le-annen.javaserver.0.1.source-code.ControllerPost Maven / Gradle / Ivy

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A minimal java http server which fulfills small portions of the http specifications. This is not a full fledged or secure server. It should only be used for learning purposes and contains no guarantees of any king.

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import java.io.*;
import java.net.URLDecoder;
import java.util.HashMap;

class ControllerPost implements ControllerInterface {
  @Override
  public ResponseParameters getResponse(RequestParameters requestParams) throws IOException {
    HashMap formData = this.parseFormData(requestParams.getBodyContent());
    String formContent = this.formatFormData(formData);
    return new ResponseParameters.ResponseBuilder(200)
            .setDate()
            .setContentLength(formContent)
            .setContentType(formContent)
            .setBodyType(formContent)
            .setBodyContent(formContent)
            .build();
  }

  HashMap parseFormData(String bodyContent) throws UnsupportedEncodingException {
    String[] formFields = bodyContent.split("&");
    HashMap formData = new HashMap<>();
    for(String field: formFields) {
      String[] fieldKeyValue = field.split("=");
      formData.put(URLDecoder.decode(fieldKeyValue[0], "UTF-8").trim(),
              URLDecoder.decode(fieldKeyValue[1], "UTF-8").trim());
    }
    return formData;
  }

  String formatFormData(HashMap formData) throws IOException {
    StringBuilder stringBuilder = new StringBuilder();
    stringBuilder.append("\n" +
            "\n" +
            "\n" +
            "\n" +
            "Title of the document\n" +
            "\n" +
            "\n" +
            "");
    for (String key: formData.keySet()) {
      String value = formData.get(key);
      stringBuilder.append("" + key + ": " + value + "");
    }
    stringBuilder.append("\n" + "\n" + "");
    return stringBuilder.toString();
  }
}