtils.printAvailableProcessors();
    15.         SystemUtils.printOsName();
    16.         JvmUtils.printJvmInfo();
    17.         SpringEnvironmentUtils.printAllEnvironmentInfo();
    18.     }
    19.  
    20.     @Override
    21.     public int getOrder() {
    22.         return LOWEST_PRECEDENCE;
    23.     }
    24. }

    创建一个类实现 InitializingBean 接口，添加 @Component 注解，在 spring ioc 容器启动时执行其中的逻辑，对代码无侵入性，无需修改其他代码即可实现最终的功能。

    可以参照 zookeeper 中源码

    1. <dependency>
    2. 	<groupId>org.apache.zookeepergroupId>
    3. 	<artifactId>zookeeperartifactId>
    4. 	<version>3.9.1version>
    5. dependency>

    1. package org.apache.zookeeper;
    2.  
    3. import java.net.InetAddress;
    4. import java.net.UnknownHostException;
    5. import java.util.ArrayList;
    6. import java.util.List;
    7. import org.slf4j.Logger;
    8.  
    9. /**
    10.  * Provide insight into the runtime environment.
    11.  *
    12.  */
    13. public class Environment {
    14.  
    15.     public static final String JAAS_CONF_KEY = "java.security.auth.login.config";
    16.  
    17.     public static class Entry {
    18.  
    19.         private String k;
    20.         private String v;
    21.         public Entry(String k, String v) {
    22.             this.k = k;
    23.             this.v = v;
    24.         }
    25.         public String getKey() {
    26.             return k;
    27.         }
    28.         public String getValue() {
    29.             return v;
    30.         }
    31.  
    32.         @Override
    33.         public String toString() {
    34.             return k + "=" + v;
    35.         }
    36.  
    37.     }
    38.  
    39.     private static void put(List l, String k, String v) {
    40.         l.add(new Entry(k, v));
    41.     }
    42.  
    43.     public static List list() {
    44.         List l = new ArrayList<>();
    45.         put(l, "zookeeper.version", Version.getFullVersion());
    46.  
    47.         try {
    48.             put(l, "host.name", InetAddress.getLocalHost().getCanonicalHostName());
    49.         } catch (UnknownHostException e) {
    50.             put(l, "host.name", "");
    51.         }
    52.  
    53.         put(l, "java.version", System.getProperty("java.version", ""));
    54.         put(l, "java.vendor", System.getProperty("java.vendor", ""));
    55.         put(l, "java.home", System.getProperty("java.home", ""));
    56.         put(l, "java.class.path", System.getProperty("java.class.path", ""));
    57.         put(l, "java.library.path", System.getProperty("java.library.path", ""));
    58.         put(l, "java.io.tmpdir", System.getProperty("java.io.tmpdir", ""));
    59.         put(l, "java.compiler", System.getProperty("java.compiler", ""));
    60.         put(l, "os.name", System.getProperty("os.name", ""));
    61.         put(l, "os.arch", System.getProperty("os.arch", ""));
    62.         put(l, "os.version", System.getProperty("os.version", ""));
    63.         put(l, "user.name", System.getProperty("user.name", ""));
    64.         put(l, "user.home", System.getProperty("user.home", ""));
    65.         put(l, "user.dir", System.getProperty("user.dir", ""));
    66.  
    67.         // Get memory information.
    68.         Runtime runtime = Runtime.getRuntime();
    69.         int mb = 1024 * 1024;
    70.         put(l, "os.memory.free", runtime.freeMemory() / mb + "MB");
    71.         put(l, "os.memory.max", runtime.maxMemory() / mb + "MB");
    72.         put(l, "os.memory.total", runtime.totalMemory() / mb + "MB");
    73.  
    74.         return l;
    75.     }
    76.  
    77.     public static void logEnv(String msg, Logger log) {
    78.         List env = Environment.list();
    79.         for (Entry e : env) {
    80.             log.info(msg + e.toString());
    81.         }
    82.     }
    83.  
    84. }

    参考链接

    https://blog.csdn.net/qq742143797/article/details/113553660

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  • 原文地址：https://blog.csdn.net/zlpzlpzyd/article/details/133967701