【HTTP】使用 RestTemplete 實現 post請求

如上圖，要求：

1. post請求;
2. x-www-form-urlencoded 類型;

以下代碼沒有進行整理，可是測試OK

package com.chinamobile.epic.http;

import com.chinamobile.epic.model.GraphiteResultModel;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.http.*;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;

import java.io.IOException;
import java.util.List;

public class RestTempleteTest {
    public static void main(String[] args) throws IOException {
        RestTemplate restTemplate = new RestTemplate();

        String endpoint = "http://10.254.3.92:5001/render";
        String target = "YFQ.vm.{0003d969-3fde-432f-898a-09456e5527af,002badb2-79ae-43e3-9dea-9618edea6b54}.cpu.cpu.percent.util";
        String format = "json";
        String from = "-10min";
        String until = "now";

        System.out.println("=================================================");
        // 設置請求體參數
        MultiValueMap<String, String> bodyMap = new LinkedMultiValueMap<String, String>();
        bodyMap.add("target", target);
        bodyMap.add("format", format);
        bodyMap.add("from", from);
        bodyMap.add("until", until);

        // 設置請求頭
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(bodyMap, headers);

        //進行HTTP請求
        ResponseEntity<String> model = restTemplate.exchange(endpoint, HttpMethod.POST, request, String.class);
        String response = model.getBody();

        // 轉換請求結果
        ObjectMapper mapper = new ObjectMapper();
        List<GraphiteResultModel> graphiteResultModels = mapper.readValue(response, new TypeReference<List<GraphiteResultModel>>() {
        });

        System.out.println("================");
        System.out.println(graphiteResultModels.toString());
    }

}

轉換結果的類

package com.chinamobile.epic.model;

import com.google.common.base.Splitter;
import org.springframework.util.CollectionUtils;

import java.util.List;

public class GraphiteResultModel {
    private String target;     //示例：summarize(clm.pm.10_144_202_142.agg.cpu.percent-avg.system,'10min','avg',true)
    private List<List<Object>> datapoints;

    public String getTarget() {
        return target;
    }

    public void setTarget(String target) {
        this.target = target;
    }

    public List<List<Object>> getDatapoints() {
        return datapoints;
    }

    public void setDatapoints(List<List<Object>> datapoints) {
        this.datapoints = datapoints;
    }

}