{"id":11860,"date":"2023-08-17T11:03:33","date_gmt":"2023-08-17T03:03:33","guid":{"rendered":"http:\/\/92it.top\/?p=11860"},"modified":"2023-08-17T11:06:42","modified_gmt":"2023-08-17T03:06:42","slug":"spring%e4%b9%8bresttemplate%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=11860","title":{"rendered":"Spring\u4e4bRestTemplate\u8be6\u89e3"},"content":{"rendered":"\n

\u5f15\u8a00<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u73b0\u5982\u4eca\u7684 IT<\/code> \u9879\u76ee\uff0c\u7531\u670d\u52a1\u7aef\u5411\u5916\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\u7684\u573a\u666f\uff0c\u57fa\u672c\u4e0a\u5904\u5904\u53ef\u89c1\uff01
\u4f20\u7edf\u60c5\u51b5\u4e0b\uff0c\u5728\u670d\u52a1\u7aef\u4ee3\u7801\u91cc\u8bbf\u95ee http<\/code> \u670d\u52a1\u65f6\uff0c\u4e00\u822c\u4f1a\u4f7f\u7528 JDK<\/code> \u7684 HttpURLConnection<\/code> \u6216\u8005 Apache<\/code> \u7684 HttpClient<\/code>\uff0c\u4e0d\u8fc7\u8fd9\u79cd\u65b9\u6cd5\u4f7f\u7528\u8d77\u6765\u592a\u8fc7\u7e41\u7410\uff0c\u800c\u4e14 api<\/code> \u4f7f\u7528\u8d77\u6765\u975e\u5e38\u7684\u590d\u6742\uff0c\u8fd8\u5f97\u64cd\u5fc3\u8d44\u6e90\u56de\u6536\u3002<\/p>\n\n\n\n

\u4ee5\u4e0b\u8f7d\u6587\u4ef6\u4e3a\u4f8b\uff0c\u901a\u8fc7 Apache<\/code> \u7684 HttpClient<\/code>\u65b9\u5f0f\u8fdb\u884c\u4e0b\u8f7d\u6587\u4ef6\uff0c\u4f1a\u5f88\u590d\u6742
\u5176\u5b9eSpring<\/code>\u5df2\u7ecf\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u4fbf\u6377\u7684\u6a21\u677f\u7c7b\u6765\u8fdb\u884c\u64cd\u4f5c\uff0c\u5b83\u5c31\u662fRestTemplate<\/code><\/p>\n\n\n\n

RestTemplate<\/code>\u662f\u4e00\u4e2a\u6267\u884cHTTP<\/code>\u8bf7\u6c42\u7684\u540c\u6b65\u963b\u585e\u5f0f\u5de5\u5177\u7c7b\uff0c\u5b83\u4ec5\u4ec5\u53ea\u662f\u5728 HTTP<\/code> \u5ba2\u6237\u7aef\u5e93\uff08\u4f8b\u5982 JDK HttpURLConnection<\/code>\uff0cApache HttpComponents<\/code>\uff0cokHttp<\/code> \u7b49\uff09\u57fa\u7840\u4e0a\uff0c\u5c01\u88c5\u4e86\u66f4\u52a0\u7b80\u5355\u6613\u7528\u7684\u6a21\u677f\u65b9\u6cd5 API\uff0c\u65b9\u4fbf\u7a0b\u5e8f\u5458\u5229\u7528\u5df2\u63d0\u4f9b\u7684\u6a21\u677f\u65b9\u6cd5\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\u548c\u5904\u7406\uff0c\u80fd\u5f88\u5927\u7a0b\u5ea6\u4e0a\u63d0\u5347\u6211\u4eec\u7684\u5f00\u53d1\u6548\u7387<\/p>\n\n\n\n

\u73af\u5883\u914d\u7f6e<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u5728\u9879\u76ee\u4e2d\uff0c\u5f53\u6211\u4eec\u9700\u8981\u8fdc\u7a0b\u8c03\u7528\u4e00\u4e2a HTTP \u63a5\u53e3\u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u7528\u5230 RestTemplate \u8fd9\u4e2a\u7c7b\u3002\u8fd9\u4e2a\u7c7b\u662f Spring \u6846\u67b6\u63d0\u4f9b\u7684\u4e00\u4e2a\u5de5\u5177\u7c7b\u3002Spring \u5b98\u7f51\u5bf9\u5b83\u7684\u4ecb\u7ecd\u5982\u4e0b\uff1a<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u4ece\u4e0a\u9762\u7684\u4ecb\u7ecd\u4e2d\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\uff1aRestTemplate \u662f\u4e00\u4e2a\u540c\u6b65\u7684 Rest API \u5ba2\u6237\u7aef\u3002\u4e0b\u9762\u6211\u4eec\u5c31\u6765\u4ecb\u7ecd\u4e0b RestTemplate \u7684\u5e38\u7528\u529f\u80fd\u3002<\/p>\n\n\n\n

2.\u975eSpring\u73af\u5883\u4e0b\u4f7f\u7528RestTemplate<\/strong><\/p>\n\n\n\n

\u5982\u679c\u5f53\u524d\u9879\u76ee\u4e0d\u662fSpring<\/code>\u9879\u76ee\uff0c\u52a0\u5165spring-web<\/code>\u5305\uff0c\u5373\u53ef\u5f15\u5165RestTemplate<\/code>\u7c7b<\/p>\n\n\n\n

<dependency>\n  <groupId>org.springframework<\/groupId>\n  <artifactId>spring-web<\/artifactId>\n  <version>5.2.6.RELEASE<\/version>\n<\/dependency><\/pre>\n\n\n\n
\u7f16\u5199\u4e00\u4e2a\u5355\u5143\u6d4b\u8bd5\u7c7b\uff0c\u4f7f\u7528RestTemplate<\/code>\u53d1\u9001\u4e00\u4e2aGET<\/code>\u8bf7\u6c42\uff0c\u770b\u770b\u7a0b\u5e8f\u8fd0\u884c\u662f\u5426\u6b63\u5e38<\/p>\n\n\n\n
@Test\npublic void simpleTest() {\n    RestTemplate restTemplate = new RestTemplate();\n    String url = \"http:\/\/jsonplaceholder.typicode.com\/posts\/1\";\n    String str = restTemplate.getForObject(url, String.class);\n    System.out.println(str);\n}<\/pre>\n\n\n\n
3.Spring \u73af\u5883\u4e0b\u4f7f\u7528 RestTemplate<\/strong><\/p>\n\n\n\n
\u5982\u679c\u5f53\u524d\u9879\u76ee\u662fSpringBoot<\/code>\uff0c\u6dfb\u52a0\u5982\u4e0b\u4f9d\u8d56\u63a5\u53e3\uff01<\/p>\n\n\n\n
<dependency>\n    <groupId>org.springframework.boot<\/groupId>\n    <artifactId>spring-boot-starter-web<\/artifactId>\n<\/dependency><\/pre>\n\n\n\n
\u200b\u4f46\u662fSpring\u5e76\u6ca1\u6709\u5c06\u5176\u52a0\u5165SpringBean\u5bb9\u5668\u4e2d\uff0c\u9700\u8981\u6211\u4eec\u624b\u52a8\u52a0\u5165\uff0c\u56e0\u4e3a\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e00\u4e2aSpringboot\u914d\u7f6e\u7c7b\uff0c\u518d\u5728\u914d\u7f6e\u7c7b\u4e2d\u5c06\u6211\u4eec\u7684RestTemlate\u6ce8\u518c\u5230Bean\u5bb9\u5668\u4e2d<\/p>\n\n\n\n
 \u4f8b\u5982\uff1a\u5c06RestTemplate<\/code>\u914d\u7f6e\u521d\u59cb\u5316\u4e3a\u4e00\u4e2aBean<\/code><\/p>\n\n\n\n
@Configuration\npublic class RestTemplateConfig {\n    \/**\n     * \u6ca1\u6709\u5b9e\u4f8b\u5316RestTemplate\u65f6\uff0c\u521d\u59cb\u5316RestTemplate\n     * @return\n     *\/\n    @ConditionalOnMissingBean(RestTemplate.class)\n    @Bean\n    public RestTemplate restTemplate(){\n        RestTemplate restTemplate = new RestTemplate();\n        return restTemplate;\n    }\n}<\/pre>\n\n\n\n
\u6ce8\u610f\uff0c\u8fd9\u79cd\u521d\u59cb\u5316\u65b9\u6cd5\uff0c\u662f\u4f7f\u7528\u4e86JDK<\/code>\u81ea\u5e26\u7684HttpURLConnection<\/code>\u4f5c\u4e3a\u5e95\u5c42HTTP<\/code>\u5ba2\u6237\u7aef\u5b9e\u73b0\u3002<\/p>\n\n\n\n
\u5f53\u7136\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4fee\u6539RestTemplate<\/code>\u9ed8\u8ba4\u7684\u5ba2\u6237\u7aef\uff0c\u4f8b\u5982\u5c06\u5176\u6539\u6210HttpClient<\/code>\u5ba2\u6237\u7aef\uff0c\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n
@Configuration\npublic class RestTemplateConfig {\n\n    @ConditionalOnMissingBean(RestTemplate.class)\n    @Bean\n    public RestTemplate restTemplate(){\n        RestTemplate restTemplate = new RestTemplate(getClientHttpRequestFactory());\n        return restTemplate;\n    }\n\n    \/**\n     * \u4f7f\u7528HttpClient\u4f5c\u4e3a\u5e95\u5c42\u5ba2\u6237\u7aef\n     * @return\n     *\/\n    private ClientHttpRequestFactory getClientHttpRequestFactory() {\n        int timeout = 5000;\n        RequestConfig config = RequestConfig.custom()\n                .setConnectTimeout(timeout)\n                .setConnectionRequestTimeout(timeout)\n                .setSocketTimeout(timeout)\n                .build();\n        CloseableHttpClient client = HttpClientBuilder\n                .create()\n                .setDefaultRequestConfig(config)\n                .build();\n        return new HttpComponentsClientHttpRequestFactory(client);\n    }\n\n}\n<\/pre>\n\n\n\n
\u5728\u9700\u8981\u4f7f\u7528RestTemplate<\/code>\u7684\u4f4d\u7f6e\uff0c\u6ce8\u5165\u5e76\u4f7f\u7528\u5373\u53ef\uff01<\/p>\n\n\n\n
@Autowired\nprivate RestTemplate restTemplate;<\/pre>\n\n\n\n
\u4ece\u5f00\u53d1\u4eba\u5458\u7684\u53cd\u9988\uff0c\u548c\u7f51\u4e0a\u7684\u5404\u79cdHTTP<\/code>\u5ba2\u6237\u7aef\u6027\u80fd\u4ee5\u53ca\u6613\u7528\u7a0b\u5ea6\u8bc4\u6d4b\u6765\u770b\uff0cOkHttp<\/code> \u4f18\u4e8e Apache\u7684HttpClient<\/code>\u3001Apache\u7684HttpClient<\/code>\u4f18\u4e8eHttpURLConnection<\/code>\u3002<\/p>\n\n\n\n
\u56e0\u6b64\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u65b9\u5f0f\uff0c\u5c06\u5e95\u5c42\u7684http<\/code>\u5ba2\u6237\u7aef\u6362\u6210OkHttp<\/code><\/p>\n\n\n\n
\/**\n * \u4f7f\u7528OkHttpClient\u4f5c\u4e3a\u5e95\u5c42\u5ba2\u6237\u7aef\n * @return\n *\/\nprivate ClientHttpRequestFactory getClientHttpRequestFactory(){\n    OkHttpClient okHttpClient = new OkHttpClient.Builder()\n            .connectTimeout(5, TimeUnit.SECONDS)\n            .writeTimeout(5, TimeUnit.SECONDS)\n            .readTimeout(5, TimeUnit.SECONDS)\n            .build();\n    return new OkHttp3ClientHttpRequestFactory(okHttpClient);\n}\n<\/pre>\n\n\n\n
restTemplate\u7b80\u4ecb<\/strong><\/p>\n\n\n\n
\n\n\n\n
1.restTemplate\u7684\u7c7b\u7ed3\u6784<\/strong><\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u53ef\u4ee5\u770b\u51fa\u5b83\u7ee7\u627f\u81eaHttpAccessor\u8fd9\u4e2a\u7edf\u4e00\u7684\u5904\u7406\u5668\uff0c\u7136\u540e\u518d\u7ee7\u627f\u81eaInterceptingHttpAccessor\uff0c\u8fd9\u4e2a\u62e6\u622a\u8f6c\u6362\u5668\uff0c\u6700\u7ec8RestTemplate\u5b9e\u73b0\u4e86\u5c01\u88c5httpClient\u7684\u6a21\u677f\u5de5\u5177\u7c7b<\/p>\n\n\n\n
2.restTemplate\u7684\u65b9\u6cd5<\/strong><\/p>\n\n\n\n
Spring\u7528\u4e8e\u540c\u6b65\u5ba2\u6237\u7aefHTTP\u8bbf\u95ee\u7684\u4e2d\u5fc3\u7c7b\u3002\u5b83\u7b80\u5316\u4e86\u4e0eHTTP\u670d\u52a1\u5668\u7684\u901a\u4fe1\uff0c\u5e76\u6267\u884cRESTful\u539f\u5219\u3002\u5b83\u5904\u7406HTTP\u8fde\u63a5\uff0c\u4f7f\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u63d0\u4f9bURL,\u4f7f\u7528\u53ef\u80fd\u7684\u6a21\u677f\u53d8\u91cf,\u5e76\u63d0\u53d6\u7ed3\u679c\u3002
 \u6ce8\u610f\uff1a\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cRestTemplate\u4f9d\u8d56\u4e8e\u6807\u51c6\u7684JDK\u6765\u5efa\u7acbHTTP\u8fde\u63a5\u3002\u4f60\u53ef\u4ee5\u5207\u6362\u4f7f\u7528\u4e0d\u540c\u7684HTTP\u5e93\uff0c\u5982Apache HttpComponents\uff0cNetty\u548cOkHttp\u901a\u8fc7setRequestFactory\u5c5e\u6027\u3002 \u5185\u90e8\u6a21\u677f\u4f7f\u7528HttpMessageConverter\u5b9e\u4f8b\u5c06HTTP\u6d88\u606f\u8f6c\u6362\u4e3aPOJO\u548c\u4ecePOJO\u8f6c\u6362\u3002\u4e3b\u8981MIME\u7c7b\u578b\u7684\u8f6c\u6362\u5668\u662f\u9ed8\u8ba4\u6ce8\u518c\u7684\uff0c\u4f46\u60a8\u4e5f\u53ef\u4ee5\u6ce8\u518c\u5176\u4ed6\u8f6c\u6362\u5668\u901a\u8fc7setMessageConverters<\/p>\n\n\n\n
\u4ee5\u4e0b\u662fhttp\u65b9\u6cd5\u548crestTempalte\u65b9\u6cd5\u7684\u6bd4\u5bf9\u6620\u5c04\uff0c\u53ef\u4ee5\u770b\u51farestTemplate\u63d0\u4f9b\u4e86\u64cd\u4f5chttp\u7684\u65b9\u6cd5\uff0c\u5176\u4e2dexchange\u65b9\u6cd5\u53ef\u4ee5\u7528\u6765\u505a\u4efb\u4f55\u7684\u8bf7\u6c42\uff0c\u4e00\u822c\u6211\u4eec\u90fd\u662f\u7528\u5b83\u6765\u5c01\u88c5\u4e0d\u540c\u7684\u8bf7\u6c42\u65b9\u5f0f\u3002<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u4e0a\u9762\u7684\u65b9\u6cd5\u6211\u4eec\u5927\u81f4\u53ef\u4ee5\u5206\u4e3a\u4e09\u7ec4\uff1a<\/p>\n\n\n\n
  • getForObject — optionsForAllow \u5206\u4e3a\u4e00\u7ec4\uff0c\u8fd9\u7c7b\u65b9\u6cd5\u662f\u5e38\u89c4\u7684 Rest API\uff08GET\u3001POST\u3001DELETE \u7b49\uff09\u65b9\u6cd5\u8c03\u7528\uff1b<\/li>
  • exchange\uff1a\u63a5\u6536\u4e00\u4e2a RequestEntity<\/code> \u53c2\u6570\uff0c\u53ef\u4ee5\u81ea\u5df1\u8bbe\u7f6e HTTP method\uff0cURL\uff0cheaders \u548c body\uff0c\u8fd4\u56de ResponseEntity\uff1b<\/li>
  • execute\uff1a\u901a\u8fc7 callback \u63a5\u53e3\uff0c\u53ef\u4ee5\u5bf9\u8bf7\u6c42\u548c\u8fd4\u56de\u505a\u66f4\u52a0\u5168\u9762\u7684\u81ea\u5b9a\u4e49\u63a7\u5236\u3002<\/li><\/ul>\n\n\n\n
    3.\u521b\u5efa RestTemplate<\/strong><\/p>\n\n\n\n
    @Bean\npublic RestTemplate restTemplate(ClientHttpRequestFactory factory) {\n    RestTemplate restTemplate = new RestTemplate(factory);\n    return restTemplate;\n}\n\n@Bean\npublic ClientHttpRequestFactory simpleClientHttpRequestFactory() {\n    SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();\n    factory.setReadTimeout(5000);\n    factory.setConnectTimeout(15000);\n    \/\/ \u8bbe\u7f6e\u4ee3\u7406\n    \/\/factory.setProxy(null);\n    return factory;\n}<\/pre>\n\n\n\n
    \u521b\u5efa RestTemplate \u65f6\u9700\u8981\u4e00\u4e2a ClientHttpRequestFactory\uff0c\u901a\u8fc7\u8fd9\u4e2a\u8bf7\u6c42\u5de5\u5382\uff0c\u6211\u4eec\u53ef\u4ee5\u7edf\u4e00\u8bbe\u7f6e\u8bf7\u6c42\u7684\u8d85\u65f6\u65f6\u95f4\uff0c\u8bbe\u7f6e\u4ee3\u7406\u4ee5\u53ca\u4e00\u4e9b\u5176\u4ed6\u7ec6\u8282\u3002\u901a\u8fc7\u4e0a\u9762\u4ee3\u7801\u914d\u7f6e\u540e\uff0c\u6211\u4eec\u76f4\u63a5\u5728\u4ee3\u7801\u4e2d\u6ce8\u5165 RestTemplate \u5c31\u53ef\u4ee5\u4f7f\u7528\u4e86\u3002<\/p>\n\n\n\n
    \u6709\u65f6\u5019\u6211\u4eec\u8fd8\u9700\u8981\u901a\u8fc7 ClientHttpRequestFactory \u914d\u7f6e\u6700\u5927\u94fe\u63a5\u6570\uff0c\u5ffd\u7565SSL\u8bc1\u4e66\u7b49\uff0c\u5927\u5bb6\u9700\u8981\u7684\u65f6\u5019\u53ef\u4ee5\u81ea\u5df1\u67e5\u770b\u4ee3\u7801\u8bbe\u7f6e\u3002<\/p>\n\n\n\n
    \u63a5\u53e3\u8c03\u7528<\/strong><\/p>\n\n\n\n
    \n\n\n\n
    1. \u666e\u901a\u63a5\u53e3\u8c03\u7528<\/strong><\/p>\n\n\n\n
    Map<String, String> vars = Collections.singletonMap(\"hotel\", \"42\");\n\/\/ \u901a\u8fc7 GET \u65b9\u5f0f\u8c03\u7528\uff0c\u8fd4\u56de\u4e00\u4e2a String \u503c\uff0c\u8fd8\u53ef\u4ee5\u7ed9 URL \u53d8\u91cf\u8bbe\u7f6e\u503c\uff08\u4e5f\u53ef\u901a\u8fc7 uriTemplateHandler \u8fd9\u4e2a\u5c5e\u6027\u81ea\u5b9a\u4e49\uff09\nString result = restTemplate.getForObject(\n        \"https:\/\/example.com\/hotels\/{hotel}\/rooms\/{hotel}\", String.class, vars);\n\nString url = \"http:\/\/127.0.0.1:8080\/hello\";\nJSONObject param = new JSONObject();\n\/\/restTemplate \u4f1a\u6839\u636e params \u7684\u5177\u4f53\u7c7b\u578b\uff0c\u8c03\u7528\u5408\u9002\u7684 HttpMessageConvert \u5c06\u8bf7\u6c42\u53c2\u6570\u5199\u5230\u8bf7\u6c42\u4f53 body \u4e2d\uff0c\u5e76\u5728\u8bf7\u6c42\u5934\u4e2d\u6dfb\u52a0\u5408\u9002\u7684 content-type\uff1b\n\/\/ \u4e5f\u4f1a\u6839\u636e responseType \u7684\u7c7b\u578b\uff08\u672c\u5217\u5b50\u4e2d\u662f JSONObject\uff09\uff0c\u8bbe\u7f6e head \u4e2d\u7684 accept \u5b57\u6bb5\uff0c\u5f53\u54cd\u5e94\u8fd4\u56de\u7684\u65f6\u5019\u518d\u8c03\u7528\u5408\u9002\u7684 HttpMessageConvert \u8fdb\u884c\u54cd\u5e94\u8f6c\u6362\nResponseEntity<JSONObject> responseEntity=restTemplate.postForEntity(url,params,JSONObject.class);\nint statusCodeValue = responseEntity.getStatusCodeValue();\nHttpHeaders headers = responseEntity.getHeaders();\nJSONObject body = responseEntity.getBody();<\/pre>\n\n\n\n
    2. \u6dfb\u52a0 Header \u548c Cookie<\/strong><\/p>\n\n\n\n
    \u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u5728\u8bf7\u6c42\u4e2d\u7684 Head \u4e2d\u6dfb\u52a0\u503c\u6216\u8005\u5c06\u67d0\u4e9b\u503c\u901a\u8fc7 cookie \u4f20\u7ed9\u670d\u52a1\u7aef\uff0c\u90a3\u4e48\u4e0a\u9762\u8fd9\u79cd\u8c03\u7528\u5f62\u5f0f\u5c31\u4e0d\u592a\u6ee1\u8db3\u8981\u6c42\u4e86\u3002<\/p>\n\n\n\n
    UriComponents uriComponents = UriComponentsBuilder.fromHttpUrl(\"127.0.0.1:8080\").\n                path(\"\/test\").build(true);\n URI uri = uriComponents.toUri();\n \nRequestEntity<JSONObject> requestEntity = RequestEntity.post(uri).\n                \/\/ \u6dfb\u52a0 cookie(\u8fd9\u8fb9\u6709\u4e2a\u95ee\u9898\uff0c\u5047\u5982\u6211\u4eec\u8981\u8bbe\u7f6e cookie \u7684\u751f\u547d\u5468\u671f\uff0c\u4f5c\u7528\u57df\u7b49\u53c2\u6570\u6211\u4eec\u8981\u600e\u4e48\u64cd\u4f5c)\n                header(HttpHeaders.COOKIE,\"key1=value1\").\n                \/\/ \u6dfb\u52a0 header\n                header((\"MyRequestHeader\", \"MyValue\")\n                accept(MediaType.APPLICATION_JSON).\n                contentType(MediaType.APPLICATION_JSON).\n                body(requestParam);\nResponseEntity<JSONObject> responseEntity = restTemplate.exchange(requestEntity,JSONObject.class);\n\/\/ \u54cd\u5e94\u7ed3\u679c\nJSONObject responseEntityBody = responseEntity.getBody();<\/pre>\n\n\n\n
    3. \u6587\u4ef6\u4e0a\u4f20<\/strong><\/p>\n\n\n\n
    \u4e0a\u9762\u4e24\u4e2a\u5217\u5b50\u57fa\u672c\u80fd\u8986\u76d6\u6211\u4eec\u5e73\u65f6\u5f00\u53d1\u7684\u5927\u591a\u6570\u529f\u80fd\u4e86\u3002\u8fd9\u8fb9\u518d\u8bb2\u4e2a\u6587\u4ef6\u4e0a\u4f20\u7684\u5217\u5b50\uff08RestTemplate \u529f\u80fd\u8fd8\u662f\u86ee\u5168\u7684\uff09\u3002<\/p>\n\n\n\n
    public Object uplaod(@RequestBody JSONObject params) throws Exception{\n\n        final String url = \"http:\/\/localhost:8888\/hello\/m3\";\n        \/\/ \u8bbe\u7f6e\u8bf7\u6c42\u5934\n        HttpHeaders headers = new HttpHeaders();\n        headers.setContentType(MediaType.MULTIPART_FORM_DATA);\n        \/\/ \u8bbe\u7f6e\u8bf7\u6c42\u4f53\uff0c\u6ce8\u610f\u662f LinkedMultiValueMap\n        FileSystemResource resource1 = new FileSystemResource(\"D:\\\\dir1\\\\ss\\\\pic1.jpg\");\n        FileSystemResource resource2 = new FileSystemResource(\"D:\\\\dir1\\\\ss\\\\pic2.jpg\");\n       \n        MultiValueMap<String, Object> form = new LinkedMultiValueMap<>();\n        form.add(\"file\", resource1);\n        form.add(\"file\", resource2);\n        form.add(\"param1\",\"value1\");\n\n        HttpEntity<MultiValueMap<String, Object>> files = new HttpEntity<>(form, headers);\n        JSONObject s = restTemplate.postForObject(url, files, JSONObject.class);\n        return s;\n    }<\/pre>\n\n\n\n
    \u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\u4e0a\u4f20\u4e86\u4e24\u4e2a\u672c\u5730\u56fe\u7247\uff0c\u901a\u8fc7\u4e0b\u9762\u4ee3\u7801\u53ef\u4ee5\u987a\u5229\u63a5\u6536\u3002<\/p>\n\n\n\n
    @RequestMapping(\"\/m3\")\npublic Object fileUpload(@RequestParam(\"file\") MultipartFile[] files, HttpServletRequest request) throws Exception {\n    \/\/ \u643a\u5e26\u7684\u5176\u4ed6\u53c2\u6570\u53ef\u4ee5\u4f7f\u7528 getParameter \u65b9\u6cd5\u63a5\u6536\n    String param1 = request.getParameter(\"param1\");\n    Response response = new Response();\n    if (files == null) {\n        response.failure(\"\u6587\u4ef6\u4e0a\u4f20\u9519\u8bef, \u670d\u52a1\u7aef\u672a\u62ff\u5230\u4e0a\u4f20\u7684\u6587\u4ef6\uff01\");\n        return response;\n    }\n    for (MultipartFile file : files) {\n        if (!file.isEmpty() && file.getSize() > 0) {\n            String fileName = file.getOriginalFilename();\n            \/\/ \u53c2\u8003 FileCopyUtils \u8fd9\u4e2a\u5de5\u5177\u7c7b\n            file.transferTo(new File(\"D:\\\\\" + fileName));\n            logger.info(\"\u6587\u4ef6:{} \u4e0a\u4f20\u6210\u529f...\",fileName);\n        }\n    }\n    response.success(\"\u6587\u4ef6\u4e0a\u4f20\u6210\u529f\");\n    return response;\n    }\n<\/pre>\n\n\n\n
    4. \u6587\u4ef6\u4e0b\u8f7d<\/strong><\/p>\n\n\n\n
    \n\n\n\n
    private InputStream downLoadVideoFromVod(String url) throws Exception {\n  byte[] bytes = restTemplate.getForObject(url, byte[].class);\n  return new ByteArrayInputStream(bytes);\n}<\/pre>\n\n\n\n
    \u4e00\u4e9b\u5176\u4ed6\u8bbe\u7f6e<\/strong><\/p>\n\n\n\n
    \n\n\n\n
    1. \u62e6\u622a\u5668\u914d\u7f6e<\/strong><\/p>\n\n\n\n
    RestTemplate \u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u62e6\u622a\u5668\u505a\u4e00\u4e9b\u7edf\u4e00\u5904\u7406\u3002\u8fd9\u4e2a\u529f\u80fd\u611f\u89c9\u548c Spring MVC \u7684\u62e6\u622a\u5668\u7c7b\u4f3c\u3002\u914d\u7f6e\u4e5f\u5f88\u7b80\u5355\uff1a<\/p>\n\n\n\n
    class MyInterceptor implements ClientHttpRequestInterceptor{\n\n        @Override\n        public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {\n            logger.info(\"enter interceptor...\");\n            return execution.execute(request,body);\n        }\n    }<\/pre>\n\n\n\n
    2. ErrorHandler \u914d\u7f6e<\/strong><\/p>\n\n\n\n
    ErrorHandler \u7528\u6765\u5bf9\u8c03\u7528\u9519\u8bef\u5bf9\u7edf\u4e00\u5904\u7406\u3002<\/p>\n\n\n\n
    public class MyResponseErrorHandler extends DefaultResponseErrorHandler {\n\n        @Override\n        public boolean hasError(ClientHttpResponse response) throws IOException {\n            return super.hasError(response);\n        }\n\n        @Override\n        public void handleError(ClientHttpResponse response) throws IOException {\n            HttpStatus statusCode = HttpStatus.resolve(response.getRawStatusCode());\n            if (statusCode == null) {\n                throw new UnknownHttpStatusCodeException(response.getRawStatusCode(), response.getStatusText(),\n                        response.getHeaders(), getResponseBody(response), getCharset(response));\n            }\n            handleError(response, statusCode);\n        }\n        @Override\n        protected void handleError(ClientHttpResponse response, HttpStatus statusCode) throws IOException {\n            switch (statusCode.series()) {\n                case CLIENT_ERROR:\n                    HttpClientErrorException exp1 = new HttpClientErrorException(statusCode, response.getStatusText(), response.getHeaders(), getResponseBody(response), getCharset(response));\n                    logger.error(\"\u5ba2\u6237\u7aef\u8c03\u7528\u5f02\u5e38\",exp1);\n                    throw  exp1;\n                case SERVER_ERROR:\n                    HttpServerErrorException exp2 = new HttpServerErrorException(statusCode, response.getStatusText(),\n                            response.getHeaders(), getResponseBody(response), getCharset(response));\n                    logger.error(\"\u670d\u52a1\u7aef\u8c03\u7528\u5f02\u5e38\",exp2);\n                    throw exp2;\n                default:\n                    UnknownHttpStatusCodeException exp3 = new UnknownHttpStatusCodeException(statusCode.value(), response.getStatusText(),\n                            response.getHeaders(), getResponseBody(response), getCharset(response));\n                    logger.error(\"\u7f51\u7edc\u8c03\u7528\u672a\u77e5\u5f02\u5e38\");\n                    throw exp3;\n            }\n        }\n\n    }<\/pre>\n\n\n\n
    @Bean\npublic RestTemplate restTemplate(ClientHttpRequestFactory factory) {\n    RestTemplate restTemplate = new RestTemplate(factory);\n    MyResponseErrorHandler errorHandler = new MyResponseErrorHandler();\n    restTemplate.setErrorHandler(errorHandler);\n    List<HttpMessageConverter<?>> messageConverters = restTemplate.getMessageConverters();\n    \/\/ \u901a\u8fc7\u4e0b\u9762\u4ee3\u7801\u53ef\u4ee5\u6dfb\u52a0\u65b0\u7684 HttpMessageConverter\n    \/\/messageConverters.add(new );\n    return restTemplate;\n}<\/pre>\n\n\n\n
    3. HttpMessageConverter \u914d\u7f6e<\/strong><\/p>\n\n\n\n
    RestTemplate \u4e5f\u53ef\u4ee5\u914d\u7f6e HttpMessageConverter\uff0c\u914d\u7f6e\u7684\u539f\u7406\u548c Spring MVC \u4e2d\u7c7b\u4f3c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5f15\u8a00 \u73b0\u5982\u4eca\u7684 IT \u9879\u76ee\uff0c\u7531\u670d\u52a1\u7aef\u5411\u5916\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\u7684\u573a\u666f\uff0c\u57fa\u672c\u4e0a\u5904\u5904\u53ef\u89c1\uff01\u4f20\u7edf\u60c5\u51b5\u4e0b\uff0c\u5728\u670d\u52a1\u7aef\u4ee3\u7801\u91cc\u8bbf\u95ee h […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,27],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/11860"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11860"}],"version-history":[{"count":7,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/11860\/revisions"}],"predecessor-version":[{"id":11871,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/11860\/revisions\/11871"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}