RestTemplate：如何一起发送URL和查询参数

  • Z时代
  • 2024-01-10
  • 分类：问答

我正在尝试在URL中传递路径参数和查询参数，但出现一个奇怪的错误。下面是代码

    String url = "http://test.com/Services/rest/{id}/Identifier"
    Map<String, String> params = new HashMap<String, String>();
    params.put("id", "1234");
    UriComponentsBuilder builder = UriComponentsBuilder.fromUriString(url)
                                        .queryParam("name", "myName");
    String uriBuilder = builder.build().encode().toUriString();
    restTemplate.exchange(uriBuilder , HttpMethod.PUT, requestEntity,
                    class_p, params);

我的网址正在变成 http://test.com/Services/rest/%7Bid%7D/Identifier?name=myName

我应该怎么做才能使其正常工作。我期望http://test.com/Services/rest/{id}/Identifier?name=myName参数可以将id添加到网址中

请提出建议。提前致谢

回答：

我将使用buildAndExpandfrom UriComponentsBuilder来传递所有类型的URI参数。

例如：

String url = "http://test.com/solarSystem/planets/{planet}/moons/{moon}";
// URI (URL) parameters
Map<String, String> urlParams = new HashMap<>();
urlParams.put("planets", "Mars");
urlParams.put("moons", "Phobos");
// Query parameters
UriComponentsBuilder builder = UriComponentsBuilder.fromUriString(url)
        // Add query parameter
        .queryParam("firstName", "Mark")
        .queryParam("lastName", "Watney");
System.out.println(builder.buildAndExpand(urlParams).toUri());
/**
 * Console output:
 * http://test.com/solarSystem/planets/Mars/moons/Phobos?firstName=Mark&lastName=Watney
 */
restTemplate.exchange(builder.buildAndExpand(urlParams).toUri() , HttpMethod.PUT,
        requestEntity, class_p);
/**
 * Log entry:
 * org.springframework.web.client.RestTemplate Created PUT request for "http://test.com/solarSystem/planets/Mars/moons/Phobos?firstName=Mark&lastName=Watney"
 */

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