列類型無效：未對類oracle.jdbc.driver.T4CRowidAccessor實現getInt

Question

我想在oracle數據庫11g中發布數據並且我使用輸入字段輸入數據，數據輸入到數據庫但只是id coulmn和另一個字符串coulmn得到正確的數據但是另一個coulmn得到null或0所以我無法解決這個問題在運行時我有這個錯誤

Invalid column type: getInt not implemented for class oracle.jdbc.driver.T4CRowidAccessor

這是我的代碼

    public Client newClient(Client client){
    try {
        con = DBConnection.getConnection(driver, url, name, pass);      
        pstmt = con.prepareStatement("INSERT INTO CLIENT (CID, FIRSTNAME, LASTNAME, CAREER, CSALARY) VALUES (CLIENT_ID.nextval, ?, ?, ?, ?)", Statement.RETURN_GENERATED_KEYS);

        pstmt.setString(1, client.getFirstName());
        pstmt.setString(2, client.getLastName());
        pstmt.setString(3, client.getCareer());
        pstmt.setInt(4, client.getcSalary());
        pstmt.executeUpdate();      
        rs = pstmt.getGeneratedKeys();
         rs.next();
       Integer id = rs.getInt(1);
            client.setcId(id);          
    }catch(Exception ex){
        ex.printStackTrace();
        return null;
    }finally{
        try{ rs.close(); }catch (Exception e){}
        try{ pstmt.close();}catch (Exception e){}
        try{ con.close();}catch (Exception e){}
    }//finally
    return client;
}   

}

@XmlRootElement
    public class Client {
private Integer cId;
private String firstName;
private String lastName;
private String career;
private int cSalary;
public Integer getcId() {
    return cId;
}
public void setcId(Integer cId) {
    this.cId = cId;
}
public String getFirstName() {
    return firstName;
}
public void setFirstName(String firstName) {
    this.firstName = firstName;
}
public String getLastName() {
    return lastName;
}
public void setLastName(String lastName) {
    this.lastName = lastName;
}
public String getCareer() {
    return career;
}
public void setCareer(String career) {
    this.career = career;
}
public int getcSalary() {
    return cSalary;
}
public void setcSalary(int cSalary) {
    this.cSalary = cSalary;
}

}

這是我的SQL

  CREATE TABLE "AHMAD"."CLIENT" 
  ( "CID" NUMBER(*,0) NOT NULL ENABLE, 
"FIRSTNAME" VARCHAR2(255 BYTE), 
"LASTNAME" VARCHAR2(255 BYTE), 
"CAREER" VARCHAR2(255 BYTE), 
"CSALARY" NUMBER, 
 CONSTRAINT "CLIENT_PK" PRIMARY KEY ("CID")
   USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 
 STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT        CELL_FLASH_CACHE DEFAULT)
   TABLESPACE "USERS"  ENABLE
   ) SEGMENT CREATION IMMEDIATE 
     PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
      STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
         PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE            DEFAULT CELL_FLASH_CACHE DEFAULT)
         TABLESPACE "USERS" ;

PLZ幫我把數據插入表但不完整，我有這個運行時錯誤

             java.sql.SQLException: Invalid column type: getInt not implemented for   class oracle.jdbc.driver.T4CRowidAccessor
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.Accessor.unimpl(Accessor.java:358)
at oracle.jdbc.driver.Accessor.getInt(Accessor.java:468)
at oracle.jdbc.driver.OracleReturnResultSet.getInt(OracleReturnResultSet.java:265)
at com.rest.client.ClientDAO.newClient(ClientDAO.java:99)
at com.rest.client.ClientResourcs.newClient(ClientResourcs.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at        com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.jav a:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
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.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:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Answer 1

像Mark建議的那樣，我只是面臨同樣的問題並找到了解決方案：

String generatedColumns[] = { "ID" };
stmt = con.prepareStatement(query, generatedColumns);

執行查詢后，執行以下操作以獲取插入的ID。

rs = stmt.getGeneratedKeys();
rs.next();
rs.getInt(1);

Answer 2

使用Statement.RETURN_GENERATED_KEYS時，Oracle JDBC驅動程序不返回生成的id，因此生成的鍵ResultSet的第一列不是int ，而是返回插入行的ROWID （請參閱rowids的JDBC教程 ）（所以你可以自己查詢一行）。 據我所知，其原因是Oracle沒有標識類型，因此實際上並不知道哪個字段是生成的密鑰。

相反，您應該能夠使用prepareStatement(String sql, int[] columnIndexes)或prepareStatement(String sql, String[] columnNames)顯式指定要返回的列。

Answer 3

不知道這個問題是否得到了解決，但我遇到了同樣的問題，它通過在實體類中用int替換Integer來解決（在你的情況下是Client類）