java applet中的参数传递

kk19860205 2008-11-07 03:59:58

import java.applet.*;
import java.awt.*;
public class Appletparam extends Applet
{
private String name;
private String sex;
private int num;
private int age;
public void init()
{
setBackground(Color.gray);
name=this.getParameter("myName:");
sex=this.getParameter("mySex");
num=Integer.parseInt(this.getParameter("myNum"));
age=Integer.parseInt(this.getParameter("myAge"));
}
public void paint(Graphics g)
{
g.setColor(Color.blue);
g.drawString("my name is :"+name, 10, 20);
g.drawString("my sex is :"+sex, 10, 40);
g.drawString("my num is :"+num, 10,60);
g.drawString("my age is :"+age, 10, 80);
}
}

我在写了个
<html>
<body>
<Applet code="Appletparam.class" height=400 width=400>
<param name=myName value="kaka">
<param sex=mySex value="mail">
<param num=myNum value=200630170>
<param age=myAge value=22>
</Applet>
</body>
</html>
运行结果是 Applet出错

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黑夜愁客 2008-11-08

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由于不能修改前面的帖子：
前面执行的发现 name:null;

import java.applet.*;

import java.awt.*;

public class Appletparam extends Applet

{

private String name;

private String sex;

private int num;

private int age;

public void init()

{

setBackground(Color.gray);

name=getParameter("myName");

sex=getParameter("mySex");

num=Integer.parseInt(getParameter("myNum"));

age=Integer.parseInt(getParameter("myAge"));

}

public void  paint(Graphics g)

{

g.setColor(Color.blue);

g.drawString("my name is :"+name, 10, 20);

g.drawString("my sex is :"+sex, 10, 40);

g.drawString("my num is :"+num, 10,60);

g.drawString("my age is :"+age, 10, 80);

}

}

这个应该没有问题了~ html不变

<html>

<body>

<Applet code="Appletparam.class"  height=400 width=400>

<param name=myName value="kaka"> 

<param name=mySex value="mail">

<param name=myNum value=200630170>

<param name=myAge value=22>

</Applet>

</body>

</html>

黑夜愁客 2008-11-08

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name=getParameter("myName");//这里后面没有冒号与html参数对应
还有html中：设置传递参数语法为：

<param name=... value=...> 标记需要名称属性。

<param name=... value=...> 标记需要名称属性。

<param name=... value=...> 标记需要名称属性。

所以对应的应该为：

<param name=myName value="kaka">

<param name=mySex value="mail">

<param name=myNum value=200630170>

<param name=myAge value=22>

所以你执行错误的时候应该有提示~ 自己检查下就好了

黑夜愁客 2008-11-08

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import java.applet.*;

import java.awt.*;

public class Appletparam extends Applet

{

private String name;

private String sex;

private int num;

private int age;

public void init()

{

setBackground(Color.gray);

name=getParameter("myName");

sex=getParameter("mySex");

num=Integer.parseInt(getParameter("myNum"));

age=Integer.parseInt(getParameter("myAge"));

}

public void  paint(Graphics g)

{

g.setColor(Color.blue);

g.drawString("my name is :"+name, 10, 20);

g.drawString("my sex is :"+sex, 10, 40);

g.drawString("my num is :"+num, 10,60);

g.drawString("my age is :"+age, 10, 80);

}

}

<html>

<body>

<Applet code="Appletparam.class"  height=400 width=400>

<param name=myName value="kaka"> 

<param name=mySex value="mail">

<param name=myNum value=200630170>

<param name=myAge value=22>

</Applet>

</body>

</html>