OK I read and now I think it's better to use a filter: have you got some sites to suggest me with filter examples? I would appreciate it, thank you
On Aug 4, 4:35 pm, Juan Pablo Gardella <[email protected]> wrote: > Its best do the login in a filter. If you do the login in a filter always > execute before servlets. > > If you want use a servlet to do login and have other servlet with similar > url pattern read > this<http://www.roguewave.com/portals/0/products/hydraexpress/docs/4.6.0/h...>. > With filters you can explicity the order of execution, with servlet no (is > not define in the specification, so is the serlvet container decide, > unpredictable). > > Juan > > 2011/8/4 Luca Meloni <[email protected]> > > > > > > > > > I have two servlets in my project: > > - The login servlet tooks the username and the password, checks if > > user data is correct and eventually returns the name of the related > > database; > > - The debug servlet for now can only output a string. > > In MainEntryPoint I call the login servlet before the debug servlet, > > but I get an output that indicates that the debug servlet is called > > before the login servlet; this is the code snippet: > > > logInService.logIn(userNameTextBox.getText(), > > passWordTextBox.getText(), new AsyncCallback<String>() { > > > @Override > > public void onFailure(Throwable caught) { > > Window.alert("Log in failed!"); > > } > > > @Override > > public void onSuccess(String result) { > > dataBaseString = result; > > } > > }); > > > deBugService.outPut("2) DataBase: " + > > dataBaseString, new AsyncCallback<Void>() { > > > public void onFailure(Throwable caught) { > > } > > > public void onSuccess(Void result) { > > } > > }); > > > And this is the related output: > > > 2) DataBase: null > > 1) DataBase: dataBaseName > > > On Aug 4, 4:00 pm, Juan Pablo Gardella <[email protected]> > > wrote: > > > "Is it necessary to include also Hibernate > > > Validator?" No exactly hibernate validator, some jsr303 implementation. I > > > think is necesary. > > > > "I tried to run again the project but the servlets were not > > > executed in the correct order" > > > > I'm blind. Can you explain a little more your problem? > > > > Juan > > > > 2011/8/4 Apocalypto <[email protected]> > > > > > Thanks for the reply, I included "validation-api-1.0.0.GA.jar" and > > > > "validation-api-1.0.0.GA-sources.jar" to project libraries and the > > > > errors were solved. Is it necessary to include also Hibernate > > > > Validator? I tried to run again the project but the servlets were not > > > > executed in the correct order > > > > > On Aug 4, 1:48 pm, Juan Pablo Gardella <[email protected]> > > > > wrote: > > > > > Its a classpath issue: > > > > > > [ERROR] Line 97: ConstraintViolation cannot be resolved to a > > > > > type > > > > > > Add the javax.validation > > > > > jar< > > > >http://mvnrepository.com/artifact/javax.validation/validation-api/1.0.. > > .> > > > > > (jsr303) > > > > > and some implementation< > > > >http://stackoverflow.com/questions/1384968/is-there-an-implementation.. > > .> > > > > > . > > > > > > Juan > > > > > > 2011/8/3 Apocalypto <[email protected]> > > > > > > > Hello GWT world, I'm a student who is trying to learn how to > > develop > > > > > > with GWT framework. I already know well Java language but I'm stuck > > > > > > with my first application: it's a simple log in interface which > > stores > > > > > > user data into cookies, but I can't understand why it doesn't work > > > > > > properly. > > > > > > > MainEntryPoint > > > > > > > private GWTLogInServiceAsync logInService = > > > > > > GWT.create(GWTLogInService.class); > > > > > > private GWTDeBugServiceAsync deBugService = > > > > > > GWT.create(GWTDeBugService.class); > > > > > > private String dataBaseString; > > > > > > ... > > > > > > logInButton.addClickHandler(new ClickHandler() { > > > > > > > public void onClick(ClickEvent event) { > > > > > > dataBaseString = null; > > > > > > > logInService.logIn(userNameTextBox.getText(), > > > > > > passWordTextBox.getText(), new AsyncCallback<String>() { > > > > > > > @Override > > > > > > public void onFailure(Throwable caught) { > > > > > > Window.alert("Log in failed!"); > > > > > > } > > > > > > > @Override > > > > > > public void onSuccess(String result) { > > > > > > dataBaseString = result; > > > > > > } > > > > > > }); > > > > > > > deBugService.outPut("2) DataBase: " + > > > > > > dataBaseString, new AsyncCallback<Void>() { > > > > > > > public void onFailure(Throwable caught) { > > > > > > } > > > > > > > public void onSuccess(Void result) { > > > > > > } > > > > > > }); > > > > > > > if (dataBaseString != null) { > > > > > > logIn(userNameTextBox.getText(), > > > > > > dataBaseString); > > > > > > } > > > > > > } > > > > > > }); > > > > > > ... > > > > > > private void logIn(String userName, String dataBase) { > > > > > > Cookies.setCookie("userName", userName); > > > > > > Cookies.setCookie("dataBase", dataBase); > > > > > > > Location.reload(); > > > > > > } > > > > > > > GWTLogInServiceImpl > > > > > > > public String logIn(String userName, String passWord) { > > > > > > String dataBase = null; > > > > > > > try { > > > > > > Class.forName("org.postgresql.Driver"); > > > > > > > Connection connection = > > > > > > DriverManager.getConnection("jdbc:postgresql://localhost:5432/User > > > > > > DataBase", postGreSQLUserName, postGreSQLPassWord); > > > > > > > String query = "SELECT \"DataBase\" FROM \"User\" WHERE > > > > > > \"Name\" = '" + userName + "' AND \"PassWord\" = '" + passWord + > > "'"; > > > > > > > ResultSet resultSet = > > > > > > connection.createStatement().executeQuery(query); > > > > > > > if (resultSet.next()) { > > > > > > dataBase = resultSet.getString("DataBase"); > > > > > > } > > > > > > } catch (Exception exception) { > > > > > > exception.printStackTrace(); > > > > > > } > > > > > > > System.out.println("1) DataBase: " + dataBase); > > > > > > > return dataBase; > > > > > > } > > > > > > > GWTDeBugServiceImpl > > > > > > > public void outPut(String string) { > > > > > > System.out.println(string); > > > > > > } > > > > > > > I get the following output: > > > > > > 2) DataBase: null > > > > > > 1) DataBase: dataBaseName > > > > > > > Why does it execute GWTDeBugService before GWTLogInService? I'm > > using > > > > > > NetBeans 6.9.1 with the latest GWT framework and GWT4NB plugin. > > > > > > In addition, during compilation I get the following errors: > > > > > > Validating newly compiled units > > > > > > [ERROR] Errors in 'jar:file:/{projectFolder}/lib/GWT2.3.0/gwt- > > > > > > user.jar!/com/google/gwt/editor/client/EditorDriver.java' > > > > > > [ERROR] Line 20: The import > > > > > > javax.validation.ConstraintViolation cannot be resolved > > > > > > [ERROR] Line 97: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Errors in 'jar:file:/{projectFolder}/lib/GWT2.3.0/gwt- > > > > > > user.jar!/com/google/gwt/editor/client/impl/ > > > > > > AbstractSimpleBeanEditorDriver.java' > > > > > > [ERROR] Line 28: Name clash: The method > > > > > > setConstraintViolations(Iterable<ConstraintViolation<?>>) of type > > > > > > BaseEditorDriver<T,E> has the same erasure as > > > > > > setConstraintViolations(Iterable<ConstraintViolation<?>>) of type > > > > > > EditorDriver<T> but does not override it > > > > > > [ERROR] Errors in 'jar:file:/{projectFolder}/lib/GWT2.3.0/gwt- > > > > > > user.jar!/com/google/gwt/editor/client/impl/BaseEditorDriver.java' > > > > > > [ERROR] Line 31: The import > > > > > > javax.validation.ConstraintViolation cannot be resolved > > > > > > [ERROR] Line 67: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Errors in 'jar:file:/{projectFolder}/lib/GWT2.3.0/gwt- > > > > > > user.jar!/com/google/gwt/editor/client/impl/SimpleViolation.java' > > > > > > [ERROR] Line 25: The import > > > > > > javax.validation.ConstraintViolation cannot be resolved > > > > > > [ERROR] Line 40: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Line 43: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Line 44: Missing code implementation in the > > compiler > > > > > > [ERROR] Line 49: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Line 49: Missing code implementation in the > > compiler > > > > > > [ERROR] Line 70: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Line 72: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Line 73: ConstraintViolation<?> cannot be resolved > > to > > > > > > a type > > > > > > [ERROR] Line 77: ConstraintViolation<capture#2-of ?> cannot > > > > > > be resolved to a type > > > > > > [ERROR] Line 81: ConstraintViolation<capture#3-of ?> cannot > > > > > > be resolved to a type > > > > > > [ERROR] Line 89: ConstraintViolation<capture#4-of ?> cannot > > > > > > be resolved to a type > > > > > > [ERROR] Line 93: ConstraintViolation<capture#5-of ?> cannot > > > > > > be resolved to a type > > > > > > [ERROR] Line 98: ConstraintViolation cannot be resolved to > > a > > > > > > type > > > > > > [ERROR] Errors in > > ... > > read more » -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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