第一种方式：读取本地的json文件

Resource resource;
resource = new ClassPathResource("static" + File.separator + "script" + File.separator + "pub"+ File.separator + "pub_close_browser_no_flow.json");
InputStream in = resource.getInputStream();

String jsonTxt = inputStream2String(in);

将流中的数据转为字段串 

public String inputStream2String(InputStream in) throws IOException {
	StringBuffer out = new StringBuffer();
	byte[] b = new byte[4096];
	for (int n; (n = in.read(b)) != -1;) {
		out.append(new String(b, 0, n));
	}
	return out.toString();
}

 注：File.separator 

/**
 * The system-dependent default name-separator character.  This field is
 * initialized to contain the first character of the value of the system
 * property <code>file.separator</code>.  On UNIX systems the value of this
 * field is <code>'/'</code>; on Microsoft Windows systems it is <code>'\\'</code>.
 *
 * @see     java.lang.System#getProperty(java.lang.String)
 */

第二种方式：读取配置中心的json文件

String ip = ServerUtils.getServerIp(eurekaClient,configCenterServer);
String url = "http://" + ip + ":" + httpURLForScript;
String jsonTxt = HttpTemplateUtil.httpGet(url + "pub/pub_close_browser_no_flow.json");
jsonTxt = getScriptByParam(jsonTxt, explorerHandle);

ServerUtils是获取注册中心的工具类

public class ServerUtils {

    public static String getServerIp(EurekaClient eurekaClient, String appName){
        Application application = eurekaClient.getApplication(appName);
        List<InstanceInfo> instanceInfoList = application.getInstances();
        log.info("获取的服务的IP的地址：" + instanceInfoList.get(0).getIPAddr());
        return instanceInfoList.get(0).getIPAddr();
    }
}

最关键的一步，将字段串进行解析，解析出需要的集合

Type type = new TypeToken<List<T>>() {
}.getType();
List<T> tList = gson.fromJson(jsonTxt, type);