本文整理了Java中java.lang.System.getProperties()方法的一些代码示例，展示了System.getProperties()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。System.getProperties()方法的具体详情如下：
包路径：java.lang.System
类名称：System
方法名：getProperties

System.getProperties介绍

[英]Returns the system properties. Note that this is not a copy, so that changes made to the returned Properties object will be reflected in subsequent calls to getProperty and getProperties.
[中]返回系统属性。请注意，这不是副本，因此对返回的Properties对象所做的更改将反映在对getProperty和getProperties的后续调用中。

代码示例

代码示例来源：origin: spring-projects/spring-framework

/**
 * Remove the system property that points to the web app root directory.
 * To be called on shutdown of the web application.
 * @param servletContext the servlet context of the web application
 * @see #setWebAppRootSystemProperty
 */
public static void removeWebAppRootSystemProperty(ServletContext servletContext) {
  Assert.notNull(servletContext, "ServletContext must not be null");
  String param = servletContext.getInitParameter(WEB_APP_ROOT_KEY_PARAM);
  String key = (param != null ? param : DEFAULT_WEB_APP_ROOT_KEY);
  System.getProperties().remove(key);
}

代码示例来源：origin: spring-projects/spring-framework

@Override
  public void afterPropertiesSet() throws Exception {
    System.getProperties();
  }
}

代码示例来源：origin: spring-projects/spring-framework

public Object makeInstance() {
    System.getProperties();
    return new Object();
  }
}

代码示例来源：origin: spring-projects/spring-framework

public static Object makeStaticInstance() {
  System.getProperties();
  return new Object();
}

代码示例来源：origin: google/guava

static boolean isAndroid() {
  return System.getProperties().getProperty("java.runtime.name").contains("Android");
 }
}

代码示例来源：origin: spring-projects/spring-framework

@After
public void tearDown() {
  System.getProperties().remove("foo");
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void testRecursiveFromSystemProperty() {
  System.setProperty("test.prop", "foo=${bar}");
  System.setProperty("bar", "baz");
  try {
    String resolved = SystemPropertyUtils.resolvePlaceholders("${test.prop}");
    assertEquals("foo=baz", resolved);
  }
  finally {
    System.getProperties().remove("test.prop");
    System.getProperties().remove("bar");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test(expected = IllegalArgumentException.class)
public void defaultProfileWithCircularPlaceholder() {
  System.setProperty(DEFAULT_PROFILES_PROPERTY_NAME, "${spring.profiles.default}");
  try {
    environment.getDefaultProfiles();
  }
  finally {
    System.getProperties().remove(DEFAULT_PROFILES_PROPERTY_NAME);
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void testSystemPropertyReplacement() {
  PropertyEditor editor = new ResourceEditor();
  System.setProperty("test.prop", "foo");
  try {
    editor.setAsText("${test.prop}-${bar}");
    Resource resolved = (Resource) editor.getValue();
    assertEquals("foo-${bar}", resolved.getFilename());
  }
  finally {
    System.getProperties().remove("test.prop");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void getActiveProfiles_fromSystemProperties() {
  System.setProperty(ACTIVE_PROFILES_PROPERTY_NAME, "foo");
  assertThat(Arrays.asList(environment.getActiveProfiles()), hasItem("foo"));
  System.getProperties().remove(ACTIVE_PROFILES_PROPERTY_NAME);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void testSystemPropertyReplacement() {
  PropertyEditor editor = new ResourceArrayPropertyEditor();
  System.setProperty("test.prop", "foo");
  try {
    editor.setAsText("${test.prop}-${bar}");
    Resource[] resources = (Resource[]) editor.getValue();
    assertEquals("foo-${bar}", resources[0].getFilename());
  }
  finally {
    System.getProperties().remove("test.prop");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void testReplaceFromSystemProperty() {
  System.setProperty("test.prop", "bar");
  try {
    String resolved = SystemPropertyUtils.resolvePlaceholders("${test.prop}");
    assertEquals("bar", resolved);
  }
  finally {
    System.getProperties().remove("test.prop");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void testReplaceFromSystemPropertyWithExpressionContainingDefault() {
  System.setProperty("test.prop", "bar");
  try {
    String resolved = SystemPropertyUtils.resolvePlaceholders("${test.prop:Y#{foo.bar}X}");
    assertEquals("bar", resolved);
  }
  finally {
    System.getProperties().remove("test.prop");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void testReplaceFromSystemPropertyWithDefault() {
  System.setProperty("test.prop", "bar");
  try {
    String resolved = SystemPropertyUtils.resolvePlaceholders("${test.prop:foo}");
    assertEquals("bar", resolved);
  }
  finally {
    System.getProperties().remove("test.prop");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void testReplaceFromSystemPropertyWithExpressionDefault() {
  System.setProperty("test.prop", "bar");
  try {
    String resolved = SystemPropertyUtils.resolvePlaceholders("${test.prop:#{foo.bar}}");
    assertEquals("bar", resolved);
  }
  finally {
    System.getProperties().remove("test.prop");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void getActiveProfiles_fromSystemProperties_withMulitpleProfiles_withWhitespace() {
  System.setProperty(ACTIVE_PROFILES_PROPERTY_NAME, " bar , baz "); // notice whitespace
  assertThat(Arrays.asList(environment.getActiveProfiles()), hasItems("bar", "baz"));
  System.getProperties().remove(ACTIVE_PROFILES_PROPERTY_NAME);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void getActiveProfiles_fromSystemProperties_withMultipleProfiles() {
  System.setProperty(ACTIVE_PROFILES_PROPERTY_NAME, "foo,bar");
  assertThat(Arrays.asList(environment.getActiveProfiles()), hasItems("foo", "bar"));
  System.getProperties().remove(ACTIVE_PROFILES_PROPERTY_NAME);
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void getActiveProfiles_systemPropertiesEmpty() {
  assertThat(environment.getActiveProfiles().length, is(0));
  System.setProperty(ACTIVE_PROFILES_PROPERTY_NAME, "");
  assertThat(environment.getActiveProfiles().length, is(0));
  System.getProperties().remove(ACTIVE_PROFILES_PROPERTY_NAME);
}

代码示例来源：origin: spring-projects/spring-framework

@Test(expected = IllegalArgumentException.class)
public void testStrictSystemPropertyReplacement() {
  PropertyEditor editor = new ResourceEditor(new DefaultResourceLoader(), new StandardEnvironment(), false);
  System.setProperty("test.prop", "foo");
  try {
    editor.setAsText("${test.prop}-${bar}");
    Resource resolved = (Resource) editor.getValue();
    assertEquals("foo-${bar}", resolved.getFilename());
  }
  finally {
    System.getProperties().remove("test.prop");
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void reservedDefaultProfile() {
  assertThat(environment.getDefaultProfiles(), equalTo(new String[]{RESERVED_DEFAULT_PROFILE_NAME}));
  System.setProperty(DEFAULT_PROFILES_PROPERTY_NAME, "d0");
  assertThat(environment.getDefaultProfiles(), equalTo(new String[]{"d0"}));
  environment.setDefaultProfiles("d1", "d2");
  assertThat(environment.getDefaultProfiles(), equalTo(new String[]{"d1","d2"}));
  System.getProperties().remove(DEFAULT_PROFILES_PROPERTY_NAME);
}