Tiếp cận một lĩnh vực oracle sql qua java

Tôi đã kết nối oracle để chương trình Java của tôi, và nó làm việc tốt nhưng nó mang lại một vấn đề trên một sân khóa chính, khi tôi cố gắng truy cập vào nó nó ném một java.sql.SQLException:Tiếp cận một lĩnh vực oracle sql qua java

select user_id 
    from users 
where users.user_name = '"+username+"' 
    and `users.user_role = (select user_roles.role_id FROM user_roles where `user_roles.role_name = '"+role+"')"

Truy vấn hoạt động, khi chạy trong sqlDeveloper.

Đây là mã:

Statement st = null; 
ResultSet rs = null; 
Integer userMovedTo = new Integer(0) ; 
Integer userMovedBy = new Integer(0); 

try { 
    st = conn.createStatement();     
    rs = st.executeQuery(query); 
    userMovedTo = rs.getInt("USER_ID");

Nó cung cấp cho ngoại lệ và không xác định lĩnh vực USER_ID.

USERS bảng và trình tự:

CREATE TABLE Users(
    user_ID  INT   NOT NULL, 
    user_name  VARCHAR (20) NOT NULL, 
    user_password VARCHAR (20) NOT NULL, 
    user_role  INT   NOT NULL, 

    PRIMARY KEY (user_ID) 
); 

CREATE SEQUENCE seq_users 
MINVALUE 1 
START WITH 1 
INCREMENT BY 1 
CACHE 10;

ErrorStack:

java.sql.SQLException: ResultSet.next was not called 
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) 
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146) 
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208) 
    at oracle.jdbc.driver.OracleResultSetImpl.getInt(OracleResultSetImpl.java:511) 
    at oracle.jdbc.driver.OracleResultSet.getInt(OracleResultSet.java:1563) 
    at com.kpk.daoImpl.FileDataDao.insertFileMovement(FileDataDao.java:64) 
    at com.mvc.spring.FileMovementController.markFile(FileMovementController.java:57) 
    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 org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213) 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527) 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    at java.lang.Thread.run(Unknown Source) 
java.sql.SQLException: ORA-00917: missing comma 

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) 
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331) 
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288) 
    at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743) 
    at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:207) 
    at oracle.jdbc.driver.T4CStatement.executeForRows(T4CStatement.java:946) 
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1160) 
    at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1264) 
    at com.kpk.daoImpl.FileDataDao.insertIntoFileMovement(FileDataDao.java:93) 
    at com.kpk.daoImpl.FileDataDao.insertFileMovement(FileDataDao.java:75) 
    at com.mvc.spring.FileMovementController.markFile(FileMovementController.java:57) 
    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 org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213) 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527) 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    at java.lang.Thread.run(Unknown Source)

Nguồn

2015-08-12 Haider Sultan

Bạn nên hiển thị cho chúng tôi truy vấn _Java_ sql bạn đang thực hiện. –

chọn user_id từ người dùng trong đó user.user_name = 'admin' và 'users.user_role = (chọn user_roles.role_id FROM user_roles trong đó' user_roles.role_name = 'system admin'); –

Bạn có nghĩ 'USER_ID' giống với 'user_ID' cho phương thức 'rs.getInt()' không? –

stack trace bản thân nói cho bạn các vấn đề rs.next cuộc gọi đó đi qua các bản ghi trong resultset và getInt (something)

Statement st = null; 
ResultSet rs = null; 
Integer userMovedTo = new Integer(0) ; 
Integer userMovedBy = new Integer(0); 
try { 
     st = conn.createStatement(); 
     rs = st.executeQuery(query); 
     if(rs.next()){ 
      userMovedTo = rs.getInt("USER_ID"); 
     }

Nguồn

2015-08-12 05:44:50

Vâng, đó là vấn đề. Cảm ơn bạn –

Tiếp cận một lĩnh vực oracle sql qua java

Trả lời

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