{"id":1755,"date":"2023-03-26T21:32:28","date_gmt":"2023-03-26T13:32:28","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1755"},"modified":"2023-04-23T21:26:38","modified_gmt":"2023-04-23T13:26:38","slug":"using-parameterizedtypereference-in-resttemplate-to-parameterize-types-and-support-generics","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/26\/using-parameterizedtypereference-in-resttemplate-to-parameterize-types-and-support-generics\/","title":{"rendered":"RestTemplate\u4e2d\u4f7f\u7528ParameterizedTypeReference\u53c2\u6570\u5316\u7c7b\u578b\u652f\u6301\u6cdb\u578b"},"content":{"rendered":"<p>\u4f7f\u7528\u666e\u901a\u7684<code>RestTemplate.postForObject<\/code>\u662f\u65e0\u6cd5\u77e5\u9053\u6cdb\u578b\u7684\u5177\u4f53\u7c7b\u578b\u7684\uff0c\u9700\u8981\u501f\u52a9<code>ParameterizedTypeReference<\/code>\u53c2\u6570\u5316\u7c7b\u578b<\/p>\n<pre><code class=\"language-java\">public &lt;T&gt; T post(String url, @NotNull HttpEntity requestEntity, ParameterizedTypeReference&lt;T&gt; parameterizedTypeReference) {\n    ResponseEntity&lt;T&gt; responseEntity = restTemplate.exchange(\n            url,\n            HttpMethod.POST,\n            requestEntity,\n            parameterizedTypeReference\n    );\n    return responseEntity.getBody();\n}\n\nParameterizedTypeReference&lt;TestModelType&lt;List&lt;TestModelBody&gt;&gt;&gt; parameterizedTypeReference = \n    new ParameterizedTypeReference&lt;TestModelType&lt;List&lt;TestModelBody&gt;&gt;&gt;() {};\nTestModelType&lt;List&lt;TestModelBody&gt;&gt; listTestModelType = \n    restTemplateUtils.get(testUrl, parameterizedTypeReference);<\/code><\/pre>\n<p><!-- more --><\/p>\n<p>FastJson\u53cd\u5e8f\u5217\u5316\u4e5f\u652f\u6301\u6cdb\u578b\uff1a<\/p>\n<pre><code class=\"language-java\">import com.alibaba.fastjson.JSONObject;\nimport com.alibaba.fastjson.TypeReference;\n\nString jsonString = jsonStringEntity.getBody();\nT body = JSONObject.parseObject(jsonString, clazz); \/\/ \u76f4\u63a5\u4f20Class\u4e0d\u80fd\u786e\u5b9a\u6cdb\u578b\nJSONObject.parseObject(\n    jsonString, \n    new TypeReference&lt;TestModelType&lt;List&lt;TestModelBody&gt;&gt;&gt;(){}\n);<\/code><\/pre>\n<p>\u66f4\u591a\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-java\">HttpEntity&lt;ChannelsPayRequest&gt; requestEntity = new HttpEntity&lt;&gt;(request, getHttpHeaders());\nParameterizedTypeReference&lt;Result&lt;ChannelsPayResponse&gt;&gt; parameterizedTypeReference =\n        new ParameterizedTypeReference&lt;Result&lt;ChannelsPayResponse&gt;&gt;() {};\nResponseEntity&lt;Result&lt;ChannelsPayResponse&gt;&gt; responseEntity = restTemplate.exchange(String.format(&quot;http:\/\/%s\/channels\/pay&quot;, channelService.getServiceAppName()),\n        HttpMethod.POST, requestEntity, parameterizedTypeReference);\nResult&lt;ChannelsPayResponse&gt; payResult = responseEntity.getBody();\nlog.info(JSON.toJSONString(payResult));<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528\u666e\u901a\u7684RestTemplate.postForObject\u662f\u65e0\u6cd5\u77e5\u9053\u6cdb\u578b\u7684\u5177\u4f53\u7c7b\u578b\u7684\uff0c\u9700\u8981\u501f\u52a9Parame [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41],"tags":[253],"class_list":["post-1755","post","type-post","status-publish","format-standard","hentry","category-spring-boot","tag-resttemplate"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1755","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1755"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1755\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}