RestTemplate通过http的get或post访问本机接口

get请求

我在做junit的单元测试测试本机的接口时通过http来访问后台接口，下面讲一下将消息体ApiHeader封装在头部，还有类似URL为http://localhost:8080/api/User/Login?user=…&password=…这种形式的访问方法：
首先创建一个HttpClients类

@Service
public class HttpClients {
    HttpHeaders headers;

    public JSONObject sendGet(String url, JSONObject headerData,JSONObject body){
        //请求头
        headers = new HttpHeaders();
        //设置请求内容为JSON类型
        headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
        if(headerData != null){
            // header填充
            headers.add("ApiHeader", headerData.toString());
        }
        RestTemplate restTemplate = new RestTemplate();
        //创建请求实体对象
        if(body!= null){
            //获取JSONObject 中的key的值用迭代器遍历
            Iterator<String> it = body.keys();
            url = url+"?";
            while(it.hasNext()){
                // 获得key
                String key = it.next();
                String value = body.getString(key);
                url = url + key + "="+value;
                if(it.hasNext()){
                    url=url+"&";
                }
            }
            System.out.println(url);
        }
        HttpEntity<JSONObject> request = new HttpEntity<JSONObject>(body,headers);//将参数和header组成一个请求
        //我尝试用这样的方法访问但是不能成功
        //ResponseEntity<JSONObject> response = restTemplate.getForEntity(url, JSONObject.class,request);
        ResponseEntity<JSONObject> response =restTemplate.exchange(url, HttpMethod.GET, request, JSONObject.class);
        JSONObject requestData = response.getBody();
        return requestData;
    }
}

POST请求

但是在新增用户时字段比较多时，往往会采用传递请求体（Body）的方式，对请求进行一定的设置进行POST请求。下面是我的代码：

public JSONObject sendPost(String url, JSONObject headerData,JSONObject bodydata){
        //请求头
        headers = new HttpHeaders();
        //设置请求内容为JSON类型
        headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
        if(headerData != null){
            // header填充
            headers.add("ApiHeader", headerData.toString());
        }
        //创建请求实体对象
        HttpEntity<JSONObject> request = new HttpEntity<>(bodydata,headers);

        RestTemplate restTemplate = new RestTemplate();
        System.out.println(request);
        ResponseEntity<JSONObject> requestEntity= restTemplate.postForEntity(url,request,JSONObject.class);
        JSONObject requestData = requestEntity.getBody();
       /* //获取响应头
        HttpHeaders respHeaders = requestEntity.getHeaders();
        //获取响应属性
        respHeaders.get("success");
        //响应的HTTP状态码
        int status = requestEntity.getStatusCodeValue();*/
        return requestData;
    }

测试

接下来我用junit的单元测试的方法来测试一下：
这是单元测试类的代码：

class HttpPostetmfTest {


    public static final String URL = "http://localhost:8080";
    HttpData httpData;
    HttpClients httpClients;

    @BeforeEach
    void setUp() {
        httpData= new HttpData ();
        httpClients = new HttpClients();
    }

	@Test
    void RefreshToken() {
        JSONObject postLogin = httpClients.sendPost(URL+"/api/User/Login",null,
                                                        httpData.api_User_Login());
        JSONObject refreshToken = httpClients.sendPost(URL+"/api/User/RefreshToken",
                                                        httpData.api_Config_CompanyConfigGet(postLogin),
                                                        httpData.api_User_RefreshToken(postLogin));
        System.out.println(refreshToken);
        assertNotNull(refreshToken);

    }
}

下面是我想要传送的json数据：

public class HttpData 
{
    public JSONObject api_User_Login(){
        JSONObject request = new JSONObject();
        request.put("UserName","...");
        request.put("PassWord","...");
        return request;
    }

   public JSONObject api_User_RefreshToken(JSONObject postresults){
        JSONObject jsonObject = JSONObject.fromObject(postresults);
        JSONObject request = new JSONObject();
        request.put("LanguageType","utf8");
        //从postresults中取出需要的数据封装刷新需要的数据
        JSONArray data = jsonObject.getJSONObject("Result").getJSONArray("Items");
        JSONObject row = null;
        for(int i=0; i<data.size(); i++){
            row = data.getJSONObject(i);
            request.put("Id",row.get("Id"));
            break;
        }
        return request;
    }
}

get的测试也和post请求相差不大这里就不进行过多的演示，就是根据接口的需要调用sendGet和sendPost。

pom.xml需要引入的依赖

//junit5的依赖
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-api</artifactId>
    <version>5.3.2</version>
    <scope>test</scope>
</dependency>
//JSON依赖
<dependency>
   <groupId>net.sf.json-lib</groupId>
   <artifactId>json-lib</artifactId>
   <version>2.4</version>
   <classifier>jdk15</classifier>
</dependency>