Question

我在我的控制器类中使用groovy编写了这个TwiML

"""<?xml version="1.0" encoding="UTF-8"?>
  <Response>
    <Say voice="alice">Dear customer! This  is  an automated call from X_Y_Z.com to intimate  you that the  fare for  your recently  booked  trip from  ${from},to ${to} has increased by,${fare_Difference}\$ and now the total fare is,${totalFare}\$.</Say>
    <Pause length="1"/>
    <Gather num Digits="1" action="/notify/phone/selection/${phone_Number}/${from}/${to}/${fare_Difference}/${total_Fare}" method="POST" timeout="20" >
        <Say voice="Alice" >To accept the increased fare press 1. To talk to our travel agent press 2. To repeat press 3.</Say><Pause length="3"/>
    </Gather>
  </Response>"""

现在，我的团队负责人已经要求我将TwiML移动到数据库。

这里的问题是我读它的时候从数据库它返回java.lang.String（我们在DAO层使用hibernate），这是导致问题，因为它没有评估嵌入值

而不是替换"${from}"的值作为"New York"，它正在对此进行任何操作，并将其保留为${from}。

我怎样才能做到这一点？

我尝试将其转换为GString，但无法实现。

非常感谢任何帮助。

Answer 1

这是已知的issue，尚未修复。解决方法是使用GroovyShell来计算字符串表达式或使用GStringTemplateEngine。使用这两种方法的示例代码：

String str = '''
<?xml version="1.0" encoding="UTF-8"?>
  <Response>
    <Say voice="alice">Dear customer! This  is  an automated call from X_Y_Z.com to intimate  you that the  fare for  your recently  booked  trip from  ${from},to ${to} has increased by,${fare_Difference}\\$ and now the total fare is,${totalFare}\\$.</Say>
    <Pause length="1"/>
    <Gather num Digits="1" action="/notify/phone/selection/${phone_Number}/${from}/${to}/${fare_Difference}/${total_Fare}" method="POST" timeout="20" >
        <Say voice="Alice" >To accept the increased fare press 1. To talk to our travel agent press 2. To repeat press 3.</Say><Pause length="3"/>
    </Gather>
  </Response>
'''


Map bindings = [from: 'Delhi', to: 'Mumbai', fare_Difference: '789', totalFare: '4567', phone_Number: '9876543210', total_Fare: '4567']

println (new GroovyShell(new Binding(bindings)).evaluate ('"""' + str + '"""'))

println new groovy.text.GStringTemplateEngine().createTemplate(str).make(bindings).writeTo(new StringWriter()).toString()

这里需要注意的一件事是，如果你想跳过一个美元符号，那么你可能需要使用双反斜杠（ ${fare_Difference}\\$ ）来逃避它。

每种情况下的输出都是：

<?xml version="1.0" encoding="UTF-8"?>
  <Response>
    <Say voice="alice">Dear customer! This  is  an automated call from X_Y_Z.com to intimate  you that the  fare for  your recently  booked  trip from  Delhi,to Mumbai has increased by,789$ and now the total fare is,4567$.</Say>
    <Pause length="1"/>
    <Gather num Digits="1" action="/notify/phone/selection/9876543210/Delhi/Mumbai/789/4567" method="POST" timeout="20" >
        <Say voice="Alice" >To accept the increased fare press 1. To talk to our travel agent press 2. To repeat press 3.</Say><Pause length="3"/>
    </Gather>
  </Response>

将String解析为GString时出错

1 个答案: