JAVA ，JSON 和 PHP 的配合使用_php兼容java的json包-优快云博客

本文链接：https://blog.youkuaiyun.com/qw3752258/article/details/37764415

本文介绍了一种使用Java通过HTTP GET请求从指定URL获取IP地址相关信息的方法，并展示了如何解析返回的JSON格式数据。

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总算入门了~

1.PHP:

PHP目前没有精力搭建，我们直接用这个：

http://ip.taobao.com/service/getIpInfo.php?ip=202.202.32.202

2.JAVA

主程序，注意我的包的位置，一会要新建一个包的：

package leon.du.jsontest;

import leon.du.jsontest.utilities.URLutilities;


/**
 * Created by leon on 14/7/13.
 */
public class JSONtest {
    static public void main (String[] args)
    {
        String url = "http://ip.taobao.com/service/getIpInfo.php?ip=";
        String cmd = "202.202.32.202";
        System.out.println("BeforeReadURL");
        System.out.println("Your GET Request is "+cmd);
        System.out.println(URLutilities.readURLtoString(url+cmd));
        System.out.println("AfterReadURL");
    }
}

自己写的一个unilities：

package leon.du.jsontest.utilities;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;

/**
 * Created by leon on 14/7/14.
 * Read jsonString from a urlString(eg:"http://ip.taobao.com/service/getIpInfo.php?ip="+ipaddress) in java
 * 只要有个String的地址，我就可以GET，得到一个JSON的String
 */
public class URLutilities {
    /*
    * @param urlString :发送请求的URL,类型为String
    * @return result URL代表的资源响应，类型String
    * */

     static public String readURLtoString (String urlString)
    {//这个地方要用static，目前还不懂
        //定义返回值
        String result="";
        StringBuffer readOneLineBuff = new StringBuffer();
        try {
            URL urlURL = new URL(urlString);
            URLConnection connection = urlURL.openConnection();
            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line = "";
            while((line = reader.readLine())!=null){
                readOneLineBuff.append(line);
            }
            result = readOneLineBuff.toString();

        }catch (Exception e)
        {
            System.out.println("GET Failed!"+e);
            e.printStackTrace();
        }
        return result;
    }

}

3.运行结果

BeforeReadURL
Your GET Request is 202.202.32.202
{"code":0,"data":{"country":"\u4e2d\u56fd","country_id":"CN","area":"\u897f\u5357","area_id":"500000","region":"\u91cd\u5e86\u5e02","region_id":"500000","city":"\u91cd\u5e86\u5e02","city_id":"500000","county":"","county_id":"-1","isp":"\u6559\u80b2\u7f51","isp_id":"100027","ip":"202.202.32.202"}}
AfterReadURL

4.用JSONString 变成object 或者 JSONobject ，下次写吧，反正这个东西下回直接可以调用了