读取url资源并生成文件

 java程序

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import HYBTX.info.WriteHtml;

public class OutToHtml {
    private String str = null;

    public String getstr() {
        return str;
    }
// urlAddress 要读取的url资源地址
// filePath 要存入文件的路径
// Rename 要存入文件的名字(包括扩展名)
public void transactionFile(String urlAddress, String filePath, String Rename) throws Exception {
        try {
            URL url = new URL(urlAddress);
            HttpURLConnection connect = (HttpURLConnection) url
                    .openConnection();
            connect.setDoInput(true);
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    connect.getInputStream()));
            String line = null;
           
            StringBuffer content = new StringBuffer();

            while ((line = in.readLine()) != null) {
                // line为返回值，这就可以判断是否成功、
                content.append(line+"\r\n");
                // \r\n 表示换行
            }
            WriteHtml.save(content.toString(), filePath, Rename);
            in.close();
            in = null;
            url = null;
        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (Exception e) {
            str = e.toString();
            System.out.println("错误：");
            System.out.println(e.getStackTrace());
        }
    }
}


package HYBTX.info;

import java.io.*;

public class WriteHtml {

    public WriteHtml() {
    }
// 将内容写入文件中
// strcontent 读取到的url资源的内容
// filePath 要存入文件的路径
// Rename 要存入文件的名字(包括扩展名)
    public static void save(String strcontent, String filePath, String Rename)

    {
        try {
            CheckHaveDir(filePath);
            FileOutputStream fileoutputstream = new FileOutputStream(filePath+ Rename);
            byte bytes[] = strcontent.getBytes();
            fileoutputstream.write(bytes);
            fileoutputstream.close();
        } catch (IOException e) {
            System.out.println(" write html error" + e.getMessage());
        }
    }

//判断是否存在该路径和文件夹
    private static void CheckHaveDir(String filePath) {
        try {
            File file = new File(filePath);
            if (!file.exists())
                file.mkdirs();
        } catch (Exception e) {
            System.out.println(" mkdirs error!" + e.getMessage());
        }
    }
}

 

 

//调用的jsp页面

 

<%@ page import="java.util.*,java.io.*,javax.servlet.*,javax.servlet.http.*,java.lang.*,org.itwoody.search.*" %>
<%@ page contentType="text/html; charset=gb2312" %>
<jsp:useBean id="myzsindex" scope="page" class="home.beans.MyZsIndex"/>
<jsp:useBean id="gethtml" scope="page" class="home.bbs.beans.OutToHtml"/>
<%
String str=this.getServletContext().getRealPath("\\")+"search\\";
//获取保存文件地址
gethtml.transactionFile("http://127.0.0.1:8080/search/mypdClassSearch.do?ActionType=DisplayAllMypClass",str,"index.html");
%>

 

转载自：http://blog.sina.com.cn/s/blog_3f7f41d4010082x5.html