I tried to make a client of RESAS-API in Java

I wrote a client for RESAS API in Java

I have various data published by RESAS API, It's hard to get the data.

And once I made it, I thought it would be more convenient to share it with everyone. just made it. And I published it on github, but I can not find it so much, so I made an article.

• Note: Only RESAS is supported, and corporate info is not yet supported.

RESAS-Client Java It is posted on github, so please git clone it from here or download it as a zip and use it.

https://github.com/code4nagoya/resas-client

Link to RESAS API list

https://opendata.resas-portal.go.jp/docs/api/v1/index.html https://opendata.resas-portal.go.jp/docs/api/v1/detail/index.html

Simple usage explanation Taking the number of inland fishing boats as an example

Each class has a Request and a Result, and a test class. It's a test class, and I've just seen myself test it by hand. Please as a sample (Please note that some test classes are organized, Sumanu (-people-;))

The class name and variables are created based on the URL for sending and receiving the RESAS API.

It has a name along the URL and a class like Request / Result / RequetTest.

If you want to get the data from the API of the number of inland fishing boats, the URL will be as follows.

• api/v1/fishery/riverBoat/forStacked

Since the class name is created according to the URL, the class is named FisheryRiverBoatForStacked ***.

In the *** part, the class with the parameters for sending is Request, and the class with the parameters for receiving is Result.

-Class with HTTP request parameters FisheryRiverBoatForStackedRequest -Received class FisheryRiverBoatForStackedResult -Send class used in the test FisheryRiverBoatForStackedRequestTest

Send and API keys

To send, use the following class.

• Class that makes a request for ResasHttpAccess http Pass the Request url and parameters to sendString. There is a place to write the API key in this class, but at runtime, pass it as a java argument in the form of -DXPIKEY = ******.

• Class that sets the ResasUtil parameter Pass the parameter name and value listed in Request to Request respectively.

Try to match

Have me git clone Take a look at the FisheryRiverBoatForStackedRequestTest.

There is a sample in the test class, so please take a look. The following is an excerpt.

python

	@Test
	public void test() throws ParseException, IOException {
		ObjectMapper om = new ObjectMapper();

		List<String> paramNames = new ArrayList<String>();
		paramNames.add("prefCode");

		List<String> paramValues = new ArrayList<String>();

		paramValues.add("1");

		StringBuffer params = ResasUtil.addParameters(paramNames, paramValues);

		String result = ResasHttpAccess.sendString("api/v1" + FisheryRiverBoatForStackedRequest.url, params.toString());

		System.out.println(result);
		FisheryRiverBoatForStackedResult resultData = om.readValue(result,
				FisheryRiverBoatForStackedResult.class);

FisheryRiverBoatForStacked a = resultData.getResult();
　　　　}

Finally

There is a general class, so please use it. Also, there are still many things that can be abstracted and easily done, so we look forward to your requests and help.

(゜ ∀ ゜) I hope the local area will be a wonderful city