The server encountered an internal error () that prevented it from fulfillin

[大前端圈]

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: An exception occurred processing JSP page /register.jsp at line 9

6: if (request.getParameter("login") != null) {
7: String username = request.getParameter("username");
8: String password = request.getParameter("password");
9: float money=Float.parseFloat(request.getParameter("money"));
10: UsersVo vo = new UsersVo();
11: vo.setUsername(username);
12: vo.setPassword(password);


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:519)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:428)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause

java.lang.NullPointerException
sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:991)
java.lang.Float.parseFloat(Float.java:422)
org.apache.jsp.register_jsp._jspService(register_jsp.java:65)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.32 logs.

[PaulForTheLove]

float money=Float.parseFloat(request.getParameter("money"));
//此处request.getParameter("money") ==null,所以 java.lang.NullPointerException，你 debug看一下是
//不是为空

[feimoyuling]

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: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause

java.lang.NullPointerException
org.apache.jsp.index_jsp._jspService(index_jsp.java:299)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


note The full stack trace of the root cause is available in the Apache Tomcat/6.0.16 logs.

这个怎么解决啊？

[shenggq520]

求解，我也遇到这种问题

[asd134asd1345]

[牛大胆]

register.jsp at line 9 java.lang.NullPointerException， 找关键错误信息， 明显是 Float.parseFloat()的时候报 的错， 你String moneys=request.getParameter("money"); 打印一下moneys 看看 有没有值，

[u010962671]

我也遇到这个问题，我用的是struts2+hibernate做的 jsp项目，你解决这个问题没有，有的话说一声

[yongtaimen]

[suerte_]

引用 7 楼 u010962671 的回复:

我也遇到这个问题，我用的是struts2+hibernate做的 jsp项目，你解决这个问题没有，有的话说一声

解决了么？我也遇到了这个问题，求解啊

[u010962671]

首先用request.getParamseter("")获取String类型的值，然后判断是否为null,如果为null,float.parfloat()会报空指针异常和数据转换异常的，要先判断获取的值是否为null

[baidu_17417699]

求解这个类容

[小小鸟abc]

楼主我已经改了密码和用户名了可是还是出现

求教 求教