RestTemplate:如何将 URL 和查询参数一起发送 [英] RestTemplate: How to send URL and query parameters together

问题描述

我试图在 URL 中传递路径参数和查询参数，但我收到一个奇怪的错误.下面是代码

I am trying to pass path param and query params in a URL but I am getting a weird error. below is the code

    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);

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

我该怎么做才能让它发挥作用.我期待 http://test.com/Services/rest/{id}/Identifier?name=myName 以便 params 将 id 添加到 url

what should I do to make it work. I am expecting http://test.com/Services/rest/{id}/Identifier?name=myName so that params will add id to the url

请推荐.提前致谢

推荐答案

我会使用 UriComponentsBuilder 中的 buildAndExpand 来传递所有类型的 URI 参数.

I would use buildAndExpand from UriComponentsBuilder to pass all types of URI parameters.

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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