使用 freemarker 模板将字符串转换为 JSON 对象

Question

<#assign loanInformation = '{"8":{"loanId":"8","employeeId":"7","loanType":"1","totalAmount":"100000","installmentAmount":"6666.67","remainingBalance":"93333.33","loanTitle":"ELR - EMP739 Umar Naeem (5/1/2024) (House Loan)"},"9":{"loanId":"9","employeeId":"7","loanType":"2","totalAmount":"100000","installmentAmount":"10000","remainingBalance":"90000.0","loanTitle":"ELR-9 (Car Loan)"}}'>

<#assign loanInfoJason = loanInformation?eval_json>
<#list loanInfoJason as loan>
  <tr class="bb">
    <td align="center" class="br">${loan.loanTitle}</td>
    <td align="center" class="br">${loan.installmentAmount}</td>
    <td align="center">${loan.remainingBalance}</td>
  </tr>
</#list>

这在 freemarker 模板中工作得很好，但是如果

<#assign loanInformation = record.custrecord_dsc_psf_loan_ded_info_json>

出现错误

无法“？eval_json”字符串并出现以下错误： ---begin-message--- 无效的 JSON 关键字：“Lorem”。应该是以下之一：true、false、null。如果它是一个字符串，那么它必须被引用。错误位置：第 1 行，第 1 列：Lorem ipsum dolor sat amet consectetuer ac orci... ^ ---end-message--- 失败的表达式：==> LoanInformation?eval_json [in template "template" at line 290,第 25 列] ---- FTL 堆栈跟踪（“~”表示与嵌套相关）： - 失败于：#assign LoanInfo = LoanInformation... [在模板“template”第 290 行第 5 列]

eval_json 在使用变量时应该能够返回有效的 JSON。

Answer 1

您很可能有一条包含字段

custrecord_dsc_psf_loan_ded_info_json

的记录。 该字段仅包含“lorem ipsum”文本，并且您尝试将其处理为 JSON。当然这是行不通的。

将 JSON 值放入字段中。就像您在模板中硬编码的那样：

{
    "8": {
        "loanId": "8",
        "employeeId": "7",
        "loanType": "1",
        "totalAmount": "100000",
        "installmentAmount": "6666.67",
        "remainingBalance": "93333.33",
        "loanTitle": "ELR - EMP739 Umar Naeem (5/1/2024) (House Loan)"
    },
    "9": {
        "loanId": "9",
        "employeeId": "7",
        "loanType": "2",
        "totalAmount": "100000",
        "installmentAmount": "10000",
        "remainingBalance": "90000.0",
        "loanTitle": "ELR-9 (Car Loan)"
    }
}

而不是

lorem ipsum dolor sit amet