Java MessageFormat.format问题与转义单引号

我想我发现了一只虫子。但不确定在哪里，正在寻找关于最佳修复方法的建议

以下是创建sql视图脚本的代码：

return MessageFormat.format(
            "CREATE VIEW {0} AS " +
            "SELECT T.{1} AS {2}, T.{3} AS {4}, T.{5} AS {6}, " +
            "T.{7} AS {8}, T.{9} AS {10}, " +
            "MAX(CASE WHEN T.{11} = TS.{12} THEN TS.{13} ELSE '''' END) AS {14}, " +
            "MAX(CASE WHEN T.{15} = TS.{16} THEN TS.{17} ELSE '''' END) AS {18}, " +
            "MAX(CASE WHEN T.{19} = TS.{20} THEN TS.{21} ELSE 0 END) AS {22}, " +
            "MAX(CASE WHEN T.{23} = TS.{24} THEN TS.{25} ELSE 0 END) AS {26}, " +
            "MAX(CASE WHEN T.{27} = TS.{28} THEN TS.{29} ELSE '''' END) AS {30}, " +
            "MAX(CASE WHEN T.{31} = TS.{32} THEN TS.{33} ELSE '''' END) AS {34}, " +
            "MAX(CASE WHEN T.{35} = TS.{36} THEN TS.{37} ELSE 0 END) AS {38}, " +
            "MAX(CASE WHEN T.{39} = TS.{40} THEN TS.{41} ELSE 0 END) AS {42}, " +
            "COALESCE(MAX(ABS(TA_Weight.{43})), 0) {44}, " +
            "COALESCE(MAX(ABS(TA_PayBasis.{45})), 0) {46}, " +
            "SUM(COALESCE(ABS(TSA_Miles.{47}), 0)) {48} " +
            "FROM {49} T " +
            "INNER JOIN {50} TS ON T.{51} = TS.{52} " +
            "LEFT OUTER JOIN {53} TA_Weight ON T.{54} = TA_Weight.{55} AND TA_Weight.{56} = ''H:W'' " +
            "LEFT OUTER JOIN {57} TA_PayBasis ON T.{58} = TA_PayBasis.{59} AND TA_PayBasis.{60} = ''H:AGR'' " +
            "LEFT OUTER JOIN {61} TSA_Miles ON TS.{62} = TSA_Miles.{63} AND TS.{64} = TSA_Miles.{65} AND TSA_Miles.{66} = ''D:DD'' " +
            "GROUP BY T.{67}, T.{68}, T.{69}, T.{70}, T.{71}",
            TRIP_VIEW_NAME,
            TRIP_COL_TRIP_ID, TRIP_VIEW_COL_TRIP_ID, TRIP_COL_IS_VIEWED, TRIP_VIEW_COL_IS_VIEWED, TRIP_COL_IS_ACCEPTED, TRIP_VIEW_COL_IS_ACCEPTED,
            TRIP_COL_IS_DECLINED, TRIP_VIEW_COL_IS_DECLINED, TRIP_COL_STATUS, TRIP_VIEW_COL_STATUS,
            TRIP_COL_FIRST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_MUNICIPALITY, TRIP_VIEW_COL_FROM_MUNICIPALITY,
            TRIP_COL_FIRST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_ADMINISTRATIVE_AREA, TRIP_VIEW_COL_FROM_ADMINISTRATIVE_AREA,
            TRIP_COL_FIRST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_SCHEDULED_ARRIVAL_FROM, TRIP_VIEW_COL_PICKUP_DATE,
            TRIP_COL_FIRST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_TIME_ZONE, TRIP_VIEW_COL_PICKUP_TIME_ZONE,
            TRIP_COL_LAST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_MUNICIPALITY, TRIP_VIEW_COL_TO_MUNICIPALITY,
            TRIP_COL_LAST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_ADMINISTRATIVE_AREA, TRIP_VIEW_COL_TO_ADMINISTRATIVE_AREA,
            TRIP_COL_LAST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_SCHEDULED_ARRIVAL_FROM, TRIP_VIEW_COL_DELIVERY_DATE,
            TRIP_COL_FIRST_STOP_NUMBER, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_COL_TIME_ZONE, TRIP_VIEW_COL_DELIVERY_TIME_ZONE,
            TRIP_ATTRIBUTE_COL_VALUE, TRIP_VIEW_COL_WEIGHT,
            TRIP_ATTRIBUTE_COL_VALUE, TRIP_VIEW_COL_PAY_BASIS,
            TRIP_STOP_ATTRIBUTE_COL_VALUE, TRIP_VIEW_COL_MILES,
            TRIP_TABLE_NAME,
            TRIP_STOP_TABLE_NAME, TRIP_COL_TRIP_ID, TRIP_STOP_COL_TRIP_ID,
            TRIP_ATTRIBUTE_TABLE_NAME, TRIP_COL_TRIP_ID, TRIP_ATTRIBUTE_COL_TRIP_ID, TRIP_ATTRIBUTE_COL_NAME,
            TRIP_ATTRIBUTE_TABLE_NAME, TRIP_COL_TRIP_ID, TRIP_ATTRIBUTE_COL_TRIP_ID, TRIP_ATTRIBUTE_COL_NAME,
            TRIP_STOP_ATTRIBUTE_TABLE_NAME, TRIP_STOP_COL_TRIP_ID, TRIP_STOP_ATTRIBUTE_COL_TRIP_ID, TRIP_STOP_COL_STOP_NUMBER, TRIP_STOP_ATTRIBUTE_COL_STOP_NUMBER, TRIP_STOP_ATTRIBUTE_COL_NAME,
            TRIP_COL_TRIP_ID, TRIP_COL_IS_VIEWED, TRIP_COL_IS_ACCEPTED, TRIP_COL_IS_DECLINED, TRIP_COL_STATUS);

您看到了我是如何用双记号转义单记号的，据我所知，结果字符串中的“”应该变成“”

在Android emulator中运行此代码会得到以下字符串：

        CREATE VIEW TripView AS SELECT T.TripId AS TripId, T.IsViewed AS IsViewed, T.IsAccepted AS IsAccepted, T.IsDeclined AS IsDeclined, T.Status AS Status, 
MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.Municipality ELSE '' END) 
    AS FromMunicipality, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.AdministrativeArea ELSE '' END) AS FromAdministrativeArea, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.ScheduledArrivalFrom ELSE 0 END) AS PickupDate, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.TimeZone ELSE 0 END) AS PickupTimeZone, MAX(CASE WHEN T.LastDispatchedStopNumber = TS.StopNumber THEN TS.Municipality ELSE '' END) AS ToMunicipality, MAX(CASE WHEN T.LastDispatchedStopNumber = TS.StopNumber THEN TS.AdministrativeArea ELSE '' END) AS ToAdministrativeArea, MAX(CASE WHEN T.LastDispatchedStopNumber = TS.StopNumber THEN TS.ScheduledArrivalFrom ELSE 0 END) AS DeliveryDate, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.TimeZone ELSE 0 END) AS DeliveryTimeZone, COALESCE(MAX(ABS(TA_Weight.Value)), 0) Weight, COALESCE(MAX(ABS(TA_PayBasis.Value)), 0) PayBasis, SUM(COALESCE(ABS(TSA_Miles.Value), 0)) Miles FROM Trip T INNER JOIN TripStop TS ON T.TripId = TS.TripId LEFT OUTER JOIN TripAttribute TA_Weight ON T.TripId = TA_Weight.TripId AND TA_Weight.Name = 'H:W' LEFT OUTER JOIN TripAttribute TA_PayBasis ON T.TripId = TA_PayBasis.TripId AND TA_PayBasis.Name = 'H:AGR' LEFT OUTER JOIN TripStopAttribute TSA_Miles ON TS.TripId = TSA_Miles.TripId AND TS.StopNumber = TSA_Miles.StopNumber AND TSA_Miles.Name = 'D:DD' GROUP BY T.TripId, T.IsViewed, T.IsAccepted, T.IsDeclined, T.Status

当我在实际设备上运行时，我得到以下信息：

    CREATE VIEW TripView AS SELECT T.TripId AS TripId, T.IsViewed AS IsViewed, T.IsAccepted AS IsAccepted, T.IsDeclined AS IsDeclined, T.Status AS Status, 
MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.Municipality ELSE ''' END) 
AS FromMunicipality, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.AdministrativeArea ELSE ''' END) AS FromAdministrativeArea, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.ScheduledArrivalFrom ELSE 0 END) AS PickupDate, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.TimeZone ELSE 0 END) AS PickupTimeZone, MAX(CASE WHEN T.LastDispatchedStopNumber = TS.StopNumber THEN TS.Municipality ELSE ''' END) AS ToMunicipality, MAX(CASE WHEN T.LastDispatchedStopNumber = TS.StopNumber THEN TS.AdministrativeArea ELSE ''' END) AS ToAdministrativeArea, MAX(CASE WHEN T.LastDispatchedStopNumber = TS.StopNumber THEN TS.ScheduledArrivalFrom ELSE 0 END) AS DeliveryDate, MAX(CASE WHEN T.FirstDispatchedStopNumber = TS.StopNumber THEN TS.TimeZone ELSE 0 END) AS DeliveryTimeZone, COALESCE(MAX(ABS(TA_Weight.Value)), 0) Weight, COALESCE(MAX(ABS(TA_PayBasis.Value)), 0) PayBasis, SUM(COALESCE(ABS(TSA_Miles.Value), 0)) Miles FROM Trip T INNER JOIN TripStop TS ON T.TripId = TS.TripId LEFT OUTER JOIN TripAttribute TA_Weight ON T.TripId = TA_Weight.TripId AND TA_Weight.Name = 'H:W' LEFT OUTER JOIN TripAttribute TA_PayBasis ON T.TripId = TA_PayBasis.TripId AND TA_PayBasis.Name = 'H:AGR' LEFT OUTER JOIN TripStopAttribute TSA_Miles ON TS.TripId = TSA_Miles.TripId AND TS.StopNumber = TSA_Miles.StopNumber AND TSA_Miles.Name = 'D:DD' GROUP BY T.TripId, T.IsViewed, T.IsAccepted, T.IsDeclined, T.Status

---

看起来像个虫子。脚本的第3行显示了差异，“vs”

根据脚本的规则，这显然是错误的。您的模拟器似乎做了正确的事情，但设备上的JRE似乎对

'''''

的解释不正确

另一种表示两个单引号的方法是像这样对它们进行转义：

\'\'\'\'\'\'\'\'\'\'

，这可能会为您的设备的JRE提供足够的信息，您希望将它们分开处理。这可能仍然会导致相同的错误，但值得一试，以防它起作用

我猜它是如何以三个单引号出现的：

• 第一个单引号来自前两个
• 第二单报价来自第二单和第三单
• 第三个单引号来自第三个和第四个单引号

中间的那个是错误的。第二个单引号是在第一次传递时使用的，因此不应被视为另一对引号的一部分

值得向设备上使用的JRE源报告这一点

一个更简单的测试用例是：

System.out.println(MessageFormat.format("Say ''''{0}''''", "hello"));

应该给谁

说“你好”

---

作为输出，但应显示三个单引号，而不是在设备JRE的“hello”前后显示两个单引号。

这是Sprint的三星galaxy，使用了什么JRE？我用我自己已知的字符串替换它，然后使用Java.replace（）来修复它：（您可以使用

System.getProperty（“Java.vendor”）

和

System.getProperty（“Java.version”）