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我使用GWT框架在RPC模式中創建了自己的方法。現在,我需要添加另一種方法。GWT - 在RPC配置中管理布爾方法
所以,我寫了這個代碼RPC的各個部分:
package org.sinfonet.client;
import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
@RemoteServiceRelativePath("gwtservice")
public interface GWTService extends RemoteService {
public String checkLogin(String nickname, String password);
public boolean anotherFunction(String nickname);
}
#########################################################
package org.sinfonet.client;
import com.google.gwt.user.client.rpc.AsyncCallback;
public interface GWTServiceAsync {
public void checkLogin(String nickname, String password, AsyncCallback<String> callback);
public void anotherFunction(String nickname, AsyncCallback<java.lang.Boolean> asyncCallback);
}
#########################################################
package org.sinfonet.server;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import java.util.ArrayList;
import org.sinfonet.client.GWTService;
import org.sinfonet.mgmt.Configuration;
import org.sinfonet.mgmt.Database;
public class GWTServiceImpl extends RemoteServiceServlet implements GWTService {
public String checkLogin(String nickname, String password) {
Database mydb=Configuration.getDatabase();
mydb.connetti();
// faccio md5 ed escape
String log_check_user=nickname;
String log_check_pass=password;
// controllo che l'utente esista
ArrayList<String[]> db_result=null;
db_result=mydb.selectQuery("SELECT nickname FROM users WHERE nickname='"+log_check_user+"' AND password='"+log_check_pass+"'");
if(db_result.size()!=0) {
return "YES";
}
// sconnessione al database
mydb.disconnetti();
return "NO";
}
public boolean anotherFunction(String nickname) {
// somethings others
return true;
}
}
#########################################################
final AsyncCallback<java.lang.Boolean> callCheckLogin = new AsyncCallback<java.lang.Boolean>() {
public void onSuccess(boolean result) {
if(result) {
designLogout(menu_login_label1.getText());
} else {
menu_err.setText("Username e password non validi");
}
}
};
// Listen for the button clicks
menu_login_button.addClickHandler(new ClickHandler(){
public void onClick(ClickEvent event) {
// Make remote call. Control flow will continue immediately and later
// 'callback' will be invoked when the RPC completes.
getService().anotherFunction(menu_login_input1.getText(), callCheckLogin);
}
});
,你可以看到,我添加了anotherFunction()方法(布爾),但Netbeans的對我說,我需要實現所有abracts關於allCheckLogin的方法,但我不會這樣做:)我該如何解決這個問題?
uhm。但如果我改變我的代碼與「公共無效onSuccess(布爾結果)」錯誤消失:) – markzzz 2010-11-17 15:38:11
很好。在所有的時候,我都畏懼了重複的錯誤處理,我很失望,我沒有想到子類化AsyncCallback。 – 2010-11-17 19:42:26