- \n
- Spring RestTemplate class is part of spring-web, introduced in Spring 3.<\/li>\n
- We can use RestTemplate to test HTTP based restful web services, it doesn\u2019t support HTTPS protocol.<\/li>\n
- RestTemplate class provides overloaded methods for different HTTP methods, such as GET, POST, PUT, DELETE etc.<\/li>\n<\/ul>\n
\u30b9\u30d7\u30ea\u30f3\u30b0\u306e RestTemplate \u306e\u4f8b<\/h3>\n
Spring RestTemplate\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002Spring Data JPA\u306e\u8a18\u4e8b\u3067\u4f5c\u6210\u3055\u308c\u305fREST Web\u30b5\u30fc\u30d3\u30b9\u3092\u30c6\u30b9\u30c8\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30c6\u30fc\u30d6\u30eb\u306f\u3001\u3053\u306eREST Web\u30b5\u30fc\u30d3\u30b9\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308bURI\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\n\n\n\n
\n \nURI<\/th>\n HTTP Method<\/th>\n Description<\/th>\n<\/tr>\n<\/thead>\n \n \/springData\/person<\/td>\n GET<\/td>\n Get all persons from database<\/td>\n<\/tr>\n \n \/springData\/person\/{id}<\/td>\n GET<\/td>\n Get person by id<\/td>\n<\/tr>\n \n \/springData\/person<\/td>\n POST<\/td>\n Add person to database<\/td>\n<\/tr>\n \n \/springData\/person<\/td>\n PUT<\/td>\n Update person<\/td>\n<\/tr>\n \n \/springData\/person\/{id}<\/td>\n DELETE<\/td>\n Delete person by id<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n ![\"Spring](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656499c1daa94e2bdf7c114b\/6-0.png\" "\\"\\"")
<\/div>\nSpring RestTemplate\u306eMaven\u306e\u4f9d\u5b58\u95a2\u4fc2<\/h3>\n
\u79c1\u305f\u3061\u306fSpring\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u306fspring-core\u3068spring-context\u306e\u4f9d\u5b58\u95a2\u4fc2\u304c\u5fc5\u8981\u3067\u3059\u3002\u305d\u3057\u3066\u3001RestTemplate\u30af\u30e9\u30b9\u3092\u542b\u3080spring-web\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u3082\u5fc5\u8981\u3067\u3059\u3002\u307e\u305f\u3001Spring\u306eJSON\u30b5\u30dd\u30fc\u30c8\u306b\u306fjackson-mapper-asl\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n
<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<project xmlns=\"https:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\"\r\n\txsi:schemaLocation=\"https:\/\/maven.apache.org\/POM\/4.0.0 https:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\r\n\t<modelVersion>4.0.0<\/modelVersion>\r\n\r\n\t<groupId>com.scdev.spring<\/groupId>\r\n\t<artifactId>SpringRestTemplate<\/artifactId>\r\n\t<version>1.0-SNAPSHOT<\/version>\r\n\t<properties>\r\n\t\t<spring.framework>4.3.0.RELEASE<\/spring.framework>\r\n\t\t<spring.web>3.0.2.RELEASE<\/spring.web>\r\n\t\t<serializer.version>2.8.1<\/serializer.version>\r\n\t<\/properties>\r\n\t<dependencies>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework<\/groupId>\r\n\t\t\t<artifactId>spring-core<\/artifactId>\r\n\t\t\t<version>${spring.framework}<\/version>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework<\/groupId>\r\n\t\t\t<artifactId>spring-context<\/artifactId>\r\n\t\t\t<version>${spring.framework}<\/version>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.codehaus.jackson<\/groupId>\r\n\t\t\t<artifactId>jackson-mapper-asl<\/artifactId>\r\n\t\t\t<version>1.9.4<\/version>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework<\/groupId>\r\n\t\t\t<artifactId>spring-web<\/artifactId>\r\n\t\t\t<version>${spring.web}<\/version>\r\n\t\t<\/dependency>\r\n\t<\/dependencies>\r\n<\/project>\r\n<\/code><\/pre>\n\u6625\u306e\u8a2d\u5b9a\u30af\u30e9\u30b9<\/h3>\n
RestTemplate\u30af\u30e9\u30b9\u306e\u305f\u3081\u306bSpring Bean\u3092\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306fAppConfig\u30af\u30e9\u30b9\u3067\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n
package com.scdev.spring.config;\r\n\r\nimport org.codehaus.jackson.map.ObjectMapper;\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.ComponentScan;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.http.converter.json.MappingJacksonHttpMessageConverter;\r\nimport org.springframework.web.client.RestTemplate;\r\n\r\n@Configuration\r\n@ComponentScan(\"com.scdev.spring\")\r\npublic class AppConfig {\r\n\r\n\t@Bean\r\n\tRestTemplate restTemplate() {\r\n\t\tRestTemplate restTemplate = new RestTemplate();\r\n\t\tMappingJacksonHttpMessageConverter converter = new MappingJacksonHttpMessageConverter();\r\n\t\tconverter.setObjectMapper(new ObjectMapper());\r\n\t\trestTemplate.getMessageConverters().add(converter);\r\n\t\treturn restTemplate;\r\n\t}\r\n}\r\n<\/code><\/pre>\nRestTemplate\u306fMessageConverter\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001RestTemplate\u306ebean\u306b\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001JSON\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306bMappingJacksonHttpMessageConverter\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u30e2\u30c7\u30eb\u30af\u30e9\u30b9<\/h3>\n
\u79c1\u305f\u3061\u306f\u3001Jackson\u30de\u30c3\u30d1\u30fc\u3092\u4f7f\u7528\u3057\u3066Web\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u8fd4\u3055\u308c\u305fJSON\u3092Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u3053\u306e\u305f\u3081\u306b\u30e2\u30c7\u30eb\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u3053\u3067\u306fJPA\u306e\u6ce8\u91c8\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u306e\u3067\u3001Web\u30b5\u30fc\u30d3\u30b9\u3067\u4f7f\u7528\u3055\u308c\u308b\u30e2\u30c7\u30eb\u30af\u30e9\u30b9\u3068\u975e\u5e38\u306b\u4f3c\u305f\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
package com.scdev.spring.model;\r\n\r\npublic class Person {\r\n\r\n\tprivate Long id;\r\n\r\n\tprivate Integer age;\r\n\r\n\tprivate String firstName;\r\n\r\n\tprivate String lastName;\r\n\r\n\tpublic Person() {\r\n\t}\r\n\r\n\tpublic Long getId() {\r\n\t\treturn id;\r\n\t}\r\n\r\n\tpublic void setId(Long id) {\r\n\t\tthis.id = id;\r\n\t}\r\n\r\n\tpublic Integer getAge() {\r\n\t\treturn age;\r\n\t}\r\n\r\n\tpublic void setAge(Integer age) {\r\n\t\tthis.age = age;\r\n\t}\r\n\r\n\tpublic String getFirstName() {\r\n\t\treturn firstName;\r\n\t}\r\n\r\n\tpublic void setFirstName(String firstName) {\r\n\t\tthis.firstName = firstName;\r\n\t}\r\n\r\n\tpublic String getLastName() {\r\n\t\treturn lastName;\r\n\t}\r\n\r\n\tpublic void setLastName(String lastName) {\r\n\t\tthis.lastName = lastName;\r\n\t}\r\n\r\n\t@Override\r\n\tpublic String toString() {\r\n\t\treturn \"Person{\" + \"id=\" + id + \", age=\" + age + \", firstName='\" + firstName + '\\'' + \", lastName='\" + lastName\r\n\t\t\t\t+ '\\'' + '}';\r\n\t}\r\n}\r\n<\/code><\/pre>\nSpring\u306eRestTemplate\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30af\u30e9\u30b9<\/h3>\n
\u6700\u5f8c\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u4e0a\u8a18\u3067\u5b9a\u7fa9\u3055\u308c\u305fRestTemplate\u30d3\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n
package com.scdev.spring.config;\r\n\r\nimport java.util.List;\r\n\r\nimport org.springframework.http.HttpStatus;\r\n\r\nimport com.scdev.spring.model.Person;\r\n\r\npublic interface PersonClient {\r\n\tList<Person> getAllPerson();\r\n\r\n\tPerson getById(Long id);\r\n\r\n\tHttpStatus addPerson(Person person);\r\n\r\n\tvoid updatePerson(Person person);\r\n\r\n\tvoid deletePerson(Long id);\r\n}\r\n<\/code><\/pre>\npackage com.scdev.spring.config;\r\n\r\nimport java.util.Arrays;\r\nimport java.util.List;\r\n\r\nimport org.springframework.beans.factory.annotation.Autowired;\r\nimport org.springframework.http.HttpStatus;\r\nimport org.springframework.http.ResponseEntity;\r\nimport org.springframework.stereotype.Service;\r\nimport org.springframework.web.client.RestTemplate;\r\n\r\nimport com.scdev.spring.model.Person;\r\n\r\n@Service\r\npublic class PersonClientImpl implements PersonClient {\r\n\r\n\t@Autowired\r\n\tRestTemplate restTemplate;\r\n\r\n\tfinal String ROOT_URI = \"https:\/\/localhost:8080\/springData\/person\";\r\n\r\n\tpublic List<Person> getAllPerson() {\r\n\t\tResponseEntity<Person[]> response = restTemplate.getForEntity(ROOT_URI, Person[].class);\r\n\t\treturn Arrays.asList(response.getBody());\r\n\r\n\t}\r\n\r\n\tpublic Person getById(Long id) {\r\n\t\tResponseEntity<Person> response = restTemplate.getForEntity(ROOT_URI + \"\/\"+id, Person.class);\r\n\t\treturn response.getBody();\r\n\t}\r\n\r\n\tpublic HttpStatus addPerson(Person person) {\r\n\t\tResponseEntity<HttpStatus> response = restTemplate.postForEntity(ROOT_URI, person, HttpStatus.class);\r\n\t\treturn response.getBody();\r\n\t}\r\n\r\n\tpublic void updatePerson(Person person) {\r\n\t\trestTemplate.put(ROOT_URI, person);\r\n\t}\r\n\r\n\tpublic void deletePerson(Long id) {\r\n\t\trestTemplate.delete(ROOT_URI + id);\r\n\r\n\t}\r\n}\r\n<\/code><\/pre>\nURI\u3068HTTP\u30e1\u30bd\u30c3\u30c9\u306b\u57fa\u3065\u3044\u3066\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6e21\u3057\u3001RestTemplate\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u307e\u3059\u3002\u30b3\u30fc\u30c9\u81ea\u4f53\u304c\u7406\u89e3\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
Spring RestTemplate \u30c6\u30b9\u30c8\u30af\u30e9\u30b9<\/h3>\n
\u79c1\u305f\u3061\u306eSpring RestTemplate\u306e\u4f8b\u984c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u30c6\u30b9\u30c8\u3059\u308b\u6642\u9593\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30af\u30e9\u30b9\u306f\u3001Spring\u306e\u3084\u308a\u65b9\u3067RestTemplate\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
package com.scdev.spring;\r\n\r\nimport org.springframework.context.annotation.AnnotationConfigApplicationContext;\r\nimport org.springframework.http.HttpStatus;\r\n\r\nimport com.scdev.spring.config.AppConfig;\r\nimport com.scdev.spring.config.PersonClient;\r\nimport com.scdev.spring.model.Person;\r\n\r\npublic class Main {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tAnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(AppConfig.class);\r\n\r\n\t\tPersonClient client = applicationContext.getBean(PersonClient.class);\r\n\r\n\t\tSystem.out.println(\"Getting list of all people:\");\r\n\r\n\t\tfor (Person p : client.getAllPerson()) {\r\n\t\t\tSystem.out.println(p);\r\n\t\t}\r\n\r\n\t\tSystem.out.println(\"\\nGetting person with ID 2\");\r\n\r\n\t\tPerson personById = client.getById(2L);\r\n\r\n\t\tSystem.out.println(personById);\r\n\r\n\t\tSystem.out.println(\"Adding a Person\");\r\n\t\tPerson p = new Person();\r\n\t\tp.setAge(50);\r\n\t\tp.setFirstName(\"David\");\r\n\t\tp.setLastName(\"Blain\");\r\n\t\tHttpStatus status = client.addPerson(p);\r\n\t\tSystem.out.println(\"Add Person Response = \" + status);\r\n\r\n\t\tapplicationContext.close();\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u30ed\u30fc\u30ab\u30eb\u74b0\u5883\u3067\u4e0a\u8a18\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u6b21\u306e\u51fa\u529b\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
Getting list of all people:\r\nPerson{id=2, age=30, firstName='Oksi', lastName=' Bahatskaya'}\r\nPerson{id=1, age=30, firstName='Vlad', lastName='Mateo'}\r\n\r\nGetting person with ID 2\r\nPerson{id=2, age=30, firstName='Oksi', lastName=' Bahatskaya'}\r\nAdding a Person\r\nAdd Person Response = 201\r\n<\/code><\/pre>\n![\"Spring](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656499c1daa94e2bdf7c114b\/27-0.png\" "\\"\\"")
<\/div>\n\u30b9\u30d7\u30ea\u30f3\u30b0\u306eRestTemplate\u306e\u4f8b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u53c2\u7167\uff1aAPI\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/p>\n","protected":false},"excerpt":{"rendered":"
Spring RestTemplate\u306fRESTful\u306a\u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306e\u4fbf\u5229\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002 \u6625\u306eRestTemplate Spring RestTemplate class is part of […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-694","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\n
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