标签: spring-web

我有这个枚举:

public enum SortEnum {
    asc, desc;
}

我想用作休息请求的参数:

@RequestMapping(value = "/events", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
public List<Event> getEvents(@RequestParam(name = "sort", required = false) SortEnum sort) {

我发送这些请求时工作正常

/events 
/events?sort=asc
/events?sort=desc

但是当我发送时:

/events?sort=somethingElse

我在控制台中得到500响应和此消息:

2016-09-29 17:20:51.600 DEBUG 5104 --- [  XNIO-2 task-6] com.myApp.aop.logging.LoggingAspect   : Enter: com.myApp.web.rest.errors.ExceptionTranslator.processRuntimeException() with argument[s] = [org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type [java.lang.String] to required type [com.myApp.common.SortEnum]; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam com.myApp.common.SortEnum] for value 'somethingElse'; …

对于我的Spring-Boot应用程序,我通过@Configuration文件提供了RestTemplate,因此我可以添加合理的默认值(ex Timeouts).对于我的集成测试,我想模拟RestTemplate,因为我不想连接到外部服务 - 我知道期望的响应.我尝试在集成测试包中提供不同的实现,希望后者将覆盖实际的实现,但是反过来检查日志:真正的实现覆盖了测试.

如何确保TestConfig中的那个是使用的？

这是我的配置文件:

@Configuration
public class RestTemplateProvider {

    private static final int DEFAULT_SERVICE_TIMEOUT = 5_000;

    @Bean
    public RestTemplate restTemplate(){
        return new RestTemplate(buildClientConfigurationFactory());
    }

    private ClientHttpRequestFactory buildClientConfigurationFactory() {
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
        factory.setReadTimeout(DEFAULT_SERVICE_TIMEOUT);
        factory.setConnectTimeout(DEFAULT_SERVICE_TIMEOUT);
        return factory;
    }
}

整合测试:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = TestConfiguration.class)
@WebAppConfiguration
@ActiveProfiles("it")
public abstract class IntegrationTest {}

TestConfiguration类:

@Configuration
@Import({Application.class, MockRestTemplateConfiguration.class})
public class TestConfiguration {}

最后是MockRestTemplateConfiguration

@Configuration
public class MockRestTemplateConfiguration {

    @Bean
    public RestTemplate restTemplate() {
        return Mockito.mock(RestTemplate.class)
    }
}

我正在使用spring-boot并添加spring-web依赖于maven pom,以便利用RestTemplate.

现在春天试图初始化一个EmbeddedServletContext.我该怎样预防呢？

Exception in thread "main" org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:474)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
Caused by: org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getEmbeddedServletContainerFactory(EmbeddedWebApplicationContext.java:183)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:156)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130)
    ... 8 more

更新

我的问题是如何在spring boot中初始化一个孤立的spring webmvc web-app.隔离的Web应用程序应该:

1. 不应该在应用程序类中初始化自己.我们希望通过自动配置在启动器中执行这些操作.我们有多个这样的网络应用程序,我们需要自动配置的灵活性.
2. 能够使用以下接口自定义自身:( WebSecurityConfigurer我们有多个web-apps,每个都以自己的方式执行安全性)和EmbeddedServletContainerCustomizer(设置servlet的上下文路径).
3. 我们需要隔离特定于某些Web应用程序的bean,并且不希望它们进入父上下文.

进展

下面的配置类列在我的META-INF/spring.factories中.

以下策略不会导致运行web-mvc servlet.未设置上下文路径,也未定制安全性.我的预感是我需要包含某些webmvc bean来处理上下文并根据存在的bean自动配置 - 类似于我如何通过包含来启动基于引导的属性占位符配置PropertySourcesPlaceholderConfigurer.class.

@Configuration
@AutoConfigureAfter(DaoServicesConfiguration.class)
public class MyServletConfiguration {
    @Autowired
    ApplicationContext parentApplicationContext;

    @Bean
    public ServletRegistrationBean myApi() {
        AnnotationConfigWebApplicationContext applicationContext = new AnnotationConfigWebApplicationContext();
        applicationContext.setParent(parentApplicationContext);
        applicationContext.register(PropertySourcesPlaceholderConfigurer.class);
        // a few more classes registered. These classes cannot be added to 
        // the parent application context.
        // includes implementations of 
        //   WebSecurityConfigurerAdapter
        //   EmbeddedServletContainerCustomizer

        applicationContext.scan(
                // a few packages
        );

        DispatcherServlet ds = new DispatcherServlet();
        ds.setApplicationContext(applicationContext);

        ServletRegistrationBean …

Abstract控制器类需要REST中的对象列表.使用Spring RestTemplate时,它不会将其映射到所需的类,而是返回Linked HashMAp

 public List<T> restFindAll() {

    RestTemplate restTemplate = RestClient.build().restTemplate();
    ParameterizedTypeReference<List<T>>  parameterizedTypeReference = new ParameterizedTypeReference<List<T>>(){};
    String uri= BASE_URI +"/"+ getPath();

    ResponseEntity<List<T>> exchange = restTemplate.exchange(uri, HttpMethod.GET, null,parameterizedTypeReference);
    List<T> entities = exchange.getBody();
    // here entities are List<LinkedHashMap>
    return entities;

}

如果我用,

ParameterizedTypeReference<List<AttributeInfo>>  parameterizedTypeReference = 
    new ParameterizedTypeReference<List<AttributeInfo>>(){};
    ResponseEntity<List<AttributeInfo>> exchange =
  restTemplate.exchange(uri, HttpMethod.GET, null,parameterizedTypeReference);

它工作正常.但不能放入所有子类,任何其他解决方案.

TestController.java

@RestController
public class TestController {

    @Autowired
    private TestClass testClass;

    @RequestMapping(value = "/test", method = RequestMethod.GET)
    public void testThread(HttpServletResponse response) throws Exception {
        testClass.doSomething();
    }
}

TestClass.java

@Component
@Scope("prototype")
public class TestClass {

    public TestClass() {
        System.out.println("new test class constructed.");
    }

    public void doSomething() {

    }

}

正如你所看到的,我正在试图弄清楚TestClass当访问"xxx/test"时是否注入了新的."new test class constructed."只打印一次(第一次我触发"xxx/test"),而我期待它打印平等.那个卑鄙的@Autowired对象只能是@Singleton吗？@Scope工作怎么样？

编辑:

TestController.java

@RestController
public class TestController {

    @Autowired
    private TestClass testClass;

    @RequestMapping(value = "/test", method = RequestMethod.GET)
    public void …

你能不能帮助我了解spring-boot-starter-web VS spring-boot-starter-web-services VS spring-boot-starter-jersey之间的区别

文档说Starter用于使用JAX-RS和Jersey构建RESTful Web应用程序.spring-boot-starter-web的替代品

谢谢

从一段时间以前,我正在按照Spring博客实施长轮询.

这里我的转换方法具有与以前相同的响应签名,但它现在使用长轮询而不是立即响应:

private Map<String, DeferredResult<ResponseEntity<?>>> requests = new ConcurrentHashMap<>();

@RequestMapping(value = "/{uuid}", method = RequestMethod.GET)
public DeferredResult<ResponseEntity<?>> poll(@PathVariable("uuid") final String uuid) {
    // Create & store a new instance
    ResponseEntity<?> pendingOnTimeout = ResponseEntity.accepted().build();
    DeferredResult<ResponseEntity<?>> deferredResult = new DeferredResult<>(TWENTYFIVE_SECONDS, pendingOnTimeout);
    requests.put(uuid, deferredResult);

    // Clean up poll requests when done
    deferredResult.onCompletion(() -> {
        requests.remove(deferredResult);
    });

    // Set result if already available
    Task task = taskHolder.retrieve(uuid);
    if (task == null)
        deferredResult.setResult(ResponseEntity.status(HttpStatus.GONE).build());
    else
        // Done (or canceled): Redirect to …

我有一个简单的Spring Boot Web应用程序.我正在尝试从服务器接收一些数据.Controller返回一个集合,但浏览器接收空JSON - 大括号的数量等于来自服务器的对象数,但其内容为空.

@RestController
public class EmployeeController {

@Autowired
private EmployeeManagerImpl employeeManagerImpl;

    @RequestMapping(path="/employees", method = RequestMethod.GET)
    public Iterable<Employee> getAllEmployees() {
        Iterable<Employee> employeesIterable = employeeManagerImpl.getAllEmployees();
        return employeesIterable;
    }
}

该方法触发,浏览器显示:

在控制台中没有更多.有任何想法吗？

编辑:Employee.java

@Entity
public class Employee implements Serializable{

    private static final long serialVersionUID = -1723798766434132067L;

    @Id
    @Getter @Setter 
    @GeneratedValue
    private Long id;

    @Getter @Setter
    @Column(name = "first_name")
    private String firstName;

    @Getter @Setter
    @Column(name = "last_name")
    private String lastName;

    @Getter @Setter
    private BigDecimal salary;

    public Employee(){

    }
}

我有这个控制器方法:

@PostMapping(
        value = "/createleave",
        params = {"start","end","hours","username"})
public void createLeave(@RequestParam(value = "start") String start,
                        @RequestParam(value = "end") String end,
                        @RequestParam(value = "hours") String hours,
                        @RequestParam(value = "username") String username){
    System.out.println("Entering createLeave " + start + " " + end + " " + hours + " " + username);
    LeaveQuery newLeaveQuery = new LeaveQuery();
    Account account = accountRepository.findByUsername(username);
    newLeaveQuery.setAccount(account);
    newLeaveQuery.setStartDate(new Date(Long.parseLong(start)));
    newLeaveQuery.setEndDate(new Date(Long.parseLong(end)));
    newLeaveQuery.setTotalHours(Integer.parseInt(hours));
    leaveQueryRepository.save(newLeaveQuery);
}

但是,当我向此端点发送帖子请求时,我得到以下信息

"{"timestamp":1511444885321,"status":400,"error":"Bad Request","exception":"org.springframework.web.bind.UnsatisfiedServletRequestParameterException","message":"Parameter conditions \"start, end, hours, username\" not met for actual request …