[英]Integer - String conversion issue in Java
What is the best way to convert String to Integer.将字符串转换为整数的最佳方法是什么。
params.get("contractPriceId");
here I am getting Exception cannot cast Integer to String...在这里我得到 Exception cannot cast Integer to String ...
public List<ContractPriceDetailVO> getContractPriceDetails(
Map<String, String> params) throws DAOException {
// Get the request object
HttpServletRequest request = FlexContext.getHttpRequest();
// Get the AppContext object
AppContext ac = SessionUtils.getAppContext(request);
SimpleDateFormat sdf = new SimpleDateFormat(ac.getDateFormat());
List<Object[]> resultList = new ArrayList<Object[]>();
if (params.get("specId") != null && params.get("specId").trim() != ""
&& params.get("effDate") != null
&& params.get("effDate").trim() != null)
resultList = contractPriceEJBService.getContractPriceDetails(ac,
params);
String contractPriceId = null;
if (params.get("contractPriceId") != null){
try{
contractPriceId = params.get("contractPriceId");
}
catch (Exception e){
logger.error("Exception in getting contractPriceId "+e.getMessage());
}
}
else{
contractPriceId = null;
}
Which exception are you getting ?你得到哪个例外?
Normally we use,通常我们使用,
int price = Integer.parseInt("7");
This returns the int value of string.这将返回字符串的 int 值。
Please put the exception and error in the question so we can do more analysis of issue.请将异常和错误放在问题中,以便我们对问题进行更多分析。
像这样改变它,它应该可以工作
contractPriceId = params.get("contractPriceId") +"";
From Integer to String, String.valueOf(47).从整数到字符串,String.valueOf(47)。
From String to Integer, Integer.parseInt("47").从字符串到整数,Integer.parseInt("47")。
To avoid the exception, try String.valueOf(params.get("contractPriceId")).为避免异常,请尝试 String.valueOf(params.get("contractPriceId"))。
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