如何将字符串参数传递给JavaScript函数中的Java方法

Question

我无法在JavaScript中调用Java函数。我想，当我将像Var这样的参数传递给字符串方法时，我做错了。请给我你的建议。

function calculateTotalAmount() 
{ 

    var formFldAreaCode = eval("document.AccountsSummaryListing.<%=SWPAppConstants.AREA_CODE%>"); 
    alert("area code "+formFldAreaCode.value); 
    var formFldExchange = eval("document.AccountsSummaryListing.<%=SWPAppConstants.EXCHANGE%>"); 
    alert("formFldExchange "+formFldExchange.value); 
    var formFldConnector = eval("document.AccountsSummaryListing.<%=SWPAppConstants.CONNECTOR%>"); 
    alert("formFldConnector code "+formFldConnector.value); 
    var formFldConnectorSuffix = eval("document.AccountsSummaryListing.<%=SWPAppConstants.CONNECTOR_SUFFIX%>"); 
    alert("formFldConnectorSuffix code "+formFldConnectorSuffix.value); 
//getting error here    
    var installmentAmount = '<%=smPage.getFreeDomTerminationFee(formFldAreaCode.value,formFldExchange.value,"'formFldConnector.value,formFldConnectorSuffix.value)%>'; 

    alert("Alert "+installmentAmount); 
} 

Java方法（） 公共字符串getFreeDomTerminationFee（字符串AREACODE，字符串交换，字符串连接，字符串后缀）抛出异常 {

System.out.println("Ramesh areaCode "+areaCode); 

m_logMgr.logMessage(LogManager.LOG_EVENT,"AccountsSummaryListing "+areaCode+"exchange "+exchange+"connector "+connector+" suffix "+suffix, m_FTCuserContext.getCurrentUserId(), 10, 1);   
/*  Connection origConn = m_bussContext.getConnection(); 
     Connection sosConn = getSOSConnection(); 
     m_bussContext.setConnection(sosConn);*/ 


    FreedomPlnManager frdmPlnMngr = new FreedomPlnManager(this.m_bussContext, this.m_FTCuserContext); 

    String installmentAmount = "0";      

    FreedomPlnDS freedomPlnDS = frdmPlnMngr.getFreedomPlanDetails(areaCode,exchange ,connector ,suffix); 

    //m_bussContext.setConnection(origConn); 

    if(freedomPlnDS!= null){ 
     installmentAmount = freedomPlnDS.getInstallmentAmount(); 
    } 

     m_logMgr.logMessage(LogManager.LOG_EVENT,"AccountsSummaryListing:etfValue = "+installmentAmount, m_FTCuserContext.getCurrentUserId(), 10, 1);  

    return installmentAmount; 
} 

Answer 1

的JavaScript运行在浏览器中的Java在服务器上运行。您需要通过JavaScript进行Ajax调用才能调用Java应用程序。您不能直接从JavaScript直接“调用”Java方法。