Real-time stock information updates with JSON

Real-time update of stock information using JSON one, server code 1, Stock.java

package bean;public class Stock {    private String code;    private String name;    private int price;    public String getCode() {        return code;    }    public void setCode(String code) {        this.code = code;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getPrice() {        return price;    }    public void setPrice(int price) {        this.price = price;    }}

2, Actionservlet.java

Package Web;import Java.io.ioexception;import java.io.printwriter;import java.util.arraylist;import java.util.List; Import Java.util.random;import Javax.servlet.servletexception;import Javax.servlet.http.httpservlet;import Javax.servlet.http.httpservletrequest;import Javax.servlet.http.httpservletresponse;import Bean. Stock;import Net.sf.json.jsonarray;public class Actionservlet extends httpservlet{public void service (httpservletrequ        EST request,httpservletresponse response) throws servletexception,ioexception{System.out.println ("service ()");        Gets the request path String Uri=request.getrequesturi ();        System.out.println (URI);        Parse Request path String action=uri.substring (Uri.lastindexof ("/"), Uri.lastindexof ("."));        System.out.println (action);        Response.setcontenttype ("Text/html;charset=utf-8");        PrintWriter Out=response.getwriter (); if ("/quoto". Equals (Action)) {//simulation generates several stock information list<stock> stocks=new ARRAYLIST&LT;STOCK> ();            Random r=new random ();                for (int i=0;i<8;i++) {stock s=new stock ();                S.setcode ("600877" +r.nextint (10));                S.setname ("China jialing" +r.nextint (100));                S.setprice (10+r.nextint (1000));            Stocks.add (s);            The parameters of the//fromobject method can be either porcine or combined with Jsonarray jsonarr=jsonarray.fromobject (stocks);            String jsonstr=jsonarr.tostring ();            System.out.println (JSONSTR);        Out.println (JSONSTR); }    }}

3. Web. xml

<?xml version= "1.0" encoding= "UTF-8"? ><web-app xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance" xmlns= "Http://java.sun.com/xml/ns/javaee" xsi:schemalocation= "Http://java.sun.com/xml/ns/javaee/http Java.sun.com/xml/ns/javaee/web-app_2_5.xsd "version=" 2.5 "> <display-name>ajax-day02</display-name > <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm& Lt;/welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</ Welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</ welcome-file> </welcome-file-list> <servlet> <servlet-name>action</servlet-name> <se Rvlet-class>web. actionservlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>action</ Servlet-name> <url-pattern>*.do</url-pattern> </servleT-mapping></web-app> 

4, Pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>cn.qiuuuu</groupId>  <artifactId>ajax-day02</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>war</packaging>  <dependencies>      <dependency>          <groupId>net.sf.json-lib</groupId>          <artifactId>json-lib</artifactId>          <version>2.4</version>          <classifier>jdk15</classifier>    </dependency>  </dependencies></project>

Second, client code 1.stock.jsp

<%@ page contenttype= "text/html; Charset=utf-8 "pageencoding=" Utf-8 "%><! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd" >

Third, the realization effect

Real-time stock information updates with JSON