SpringBoot：简述如何使用RestTemplate进行接口请求

比眉伴天荒 2022-01-26 07:47 221阅读 0赞

## 一、GET请求 ##

## 1.1 getForObject(URI url, Class responseType) ##

@Override
    public <T> T getForObject(URI url, Class<T> responseType) throws RestClientException {
        RequestCallback requestCallback = acceptHeaderRequestCallback(responseType);
        HttpMessageConverterExtractor<T> responseExtractor = new HttpMessageConverterExtractor<T>(responseType, getMessageConverters(), logger);
        return execute(url, HttpMethod.GET, requestCallback, responseExtractor);
    }

## 1.2 getForObject(String url, Class responseType, Map<String, ?> uriVariables) ##

@Override
    public <T> T getForObject(String url, Class<T> responseType, Map<String, ?> uriVariables) throws RestClientException {
        RequestCallback requestCallback = acceptHeaderRequestCallback(responseType);
        HttpMessageConverterExtractor<T> responseExtractor = new HttpMessageConverterExtractor<T>(responseType, getMessageConverters(), logger);
        return execute(url, HttpMethod.GET, requestCallback, responseExtractor, uriVariables);
    }

## 1.3 getForObject(String url, Class responseType, Object… uriVariables) ##

@Override
    public <T> T getForObject(String url, Class<T> responseType, Object... uriVariables) throws RestClientException {
        RequestCallback requestCallback = acceptHeaderRequestCallback(responseType);
        HttpMessageConverterExtractor<T> responseExtractor = new HttpMessageConverterExtractor<T>(responseType, getMessageConverters(), logger);
        return execute(url, HttpMethod.GET, requestCallback, responseExtractor, uriVariables);
    }

## 1.4 getForEntity(URI url, Class responseType) ##

@Override
    public <T> ResponseEntity<T> getForEntity(URI url, Class<T> responseType) throws RestClientException {
        RequestCallback requestCallback = acceptHeaderRequestCallback(responseType);
        ResponseExtractor<ResponseEntity<T>> responseExtractor = responseEntityExtractor(responseType);
        return execute(url, HttpMethod.GET, requestCallback, responseExtractor);
    }

## 1.5 getForEntity(String url, Class responseType, Map<String, ?> uriVariables) ##

@Override
    public <T> ResponseEntity<T> getForEntity(String url, Class<T> responseType, Map<String, ?> uriVariables) throws RestClientException {
        RequestCallback requestCallback = acceptHeaderRequestCallback(responseType);
        ResponseExtractor<ResponseEntity<T>> responseExtractor = responseEntityExtractor(responseType);
        return execute(url, HttpMethod.GET, requestCallback, responseExtractor, uriVariables);
    }

## 1.6 getForEntity(String url, Class responseType, Object… uriVariables) ##

@Override
    public <T> ResponseEntity<T> getForEntity(String url, Class<T> responseType, Object... uriVariables) throws RestClientException {
        RequestCallback requestCallback = acceptHeaderRequestCallback(responseType);
        ResponseExtractor<ResponseEntity<T>> responseExtractor = responseEntityExtractor(responseType);
        return execute(url, HttpMethod.GET, requestCallback, responseExtractor, uriVariables);
    }

## 二、HEAD请求 ##

## 2.1 headForHeaders(URI url) ##

@Override
    public HttpHeaders headForHeaders(URI url) throws RestClientException {
        return execute(url, HttpMethod.HEAD, null, headersExtractor());
    }

## 2.2 headForHeaders(String url, Map<String, ?> uriVariables) ##

@Override
    public HttpHeaders headForHeaders(String url, Map<String, ?> uriVariables) throws RestClientException {
        return execute(url, HttpMethod.HEAD, null, headersExtractor(), uriVariables);
    }

## 2.3 headForHeaders(String url, Object… uriVariables) ##

@Override
    public HttpHeaders headForHeaders(String url, Object... uriVariables) throws RestClientException {
        return execute(url, HttpMethod.HEAD, null, headersExtractor(), uriVariables);
    }

## 三、PUT请求 ##

## 3.1 put(URI url, Object request) ##

@Override
    public void put(URI url, Object request) throws RestClientException {
        RequestCallback requestCallback = httpEntityCallback(request);
        execute(url, HttpMethod.PUT, requestCallback, null);
    }

## 3.2 put(String url, Object request, Map<String, ?> uriVariables) ##

@Override
    public void put(String url, Object request, Map<String, ?> uriVariables) throws RestClientException {
        RequestCallback requestCallback = httpEntityCallback(request);
        execute(url, HttpMethod.PUT, requestCallback, null, uriVariables);
    }

## 3.3 put(String url, Object request, Object… uriVariables) ##

@Override
    public void put(String url, Object request, Object... uriVariables) throws RestClientException {
        RequestCallback requestCallback = httpEntityCallback(request);
        execute(url, HttpMethod.PUT, requestCallback, null, uriVariables);
    }

待补充。。。。。