JSP中使用JavaBean有关问题
日期：2014-05-18 浏览次数：20764 次
JSP中使用JavaBean问题?
小弟我刚开始使用JSP+JavaBean开发，之前是做纯Java开发的，在使用JavaBean的问题上遇到了问题！
问题是着样的
我的工作空间是K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP
在该空间下有K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes\test用于存放java的class文件
我的环境变量classpath :;K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes
我在K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP目录下建了一个JSP文件TestBean.jsp内容是
<%@ page contentType= "text/html; charset=gb2312 " language= "java " import= "java.sql.* " errorPage= " " %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN " "http://www.w3.org/TR/html4/loose.dtd ">
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> 无标题文档 </title>
</head>
<body>
<center>
<%@ page import= "test.TestBean " %>
<%
TestBean testBean=new TestBean( "This is a test java bean. ");
%>
Java bean name is: <%=testBean.getName()%>
</center>
</body>
</html>
然后我在K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes下建了一个java文件TestBean.java
内容是
package test;
public class TestBean
{
private String name = null;
public TestBean(String strName_p)
{
this.name=strName_p;
}
public void setName(String strName_p)
{
this.name=strName_p;
}
public String getName()
{
return this.name;
}
}
然后我在dos 下 K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes\test目录下输入
javac TestBean.java编译完成后我启动了Tomcat5.0
在输入http://localhost:8080/Hawkins_JSP/TestBean.jsp后结果是
HTTP Status 500 -
--------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
K:\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\Hawkins_005fJSP\TestBean_jsp.java:7: 软件包 test 不存在
import test.TestBean;
^
An error occurred at line: 12 in the jsp file: /Ha
小弟我刚开始使用JSP+JavaBean开发，之前是做纯Java开发的，在使用JavaBean的问题上遇到了问题！
问题是着样的
我的工作空间是K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP
在该空间下有K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes\test用于存放java的class文件
我的环境变量classpath :;K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes
我在K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP目录下建了一个JSP文件TestBean.jsp内容是
<%@ page contentType= "text/html; charset=gb2312 " language= "java " import= "java.sql.* " errorPage= " " %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN " "http://www.w3.org/TR/html4/loose.dtd ">
<html>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<title> 无标题文档 </title>
</head>
<body>
<center>
<%@ page import= "test.TestBean " %>
<%
TestBean testBean=new TestBean( "This is a test java bean. ");
%>
Java bean name is: <%=testBean.getName()%>
</center>
</body>
</html>
然后我在K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes下建了一个java文件TestBean.java
内容是
package test;
public class TestBean
{
private String name = null;
public TestBean(String strName_p)
{
this.name=strName_p;
}
public void setName(String strName_p)
{
this.name=strName_p;
}
public String getName()
{
return this.name;
}
}
然后我在dos 下 K:\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\Hawkins_JSP\WEB-INF\classes\test目录下输入
javac TestBean.java编译完成后我启动了Tomcat5.0
在输入http://localhost:8080/Hawkins_JSP/TestBean.jsp后结果是
HTTP Status 500 -
--------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
K:\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\_\org\apache\jsp\Hawkins_005fJSP\TestBean_jsp.java:7: 软件包 test 不存在
import test.TestBean;
^
An error occurred at line: 12 in the jsp file: /Ha
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