Java读取指定网页和读取本地文件

最新推荐文章于 2023-10-21 11:07:58 发布

转载最新推荐文章于 2023-10-21 11:07:58 发布 · 281 阅读

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原文链接：https://blog.youkuaiyun.com/scau_syd/article/details/53009452

文章标签：

#java读取文件

本文展示了一个Java程序，用于从远程URL读取文件内容并将其解析为字符串列表。通过实例演示了如何使用HttpURLConnection获取HTTP响应，并读取输入流到BufferedReader中逐行处理。

package com.jyb.aiponews;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

public class httpWebIOTest {

    /**
     * @param args
     */
    public static void main(String[] args) {

        /*String buildPath = "F:\\build.xml";
        LocalFileReader.getFile(buildPath);

        String txtPath = "F:\\1.txt";
        LocalFileReader.getFile(txtPath);*/

        String baiduURL = "http://static.iqdii.com/stockdata/holdstock/stockcode/e00711.xml";
        RemoteFileReader.getFile(baiduURL);
        System.out.println(RemoteFileReader.getFile(baiduURL));
    }
}

class RemoteFileReader {


    public static List<String> getFile(String urlPath) {
        System.out.println("Start to get file from URL...");
        List<String> contents = new ArrayList<String>();

        URL url;
        try {
            url = new URL(urlPath);
            URLConnection conn = url.openConnection();
            conn.connect();
            HttpURLConnection httpConn = (HttpURLConnection) conn;
            if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
                InputStreamReader isr = new InputStreamReader(httpConn.getInputStream());
                BufferedReader br = new BufferedReader(isr);
                String line;
                while ((line = br.readLine()) != null) {
                    System.out.println(line.trim());

                    boolean aa = "<row>".equals(line.trim());
                    if (aa)
                        contents.add(line);
                }
            } else {
                System.out.println("Cannot connect to the " + urlPath);
            }


        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        System.out.println("Finished getting the contents from URL...");
        return contents;
    }
}

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