java简易接口建立

服务端：

    public void getOneStudent(String str1, String str2, String str3){
        Student s = new Student();
　　　　 s.setName("Tony");
　　　　 s.setNum("123");
　　　　 String message = JSONObject.toJSONString(s); //将类数据转成String字符串
        String sb = null;
        try {
            sb = URLEncoder.encode(message, "UTF-8");//中文转码
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        write(sb);
    }
  
    //把信息写到浏览器上
    private void write(String message){
        if(message == null){
            message = "false";    /* set default false when the message is null */    
        }
        HttpServletResponse response =  Result.getServletResponse(true);
        response.setCharacterEncoding("GBK");
        PrintWriter writer;
        try {
            writer = response.getWriter();
            writer.write(message);
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

访问端：

public static Student sendTheUrl(String str1, String str2, String str3){
        Student s = null;
        String baseUrl = "http://localhost:8080/xxxx/getOneStudent?";
        String urlStr = null;
        try {
            urlStr = baseUrl +"str1="+URLEncoder.encode(str1, "UTF-8")+"&str2="+str2+"&str3="+str4;
        } catch (UnsupportedEncodingException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        URL url = null;
        BufferedReader br = null;
        HttpURLConnection conn = null;
        StringBuffer sb = new StringBuffer();
        try {
            url = new URL(urlStr);
            conn = (HttpURLConnection) url.openConnection();
            br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
            String line = null;
            while( (line = br.readLine()) != null ){
                sb.append(line);
            }
            if(sb !=null && !"".equals(sb)){
                String a = URLDecoder.decode(sb.toString(), "UTF-8");//转码
                s = JSONObject.parseObject(a, Student.class);//String转实体类
            }
        } catch (Exception e) {
            LoggerUtil.errorLogger.error("请求搜索分类提示接口错误: " + e.toString());
        }finally{
            try {
                if(br != null){
                    br.close();
                }
                if(conn != null){
                    conn.disconnect();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }

        }
        return s;
    }