RestTemplate跨域调用

1.设置配置类

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Bean
    public RestTemplate restTemplate(RestTemplateBuilder builder) {
        return builder.build();
    }
}

2.Controller调用

@Autowired
	private RestTemplate restTemplate;
//方式一
MultiValueMap<String, String> requestEntity = new LinkedMultiValueMap<>();
			requestEntity.add("merchantOrderId", merchantOrderId);
			String httpStatus = restTemplate.postForObject(merchantReturnUrl, requestEntity, String.class);
//方式二
  MerchantOrdersVO merchantOrdersVO = orderVO.getMerchantOrdersVO();
        merchantOrdersVO.setReturnUrl(payReturnUrl);

        // 为了方便测试购买，所以所有的支付金额都统一改为1分钱
        merchantOrdersVO.setAmount(1);

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        headers.add("imoocUserId","imooc");
        headers.add("password","imooc");

        HttpEntity<MerchantOrdersVO> entity =
                new HttpEntity<>(merchantOrdersVO, headers);

        ResponseEntity<IMOOCJSONResult> responseEntity =
                restTemplate.postForEntity(paymentUrl,
                                            entity,
                                            IMOOCJSONResult.class);
        IMOOCJSONResult paymentResult = responseEntity.getBody();

最后

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