RestTemplate中getForEntity()方法的示例分享

getForEntity方法简介

getForEntity用于向一个url进行get请求
  此方法请求后会返回整个http请求的信息

getForEntity方法语法

 
public <T> ResponseEntity<T> getForEntity(String url, 
       Class<T> responseType, Object... uriVariables){}
public <T> ResponseEntity<T> getForEntity(String url, 
       Class<T> responseType, Map<String, ?> uriVariables){}
public <T> ResponseEntity<T> getForEntity(URI url,
       Class<T> responseType){}

不带参数的Get请求

String url = "http://localhost:8080/testFunForEntity/";
ResponseEntity<Student> responseEntity = restTemplate.getForEntity(url , Student.class);
responseEntity.getStatusCode();
responseEntity.getHeaders();
responseEntity.getBody();
log.info("【responseEntity : {}】" , responseEntity);

带参数的Get请求(按{}顺序绑定参数)

String url = "http://localhost:8080/testFunForEntity/{name}/{age}";
ResponseEntity<Student> responseEntity = restTemplate.getForEntity(url ,
      Student.class , "java265-name" , "18");
log.info("【responseEntity : {}】" , responseEntity);

带参数的Get请求(按Ma的keyp绑定{}参数)

String url = "http://localhost:9999/testFunForEntity/{name}/{age}";
   Map<String,String> map = new HashMap<>();
map.put("name","java");
map.put("age" , "18");
ResponseEntity<Student> responseEntity = restTemplate.getForEntity(url , Student.class ,"map");
log.info("【responseEntity : {}】" , responseEntity);