@Entity

@Table(name = "user")

public class User {

    @Id

    @Column(columnDefinition="varchar(255)")

    @GeneratedValue(generator="idGenerator")

    @GenericGenerator(name="idGenerator", strategy="uuid")

    private String userId;

    private String userName;

    private String nickName;

    private String passWord;

    private String phoneNumber;

    @ManyToOne(cascade = {CascadeType.ALL},optional = true,fetch = FetchType.LAZY)

    @JoinColumn(name = "enterprise_Id")

    private EnterpriseInfo enterpriseInfo;

    }

import com.google.gson.Gson;

import com.google.gson.TypeAdapter;

import com.google.gson.TypeAdapterFactory;

import com.google.gson.reflect.TypeToken;

import com.google.gson.stream.JsonReader;

import com.google.gson.stream.JsonWriter;

import org.hibernate.Hibernate;

import org.hibernate.proxy.HibernateProxy;

import java.io.IOException;

/**

 * @ClassName HibernateProxyTypeAdapter

 * @Description 解决gson转换中对象有懒加载情况报错:

 * @Author PC

 * @Date 2018/10/29 10:23

 **/

public class HibernateProxyTypeAdapter extends TypeAdapter<HibernateProxy> {

    public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {

        @Override

        public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {

            return (HibernateProxy.class.isAssignableFrom(typeToken.getRawType())? (TypeAdapter) new HibernateProxyTypeAdapter(gson):null);

        }

    };

    private final Gson context;

    private HibernateProxyTypeAdapter(Gson gson){

        this.context = gson;

    }

    @Override

    public void write(JsonWriter jsonWriter, HibernateProxy hibernateProxy) throws IOException {

        if (hibernateProxy==null){

            jsonWriter.nullValue();

            return;

        }

        Class<?> baseType = Hibernate.getClass(hibernateProxy);

        TypeAdapter delegate = context.getAdapter(TypeToken.get(baseType));

        Object unproxiedValue = ((HibernateProxy) hibernateProxy).getHibernateLazyInitializer()

                .getImplementation();

        delegate.write(jsonWriter,unproxiedValue);

    }

    @Override

    public HibernateProxy read(JsonReader jsonReader) throws IOException {

        throw new UnsupportedOperationException("Not support");

    }

}

Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd")

      .registerTypeAdapterFactory( HibernateProxyTypeAdapter.FACTORY).create() ;