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現在、DB接続用のMySQLでStruts2 Webアプリケーションを実行していて、実際に動作するコードのセクションに問題があります。一定のエラー：私は現在持っているMySQL文の終了後に操作が許可されない
com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: No operations allowed after statement closed.
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:888)
at com.mysql.jdbc.Statement.checkClosed(Statement.java:385)
at com.mysql.jdbc.Statement.executeQuery(Statement.java:1107)
at com.jpalenci.action.RequestAction.getUserData(RequestAction.java:75)
at com.jpalenci.action.RequestAction.execute(RequestAction.java:50)
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 ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:871)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1294)
at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)
at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)
at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)
at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1370)
at ognl.ASTMethod.getValueBody(ASTMethod.java:90)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
at ognl.SimpleNode.getValue(SimpleNode.java:258)
at ognl.Ognl.getValue(Ognl.java:494)
at ognl.Ognl.getValue(Ognl.java:458)
at com.opensymphony.xwork2.ognl.OgnlUtil$2.execute(OgnlUtil.java:315)
at com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecute(OgnlUtil.java:346)
at com.opensymphony.xwork2.ognl.OgnlUtil.getValue(OgnlUtil.java:313)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251)
at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:567)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
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:217)
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:616)
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:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
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)
でrequestActionクラスは、基本的に私の作業プロジェクトの一つの完全なコピーである、しかし、いくつかの理由のために私は、それはこのアプリケーションのために動作させることはできません。
RequestAction.Java：
public String execute() throws SQLException{
String ret ="";
try{
Class.forName(myDriver);
try {
getDBConn();
callInsertUserData();
getUserData();
} catch (Exception e) {
e.printStackTrace();
}
ret = SUCCESS;
} catch(Exception e){
e.printStackTrace();
ret = ERROR;
} finally {
if(dbConn != null){
dbConn.close();
}
}
return ret;
}
public static void getUserData() throws SQLException{
getDBConn();
try{
String selectQuery = "SELECT FullName, PhoneNumber, EmailAddress, CheckOutDate, DeviceUsage, DeviceSelection "
+ "FROM devices_requested";
rs = callStmt.executeQuery(selectQuery);
rs.last();
out_FullName = rs.getString("FullName");
out_PhoneNumber = rs.getString("PhoneNumber");
out_EmailAddress = rs.getString("EmailAddress");
out_CheckOutDate = rs.getString("CheckOutDate");
out_DeviceUseage = rs.getString("DeviceUsage");
out_DeviceSelection = rs.getString("DeviceSelection");
callStmt.executeUpdate();
rs.close();
} catch(SQLException e){
e.printStackTrace();
} finally {
if(callStmt != null){
callStmt.close();
}
}
}
/*
* Method Which Calls To MySQL Stored Procedure That Inserts Information
* That Comes From The Register Form,Which Then Is Updated Into The
* DataBase.
*/
public static void callInsertUserData() throws SQLException{
String insertUserData = "{CALL insertUserData(?,?,?,?,?,?)}";
try{
dbConn = getDBConn();
callStmt = dbConn.prepareCall(insertUserData);
callStmt.setString(1, in_FullName);
callStmt.setString(2, in_PhoneNumber);
callStmt.setString(3, in_EmailAddress);
callStmt.setString(4, in_CheckOutDate);
callStmt.setString(5, in_DeviceUsage);
callStmt.setString(6, in_DeviceSelection);
callStmt.executeUpdate();
} catch (SQLException e) {
System.out.println(e.getMessage());
e.printStackTrace();
} finally {
if (callStmt != null) {
callStmt.close();
}
}
}
/*
* MySQL DataBase Connection, Attempts To Connect To Specified DB URL With
* UserName & Password.
*/
private static Connection getDBConn() {
Connection dbConn = null;
try {
Class.forName(myDriver);
} catch (ClassNotFoundException e) {
System.out.println(e.getMessage());
}
try {
dbConn = DriverManager.getConnection(myURL, dbUser, dbPass);
return dbConn;
} catch (SQLException e) {
System.out.println(e.getMessage());
}
return dbConn;
}
は接続イマイチの作業が、私は周りの混乱にしようと、それは「接続を行うことができそこにあるかの違い見るために私の他のプロジェクトから見えてきた理由は見当もつかないcallStmt.executeUpdate();が問題を与えていない限り、それを見つけることができません。
編集：@Roman Cによって読み取りのために推奨されたもので、私のinsertメソッドを更新しました Updated callInUserData Method:
public static void callInUserData() throws SQLException {
// CallableStatement callStmt = null;
Connection dbConn = getDBConn();
String inUserData = "{CALL inUserData(?,?,?,?,?,?)}";
CallableStatement callStmt = dbConn.prepareCall(inUserData);
try {
// System.out.println("I am here" + FullName.toString());
// System.exit(1);
callStmt.setString("in_FullName", FullName);
callStmt.setString("in_PhoneNumber", PhoneNumber);
callStmt.setString("in_EmailAddress", EmailAddress);
callStmt.setString("in_CheckOutDate", CheckOutDate);
callStmt.setString("in_DeviceUsage", DeviceUsage);
callStmt.setString("in_DeviceSelection", DeviceSelection);
callStmt.execute();
} catch (SQLException e) {
System.out.println(e.getMessage());
e.printStackTrace();
} finally {
if (dbConn != null) {
dbConn.close();
}
}
}
、私のコードの他の部分は開閉の実際の目的に合わせて、同様に更新されましたMySQLのための適切な接続。あなたは
rs = callStmt.executeQuery(selectQuery);
下のコードで同じStatementオブジェクトを使用していた
のみ最後に、ブロック内のすべての接続。 – iWumbo