Java SimpleScriptContext getBindings()用法及代碼示例

SimpleScriptContext類的getBindings()方法用於返回與此給定範圍相關聯的綁定，該綁定與此ScriptContext中的範圍作為參數傳遞。

用法:

Bindings getBindings(int scope)

參數：此方法接受單個參數範圍，這是此ScriptContext中的範圍。

返回值：此方法返回關聯的Bindings，如果尚未設置，則返回null。

異常：此方法引發以下異常：

IllegalArgumentException：如果在此類型的ScriptContext中沒有為指定的作用域值定義任何綁定，請執行以下操作：

以下示例程序旨在說明SimpleScriptContext.getBindings()方法：
程序1:

// Java program to demonstrate 
// SimpleScriptContext.getBindings() method 
  
import javax.script.Bindings; 
import javax.script.ScriptContext; 
import javax.script.SimpleScriptContext; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create SimpleScriptContext object 
        SimpleScriptContext simple 
            = new SimpleScriptContext(); 
  
        // add some attribute 
        simple.setAttribute( 
            "name1", 
            "Value1", 
            ScriptContext.ENGINE_SCOPE); 
        simple.setAttribute( 
            "name2", 
            "Value2", 
            ScriptContext.ENGINE_SCOPE); 
  
        // get bindings using getBindings() 
        Bindings bindings 
            = simple.getBindings( 
                ScriptContext.ENGINE_SCOPE); 
  
        // print 
        System.out.println("Bindings value for name1:"
                           + bindings.get("name1")); 
        System.out.println("Bindings value for name2:"
                           + bindings.get("name2")); 
    } 
}

輸出：

Bindings value for name1:Value1
Bindings value for name2:Value2

程序2:

// Java program to demonstrate 
// SimpleScriptContext.getBindings() method 
  
import javax.script.Bindings; 
import javax.script.ScriptContext; 
import javax.script.SimpleScriptContext; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create SimpleScriptContext object 
        SimpleScriptContext simple 
            = new SimpleScriptContext(); 
  
        // add some attribute 
        simple.setAttribute( 
            "Team1", 
            "India", 
            ScriptContext.ENGINE_SCOPE); 
        simple.setAttribute( 
            "Team2", 
            "Japan", 
            ScriptContext.ENGINE_SCOPE); 
        simple.setAttribute( 
            "Team3", 
            "Nepal", 
            ScriptContext.ENGINE_SCOPE); 
  
        // get bindings using getBindings() 
        Bindings bindings 
            = simple.getBindings( 
                ScriptContext.ENGINE_SCOPE); 
  
        // print 
        System.out.println("Bindings value for Team1:"
                           + bindings.get("Team1")); 
        System.out.println("Bindings value for Team2:"
                           + bindings.get("Team2")); 
        System.out.println("Bindings value for Team3:"
                           + bindings.get("Team3")); 
    } 
}

輸出：

Bindings value for Team1:India
Bindings value for Team2:Japan
Bindings value for Team3:Nepal

參考：https：//docs.oracle.com/javase/10/docs/api/javax/script/ScriptContext.html#getBindings(int)

相關用法

注：本文由純淨天空篩選整理自AmanSingh2210大神的英文原創作品 SimpleScriptContext getBindings() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。