com.google.gson.JsonSyntaxException：java.lang.IllegalStateException：预期BEGIN_ARRAY但是STRING

这是我使用Gson进行序列化的第一种方法.我像这样回复了我的Android应用程序的facebook响应

我的Json：

 {"data": [
    {
        "pic_square": "https://fbcdn-profile-a.akamaihd.netxxxx1388091435_797626998_q.jpg",
        "uid": "10202xxx852765",
        "name": "Mister X"
    },
    {
        "pic_square": "https://fbcdn-profile-a.akamaihd.netxxxx1388091435_797626998_q.jpg",
        "uid": "10202xxx852765",
        "name": "Mister X"
    }
   ]
}



    try {
       final GsonBuilder builder = new GsonBuilder();
       final Gson gson = builder.create();
       JSONObject data= response.getGraphObject().getInnerjsonObject();             
       FacebookResponses facebookResponses= gson.fromJson(data.toString(),FacebookResponses.class); //exception here
       Log.i(TAG, "Result: " + facebookResponses.toString());
    } catch (JsonSyntaxException e) {
        e.printstacktrace();

}
我的课

public class FacebookResponses implements Serializable {
  private static final long serialVersionUID = 1L;
      @Serializedname("data");
      private FacebookRisp[] data;
}

class FacebookRisp implements Serializable {

    private static final long serialVersionUID = 1L;

   @Serializedname("pic_square")
   private String[] pic_square;

   @Serializedname("uid")
   private String[] uid;

   @Serializedname("name")
   private String[] name;

   public String[] getPic_square() {
        return pic_square;
   }

   public void setPic_square(String[] pic_square) {
    this.pic_square = pic_square;
   }

    public String[] getUid() {
    return uid;
   }

   public void setUid(String[] uid) {
    this.uid = uid;
   }

   public String[] getName() {
    return name;
   }

   public void setName(String[] name) {
    this.name = name;
   }

 }

我明白了
com.google.gson.JsonSyntaxException：java.lang.IllegalStateException：预期为BEGIN_ARRAY但在第1行第118列为STRING

更新：
我修改了爱琴海的答案,问题是[]

@Serializedname("pic_square")
private String**[]** pic_square;   //ex here and others

解决方法:

将您的FacebookResponses类更改为：

private class FacebookResponses {
    private Data[] data;
}

private class Data {
    @Serializedname("pic_square")
    private String picSquare;
    private String uid;
    private String name;
}

编辑：因为您的json响应的结构如下所示：

Hibernate Search + Spring Boot：java.lang.IllegalStateException：没有可用的事务性EntityManager

我正在尝试按照本教程在Spring Boot应用程序中设置Hibernate Search 。问题是我在启动时遇到错误：

Caused by: java.lang.IllegalStateException: No transactional EntityManager available    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:279) ~[spring-orm-5.0.7.RELEASE.jar:5.0.7.RELEASE]    at com.sun.proxy.$Proxy110.unwrap(Unknown Source) ~[na:na]    at org.hibernate.search.jpa.Search.getSession(Search.java:55) ~[hibernate-search-orm-5.9.0.Final.jar:5.9.0.Final]    at org.hibernate.search.jpa.Search.getFullTextEntityManager(Search.java:49) ~[hibernate-search-orm-5.9.0.Final.jar:5.9.0.Final]    at mz.api.spring.service.HibernateSearchService.initializeHibernateSearch(HibernateSearchService.java:26) ~[classes/:na]    at mz.api.spring.config.HibernateSearchConfig.hibernateSearchService(HibernateSearchConfig.java:25) ~[classes/:na]    at mz.api.spring.config.HibernateSearchConfig$$EnhancerBySpringCGLIB$$6594e5b4.CGLIB$hibernateSearchService$0(<generated>) ~[classes/:na]    at mz.api.spring.config.HibernateSearchConfig$$EnhancerBySpringCGLIB$$6594e5b4$$FastClassBySpringCGLIB$$ab525f18.invoke(<generated>) ~[classes/:na]    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE]    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]    at mz.api.spring.config.HibernateSearchConfig$$EnhancerBySpringCGLIB$$6594e5b4.hibernateSearchService(<generated>) ~[classes/:na]    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]    ... 24 common frames omitted

我不明白是什么原因导致了这个问题。

相关代码：

@SpringBootApplication@EnableJpaRepositories(basePackages = "mz.api.spring.repository")@EntityScan(basePackages = "mz.api.hibernate.model")@EnableTransactionManagementpublic class Application {    private final static Logger LOGGER = LogManager.getLogger(Application.class);    public static void main(String[] args) {        LOGGER.debug("Running application ..");        SpringApplication.run(Application.class, args);    }}

..

@Service public class HibernateSearchService {    private final EntityManager entityManager;    @Autowired    public HibernateSearchService(EntityManager entityManager) {        this.entityManager = entityManager;    }    public void initializeHibernateSearch() {        try {            FullTextEntityManager fullTextEntityManager = getFullTextEntityManager(this.entityManager);            fullTextEntityManager.createIndexer().startAndWait();        } catch (InterruptedException e) {            e.printStackTrace();        }        }}

..

@Configurationpublic class HibernateSearchConfig {    private final EntityManager entityManager;    @Autowired    public HibernateSearchConfig(EntityManager entityManager) {        this.entityManager = entityManager;    }    @Bean    HibernateSearchService hibernateSearchService() {        HibernateSearchService hibernateSearchService = new HibernateSearchService(this.entityManager);        hibernateSearchService.initializeHibernateSearch();        return hibernateSearchService;    }}

答案1

我设法通过自动装配EntityManagerFactory使其起作用。然后使用EntityManagerFactory创建一个EntityManager。

@Servicepublic class HibernateSearchService {    private final EntityManager entityManager;    @Autowired    public HibernateSearchService(final EntityManagerFactory entityManagerFactory) {        this.entityManager = entityManagerFactory.createEntityManager();    }    @PostConstruct    public void initializeHibernateSearch() {        try {            FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager);            fullTextEntityManager.createIndexer().startAndWait();        } catch (InterruptedException e) {            e.printStackTrace();        }    }

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