接口 - Get - 根据考试id获取考试基础信息 (考试预览)

{
    "code": 422,
    "exceptionCode": "00000000",
    "msg": "The current account type is not allowed to participate in the exam",
    "data": {
        "classLoaderName": "app",
        "moduleName": null,
        "moduleVersion": null,
        "methodName": "getExamPreview",
        "fileName": "ExamServiceImpl.java",
        "lineNumber": 151,
        "nativeMethod": false,
        "className": "com.dahuatech.overseastraining.service.impl.ExamServiceImpl"
    },
    "successful": false
}