java獲取其他接口返回的json數據【工具類】

需求：在java工程中，需要用到別的接口提供的數據時，如何獲取到這個數據，這個工具類可以獲取接口返回的json數據，直接拷貝就可以用了。

package test.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * @Author:renxin.tang
 * @Desc: 獲取HTTP接口數據
 * @Date: Created in 19:31 2019/4/22
 */
public class GetHttpData {
    public static String getData(String addess){
        URL url = null;
        HttpURLConnection httpConn = null;
        BufferedReader in = null;
        StringBuffer sb = new StringBuffer();
        try{
            url = new URL(addess);
            in = new BufferedReader(new InputStreamReader(url.openStream(),"utf-8") );
            String str = null;
            while((str = in.readLine()) != null) {
                sb.append( str );
            }
        } catch (Exception ex) {
        } finally{
            try{
                if(in!=null) {
                    in.close();
                }
            }catch(IOException ex) {
            }
        }
        String  data =sb.toString();
        return data;
    }
}