保存到json postgres：java.lang.UnsupportedOperationException

我想將json數據保存到數據庫，但首先我需要解析JSON數據。我做矢量類型解析器，但我無法協調。保存到json postgres：java.lang.UnsupportedOperationException

實施例：以GeoJSON

{"coordinates":[-48.287108838558,-15.679686963558],"type":"Point"}

我保存到向量類型。我GeoJSON的解析代碼：

public class GeoJSON{ 

private String type; 
private String data; 
public String getType() {return type;} 
public void setType(String type) {this.type = type;} 

public String getData() {return data;} 
public void setData(String data) { this.data = data; } 

public GeoJSON() { 
} 

public GeoJSON(JSONObject json) { 
    parse(json); 
} 

public GeoJSON parse(JSONObject json) { 
    StringWriter out = new StringWriter(); 
    json.write(out); 
    this.data = out.toString(); 
    this.type = json.getString("type"); 

    try { 
     out.close(); 
    } catch (IOException ex) { 
     System.out.println(ex.getMessage()); 
     throw new RuntimeException(ex); 
    } 

    return this; 
}

後在myController的insert方法：

public boolean insert(GeoJSON item) 
{ 

SavegeojsonEntity theEvent = new SavegeojsonEntity(); 

    boolean success; 
    try { 
     String vectorType = item.getType(); 
     EntityManager em = HibernateSpatialJPA.createEntityManager(); 
     em.getTransaction().begin(); 
     theEvent.setVectorType(vectorType); 

     if(vectorType.equals("Point")) 
     { 
      Geometry geom = wktToGeometry(item.getData()); 
      System.out.println("geomPo "+geom); 
      theEvent.setGeom((Point)geom); 
     } 
     em.persist(theEvent); 
     em.getTransaction().commit(); 
     em.close(); 
     success=true; 
     HibernateSpatialJPA.close(); 
    } 
    catch (Exception ex) 
    { 
     ex.printStackTrace(); 
     success = false; 
    } 
    return success; 
} 
private Geometry wktToGeometry(String wktPoint) { 
    WKTReader fromText = new WKTReader(); 
    Geometry geom = null; 
    try { 
     geom = fromText.read(wktPoint); 
    } catch (com.vividsolutions.jts.io.ParseException e) { 
     throw new RuntimeException("Not a WKT string:" + wktPoint); 
    } 
    return geom; 
}

我SavegeojsonEntity類：（com.vividsolutions.jts.geom *;）

點

private Point geom; 
@Basic 
@Column(columnDefinition="Geometry",name = "geom", nullable = true, insertable = true, updatable = true) 
@Type(type="org.hibernate.spatial.GeometryType") 
public Point getGeom() {return geom;} 
public void setGeom(Point geom) {this.geom = geom;}`

該方法插入

System.out.println("geomPo "+geom); geomPo = null

因爲

item.getData() value: "coordinates":[-48.287108838558,-15.679686963558],"type":"Point"

我想item.getData() value : -48.287108838558，-15.679686963558

這是我stracktrace：

javax.persistence.RollbackException: Error while committing the transaction 
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:92) 
at com.springapp.model.SavegeojsonManager.insert(SavegeojsonManager.java:55) 
at com.springapp.model.SavegeojsonManager.insert(SavegeojsonManager.java:26) 
at com.springapp.mvc.HSpatialController.saveGeoJson(HSpatialController.java:46) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:497) 
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215) 
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) 
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721) 
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) 
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) 
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2430) 
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2419) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at java.lang.Thread.run(Thread.java:745) 
Caused by: java.lang.UnsupportedOperationException 
at org.hibernate.spatial.GeometrySqlTypeDescriptor.getBinder(GeometrySqlTypeDescriptor.java:52) 
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:305) 
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:300) 
at org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:57) 
at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2705) 
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2959) 
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3403) 
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:88) 
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362) 
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:354) 
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:275) 
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:326) 
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52) 
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1214) 
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:403) 
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101) 
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175) 
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:75) 
... 40 more

請。在此先感謝。

來源

2015-08-15 develop

請指定版本。看起來像重複[http://stackoverflow.com/questions/12236428/hibernate-persist-failure-with-postgis-geometry] – sibnick

Postgresql 9.4，休眠4.1.6。我刪除了wktGeometry方法和級聯。我寫了，而不是'JSONObject jsonRootObject = new JSONObject（item.getData（））; JSONArray jsonArray = jsonRootObject.getJSONArray（「coordinates」）;'和代碼輸出：[33.451172411442,37.889648973942]。我想保存postgresql列但如何？ @sibnick – develop

修訂

好了，所以我們終於做到了一番調查低谷遠程桌面後。

結論是在SavegeojsonEntity上有錯誤的註釋。

註釋工作在領域不是GET方法
有錯誤的話：不是：

<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL82Dialect"/>

最appopriate一個是

<property name="hibernate.dialect" value="org.hibernate.spatial.dialect.postgis.PostgisDialect"/>

而當然這個al所以必須做出正確的Point。

也有一些是錯誤的您以GeoJSON

public class GeoJSON{ 

    private String type; 
    private String data; 
    private String pointRepresentation; 
    public String getType() {return type;} 
    public void setType(String type) {this.type = type;} 
    public String getPointRepresentation(){return this.pointRepresentation;} 

    public String getData() {return data;} 
    public void setData(String data) { this.data = data; } 

    public GeoJSON() { 
    } 

    public GeoJSON(JSONObject json) { 
     parse(json); 
    } 

    public GeoJSON parse(JSONObject json) { 
     JSONArray jsonArray = json.getJSONArray("coordinates"); 
     this.type = json.getString("type"); 
     data = ""; 
     for (int i = 0; i < jsonArray.length(); i++) { 
      data += jsonArray.get(i) + ","; 
     } 
     if (data != null && !data.isEmpty()) { 
      data = data.substring(0, data.length() - 1); 
      pointRepresentation = type + "(" + data + ")"; 
     } 
     return this; 
    } 
}

，並在這兒pointRepresentation：

if(vectorType.equals("Point")) 
     { 
      Geometry geom = wktToGeometry(item.getPointRepresentation()); 
      System.out.println("geomPo "+geom); 
      theEvent.setGeom((Point)geom); 
     }

和檢查結果。

來源

2015-08-15 19:07:02

我做了並導致'JSONArray [0]不是一個字符串.'，我看不到'System.out.println（「geomPo」+ geom）;'@PawelGlowacz – develop

剛剛更新了GeoJSON。 –

我喜歡你說過的話@PawelGlowacz – develop

保存到json postgres：java.lang.UnsupportedOperationException

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