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怎么用java实现html代码
ava要运行html代码，需要运行在服务器端，也就是servlet容器中，经过容器编译解析，返回html静态内容，示例如下：
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在servlet里面写就可以了
引入一系列包
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
public class Servlet1 extends HttpServlet {
public void doGet(ServletRequest req,ServletResponse res)throws ServletException, IOException{try{PrintWriter pw=res.getWriter();//在浏览器输出需要
pw.println("scriptscript");}catch(exception e){="" e.printstacktrace();="" 为发现调试错误}}}=""
利用java编程编写代码，实现如下功能：
package example;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
public class demo extends JFrame{
private JMenuBar menu = new JMenuBar();
private JPanel contentPane = new JPanel();
public demo()
{
setTitle("compiler");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setJMenuBar(menu);
//JMenu correct = new JMenu("正确用例");
//JMenu wrong = new JMenu("错误用例");
////JMenuItem WP = wrong.add("语法错误");
//JMenuItem WL = wrong.add("词法错误");
JMenu edit = new JMenu("编辑");
JMenu help = new JMenu("帮助");
JMenu document = new JMenu("文件");
JMenuItem copy = edit.add("复制");
JMenu color = new JMenu("颜色");
JMenuItem p = color.add("前景色");
p.addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null,
"该项目正在建设中", "信息",
JOptionPane.INFORMATION_MESSAGE);
}
});
JMenuItem b = color.add("背景色");
b.addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null,
"该项目正在建设中", "信息",
JOptionPane.INFORMATION_MESSAGE);
}
});
edit.add(color);
JMenuItem select = edit.add("全选");
menu.add(document);
menu.add(edit);
menu.add(help);
setLocation(400,200);
setSize(300, 300);
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
}
public static void main(String[]args)
{
demo browser = new demo();
browser.setVisible(true);
}
}
java程序在服务器上执行命令得到返回信息并分析
String command = new Scanner(System.in).nextLine();
Process process = new Runtime.getRuntime().exec(command); // command为unix命令，如"ls"等
BufferedReader results = new BufferedReader(new InputStreamReader(process.getInputStream()));
String s;
while((s = results.readLine()) != null) {
System.out.println(s);
}
JAVA怎么写拼音提示，比如在输入框写"dh"则下拉框出现“大华”？
1.准备数据
--建表
create table PY
(
ID INT not null primary key,--主键
WORD VARCHAR(10),--中文字、词
PY_CODE VARCHAR(10)--拼音
)
--导入数据
insert into PY(ID, WORD, PY_CODE)
values (1, '啊', 'a');
...
2.用Ajax 输入框onChange事件 javascript
java代码 实现页面内容读取
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;public class Test
{
public static void main(String[] args) throws Exception
{
PrintWriter pw = new PrintWriter("d:\\test.xml");//d:\\test.xml是你的xml文件路径
pw.println(getHtmlConentByUrl(" "));// 是你要访问的页面
pw.flush();
pw.close();
}
public static String getHtmlConentByUrl(
String ssourl) {
try {
URL url = new URL(ssourl);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setInstanceFollowRedirects(false);
con.setUseCaches(false);
con.setAllowUserInteraction(false);
con.connect(); StringBuffer sb = new StringBuffer();
String line = "";
BufferedReader URLinput = new BufferedReader(new InputStreamReader(con.getInputStream()));
while ((line = URLinput.readLine()) != null) {
sb.append(line);
}
con.disconnect();
return sb.toString().toLowerCase();
} catch (Exception e) {
return null;
}
}}
在获取到的页面内容是字符串，这里解析有两个办法，一是通过dom4j把字符串转化为dom进行解析，这样最好，但是对方的页面未必规范，符合dom结构。二是通过解析字符串过滤你想要的内容，该方法比较繁琐，需要一些技巧。我有的就是二；
求一个简单RPG游戏的代码，JAva编写的
package com.lxi;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Rpg {
@SuppressWarnings("unchecked")
public static void main(String[] args) throws Exception {
System.out.println("在这里输入两个人物进行PK,以英文逗号分隔： [BM，DH，MK]");
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
ClassPerson c1;
ClassPerson c2;
try {
String temp = br.readLine();
String[] str = temp.split(",");
if (str.length != 2) {
throw new Exception("输入格式有误，按默认PK");
}
c1 = (ClassPerson) Class.forName("com.lxi."
+ str[0].toUpperCase());
c2 = (ClassPerson) Class.forName("com.lxi."
+ str[1].toUpperCase());
} catch (Exception e) {
// TODO Auto-generated catch block
c1 = (ClassPerson) Class.forName("com.lxi.BM");
c2 = (ClassPerson) Class.forName("com.lxi.DH");
}
try {
Person p1 = c1.newInstance();
Person p2 = c2.newInstance();
long time = System.currentTimeMillis();
long nextTime1 = (long) (time + p1.coldTime*1000); //
long nextTime2 = (long) (time + p2.coldTime*1000); //发动攻击的时间
System.out.println("---游戏开始---");
while (true) {
long currenTime = System.currentTimeMillis();
if (nextTime1 currenTime) { //时间到则发动攻击
p1.hit(p2);
nextTime1 += p1.coldTime*1000 + p1.waitTime*1000; //下次攻击时间=冷却时间+被晕眩时间
p1.waitTime = 0; //回合结束，重置被晕眩时间为0
}
if (nextTime2 currenTime) {
p2.hit(p1);
nextTime2 += p2.coldTime*1000 + p2.waitTime*1000;
p2.waitTime = 0;
}
}
} catch (ClassCastException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
package com.lxi;
import java.util.Random;
class BM extends Person {
public BM() {
val = 650;
coldTime = 1.5;
fight = 40;
chanceHit = 3;
chanceDefense = 3;
waitTime = 0;
}
int count = 0; //防御技能发动的次数
int temp = 40; //攻击力，值同fight
boolean hitFlag = false;
boolean defenseFlag = false;
Random rand = new Random();
public void hit(Person p) {
if (rand.nextInt(10) chanceHit) {
fight = fight * 2; //发动双倍攻击
hitFlag = true;
}
int hurt = p.defense(this);
p.val = p.val - hurt;
fight = temp; //还原为单倍攻击
if (p.val = 0) {
System.out.println(this.getClass().getSimpleName() + "胜出!");
System.exit(0);
}
System.out.println(this.getClass().getSimpleName() + "攻击"
+ p.getClass().getSimpleName() + ","
+ this.getClass().getSimpleName()
+ (this.hitFlag ? "发动攻击技能 " : "未发动攻击技能 ")
+ p.getClass().getSimpleName()
+ (this.defenseFlag ? "发动防御技能 " : "未发动防御技能 ")
+ this.getClass().getSimpleName() + ":" + this.val + ","
+ p.getClass().getSimpleName() + ":" + p.val);
hitFlag = false;
defenseFlag = false;
}
public int defense(Person p) {
if (rand.nextInt(10) chanceDefense) {
if (count != 0) {
p.val = p.val - p.fight;
count++;
defenseFlag = true;
if (p.val = 0) {
System.out.println(this.getClass().getSimpleName() + "胜出!");
System.exit(0);
}
}
}
return p.fight;
}
}
class MK extends Person {
public MK() {
val = 700;
coldTime = 2.5;
fight = 50;
chanceDefense = 6;
chanceHit = 3;
waitTime = 0;
}
boolean hitFlag = false;
boolean defenseFlag = false;
Random rand = new Random();
public void hit(Person p) {
if (rand.nextInt(10) chanceHit) {
p.waitTime = 3; //使对方晕眩3s
hitFlag = true;
}
int hurt = p.defense(this);
p.val = p.val - hurt;
if (p.val = 0) {
System.out.println(this.getClass().getSimpleName() + "胜出!");
System.exit(0);
}
System.out.println(this.getClass().getSimpleName() + "攻击"
+ p.getClass().getSimpleName() + ","
+ this.getClass().getSimpleName()
+ (this.hitFlag ? "发动攻击技能 " : "未发动攻击技能 ")
+ p.getClass().getSimpleName()
+ (this.defenseFlag ? "发动防御技能 " : "未发动防御技能 ")
+ this.getClass().getSimpleName() + ":" + this.val + ","
+ p.getClass().getSimpleName() + ":" + p.val);
hitFlag = false;
defenseFlag = false;
}
public int defense(Person p) {
if (rand.nextInt(10) chanceDefense) {
defenseFlag = true;
return p.fight / 2; //防御技能发动，伤害减半
}
return p.fight;
}
}
package com.lxi;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Random;
//三个人物的基类
abstract class Person {
int val; //生命值
double coldTime; //冷却时间
int waitTime; //晕眩时间
int fight; //攻击力
int chanceHit; //发起主动技能的概率
int chanceDefense; //发起防御技能的概率
abstract void hit(Person p); //攻击技能
abstract int defense(Person p); //防御技能，返回被伤害点数
}
class DH extends Person {
public DH() {
val = 600;
coldTime = 1.0;
fight = 30;
chanceHit = 3; //表示30%的概率
chanceDefense = 3;
waitTime = 0;
}
Random rand = new Random();
boolean hitFlag = false; //主动技能发动的标识
boolean defenseFlag = false; //防御技能发动的标识
public void hit(Person p) {
if (rand.nextInt(10) chanceHit) { //发动主动技能
int hurt = p.defense(this);
p.val = p.val - hurt;
if (p.val = 0) {
System.out.println(this.getClass().getSimpleName() + "胜出!");
System.exit(0);
}
val = val + hurt;
if (val 600)
val = 600;
hitFlag = true; //标记主动技能已经发动
} else { //进行普通攻击
int hurt = p.defense(this);
p.val = p.val - hurt;
if (p.val = 0) {
System.out.println(this.getClass().getSimpleName() + "胜出!");
System.exit(0);
}
}
System.out.println(this.getClass().getSimpleName() + "攻击"
+ p.getClass().getSimpleName() + ","
+ this.getClass().getSimpleName()
+ (this.hitFlag ? "发动攻击技能 " : "未发动攻击技能 ")
+ p.getClass().getSimpleName()
+ (this.defenseFlag ? "发动防御技能 " : "未发动防御技能 ")
+ this.getClass().getSimpleName() + ":" + this.val + ","
+ p.getClass().getSimpleName() + ":" + p.val);
hitFlag = false; //
defenseFlag = false; //重置标记，下次重用
}
public int defense(Person p) {
if (rand.nextInt(10) chanceDefense) {
defenseFlag = true; //标记防御技能已经发动
return 0;
} else {
return p.fight;
}
}
}
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