FCI是Lotus Forms提供的一种扩展机制，通过这种机制能够扩展Forms Viewer和Forms Server的能力。
前一段时间有个合作伙伴问我Lotus Forms能不能支持将数字货币例如[b]￥12,344,325.00[/b]自动转换成[b]壹仟贰佰叁拾肆万肆仟叁佰贰拾伍圆整[/b]。这两天抽时间采用FCI写了一个例子，发布出来给大家参考。其中转换的算法不要问我，我也是从网上找的。
package com.ibm.eform;import com.PureEdge.error.UWIException;import com.PureEdge.ifx.Extension;import com.PureEdge.ifx.ExtensionImplBase;import com.PureEdge.ifx.IFX;public class FCIExtension extends ExtensionImplBase implements Extension { public void extensionInit(IFX ifxMan) throws UWIException { new MoneyConvertorFunctionCall(ifxMan); }}
package com.ibm.eform;import java.util.regex.Matcher;import java.util.regex.Pattern;import com.PureEdge.IFSSingleton;import com.PureEdge.IFSUserDataHolder;import com.PureEdge.ShortHolder;import com.PureEdge.ShortListHolder;import com.PureEdge.StringHolder;import com.PureEdge.StringListHolder;import com.PureEdge.error.UWIException;import com.PureEdge.ifx.IFX;import com.PureEdge.xfdl.FormNodeP;import com.PureEdge.xfdl.FunctionCall;import com.PureEdge.xfdl.FunctionCallImplBase;import com.PureEdge.xfdl.FunctionCallManager;public class MoneyConvertorFunctionCall extends FunctionCallImplBase implements FunctionCall{ private final String[] strArray1 = {"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"}; private final String[][] strArray2 = {{"仟","佰","拾","亿"},{"仟","佰","拾","万"},{"仟","佰","拾","圆"}}; private final String[] strArray3 = {"角","分"}; public static final int CONVERTMONEY = 1000; /** * @param args */ public MoneyConvertorFunctionCall(IFX ifxMan) throws UWIException { FunctionCallManager theFCM; if ((theFCM = IFSSingleton.getFunctionCallManager()) == null) throw new UWIException("Needed Function Call Manager"); ifxMan.registerInterface(this, FunctionCall.FUNCTIONCALL_INTERFACE_NAME, FunctionCall.FUNCTIONCALL_CURRENT_VERSION, FunctionCall.FUNCTIONCALL_MIN_VERSION_SUPPORTED, 0x01000301, 0, null, theFCM.getDefaultListener( )); theFCM.registerFunctionCall(this, "convert_package", "convertMoney", MoneyConvertorFunctionCall.CONVERTMONEY, FunctionCall.FCI_FOLLOWS_STRICT_CALLING_PARAMETERS, "S", 0x01000301, "Converts a money to Chinese style"); } private String preProcessString(String str) { // str = NumberFormat.getCurrencyInstance().format(Double.valueOf(str)).toString(); Pattern pattern = Pattern.compile(",|￥"); Matcher mat = pattern.matcher(str); return mat.replaceAll(""); } private String renderCurrency(String str) { str = this.preProcessString(str); System.out.println(str); // return String.valueOf(str.indexOf(".")); if(str.indexOf(".") != -1) { String str2 = str.substring(0,str.indexOf(".")); //Integer part of str String str3 = str.substring(str.indexOf(".")+1,str.length()); //Decimal part of str StringBuffer buffer = new StringBuffer(100); //Stringbuffer contains currency string processIntegerPart(str2, buffer); processDecimalPart(str3, buffer); return (buffer.toString()); } return ""; } private void processIntegerPart(String str2, StringBuffer buffer) { int sectionnumb = getStringSectionNumber(str2); for(int i=0;i<sectionnumb;i++){ String tmp = getIntegerSubPart(str2, sectionnumb, i); if(Integer.parseInt(tmp) == 0){ if(i == (sectionnumb - 1)){ if(buffer.charAt(buffer.length() - 1) == '零') buffer.deleteCharAt(buffer.length() - 1); buffer.append('圆'); continue; } else{ if(buffer.charAt(buffer.length() - 1) == '零') buffer.deleteCharAt(buffer.length() - 1); else buffer.append(strArray1[0]); continue; } } int intTmp = 0; for(int j=0;j<tmp.length();j++){ char c = tmp.charAt(j); if(j == 0){ if(c == '0'){ if(i>0&&buffer.charAt(buffer.length()-1) == '零') continue; else buffer.append(strArray1[0]); } else{ intTmp = Integer.parseInt(""+c); buffer.append(strArray1[intTmp]).append(strArray2[3-sectionnumb+i][4-tmp.length()+j]); } } else if(j!=0&&j<tmp.length()-1){ if(c=='0'){ if(tmp.charAt(j-1)=='0') continue; else buffer.append(strArray1[0]); } else{ intTmp = Integer.parseInt(""+c); buffer.append(strArray1[intTmp]).append(strArray2[3-sectionnumb+i][4-tmp.length()+j]); } } else{ if(c=='0'){ if(tmp.charAt(j-1)=='0'){ buffer.deleteCharAt(buffer.length()-1); buffer.append(strArray2[3-sectionnumb+i][4-tmp.length()+j]); } else buffer.append(strArray2[3-sectionnumb+i][4-tmp.length()+j]); } else{ intTmp = Integer.parseInt(""+c); buffer.append(strArray1[intTmp]).append(strArray2[3-sectionnumb+i][4-tmp.length()+j]); } } } } } private String getIntegerSubPart(String str2, int sectionnumb, int i) { String tmp = ""; if(i == 0) tmp = str2.substring(0,str2.length() - (sectionnumb - 1)*4); else if(sectionnumb > 0) tmp = str2.substring(str2.length()-(sectionnumb-i)*4,str2.length()-(sectionnumb-i-1)*4); return tmp; } private void processDecimalPart(String str3, StringBuffer buffer) { if("00".equals(str3)) buffer.append("整"); else for(int i=0;i<2;i++){ char c = str3.charAt(i) ; int intTmp = Integer.parseInt(""+c); buffer.append(strArray1[intTmp]).append(strArray3[i]); } } private int getStringSectionNumber(String str2) { int intTmp = str2.length()%4; int k = 0; //k: parts of str which divided by 4 if(intTmp == 0) k = str2.length()/4; else k = (int)(str2.length()/4+1); return k; } public void evaluate(String arg0, String arg1, int theFunctionID, int arg3, short theCommand, FormNodeP arg5, FormNodeP arg6, IFSUserDataHolder arg7, IFSUserDataHolder arg8, FormNodeP[] theArgList, FormNodeP theResult) throws UWIException { String result = renderCurrency(theArgList[0].getLiteralEx(null)); theResult.setLiteralEx(null, result); } public void help(String arg0, String arg1, int arg2, IFSUserDataHolder arg3, StringHolder arg4, StringHolder arg5, StringHolder arg6, StringListHolder arg7, StringListHolder arg8, ShortListHolder arg9, StringHolder arg10, ShortHolder arg11) throws UWIException { // TODO Auto-generated method stub } }
Manifest-Version: 1.0Name: com/ibm/eform/FCIExtension.classIFS-Extension: True
需要注意的是这个代码需要使用jdk 1.4编译，编译完成后打包为jar包，使用MANIFEST.MF进行描述。
打包完成后可以将jar包拷贝到viewer安装目录下的extension目录下，或者直接通过jar附件的方式附加在表单中。
几点需要注意的：
1.MANIFEST.MF文件每行的冒号后需要有一个空格
2.MANIFEST.MF文件最后一行下应该有一个空行
3.
theFCM.registerFunctionCall(this, "convert_package", "convertMoney", MoneyConvertorFunctionCall.CONVERTMONEY, FunctionCall.FCI_FOLLOWS_STRICT_CALLING_PARAMETERS, "S", 0x01000301, "Converts a money to Chinese style");
convert_package命名需要注意有一个下横线
相关资源：FCI全新12mm插入式连接器可提供296个信号通道
