首先打开myEclipse创建一个web项目,然后将我们要访问的图片资源放在WEBRoot文件夹先,然后将项目部署在Tomcate服务器上,再者就是启动服务器。
然后再eclipse中创建一个普通的java项目,模仿客户端,使用Http协议的Get方法访问图片资源,具体代码如下:
- package com.http.get;
-
- import java.io.FileNotFoundException;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.net.HttpURLConnection;
- import java.net.MalformedURLException;
- import java.net.URL;
-
-
-
-
- public class HttpUtils {
-
- // 本地的IP地址是169.254.74.214
- private static String URL_PATH = "http://169.254.167.66:8080/myhttp/yuliyan.png";
-
- public HttpUtils() {
-
- }
-
- public static void saveImageToDisk() {
- InputStream inputStream = getInputStream();
- byte[] data = new byte[1024];
- FileOutputStream fileOutputStream = null;
- int len = 0;
- try {
- fileOutputStream = new FileOutputStream("c:\\oue.jpg");
- while ((len = inputStream.read()) != -1) {
- fileOutputStream.write(data, 0, len);
- }
-
- } catch (FileNotFoundException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- if (inputStream != null) {
- try {
- inputStream.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- if (fileOutputStream != null) {
- try {
- fileOutputStream.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
-
- }
-
- public static InputStream getInputStream() {
- InputStream inputStream = null;
- HttpURLConnection httpsURLConnection = null;
- try {
- URL url = new URL(URL_PATH);
-
- if (url != null) {
- httpsURLConnection = (HttpURLConnection) url.openConnection();
- httpsURLConnection.setConnectTimeout(3000); // 设置网络的超时时间
- httpsURLConnection.setRequestMethod("GET"); // 设置本次http请求使用GET方式
- int responseCode = httpsURLConnection.getResponseCode();
- if (responseCode == 200) {
- // 从服务器端得到输入流
- inputStream = httpsURLConnection.getInputStream();
- }
- }
- } catch (MalformedURLException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- }
-
- return inputStream;
- }
-
- public static void main(String[] args) {
- // 从服务器获得图片完成保存图片在本地
- saveImageToDisk();
- }
-
- }
注意:
我们在创建客户端访问服务器端得代码中要先将commons-httpclient-3.0.1.jar导入带项目中,然后再创建java类,同时要注意在敲
- HttpURLConnection httpsURLConnection = null;
- try {
- URL url = new URL(URL_PATH);
-
- if (url != null) {
- httpsURLConnection = (HttpURLConnection) url.openConnection();
- httpsURLConnection.setConnectTimeout(3000); // 设置网络的超时时间
- httpsURLConnection.setRequestMethod("GET"); // 设置本次http请求使用GET方式
- int responseCode = httpsURLConnection.getResponseCode();
这段代码时不要导javax.net.ssl.HttpsURLConnection,要导入import java.net.HttpURLConnection;