如何从Java类到Java STRUTS2中的另一个类访问STATIC变量？

如何解决如何从Java类到Java STRUTS2中的另一个类访问STATIC变量？

| 我试图从一个Java类到另一个Java类访问STATIC变量，但没有得到该值！ 以下是我的Java类。 静态内容，类别1：

package com.globalProperties;
public class GlobalVariables {

static{
    someFunctionName();
}

    private static String SMTP_SERVER = \"\";
    private static String SMTP_USERNAME = \"\";
    private static String SMTP_PASSWORD = \"\";

    private static void someFunctionName(){
         Connection con = null;
         Statement statement = null;
         ResultSet resultset = null;
         LinkedHashMap<String,String> sysParmHashMap = new LinkedHashMap<String,String>();
             con = DatabaseConnection.getDbConnection();
             statement = con.createStatement();
             String queryStr = \"SELECT * FROM SMTPCONNECTION\";
             resultset = statement.executeQuery(queryStr);
             while(resultset.next()){
                 sysParmHashMap.put(resultset.getString(\"KEY\"),resultset.getString(\"KEY_VALUE\"));
             }

                // First i tried this to set value 
                SMTP_SERVER = sysParmHashMap.get(\"SMTP_SERVER\").trim();
                SMTP_USERNAME = sysParmHashMap.get(\"SMTP_USERNAME\").trim();
                SMTP_PASSWORD = sysParmHashMap.get(\"SMTP_PASSWORD\").trim();

                // Second time,i tried this to set value 
                setSMTP_SERVER(sysParmHashMap.get(\"SMTP_SERVER\").trim());
                setSMTP_USERNAME(sysParmHashMap.get(\"SMTP_USERNAME\").trim());
                setSMTP_PASSWORD(sysParmHashMap.get(\"SMTP_PASSWORD\").trim());


                System.out.println(\"SMTP_SERVER :\" +SMTP_SERVER);
                System.out.println(\"SMTP_USERNAME :\" +SMTP_USERNAME);
                System.out.println(\"SMTP_PASSWORD :\" +SMTP_PASSWORD);
         }

    public static String getSMTP_SERVER() {
        return SMTP_SERVER;
    }

    public static void setSMTP_SERVER(String sMTP_SERVER) {
        SMTP_SERVER = sMTP_SERVER;
    }

    public static String getSMTP_USERNAME() {
        return SMTP_USERNAME;
    }

    public static void setSMTP_USERNAME(String sMTP_USERNAME) {
        SMTP_USERNAME = sMTP_USERNAME;
    }

    public static String getSMTP_PASSWORD() {
        return SMTP_PASSWORD;
    }

    public static void setSMTP_PASSWORD(String sMTP_PASSWORD) {
        SMTP_PASSWORD = sMTP_PASSWORD;
    }

    public static String getGATEWAY_SERVICE_URL() {
        return GATEWAY_SERVICE_URL;
    }

}

在这里我想访问那些静态变量Class 2：

package com.unilog.sendMails;
import com.globalProperties.GlobalVariables;
improt .... some imports ....;

public class sendEmailTo extends ActionSupport implements ServletResponseAware {


    public String MailContact(){

        String result = \"Fail\";

    if(Some condition){
      result = sendingEmail(  --  Parameters  --);
        }



    }

    public String sendingEmail(String toAddress,String fromAddress,String mailSubject,String mailBody){
        String result=\"FAIL\";

        // For Below variable am not getting any value they are Empty but not null
            String smtpHost = GlobalVariables.getSMTP_SERVER();  
            final String smtpUserName = GlobalVariables.getSMTP_USERNAME();
        final String smtpPassword = GlobalVariables.getSMTP_PASSWORD();

    }
}

    

解决方法

        问题已解决，我分配了

VARIABLE =\"\"

（声明时静态变量的空值） 它是 ：

 private static String SMTP_SERVER = \"\";
    private static String SMTP_USERNAME = \"\";
    private static String SMTP_PASSWORD = \"\";

假设是这样的：

 private static String SMTP_SERVER;
    private static String SMTP_USERNAME;
    private static String SMTP_PASSWORD;

现在工作正常…… 谢谢.....