Question

我想创建一个带有 .cfg 扩展名的文件，此文件的内容必须采用以下格式

define host {
    host_name                       test.testing.local
    alias                           Server 1
    address                         192.168.1.111
    check_command                   check-host-alive
    max_check_attempts              10
    check_interval                  5
    retry_interval                  5
    active_checks_enabled           1
    passive_checks_enabled          1
    check_period                    24x7
    register                        1
}

为此我使用下面的代码

@POST
@Consumes("application/x-www-form-urlencoded")
@Path("/addNewHost")
public Response AddNewHost(String json) {
    JSONObject returnJson = new JSONObject();

    try {
        JSONObject innerJsonObj = new JSONObject(json);
        HostObj hostObj = new HostObj();
        hostObj.hostname = innerJsonObj.getString("hostname");
        hostObj.ipaddress = innerJsonObj.getString("ipaddress");
        hostObj.alias = innerJsonObj.getString("alias");
        hostObj.check_command = innerJsonObj.getString("check_command");
        hostObj.notification_period = innerJsonObj.getString("notification_period");
        hostObj.max_check_attempts = innerJsonObj.getInt("max_check_attempts");
        hostObj.active_checks_enabled = innerJsonObj.getInt("active_checks_enabled");
        hostObj.passive_checks_enabled = innerJsonObj.getInt("passive_checks_enabled");
        hostObj.register = innerJsonObj.getBoolean("register");
        hostObj.chIntervalInMinutes = innerJsonObj.getInt("chIntervalInMinutes");
        hostObj.retryIntervalInMinutes = innerJsonObj.getInt("retryIntervalInMinutes");
        hostObj.contact_groups = innerJsonObj.getString("contact_groups");
        hostObj.check_period = innerJsonObj.getString("check_period");

        String filename = hostObj.ipaddress.replace(".", "");
        Properties propFile = LoadProp.getProperties();
        BufferedWriter writer = Files.newBufferedWriter(Paths.get(propFile.getProperty(Constants.filepath) + filename + ".cfg"));
        writer.write("define host {\n");
        writer.write("\thost_name\t" + hostObj.hostname + "\n");
        writer.write("\talias\t" + hostObj.alias + "\n");
        writer.write("\taddress\t" + hostObj.ipaddress + "\n");
        writer.write("\tcheck_command\t" + hostObj.check_command + "\n");
        writer.write("\tmax_check_attempts\t" + hostObj.max_check_attempts + "\n");
        writer.write("\tcheck_interval\t" + hostObj.chIntervalInMinutes + "\n");
        writer.write("\tretry_interval\t" + hostObj.retryIntervalInMinutes + "\n");
        writer.write("\tactive_checks_enabled\t" + hostObj.active_checks_enabled + "\n");
        writer.write("\tpassive_checks_enabled\t" + hostObj.passive_checks_enabled + "\n");
        writer.write("\tcheck_period\t" + hostObj.check_period + "\n");
        writer.write("\tregister\t" + hostObj.register + "\n}");

        returnJson.put("success", true);
    } catch (Exception e) {
        JSONObject errorJson = new JSONObject();
        errorJson.put("success", false);
        errorJson.put("error", errorMsg);
        return Response.ok(errorJson.toString()).header("Access-Control-Allow-Origin", "*").build();
    }

    return Response.ok(returnJson.toString()).header("Access-Control-Allow-Origin", "*").build();
}

但问题是，当我运行它时，我的文件是用空数据创建的。所以请帮我解决这个问题。

我将Java与Eclipse Mars 1一起使用。

Answer 1

您需要通过

刷新并关闭编写器

writer.flush();
writer.close();

Java BufferedWriter文件内容为空

1 个答案: