开发一个web应用程序并实现一个名为Calculator的类,该类可以计算身体的某些信息,以确定如何集中饮食。
我正在实现这个计算器,但我遇到了一个错误。这是错误;下面是源代码的一个示例。如果你能告诉我我的问题在哪里,我将不胜感激。
错误:
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 83 in the jsp file: /updateProfile.jsp
Calculator cannot be resolved
80: a6 = "checked";
81: }
82:
83: out.println(Calculator.percentBodyFat("f","145","38","38","38","27","27","27",67.0,"6.5"));
84:
85: String theName = request.getParameter("name");
86: if(theName != null)
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:331)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:457)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
源代码:
import java.io.BufferedReader;
package hygeia;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;
public class Calculator {
public static double percentBodyFat(String sex, String w, String h1,
String h2, String h3, String a1, String a2, String a3, double height, String wr)
{
//statements
}
public static double leanBodyMass(double weight, double percentBodyFat)
{
//statements
}
public static double protein(double leanBodyMass, int activLevel)
{
//statements
}
}
它可以编译,但我无法让它使用jsp。看起来应该很简单。
您必须在JSP页面中包含Calculator
类
<%@page import="Calculator"%> <%-- with the complete package of Calculator class--%>
这不编译,包应该在顶部。
您可以通过导入Calculator类来解决问题。
<%@page import="Calculator"%>