java.lang.ArithmeticException: Division undefined

原代码：

BigDecimal htje;
BigDecimal zgcghtje;
BigDecimal bdTemp = BigDecimal.ZERO;
double dRate;
for(int i=0; i<iLength; i++){
htje = contractByTradeList.get(i).getHtje();
zgcghtje = contractByTradeList.get(i).getZgcghtje();
if(htje != BigDecimal.ZERO){
bdTemp = zgcghtje.divide(htje);
bdTemp = bdTemp.multiply(BigDecimal.valueOf(100L));
dRate =bdTemp.doubleValue();
contractByTradeList.get(i).setZgcgl(dRate);
} else{
contractByTradeList.get(i).setZgcgl(0.0);
}
}

报错信息：

- Exception occurred during processing request: Division undefined
java.lang.ArithmeticException: Division undefined
at java.math.BigDecimal.divide(BigDecimal.java:1486)
at com.comtop.csgbi.jj.scfx.employeeholdstock.action.EmployeeHoldStockAction.setZGCGL(EmployeeHoldStockAction.java:235)
at com.comtop.csgbi.jj.scfx.employeeholdstock.action.EmployeeHoldStockAction.readChart1Data(EmployeeHoldStockAction.java:11
2)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)

错误指向bdTemp = zgcghtje.divide(htje)一行，

BigDecimal divide(BigDecimal divisor)

返回一个BigDecimal，其值为(this / divisor)，其首选标度为(this.scale() - divisor.scale())。

BigDecimal divide(BigDecimal
divisor, int scale, int roundingMode)

返回一个BigDecimal，其值为(this / divisor)，其标度为指定标度。

报错分析： 代码中使用的是divide(arg0)方法，故divide(htje)标度为两变量的scale值之差，zgcghtje的scale值为0，htje的scale值为2（可通过.scale()方法查看），故divide(htje)标度为-2，小于0，报错。

解决办法：divide行代码修改为bdTemp = zgcghtje.divide(htje, 4, RoundingMode.HALF_UP);

修改后运行，报除0错误，分析知0值判断处的代码有误，修改为if(htje.intValue() != 0)，运行，测试通过。