JSP参数转换出错.

Question

本SQLServer数据库字段是money型.
在JSP页面上,利用
<jsp:useBean id="invoice" scope="request" class="entities.Invoice"/>
<jsp:setProperty name="invoice" property="*"/>
出错.错误代码:
ERROR - Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: jsp.error.beans.property.conversion
at org.apache.jasper.runtime.JspRuntimeLibrary.getValueFromPropertyEditorManager(JspRuntimeLibrary.java:885)
at org.apache.jasper.runtime.JspRuntimeLibrary.convert(JspRuntimeLibrary.java:267)
at org.apache.jasper.runtime.JspRuntimeLibrary.internalIntrospecthelper(JspRuntimeLibrary.java:353)
at org.apache.jasper.runtime.JspRuntimeLibrary.introspecthelper(JspRuntimeLibrary.java:306)
at org.apache.jasper.runtime.JspRuntimeLibrary.introspect(JspRuntimeLibrary.java:284)
at org.apache.jsp.jsp.invoiceMaintenance.modfiyInvoice_jsp._jspService(org.apache.jsp.jsp.invoiceMaintenance.modfiyInvoice_jsp:125)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:831)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:652)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1203)
at java.lang.Thread.run(Unknown Source)
由于Invoice类里,定义了BigDecimal,主要是setBigDecimal(),getBigDecimal()与
<jsp:setProperty name="invoice" property="*"/>
有数据转换的错误.如果在Invoice类里,定义更用float或者double型,由于精度问题,用float和double时有误差.高手帮助...

Answer 1

以下是Bean代码:
package entities;
public class Invoice 
{
   private int voucherID;
   private String voucherNumber;          //存票票号
   private String invoiceNumber;          //发票编号
   private String invoiceDate;            //发票日期
   private String dueDate;                //最后期限
   private String paymentDate;            //支付日期      
   private int paymentTerm;               //付款天数   
   private int paymentGracePeriod;        //宽限天数
   private float invoiceAmount;           //发票总额
   private BigDecimal discountAmount;     //折扣金额
   private float exchangeRate;            //兑换率
   private int invoiceTotalQuantity;      //发票总粒数
   private float invoiceTotalWeight;      //发票总重量
   private String differenceDescription;  //价格差异描述
   private String res;                //发票备注
   private int totalQuantity;
   private float totalWeight;
   private int status;
   private String createdDate;
   private String createdBy;
   
   public CurrencyType currencyType;
   public Buyer buyer;
   public Vendor vendor;
   public Material material;
   public PublicFunc publicFunc;         
   /**
   @roseuid 4233EDE50095
   */
     
   public Invoice() 
   {
     buyer=new Buyer();
     vendor=new Vendor();
     currencyType=new CurrencyType();
     material=new Material();
     publicFunc= new PublicFunc();
   }
   
   public int getVoucherID()
   {
      return voucherID;
   }
   /**
   @return int
   @roseuid 4233D8BA03BE
    */
   public String getVoucherNumber() 
   {
     return voucherNumber;
   }
   
   /**
   @return String
   @roseuid 4233D8C201DF
   */ 
   public String getInvoiceNumber() 
   {
     return invoiceNumber;
   }
   
   /**
   @return java.sql.Date
   @roseuid 4233D8CA019A
    */
   public String getInvoiceDate() 
   {
     return invoiceDate;
   }
      
   /**
   @return java.sql.Date
   @roseuid 4233D8D700F8
    */
   public String getDueDate() 
   {
     return dueDate;
   }
   
   /**
   @return java.sql.Date
   @roseuid 4233D8E00033
    */
   public String getPaymentDate() 
   {
     return paymentDate;
   }
      
   /**
   @return int
   @roseuid 4233D8E60349
    */
   public int getPaymentTerm() 
   {
     return paymentTerm;
   }
   
   /**
   @return int
   @roseuid 4233D8EE021E
    */
   
   public int getPaymentGracePeriod() 
   {
     return paymentGracePeriod;
   }
   
   /**
   @return double
   @roseuid 4233D8FB0281
    */
   public float getInvoiceAmount() 
   {
     return invoiceAmount;
   }
   
   /**
   @return double
   @roseuid 4233D9040234
    */
   public BigDecimal getDiscountAmount() 
   {
     return discountAmount;
   }
      
   /**
   @return double
   @roseuid 4233D9150057
    */
   public float getExchangeRate() 
   {
     return exchangeRate;
   }
   
   public int getInvoiceTotalQuantity()
   {
     return invoiceTotalQuantity;
   }
   
   public float getInvoiceTotalWeight()
   {
    return invoiceTotalWeight;
   }
   
   public int getTotalQuantity()
   {
    return totalQuantity;
   }
   
   public float getTotalWeight()
   {
    return totalWeight;
   }
   /**
   @return String
   @roseuid 4233D92000F3
    */
   public String getDifferenceDescription() 
   {
     return differenceDescription;
   }
   
   /**
   @return String
   @roseuid 4233D93C037F
    */
   public String getRes() 
   {
     return res;
   }
   
   public int getStatus()
   {
     return status;
   }
   
   public String getCreatedBy(){
      return createdBy;
   }
   
   public String getCreatedDate(){
      return createdDate;
   }
   
   public void setVoucherID(int voucherID)
   {
      this.voucherID=voucherID;
   }
   
   
   /**
   @param int invoiceID
   @roseuid 4233D95E0337
    */ 
   public void setVoucherNumber(String voucherNumber) 
   {
     this.voucherNumber=voucherNumber;
   }
      
   /**
   @param invoiceNumber
   @roseuid 4233D96D0375
   */
   public void setInvoiceNumber(String invoiceNumber) 
   {
      this.invoiceNumber=invoiceNumber;
   }
   
   /**
   @param invoiceDate
   @roseuid 4233D9810388
    */
   public void setInvoiceDate(String invoiceDate) 
   {
     this.invoiceDate=invoiceDate;
   }
   
   public void setDueDate(String dueDate)
   {
     this.dueDate=dueDate;
   }
   
   /**
   @param paymentDate
   @roseuid 4233D9900299
   */
   
   public void setPaymentDate(String paymentDate) 
   {
     this.paymentDate= paymentDate;
   }
   
   /**
   @param paymentTerm
   @roseuid 4233D99F00A6
   */
   public void setPaymentTerm(int paymentTerm) 
   {
     this.paymentTerm=paymentTerm;
   }
         
   /**
   @param paymentGracePeriod
   @roseuid 4233D9B303D0
   */
   public void setPaymentGracePeriod(int paymentGracePeriod) 
   {
     this.paymentGracePeriod=paymentGracePeriod;
   }
   
   /**
   @param invoiceAmount
   @roseuid 4233D9D50357
   */
   public void setInvoiceAmount(float invoiceAmount) 
   {
     this.invoiceAmount=invoiceAmount;
   }
   
   /**
   @param discountAmount
   @roseuid 4233DAB10349
   */
   public void setDiscountAmount(BigDecimal discountAmount) 
   {
     this.discountAmount=discountAmount;
   }
   
   /**
   @param exchangeRate
   @roseuid 4233D9F101BC
   */
   public void setExchangeRate(float exchangeRate) 
   {
     this.exchangeRate=exchangeRate;
   }
   
   public void setInvoiceTotalQuantity(int invoiceTotalQuantity)
   {
     this.invoiceTotalQuantity=invoiceTotalQuantity;
   }
     
   public void setInvoiceTotalWeight(float invoiceTotalWeight)
   {
     this.invoiceTotalWeight=invoiceTotalWeight;
   }
   
   /**
   @param differenceDescription
   @roseuid 4233DA0C0233
   */
   public void setDifferenceDescription(String differenceDescription) 
   {
     this.differenceDescription=differenceDescription;
   }
      
   /**
   @param res
   @roseuid 4233DA230381
   */
   
   public void setRes(String res) 
   {
     this.res=res;
   }
   
   public void setStatus(int status)
   {
     this.status=status;
   }
   
   
   public void setTotalQuantity(int totalQuantity)
   {
    this.totalQuantity=totalQuantity;
   }
   
   public void setTotalWeight(float totalWeight)
   {
    this.totalWeight=totalWeight;
   }
   
   public void setCreatedBy(String createdBy){
     this.createdBy=createdBy;
   }
   
   public void setCreatedDate(String createdDate){
     this.createdDate=createdDate;
   }
  public int updateInvoice(int userID)
  {
   //System.out.print(userID);
   dbAccess dba=new dbAccess();
   Date myDate = new Date();
SimpleDateFormat bartDateFormat = new SimpleDateFormat("yyyy-MM-dd");

   String sql=
     " update invoice set invoice_Number='"+getInvoiceNumber()+
     "',Currency_type_id="+currencyType.getCurrencyTypeID()+
     ",Mt_ID="+material.getMtID()+
     ",Vendor_ID="+vendor.getVendorID()+",Buyer_ID="+buyer.getStaffID()+
     ",invoice_date='"+getInvoiceDate()+"',due_date='"+getDueDate()+
     "',Payment_date='"+getPaymentDate()+"',Payment_term="+getPaymentTerm()+
     ",Payment_grace_period="+getPaymentGracePeriod()+",invoice_amount="+getInvoiceAmount()+
     ",Discount_amount="+getDiscountAmount()+",Exchange_Rate="+getExchangeRate()+
     ",Res='"+getRes()+"',total_Quantity="+getTotalQuantity()+
     ",total_Weight="+getTotalWeight()+",created_by="+userID+
     ",created_date='"+bartDateFormat.format(myDate)+"' where (voucher_Number='"+getVoucherNumber()+"')" +
     " and (Status=0) " ;
     
     System.out.print(sql);
   return dba.execute(sql);
  }
}
Bean的discountAmount变量定义成BigDecimal型,导致JSP的内部getX(),setX(),提示Bean属性转换出错.