java类中调用servlet

我们有时可能需要在Java类中调用Servlet从而实现某些特殊的功能，在JavaAPI中提供了一个URL的类，其中openStream( )方法可以打开URL的连接，并返回一个用于该连接读入的InputStream。

二、Java中调用servlet应用举例：

package com.solid.test;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import java.net.URL;

public class TestCallServlet {

       //servlet路径

       private static final String path = "http://localhost:8080/test/servlet/TestServlet";

       /**

        * 测试调用servlet方法

        * @param args

        */

       public static void main(String[] args) {

              try {

                     URL url = new URL(path);

                     url.openStream();

              } catch (MalformedURLException e) {

                     e.printStackTrace();

              } catch (IOException e) {

                     e.printStackTrace();

              }

       }

}

三、读取某个页面源代码的应用举例：

package com.solid.test;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

public class TestReaderSource {

       //URL路径

       private static final String path = "http://www.google.cn";

       //读取path路径下页面的源代码方法测试

       public static void main(String[] args) {

              BufferedReader br = null;

              String source;

              try {

                     URL url = new URL(path);

                     URLConnection conn = url.openConnection();

                     br = new BufferedReader(new InputStreamReader(conn.getInputStream()));

                     while((source=br.readLine())!=null) {

                            System.out.println(source);

                     }

              } catch (MalformedURLException e) {

                     e.printStackTrace();

              } catch (IOException e) {

                     e.printStackTrace();

              } finally {

                     try {

                            if(br != null) {

                                   br.close();

                            }

                     } catch (IOException e) {

                            e.printStackTrace();

                     }

              }

       }

}