Java-->Json解析网页数据

--> 官方解析jar包： 链接：http://pan.baidu.com/s/1pKDnXKv 密码：694d

--> 离线Json格式检测工具： 链接：http://pan.baidu.com/s/1eSHkrOe 密码：ju95

--> HttpUtil 工具类

package com.dragon.java.jsonwebdata;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * 得到服务器响应的数据流的工具类
 * 
 * @author Auser
 * 
 */
public class HttpUtil {

    public static InputStream getInputStreamByPost(String url, String parms) {
        try {
            HttpURLConnection conn = (HttpURLConnection) new URL(url)
                    .openConnection();
            conn.setReadTimeout(5000);
            conn.setConnectTimeout(5000);
            conn.setRequestMethod("POST");
            conn.setDoOutput(true);

            OutputStream outputStream = conn.getOutputStream();
            outputStream.write(parms.getBytes());
            if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
                return conn.getInputStream();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

--> InputStreamUtil 工具类

package com.dragon.java.jsonwebdata;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * 将服务器响应数据流转换成String的工具类
 * 
 * @author Auser
 * 
 */
public class InputStreamUtil {

    public static String inputStreamToString(InputStream is) {
        try (BufferedReader br = new BufferedReader(new InputStreamReader(is));) {
            String line = null;
            while ((line = br.readLine()) != null) {
                return line;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

--> JsonUtil 工具类

package com.dragon.java.jsonwebdata;

import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * Json解析的工具类
 * 
 * @author Auser
 * 
 */
public class JsonUtil {
    /**
     * 官方解析方法 --> 不管多复杂都可以解析，但是非常复杂！！！
     * 
     * @param json
     */
    public static void jsonParse(String json) {
        List<Detail> details = new ArrayList<>();
        try {
            JSONObject object = new JSONObject(json);
            if (object.getString("status").equals("000000")) {
                if (object.getString("desc").equals("null")) {
                    details = JSONArray(details, object);
                    for (Detail detail : details) {
                        System.out.println(detail);
                    }
                }
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    /**
     * Json数组
     * 
     * @param details
     * @param object
     * @return List<Detail>
     * @throws JSONException
     */
    private static List<Detail> JSONArray(List<Detail> details,
            JSONObject object) throws JSONException {
        JSONArray array = object.getJSONArray("detail");
        for (int i = 0; i < array.length(); i++) {
            JSONObject object2 = array.getJSONObject(i);
            int id = object2.getInt("id");
            int xhid = object2.getInt("xhid");
            String author = object2.getString("author");
            String content = object2.getString("content");
            String picUrl = object2.getString("picUrl");
            String status = object2.getString("status");
            Detail detail = new Detail(id, xhid, author, content, picUrl,
                    status);
            details.add(detail);
        }
        return details;
    }
}

--> Test 测试类

package com.dragon.java.jsonwebdata;

import java.util.Scanner;

/*
 * Json解析网页数据
 */
public class Test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入页数:");
        int currentPage = scanner.nextInt();
        System.out.println("请输入每页笑话数:");
        int size = scanner.nextInt();

        String url = "http://api.1-blog.com/biz/bizserver/xiaohua/list.do";
        String parms = "currentPage=" + currentPage + "&size=" + size;
        // 得到服务器响应的数据并转换成String
        String json = InputStreamUtil.inputStreamToString(HttpUtil
                .getInputStreamByPost(url, parms));
        // Json解析
        JsonUtil.jsonParse(json);
    }
}

--> 写完发现用官方的解析方法，那是极复杂的...还是Gson方便！

************之前忘的Detail类************

package com.dragon.java.hwgsonparse;

public class Detail {
    private int id;
    private String city;
    private String county;
    private String date;
    private String day_conditon;
    private String day_wind;
    private String day_temperature;
    private String night_codition;
    private String night_wind;
    private String night_temperature;
    private long update_time;

    public Detail() {
        super();
    }

    public Detail(int id, String city, String county, String date,
            String day_conditon, String day_wind, String day_temperature,
            String night_codition, String night_wind, String night_temperature,
            long update_time) {
        super();
        this.id = id;
        this.city = city;
        this.county = county;
        this.date = date;
        this.day_conditon = day_conditon;
        this.day_wind = day_wind;
        this.day_temperature = day_temperature;
        this.night_codition = night_codition;
        this.night_wind = night_wind;
        this.night_temperature = night_temperature;
        this.update_time = update_time;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public String getCounty() {
        return county;
    }

    public void setCounty(String county) {
        this.county = county;
    }

    public String getDate() {
        return date;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public String getDay_conditon() {
        return day_conditon;
    }

    public void setDay_conditon(String day_conditon) {
        this.day_conditon = day_conditon;
    }

    public String getDay_wind() {
        return day_wind;
    }

    public void setDay_wind(String day_wind) {
        this.day_wind = day_wind;
    }

    public String getDay_temperature() {
        return day_temperature;
    }

    public void setDay_temperature(String day_temperature) {
        this.day_temperature = day_temperature;
    }

    public String getNight_codition() {
        return night_codition;
    }

    public void setNight_codition(String night_codition) {
        this.night_codition = night_codition;
    }

    public String getNight_wind() {
        return night_wind;
    }

    public void setNight_wind(String night_wind) {
        this.night_wind = night_wind;
    }

    public String getNight_temperature() {
        return night_temperature;
    }

    public void setNight_temperature(String night_temperature) {
        this.night_temperature = night_temperature;
    }

    public long getUpdate_time() {
        return update_time;
    }

    public void setUpdate_time(long update_time) {
        this.update_time = update_time;
    }

    @Override
    public String toString() {
        return "Detail [id=" + id + ", city=" + city + ", county=" + county
                + ", date=" + date + ", day_conditon=" + day_conditon
                + ", day_wind=" + day_wind + ", day_temperature="
                + day_temperature + ", night_codition=" + night_codition
                + ", night_wind=" + night_wind + ", night_temperature="
                + night_temperature + "]";
    }

}