带有#param 的 curl 请求示例转换为 Java POST 请求

Question

I am creating API to send messages to SMS Server. API is based on HTTP and JSON. Documentation takes cURL as an example I need convert it to JAVA.

Request:

POST https://gateway_ip/api/send_sms

Example Request with #param:

curl -k --anyauth -u admin:admin -d
'{"text":"#param#","port":[2,3],"param":[{"number":"10086","te
xt_param":["bj"],"user_id":1},{"number":"10086",
"text_param":["ye"],"user_id":2}]}' -H "Content-Type:
application/json" https://gateway_ip/api/send_sms

First I create model that take phone number, massage text and setup port

class Model {
        private final String number;
        private final String port;
        private final String text;

        public Model(String number, String text) {
            this.number = number;
            this.port = "[0]";
            this.text = text;
        }

        public String getNumber() {
            return number;
        }

        public String getPort() {
            return port;
        }

        public String getText() {
            return text;
        }
    }

JSON generator:

private static String toJsonString(List<Model> model) {

        StringWriter jsonObjectWriter = null;
        try {
            com.fasterxml.jackson.core.JsonFactory jsonFactory = new com.fasterxml.jackson.core.JsonFactory();
            jsonObjectWriter = new StringWriter();
            JsonGenerator generator = jsonFactory.createGenerator(jsonObjectWriter);
            generator.setPrettyPrinter(new DefaultPrettyPrinter());

            generator.writeStartObject();
            generator.writeStringField("text", "#param#");
            generator.writeStringField("port", "[0]");
            toJsonString(generator, model);
            generator.writeEndObject();
            generator.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return jsonObjectWriter.toString();
    }

    private static void toJsonString(final JsonGenerator generator, final List<Model> model) throws IOException{

        generator.writeFieldName("param");
        generator.writeStartArray();
        for (final Model m : model) {
            generator.writeStartObject();
            generator.writeStringField("number", m.getNumber());
            toJsonString(generator, m.getText());
            generator.writeEndObject();
        }
        generator.writeEndArray();

    }

    private static void toJsonString(final JsonGenerator generator, String text) throws IOException{

        generator.writeFieldName("text_param");
        generator.writeStartArray();
        generator.writeString(text);
        generator.writeEndArray();

    }

Headers with authentication - I am not sure if I should include authentication.

private HttpHeaders createHeadersWithAuthentication() {

        String credentials = login + ":" + password;
        byte[] credentialsBytes = Base64.getEncoder().encode(credentials.getBytes());
        String base64Credentials = new String(credentialsBytes);
        HttpHeaders headers = new HttpHeaders();
        headers.add("Authorization", "Basic " + base64Credentials);
        return headers;
    }

Execution

public ResponseEntity sendSMSMessage(String phoneNumber, String message) {

        Model model = new Model(phoneNumber, message);
        List<Model> modelList = new ArrayList<>();
        modelList.add(model);
        String createJson = toJsonString(modelList);

        // "https://xx.xx.xx.xx/api/send_sms";
        String url = urlConfig;

        // "Content-Type: application/json"
        httpHeaders.setContentType(MediaType.APPLICATION_JSON);
        HttpEntity<String> requestEntity = new HttpEntity<String>(createJson, httpHeaders);

        return restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class);
    }

I am not sure what I did wrong. From command line example from doc working fine but from my Java Code there is no output. Nothing was send to Sms Server. From debuger Json looks fine.

Appreciate for any hints and correction.

Answer 1

I am creating API to send messages to SMS Server. API is based on HTTP and JSON. Documentation takes cURL as an example I need convert it to JAVA.

Request:

POST https://gateway_ip/api/send_sms

Example Request with #param:

curl -k --anyauth -u admin:admin -d
'{"text":"#param#","port":[2,3],"param":[{"number":"10086","te
xt_param":["bj"],"user_id":1},{"number":"10086",
"text_param":["ye"],"user_id":2}]}' -H "Content-Type:
application/json" https://gateway_ip/api/send_sms

First I create model that take phone number, massage text and setup port

class Model {
        private final String number;
        private final String port;
        private final String text;

        public Model(String number, String text) {
            this.number = number;
            this.port = "[0]";
            this.text = text;
        }

        public String getNumber() {
            return number;
        }

        public String getPort() {
            return port;
        }

        public String getText() {
            return text;
        }
    }

JSON generator:

private static String toJsonString(List<Model> model) {

        StringWriter jsonObjectWriter = null;
        try {
            com.fasterxml.jackson.core.JsonFactory jsonFactory = new com.fasterxml.jackson.core.JsonFactory();
            jsonObjectWriter = new StringWriter();
            JsonGenerator generator = jsonFactory.createGenerator(jsonObjectWriter);
            generator.setPrettyPrinter(new DefaultPrettyPrinter());

            generator.writeStartObject();
            generator.writeStringField("text", "#param#");
            generator.writeStringField("port", "[0]");
            toJsonString(generator, model);
            generator.writeEndObject();
            generator.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return jsonObjectWriter.toString();
    }

    private static void toJsonString(final JsonGenerator generator, final List<Model> model) throws IOException{

        generator.writeFieldName("param");
        generator.writeStartArray();
        for (final Model m : model) {
            generator.writeStartObject();
            generator.writeStringField("number", m.getNumber());
            toJsonString(generator, m.getText());
            generator.writeEndObject();
        }
        generator.writeEndArray();

    }

    private static void toJsonString(final JsonGenerator generator, String text) throws IOException{

        generator.writeFieldName("text_param");
        generator.writeStartArray();
        generator.writeString(text);
        generator.writeEndArray();

    }

Headers with authentication - I am not sure if I should include authentication.

private HttpHeaders createHeadersWithAuthentication() {

        String credentials = login + ":" + password;
        byte[] credentialsBytes = Base64.getEncoder().encode(credentials.getBytes());
        String base64Credentials = new String(credentialsBytes);
        HttpHeaders headers = new HttpHeaders();
        headers.add("Authorization", "Basic " + base64Credentials);
        return headers;
    }

Execution

public ResponseEntity sendSMSMessage(String phoneNumber, String message) {

        Model model = new Model(phoneNumber, message);
        List<Model> modelList = new ArrayList<>();
        modelList.add(model);
        String createJson = toJsonString(modelList);

        // "https://xx.xx.xx.xx/api/send_sms";
        String url = urlConfig;

        // "Content-Type: application/json"
        httpHeaders.setContentType(MediaType.APPLICATION_JSON);
        HttpEntity<String> requestEntity = new HttpEntity<String>(createJson, httpHeaders);

        return restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class);
    }

I am not sure what I did wrong. From command line example from doc working fine but from my Java Code there is no output. Nothing was send to Sms Server. From debuger Json looks fine.

Appreciate for any hints and correction.