Question

我没有找到如何在WSO2 BPEL中分配当前日期的方法。我试过这个：

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0">
<![CDATA[$ode:currentEventDateTime]]>
</bpel:from>

它引发了错误：

[UndeclaredVariable]尝试引用未声明的变量＆＃34; currentEventDateTime＆＃34;在部署时

fn:current-dateTime or current-dateTime()

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0">
<![CDATA[fn:current-dateTime]]>
</bpel:from>

故障名称{http：//docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure
故障消息{http：//docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure：R-Value表达式＆＃34; {OXPath10Expression fn：current-dateTime}＆＃34;没有选择任何节点故障数据无可用数据。

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0">
<![CDATA[fn:current-dateTime()]]>
</bpel:from>

提出：

错误{org.wso2.carbon.bpel.ui.fileupload.BPELUploadExecutor} - BPEL流程编译失败。
org.apache.ode.utils.NSContext $ NSContextException：找不到前缀＆＃34; fn＆＃34;的命名空间部署时。

<bpel:from expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0">
<![CDATA[current-dateTime()]]>
</bpel:from>

故障名称{http：//docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure
  故障消息{http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure：在评估＆＃34时发生异常; {OXPath10Expression current-dateTime（）}＆＃34;：没有这样的功能当前，日期时间
  故障数据无可用数据。

Answer 1

我通过使用xsl转换找到了解决方案 BPEL：

package stackoverflow;

import java.util.*;

public class DemoMain
{
    final static int COUNT_COLUMNS =8;

    public static void main(String[] args) throws IllegalFormatException
    {
        StringBuilder[] attributes = new StringBuilder[COUNT_COLUMNS];
        for (int i=0; i< COUNT_COLUMNS; i++)
        {
            attributes[i]=new StringBuilder();
        }

        for (int numArgs=0; numArgs<args.length; numArgs++)
        {
            String[] values = args[numArgs].split(" *, *");
            if (values.length != COUNT_COLUMNS)
            {
                throw new IllegalArgumentException("invalid number of fields, must be "+ COUNT_COLUMNS);
            }

            int numVal=0;
            for (String val : values)
            {
                attributes[numVal].append(numArgs > 0 ? "," : "").append(val.trim());
                numVal++;
            }
        }

        for (StringBuilder att : attributes)
        {
            System.out.println(att);
        }
    }
}

XSL：

<bpel:copy> 
<bpel:from>bpel:doXslTransform("datetime.xsl", $variable.part)</bpel:from>
<bpel:to part="parameters" variable="var"></bpel:to>
</bpel:copy>

如何在WSO2 BPEL中分配当前日期？

1 个答案: