本文整理了Java中org.springframework.util.Assert.state()方法的一些代码示例，展示了Assert.state()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。Assert.state()方法的具体详情如下：
包路径：org.springframework.util.Assert
类名称：Assert
方法名：state

Assert.state介绍

[英]Assert a boolean expression, throwing IllegalStateExceptionif the test result is false.

Call #isTrue(boolean) if you wish to throw IllegalArgumentException on an assertion failure.

Assert.state(id == null);

[中]断言一个布尔表达式，如果测试结果为false，则抛出IllegalStateException。
如果希望在断言失败时抛出IllegalArgumentException，请调用#isTrue（布尔值）。

Assert.state(id == null);

代码示例

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

/**
 * Expose the singleton instance (for access through the 'early singleton' proxy).
 * @return the singleton instance that this FactoryBean holds
 * @throws IllegalStateException if the singleton instance is not initialized
 */
@Nullable
private T getSingletonInstance() throws IllegalStateException {
  Assert.state(this.initialized, "Singleton instance not initialized yet");
  return this.singletonInstance;
}

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

@Override
public void setApplicationContext(@Nullable ApplicationContext applicationContext) {
  this.applicationContext = applicationContext;
  if (applicationContext != null) {
      Assert.state(!applicationContext.containsBean("mvcContentNegotiationManager"),
          "The Java/XML config for Spring MVC and Spring WebFlux cannot both be enabled, " +
          "e.g. via @EnableWebMvc and @EnableWebFlux, in the same application.");
  }
}

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

@Override
@SuppressWarnings("unchecked")
protected RowMapper<T> newRowMapper(@Nullable Object[] parameters, @Nullable Map<?, ?> context) {
  if (this.rowMapper != null) {
    return this.rowMapper;
  }
  else {
    Assert.state(this.rowMapperClass != null, "No RowMapper set");
    return BeanUtils.instantiateClass(this.rowMapperClass);
  }
}

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

@Nullable
public String getIncludedUrl() {
  int count = this.includedUrls.size();
  Assert.state(count <= 1,
      () -> "More than 1 URL included - check getIncludedUrls instead: " + this.includedUrls);
  return (count == 1 ? this.includedUrls.get(0) : null);
}

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

@Override
@SuppressWarnings("unchecked")
public void write(EvaluationContext context, @Nullable Object target, String name, @Nullable Object newValue)
    throws AccessException {
  Assert.state(target instanceof Map, "Target must be a Map");
  Map<Object, Object> map = (Map<Object, Object>) target;
  map.put(name, newValue);
}

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

@Override
public Destination resolveDestinationName(@Nullable Session session, String destinationName, boolean pubSubDomain)
    throws JMSException {
  Assert.state(this.beanFactory != null, "BeanFactory is required");
  try {
    return this.beanFactory.getBean(destinationName, Destination.class);
  }
  catch (BeansException ex) {
    throw new DestinationResolutionException(
        "Failed to look up Destination bean with name '" + destinationName + "'", ex);
  }
}

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

@Override
@Nullable
public Theme getTheme(String themeName) {
  Assert.state(this.themeSource != null, "No ThemeSource available");
  return this.themeSource.getTheme(themeName);
}

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

@Override
public void doWork(Work work, long startTimeout, @Nullable ExecutionContext executionContext, @Nullable WorkListener workListener)
    throws WorkException {
  Assert.state(this.syncTaskExecutor != null, "No 'syncTaskExecutor' set");
  executeWork(this.syncTaskExecutor, work, startTimeout, false, executionContext, workListener);
}

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

private void execute(@Nullable DatabasePopulator populator) {
  Assert.state(this.dataSource != null, "DataSource must be set");
  if (this.enabled && populator != null) {
    DatabasePopulatorUtils.execute(populator, this.dataSource);
  }
}

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

/**
 * Access the given target object by resolving the given property name against the given target
 * environment.
 */
@Override
public TypedValue read(EvaluationContext context, @Nullable Object target, String name) throws AccessException {
  Assert.state(target instanceof Environment, "Target must be of type Environment");
  return new TypedValue(((Environment) target).getProperty(name));
}

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

@Override
public AsyncContext startAsync(ServletRequest request, @Nullable ServletResponse response) {
  Assert.state(this.asyncSupported, "Async not supported");
  this.asyncStarted = true;
  this.asyncContext = new MockAsyncContext(request, response);
  return this.asyncContext;
}

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

@Override
public TypedValue read(EvaluationContext context, @Nullable Object target, String name) throws AccessException {
  Assert.state(target instanceof BeanFactory, "Target must be of type BeanFactory");
  return new TypedValue(((BeanFactory) target).getBean(name));
}

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

@SuppressWarnings("unchecked")
@Nullable
public List<Object> getConstantValue() {
  Assert.state(this.constant != null, "No constant");
  return (List<Object>) this.constant.getValue();
}

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

@Override
@Nullable
public Object resolveArgument(MethodParameter parameter, @Nullable ModelAndViewContainer mavContainer,
    NativeWebRequest webRequest, @Nullable WebDataBinderFactory binderFactory) throws Exception {
  Assert.state(mavContainer != null, "ModelAndViewContainer is required for model exposure");
  return mavContainer.getModel();
}

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

/**
 * Return a CallableStatementCreator to perform an operation
 * with this parameters.
 * @param inParams parameters. May be {@code null}.
 */
protected CallableStatementCreator newCallableStatementCreator(@Nullable Map<String, ?> inParams) {
  Assert.state(this.callableStatementFactory != null, "No CallableStatementFactory available");
  return this.callableStatementFactory.newCallableStatementCreator(inParams);
}

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

@Override
@Nullable
public Theme getTheme(String themeName) {
  Assert.state(this.themeSource != null, "No ThemeSource available");
  return this.themeSource.getTheme(themeName);
}

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

@SuppressWarnings("unchecked")
@Nullable
public Map<Object, Object> getConstantValue() {
  Assert.state(this.constant != null, "No constant");
  return (Map<Object, Object>) this.constant.getValue();
}

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

/**
 * Return a PreparedStatementCreator to perform an operation
 * with the given parameters.
 * @param params the parameter array (may be {@code null})
 */
protected final PreparedStatementCreator newPreparedStatementCreator(@Nullable Object[] params) {
  Assert.state(this.preparedStatementFactory != null, "No PreparedStatementFactory available");
  return this.preparedStatementFactory.newPreparedStatementCreator(params);
}

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

/**
 * Overloaded variant of {@link #send(Object)} that also accepts a MediaType
 * hint for how to serialize the given Object.
 * @param object the object to write
 * @param mediaType a MediaType hint for selecting an HttpMessageConverter
 * @throws IOException raised when an I/O error occurs
 * @throws java.lang.IllegalStateException wraps any other errors
 */
public synchronized void send(Object object, @Nullable MediaType mediaType) throws IOException {
  Assert.state(!this.complete, "ResponseBodyEmitter is already set complete");
  sendInternal(object, mediaType);
}

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

@Override
@Nullable
public URI getUri() {
  Assert.state(this.webSocketSession != null, "WebSocketSession not yet initialized");
  return this.webSocketSession.getUri();
}