如何使用JAVA接口传递参数

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1，给接口传递json格式的数据

import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import net.sf.json.JSONObject; public class AppAddTest {     public static final String ADD_URL = "http://192.168.1.1:8080/*.controller/*.action";     public static void appadd() {         try {             URL url = new URL(ADD_URL);             HttpURLConnection connection = (HttpURLConnection) url                     .openConnection();             connection.setDoOutput(true);             connection.setDoInput(true);             connection.setRequestMethod("POST");             connection.setUseCaches(false);             connection.setInstanceFollowRedirects(true);             connection.setRequestProperty("connection", "Keep-Alive");             //connection.setRequestProperty("Content-Type", "text/plain; charset=utf-8");             connection.connect();             //POST请求             DataOutputStream out = new DataOutputStream(                     connection.getOutputStream());             JSONObject obj = new JSONObject();             String message = java.net.URLEncoder.encode("哈哈哈","utf-8");             obj.element("detail", "df");             obj.element("TEXT1", "asd");             obj.element("TEXT2", message);             out.writeBytes("data="+obj.toString());             System.out.println("data="+obj.toString());             out.flush();             out.close();             //读取响应             BufferedReader reader = new BufferedReader(new InputStreamReader(                     connection.getInputStream()));             String lines;             StringBuffer sb = new StringBuffer("");             while ((lines = reader.readLine()) != null) {                 lines = new String(lines.getBytes(), "utf-8");                 sb.append(lines);             }             System.out.println(sb);             reader.close();             connection.disconnect();         } catch (MalformedURLException e) {             e.printStackTrace();         } catch (UnsupportedEncodingException e) {             e.printStackTrace();         } catch (IOException e) {             e.printStackTrace();         }     }     public static void main(String[] args) {         appadd();     } }

2.从接口获取json格式数据

import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.URL; import java.net.URLConnection; import java.sql.Timestamp; import java.util.concurrent.ConcurrentHashMap; import net.sf.json.JSONArray; import net.sf.json.JSONException; import net.sf.json.JSONObject; import org.springframework.web.HttpRequestHandler; public class JAVAURL {     /**      * @param args      */     public static void main(String[] args) {         String url = "http://192.168.1.1:8080/*.controller.do/*.action";            System.out.println("URL："+url);            StringBuffer json = new StringBuffer();             try {                 //实例一个url和URLConnection                 URL oracle = new URL(url);                 //打开链接                 URLConnection yc = oracle.openConnection();                 //输入流作参数传进InputStreamReader并用BufferedReader接受                 BufferedReader in = new BufferedReader(new InputStreamReader(                                             yc.getInputStream()));                 String inputLine = null;                 //一直读到空，并设置流编码是UTF8                 while ( (inputLine = in.readLine()) != null) {                     json.append(new String(inputLine.getBytes(),"GBK"));                 }                 //记得关闭连接                 in.close();             } catch (Exception e)  {                 e.printStackTrace();             }         try {             JSONArray jn =  JSONArray.fromObject(json.toString());             if(jn.size()>0){             for (int i = 0; i < jn.size(); i++) {                 JSONObject jo = (JSONObject) jn.get(i);                 System.out.println(jo.get("id"));                 System.out.println(jo.get("fdName"));             }             System.out.println(jn);             }             System.out.println("数据大小："+jn.size());         } catch (Exception e) {             e.printStackTrace();             System.out.println("连接超时！");         }     } }

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