列类型无效:未对类oracle.jdbc.driver.T4CRowidAccessor实现getInt

Question

我想在oracle数据库11g中发布数据并且我使用输入字段输入数据,数据输入到数据库但只是id coulmn和另一个字符串coulmn得到正确的数据但是另一个coulmn得到null或0所以我无法解决这个问题在运行时我有这个错误

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

这是我的代码

    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;
}

}

这是我的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帮我把数据插入表但不完整,我有这个运行时错误

             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建议的那样,我只是面临同样的问题并找到了解决方案:

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

执行查询后,执行以下操作以获取插入的ID.

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

Answer 2

当使用Oracle JDBC驱动程序不返回生成的ID Statement.RETURN_GENERATED_KEYS,因此生成的密钥的第一列ResultSet是不是一个int,而是返回ROWID(参见上的rowid JDBC教程)插入行(这样你就可以自己查询行).据我所知,其原因是Oracle没有标识类型,因此实际上并不知道哪个字段是生成的密钥.

相反,您应该能够使用prepareStatement(String sql, int[] columnIndexes)或显式指定要返回的列prepareStatement(String sql, String[] columnNames).