resttemlate

package com.xjj;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import org.apache.commons.beanutils.BeanUtils;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.xjj.web.controller.LoginObj;

import net.minidev.json.JSONObject;

public class CMERestClient {
    TestRestTemplate restTemplate = new TestRestTemplate();

    public <T> T processRestJson(String url, String as, Class<T> t) {

        TestRestTemplate restTemplate = new TestRestTemplate();
        HttpEntity<String> entity = getJSONHttpEntityObj(as);
        T ss = restTemplate.postForObject(url, entity, t);
        return ss;
    }

    public <T> T processRestJsonObj(String url, T as, Class<T> t) {

        HttpEntity<T> entity = getJSONHttpEntityObj(as);
        T ss = restTemplate.postForObject(url, as, t);
        return ss;
    }

    public <T> List<T> processRestJsonList(String url, String as, Class<T> t) throws Exception {

        TestRestTemplate restTemplate = new TestRestTemplate();
        HttpEntity<String> entity = getJSONHttpEntity(as);
        List<Map> mapList = restTemplate.postForObject(url, entity, List.class);

        return convert(mapList, t);
    }

    public static <T> T mapToObject(Map map, Class<T> beanClass) throws Exception {

        T obj = beanClass.newInstance();
        BeanUtils.populate(obj, map);

        return obj;

    }

    public <T> List<T> convert(List<Map> mapList, Class<T> c) throws Exception {

        ObjectMapper b = new ObjectMapper();

        List<T> s = mapList.stream().map(p -> sss(c, p)).collect(Collectors.toList());

        return s;
    }

    private <T> T sss(Class<T> c, Map p) {
        T obj = null;
        try {
            obj = c.newInstance();
            BeanUtils.populate(obj, p);
            return obj;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return obj;
    }

    public <T> List<T> processRestJsonExchange(String url, String as, ParameterizedTypeReference<List<T>> typeRef) {

        TestRestTemplate restTemplate = new TestRestTemplate();
        HttpEntity<String> entity = getJSONHttpEntity(as);

        ResponseEntity<List<T>> responseEntity = restTemplate.exchange(url, HttpMethod.POST, entity, typeRef);
        List<T> myModelClasses = responseEntity.getBody();

        return myModelClasses;
    }

    public JSONObject processRestJson2(String url, String as) {

        TestRestTemplate restTemplate = new TestRestTemplate();
        HttpEntity<String> entity = getJSONHttpEntity(as);
        JSONObject ss = restTemplate.postForObject(url, entity, JSONObject.class);
        return ss;
    }

    public String createJSONParm(Map<String, String> a) {

        ObjectMapper b = new ObjectMapper();
        String as = null;
        try {
            as = b.writeValueAsString(a);
        } catch (JsonProcessingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return as;
    }

    public <T> String objToJSONString(T t) {

        ObjectMapper b = new ObjectMapper();
        String as = null;
        try {
            as = b.writeValueAsString(t);
        } catch (JsonProcessingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return as;
    }

    public <T> HttpEntity<T> getJSONHttpEntity(T as) {

        HttpHeaders headers2 = new HttpHeaders();
        MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
        headers2.setContentType(type);
        headers2.add("Accept", MediaType.APPLICATION_JSON.toString());

        HttpEntity<T> entity = new HttpEntity<T>(as, headers2);
        return entity;
    }

    public <T> HttpEntity<T> getJSONHttpEntityObj(T as) {

        HttpHeaders headers2 = new HttpHeaders();
        MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
        headers2.setContentType(type);
        headers2.add("Accept", MediaType.APPLICATION_JSON.toString());

        HttpEntity<T> entity = new HttpEntity<T>(as, headers2);
        return entity;
    }
}