Mule数据编织格式：数字

我遇到了一个问题，试图将字符串解析为双倍。这是一个示例代码，它返回的是一个整数而不是类型：double有什么想法吗

{
    "data": "22" as :number { format: "##.##" }
}

---

我认为这更多是为了格式化字符串。对于小数点，请尝试以下操作：

{

    "data": "22" as :number {format: ".00"}

}

---

这个，也只有这个，对我有效

%dw 1.0
%output application/json
---
{
    data: "22" as :number as :string {format: ".00"} as :number
}

格式似乎只在从数字转换为字符串时添加零。 如果“22”已经是一个数字，你就不需要第一个：数字转换

data: 22 as :string {format: ".00"} as :number

后一个数字转换使其以浮点形式输出。否则，您将得到一个字符串，根据主机区域设置进行格式化

小心。当使用

%output text/json

时，在某些情况下，上述代码将生成22.0而不是22.00。

我使用的是：

%output application/json
%type currency = :string { format: "###,##0.00"} 
%function toLocalCurrency (currency) currency replace "." with "#" replace "," with "." replace "#" with ","
---
{
    usCurrencyWithOneDecimal: 900000.1 as :currency,
    brCurrency: toLocalCurrency(900000.1 as :currency),
    usCurrencyWithTwoDecimal: 900000.12 as :currency,
    usCurrencyWithThreeDecimal: 900000.124 as :currency,
    usCurrencyWithThreeDecimalRounding: 900000.125 as :currency,
    usCurrencyZero: 0 as :currency
}

输出为：

{
  "usCurrencyWithOneDecimal": "900,000.10",
  "brCurrency": "900.000,10",
  "usCurrencyWithTwoDecimal": "900,000.12",
  "usCurrencyWithThreeDecimal": "900,000.12",
  "usCurrencyWithThreeDecimalRounding": "900,000.12",
  "usCurrencyZero": "0.00"
}

---

这适用于所有输出类型application/json等，但不适用于application/java。我猜你在用什么？