話不多說，請(qǐng)看代碼：
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package com.lxj.demo;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.MalformedURLException;import java.net.URL;public class Http extends Thread{ // 下載結(jié)束的回調(diào)接口 public interface IResult{ void success(String msg); void fail(String msg); } // 創(chuàng)建網(wǎng)絡(luò)地址的引用 String addr; // 創(chuàng)建回調(diào)接口的引用 IResult iResult ; // 生成構(gòu)造方法把網(wǎng)絡(luò)和接口的引用傳進(jìn)去 public Http(String addr, IResult iResult) { super(); this.addr = addr; this.iResult = iResult; // 開啟線程 線程一開啟就產(chǎn)生了異步 start(); } @Override // 重寫線程的run方法，只要是網(wǎng)絡(luò)就要用到多線程 public void run() { try { // 創(chuàng)建URL，把網(wǎng)絡(luò)地址傳進(jìn)去 URL url = new URL(addr); try { // 利用字符緩沖讀取流讀取網(wǎng)絡(luò)數(shù)據(jù) BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream())); // 創(chuàng)建stringbuffer對(duì)象 StringBuffer sb = new StringBuffer(); // 創(chuàng)建一個(gè)臨時(shí)儲(chǔ)存字符串的變量 String temp; // 當(dāng)temp不為空是就一直讀取數(shù)據(jù) while ((temp = br.readLine()) != null) { sb.append(temp); } // 數(shù)據(jù)讀取成功后 // 把讀取的所有數(shù)據(jù)傳到回調(diào)接口，再由接口傳出去 iResult.success(sb.toString()); } catch (IOException e) { e.printStackTrace(); } } catch (MalformedURLException e) { e.printStackTrace(); // 網(wǎng)絡(luò)請(qǐng)求發(fā)生異常 iResult.fail("網(wǎng)絡(luò)請(qǐng)求失敗"); } }} |
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package com.lxj.demo;import net.sf.json.JSONObject;import com.xykj.demo.Http.IResult;public class IPRequest { // 請(qǐng)求IP信息的回調(diào)接口，在這里必須要使用回調(diào)，因?yàn)椴恢繦ttp什么時(shí)候下載完成 public interface IRequest{ void success(IPBean ipBean); void fail(String msg); } // 只要給一個(gè)ip地址和回調(diào)接口，我們可以通過回調(diào)接口傳回轉(zhuǎn)化好的ip信息對(duì)象 public void request(String IP,IRequest iRequest){ // 把用戶輸入的ip地址拼接到url中，發(fā)起Http請(qǐng)求 String addr ="http://apicloud.mob.com/ip/query?key=520520test&ip=" + IP + ""; new Http(addr, new IResult() { // 創(chuàng)建完的IResult success和fail不會(huì)馬上調(diào)用，必須要等到Http下載完成或者發(fā)生異常才會(huì)調(diào)用 @Override public void success(String msg) { // 把接收的json數(shù)據(jù)轉(zhuǎn)化成IPBean對(duì)象 JSONObject jsonObject = JSONObject.fromObject(msg); IPBean ipBean = (IPBean) JSONObject.toBean(jsonObject, IPBean.class); // 產(chǎn)生回調(diào)，把轉(zhuǎn)化好的對(duì)象傳遞出去給Demo iRequest.success(ipBean); } @Override public void fail(String msg) { // Http請(qǐng)求失敗的時(shí)候 iRequest.fail(msg); } }); }} |
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package com.lxj.demo;public class IPBean { public static class Result{ private String city; private String country; private String ip; private String province; public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getCountry() { return country; } public void setCountry(String country) { this.country = country; } public String getIp() { return ip; } public void setIp(String ip) { this.ip = ip; } public String getProvince() { return province; } public void setProvince(String province) { this.province = province; } @Override // 這里必須要重寫toString方法，否則將打印的內(nèi)存里面的地址 public String toString() { return "city：" + city + "\ncountry：" + country + "\nip：" + ip + "\nprovince：" + province; } } Result result; private String msg; private String retCode; public Result getResult() { return result; } public void setResult(Result result) { this.result = result; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public String getRetCode() { return retCode; } public void setRetCode(String retCode) { this.retCode = retCode; }} |
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package com.lxj.demo;import java.util.Scanner;import com.xykj.demo.IPRequest.IRequest;public class Demo { public static void main(String[] args) { Scanner sc = new Scanner(System.in); // 創(chuàng)建IPRequest對(duì)象 IPRequest ipRequest = new IPRequest(); while (true) { System.out.println("請(qǐng)輸入要查詢的IP:"); String ip = sc.next(); // 調(diào)用IPRequest里面的request方法 ipRequest.request(ip, new IRequest() { @Override public void success(IPBean ipBean) { System.out.println("*************查詢結(jié)果*************"); System.out.println(ipBean.getResult()); } @Override public void fail(String msg) { System.out.println(msg); } }); } }} |
以上就是本文的全部內(nèi)容，希望本文的內(nèi)容對(duì)大家的學(xué)習(xí)或者工作能帶來一定的幫助，同時(shí)也希望多多支持服務(wù)器之家！
原文鏈接：http://www.cnblogs.com/lxjhoney/p/6405194.html
