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5.9. String boot with RestTemplate

RestTemplate 是 Spring Restful Client 用於調用restful介面

5.9.1. 在控製器中完整實例

			
package api.web;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.client.RestTemplate;

import api.domain.City;
import api.repository.CityRepository;

@Controller
public class IndexController {

	@Autowired
	private CityRepository repository;

	// Spring RESTFul Client
	
	@RequestMapping("/restful/get")
	@ResponseBody
	public String restfulGet() {
		RestTemplate restTemplate = new RestTemplate();
		String text = restTemplate.getForObject("http://inf.netkiller.cn/detail/html/2/2/42564.html", String.class);
		return text;
	}

	@RequestMapping("/restful/get/{id}")
	@ResponseBody
	private static String restfulGetId(@PathVariable String id) {
		final String uri = "http://inf.netkiller.cn/detail/html/{tid}/{cid}/{id}.html";

		Map<String, String> params = new HashMap<String, String>();
		params.put("tid", "2");
		params.put("cid", "2");
		params.put("id", id);
		RestTemplate restTemplate = new RestTemplate();
		String result = restTemplate.getForObject(uri, String.class, params);

		return (result);
	}

	@RequestMapping("/restful/post/{id}")
	@ResponseBody
	private static String restfullPost(@PathVariable String id) {

		final String uri = "http://inf.netkiller.cn/detail/html/{tid}/{cid}/{id}.html";

		Map<String, String> params = new HashMap<String, String>();
		params.put("tid", "2");
		params.put("cid", "2");
		params.put("id", id);

		City city = new City("Shenzhen", "Guangdong");

		RestTemplate restTemplate = new RestTemplate();
		String result = restTemplate.postForObject(uri, city, String.class, params);
		return result;
	}

	@RequestMapping("/restful/put/{id}")
	private static void restfulPut(@PathVariable String id) {
		final String uri = "http://inf.netkiller.cn/detail/html/{tid}/{cid}/{id}.html";

		Map<String, String> params = new HashMap<String, String>();
		params.put("id", id);

		City city = new City("Shenzhen", "Guangdong");

		RestTemplate restTemplate = new RestTemplate();
		restTemplate.put(uri, city, params);
	}

	@RequestMapping("/restful/delete/{id}")
	private static void restfulDelete(@PathVariable String id) {
		final String uri = "http://inf.netkiller.cn/detail/html/{tid}/{cid}/{id}.html";

		Map<String, String> params = new HashMap<String, String>();
		params.put("id", id);

		RestTemplate restTemplate = new RestTemplate();
		restTemplate.delete(uri, params);
	}
}