一、java获取公网ip和本地ip

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一、java常用-java获取公网ip和本地ip

获取本地ip代码：

本地ip获取相对简单

/** * 方法描述：获取操作的本机ip *@param request *@return */public static String getLocalhostIpAddr() {String addr = null;try {addr = InetAddress.getLocalHost().getHostAddress();} catch (UnknownHostException e) {logger.error(String.format("UnknownHostException出错，原因：%s", e.getMessage()));}    return addr; }

获取公网ip代码：

获取公网ip麻烦一点，我们通过ip138.com这个网站获取公网ip，而这个网站获取公网ip的接口是http://1212.ip138.com/ic.asp直接用java进行访问然后返回的数据进行解析和拆分组装就能获得公网ip

/** * 方法描述：获取公网ip *@return */public static String getCommIpAddr() {          try {           URL url = new URL("http://1212.ip138.com/ic.asp");           BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));           String s = "";           StringBuffer sb = new StringBuffer("");           String webContent = "";           while ((s = br.readLine()) != null) {            sb.append(s + "\r\n");           }           br.close();           webContent = sb.toString();           int start = webContent.indexOf("[")+1;           int end = webContent.indexOf("]");           webContent = webContent.substring(start,end);           return webContent;          } catch (Exception e) {          logger.error(String.format("Exception出错，原因：%s", e.getMessage()));           return "error";          }    }

效果图：

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