RestTemplateBuilder (spring-boot 2.7.16)

java.lang.Object
- org.springframework.boot.web.client.RestTemplateBuilder

```
public class RestTemplateBuilder
extends java.lang.Object
```
Builder that can be used to configure and create a RestTemplate. Provides convenience methods to register converters, error handlers and UriTemplateHandlers.
By default the built RestTemplate will attempt to use the most suitable ClientHttpRequestFactory, call detectRequestFactory(false) if you prefer to keep the default. In a typical auto-configured Spring Boot application this builder is available as a bean and can be injected whenever a RestTemplate is needed.

Since:

1.4.0

Constructor Summary

Constructors
Constructor and Description

RestTemplateBuilder(RestTemplateCustomizer... customizers)
Create a new RestTemplateBuilder instance.

Constructors
Constructor and Description
`RestTemplateBuilder(RestTemplateCustomizer... customizers)` Create a new `RestTemplateBuilder` instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`RestTemplateBuilder`	`additionalCustomizers(java.util.Collection<? extends RestTemplateCustomizer> customizers)` Add `RestTemplateCustomizers` that should be applied to the `RestTemplate`.
`RestTemplateBuilder`	`additionalCustomizers(RestTemplateCustomizer... customizers)` Add `RestTemplateCustomizers` that should be applied to the `RestTemplate`.
`RestTemplateBuilder`	`additionalInterceptors(org.springframework.http.client.ClientHttpRequestInterceptor... interceptors)` Add additional `ClientHttpRequestInterceptors` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`additionalInterceptors(java.util.Collection<? extends org.springframework.http.client.ClientHttpRequestInterceptor> interceptors)` Add additional `ClientHttpRequestInterceptors` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`additionalMessageConverters(java.util.Collection<? extends org.springframework.http.converter.HttpMessageConverter<?>> messageConverters)` Add additional `HttpMessageConverters` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`additionalMessageConverters(org.springframework.http.converter.HttpMessageConverter<?>... messageConverters)` Add additional `HttpMessageConverters` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`additionalRequestCustomizers(java.util.Collection<? extends RestTemplateRequestCustomizer<?>> requestCustomizers)` Add the `RestTemplateRequestCustomizers` that should be applied to the `ClientHttpRequest`.
`RestTemplateBuilder`	`additionalRequestCustomizers(RestTemplateRequestCustomizer<?>... requestCustomizers)` Add the `RestTemplateRequestCustomizers` that should be applied to the `ClientHttpRequest`.
`RestTemplateBuilder`	`basicAuthentication(java.lang.String username, java.lang.String password)` Add HTTP Basic Authentication to requests with the given username/password pair, unless a custom Authorization header has been set before.
`RestTemplateBuilder`	`basicAuthentication(java.lang.String username, java.lang.String password, java.nio.charset.Charset charset)` Add HTTP Basic Authentication to requests with the given username/password pair, unless a custom Authorization header has been set before.
`org.springframework.web.client.RestTemplate`	`build()` Build a new `RestTemplate` instance and configure it using this builder.
`<T extends org.springframework.web.client.RestTemplate> T`	`build(java.lang.Class<T> restTemplateClass)` Build a new `RestTemplate` instance of the specified type and configure it using this builder.
`org.springframework.http.client.ClientHttpRequestFactory`	`buildRequestFactory()` Build a new `ClientHttpRequestFactory` instance using the settings of this builder.
`<T extends org.springframework.web.client.RestTemplate> T`	`configure(T restTemplate)` Configure the provided `RestTemplate` instance using this builder.
`RestTemplateBuilder`	`customizers(java.util.Collection<? extends RestTemplateCustomizer> customizers)` Set the `RestTemplateCustomizers` that should be applied to the `RestTemplate`.
`RestTemplateBuilder`	`customizers(RestTemplateCustomizer... customizers)` Set the `RestTemplateCustomizers` that should be applied to the `RestTemplate`.
`RestTemplateBuilder`	`defaultHeader(java.lang.String name, java.lang.String... values)` Add a default header that will be set if not already present on the outgoing `ClientHttpRequest`.
`RestTemplateBuilder`	`defaultMessageConverters()` Set the `HttpMessageConverters` that should be used with the `RestTemplate` to the default set.
`RestTemplateBuilder`	`detectRequestFactory(boolean detectRequestFactory)` Set if the `ClientHttpRequestFactory` should be detected based on the classpath.
`RestTemplateBuilder`	`errorHandler(org.springframework.web.client.ResponseErrorHandler errorHandler)` Set the `ResponseErrorHandler` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`interceptors(org.springframework.http.client.ClientHttpRequestInterceptor... interceptors)` Set the `ClientHttpRequestInterceptors` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`interceptors(java.util.Collection<org.springframework.http.client.ClientHttpRequestInterceptor> interceptors)` Set the `ClientHttpRequestInterceptors` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`messageConverters(java.util.Collection<? extends org.springframework.http.converter.HttpMessageConverter<?>> messageConverters)` Set the `HttpMessageConverters` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`messageConverters(org.springframework.http.converter.HttpMessageConverter<?>... messageConverters)` Set the `HttpMessageConverters` that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`requestCustomizers(java.util.Collection<? extends RestTemplateRequestCustomizer<?>> requestCustomizers)` Set the `RestTemplateRequestCustomizers` that should be applied to the `ClientHttpRequest`.
`RestTemplateBuilder`	`requestCustomizers(RestTemplateRequestCustomizer<?>... requestCustomizers)` Set the `RestTemplateRequestCustomizers` that should be applied to the `ClientHttpRequest`.
`RestTemplateBuilder`	`requestFactory(java.lang.Class<? extends org.springframework.http.client.ClientHttpRequestFactory> requestFactory)` Set the `ClientHttpRequestFactory` class that should be used with the `RestTemplate`.
`RestTemplateBuilder`	`requestFactory(java.util.function.Supplier<org.springframework.http.client.ClientHttpRequestFactory> requestFactory)` Set the `Supplier` of `ClientHttpRequestFactory` that should be called each time we `build()` a new `RestTemplate` instance.
`RestTemplateBuilder`	`rootUri(java.lang.String rootUri)` Set a root URL that should be applied to each request that starts with `'/'`.
`RestTemplateBuilder`	`setBufferRequestBody(boolean bufferRequestBody)` Sets if the underlying `ClientHttpRequestFactory` should buffer the request body internally.
`RestTemplateBuilder`	`setConnectTimeout(java.time.Duration connectTimeout)` Sets the connection timeout on the underlying `ClientHttpRequestFactory`.
`RestTemplateBuilder`	`setReadTimeout(java.time.Duration readTimeout)` Sets the read timeout on the underlying `ClientHttpRequestFactory`.
`RestTemplateBuilder`	`uriTemplateHandler(org.springframework.web.util.UriTemplateHandler uriTemplateHandler)` Set the `UriTemplateHandler` that should be used with the `RestTemplate`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RestTemplateBuilder
```
public RestTemplateBuilder(RestTemplateCustomizer... customizers)
```
    Create a new RestTemplateBuilder instance.
    
    Parameters:
    
    customizers - any RestTemplateCustomizers that should be applied when the RestTemplate is built
- Method Detail
  - detectRequestFactory
```
public RestTemplateBuilder detectRequestFactory(boolean detectRequestFactory)
```
    Set if the ClientHttpRequestFactory should be detected based on the classpath. Default if true.
    
    Parameters:
    
    detectRequestFactory - if the ClientHttpRequestFactory should be detected
    
    Returns:
    
    a new builder instance
  - rootUri
```
public RestTemplateBuilder rootUri(java.lang.String rootUri)
```
    Set a root URL that should be applied to each request that starts with '/'. Since this works by adding a UriTemplateHandler to the RestTemplate, the root URL will only apply when String variants of the RestTemplate methods are used for specifying the request URL. See RootUriTemplateHandler for details.
    
    Parameters:
    
    rootUri - the root URI or null
    
    Returns:
    
    a new builder instance
  - messageConverters
```
public RestTemplateBuilder messageConverters(org.springframework.http.converter.HttpMessageConverter<?>... messageConverters)
```
    Set the HttpMessageConverters that should be used with the RestTemplate. Setting this value will replace any previously configured converters and any converters configured on the builder will replace RestTemplate's default converters.
    
    Parameters:
    
    messageConverters - the converters to set
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    additionalMessageConverters(HttpMessageConverter...)
  - messageConverters
```
public RestTemplateBuilder messageConverters(java.util.Collection<? extends org.springframework.http.converter.HttpMessageConverter<?>> messageConverters)
```
    Set the HttpMessageConverters that should be used with the RestTemplate. Setting this value will replace any previously configured converters and any converters configured on the builder will replace RestTemplate's default converters.
    
    Parameters:
    
    messageConverters - the converters to set
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    additionalMessageConverters(HttpMessageConverter...)
  - additionalMessageConverters
```
public RestTemplateBuilder additionalMessageConverters(org.springframework.http.converter.HttpMessageConverter<?>... messageConverters)
```
    Add additional HttpMessageConverters that should be used with the RestTemplate. Any converters configured on the builder will replace RestTemplate's default converters.
    
    Parameters:
    
    messageConverters - the converters to add
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    messageConverters(HttpMessageConverter...)
  - additionalMessageConverters
```
public RestTemplateBuilder additionalMessageConverters(java.util.Collection<? extends org.springframework.http.converter.HttpMessageConverter<?>> messageConverters)
```
    Add additional HttpMessageConverters that should be used with the RestTemplate. Any converters configured on the builder will replace RestTemplate's default converters.
    
    Parameters:
    
    messageConverters - the converters to add
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    messageConverters(HttpMessageConverter...)
  - defaultMessageConverters
```
public RestTemplateBuilder defaultMessageConverters()
```
    Set the HttpMessageConverters that should be used with the RestTemplate to the default set. Calling this method will replace any previously defined converters.
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    messageConverters(HttpMessageConverter...)
  - interceptors
```
public RestTemplateBuilder interceptors(org.springframework.http.client.ClientHttpRequestInterceptor... interceptors)
```
    Set the ClientHttpRequestInterceptors that should be used with the RestTemplate. Setting this value will replace any previously defined interceptors.
    
    Parameters:
    
    interceptors - the interceptors to set
    
    Returns:
    
    a new builder instance
    
    Since:
    
    1.4.1
    
    See Also:
    
    additionalInterceptors(ClientHttpRequestInterceptor...)
  - interceptors
```
public RestTemplateBuilder interceptors(java.util.Collection<org.springframework.http.client.ClientHttpRequestInterceptor> interceptors)
```
    Set the ClientHttpRequestInterceptors that should be used with the RestTemplate. Setting this value will replace any previously defined interceptors.
    
    Parameters:
    
    interceptors - the interceptors to set
    
    Returns:
    
    a new builder instance
    
    Since:
    
    1.4.1
    
    See Also:
    
    additionalInterceptors(ClientHttpRequestInterceptor...)
  - additionalInterceptors
```
public RestTemplateBuilder additionalInterceptors(org.springframework.http.client.ClientHttpRequestInterceptor... interceptors)
```
    Add additional ClientHttpRequestInterceptors that should be used with the RestTemplate.
    
    Parameters:
    
    interceptors - the interceptors to add
    
    Returns:
    
    a new builder instance
    
    Since:
    
    1.4.1
    
    See Also:
    
    interceptors(ClientHttpRequestInterceptor...)
  - additionalInterceptors
```
public RestTemplateBuilder additionalInterceptors(java.util.Collection<? extends org.springframework.http.client.ClientHttpRequestInterceptor> interceptors)
```
    Add additional ClientHttpRequestInterceptors that should be used with the RestTemplate.
    
    Parameters:
    
    interceptors - the interceptors to add
    
    Returns:
    
    a new builder instance
    
    Since:
    
    1.4.1
    
    See Also:
    
    interceptors(ClientHttpRequestInterceptor...)
  - requestFactory
```
public RestTemplateBuilder requestFactory(java.lang.Class<? extends org.springframework.http.client.ClientHttpRequestFactory> requestFactory)
```
    Set the ClientHttpRequestFactory class that should be used with the RestTemplate.
    
    Parameters:
    
    requestFactory - the request factory to use
    
    Returns:
    
    a new builder instance
  - requestFactory
```
public RestTemplateBuilder requestFactory(java.util.function.Supplier<org.springframework.http.client.ClientHttpRequestFactory> requestFactory)
```
    Set the Supplier of ClientHttpRequestFactory that should be called each time we build() a new RestTemplate instance.
    
    Parameters:
    
    requestFactory - the supplier for the request factory
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.0.0
  - uriTemplateHandler
```
public RestTemplateBuilder uriTemplateHandler(org.springframework.web.util.UriTemplateHandler uriTemplateHandler)
```
    Set the UriTemplateHandler that should be used with the RestTemplate.
    
    Parameters:
    
    uriTemplateHandler - the URI template handler to use
    
    Returns:
    
    a new builder instance
  - errorHandler
```
public RestTemplateBuilder errorHandler(org.springframework.web.client.ResponseErrorHandler errorHandler)
```
    Set the ResponseErrorHandler that should be used with the RestTemplate.
    
    Parameters:
    
    errorHandler - the error handler to use
    
    Returns:
    
    a new builder instance
  - basicAuthentication
```
public RestTemplateBuilder basicAuthentication(java.lang.String username,
                                               java.lang.String password)
```
    Add HTTP Basic Authentication to requests with the given username/password pair, unless a custom Authorization header has been set before.
    
    Parameters:
    
    username - the user name
    
    password - the password
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.1.0
    
    See Also:
    
    basicAuthentication(String, String, Charset)
  - basicAuthentication
```
public RestTemplateBuilder basicAuthentication(java.lang.String username,
                                               java.lang.String password,
                                               java.nio.charset.Charset charset)
```
    Add HTTP Basic Authentication to requests with the given username/password pair, unless a custom Authorization header has been set before.
    
    Parameters:
    
    username - the user name
    
    password - the password
    
    charset - the charset to use
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.2.0
  - defaultHeader
```
public RestTemplateBuilder defaultHeader(java.lang.String name,
                                         java.lang.String... values)
```
    Add a default header that will be set if not already present on the outgoing ClientHttpRequest.
    
    Parameters:
    
    name - the name of the header
    
    values - the header values
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.2.0
  - setConnectTimeout
```
public RestTemplateBuilder setConnectTimeout(java.time.Duration connectTimeout)
```
    Sets the connection timeout on the underlying ClientHttpRequestFactory.
    
    Parameters:
    
    connectTimeout - the connection timeout
    
    Returns:
    
    a new builder instance.
    
    Since:
    
    2.1.0
  - setReadTimeout
```
public RestTemplateBuilder setReadTimeout(java.time.Duration readTimeout)
```
    Sets the read timeout on the underlying ClientHttpRequestFactory.
    
    Parameters:
    
    readTimeout - the read timeout
    
    Returns:
    
    a new builder instance.
    
    Since:
    
    2.1.0
  - setBufferRequestBody
```
public RestTemplateBuilder setBufferRequestBody(boolean bufferRequestBody)
```
    Sets if the underlying ClientHttpRequestFactory should buffer the request body internally.
    
    Parameters:
    
    bufferRequestBody - value of the bufferRequestBody parameter
    
    Returns:
    
    a new builder instance.
    
    Since:
    
    2.2.0
    
    See Also:
    
    SimpleClientHttpRequestFactory.setBufferRequestBody(boolean), HttpComponentsClientHttpRequestFactory.setBufferRequestBody(boolean)
  - customizers
```
public RestTemplateBuilder customizers(RestTemplateCustomizer... customizers)
```
    Set the RestTemplateCustomizers that should be applied to the RestTemplate. Customizers are applied in the order that they were added after builder configuration has been applied. Setting this value will replace any previously configured customizers.
    
    Parameters:
    
    customizers - the customizers to set
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    additionalCustomizers(RestTemplateCustomizer...)
  - customizers
```
public RestTemplateBuilder customizers(java.util.Collection<? extends RestTemplateCustomizer> customizers)
```
    Set the RestTemplateCustomizers that should be applied to the RestTemplate. Customizers are applied in the order that they were added after builder configuration has been applied. Setting this value will replace any previously configured customizers.
    
    Parameters:
    
    customizers - the customizers to set
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    additionalCustomizers(RestTemplateCustomizer...)
  - additionalCustomizers
```
public RestTemplateBuilder additionalCustomizers(RestTemplateCustomizer... customizers)
```
    Add RestTemplateCustomizers that should be applied to the RestTemplate. Customizers are applied in the order that they were added after builder configuration has been applied.
    
    Parameters:
    
    customizers - the customizers to add
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    customizers(RestTemplateCustomizer...)
  - additionalCustomizers
```
public RestTemplateBuilder additionalCustomizers(java.util.Collection<? extends RestTemplateCustomizer> customizers)
```
    Add RestTemplateCustomizers that should be applied to the RestTemplate. Customizers are applied in the order that they were added after builder configuration has been applied.
    
    Parameters:
    
    customizers - the customizers to add
    
    Returns:
    
    a new builder instance
    
    See Also:
    
    customizers(RestTemplateCustomizer...)
  - requestCustomizers
```
public RestTemplateBuilder requestCustomizers(RestTemplateRequestCustomizer<?>... requestCustomizers)
```
    Set the RestTemplateRequestCustomizers that should be applied to the ClientHttpRequest. Customizers are applied in the order that they were added. Setting this value will replace any previously configured request customizers.
    
    Parameters:
    
    requestCustomizers - the request customizers to set
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.2.0
    
    See Also:
    
    additionalRequestCustomizers(RestTemplateRequestCustomizer...)
  - requestCustomizers
```
public RestTemplateBuilder requestCustomizers(java.util.Collection<? extends RestTemplateRequestCustomizer<?>> requestCustomizers)
```
    Set the RestTemplateRequestCustomizers that should be applied to the ClientHttpRequest. Customizers are applied in the order that they were added. Setting this value will replace any previously configured request customizers.
    
    Parameters:
    
    requestCustomizers - the request customizers to set
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.2.0
    
    See Also:
    
    additionalRequestCustomizers(RestTemplateRequestCustomizer...)
  - additionalRequestCustomizers
```
public RestTemplateBuilder additionalRequestCustomizers(RestTemplateRequestCustomizer<?>... requestCustomizers)
```
    Add the RestTemplateRequestCustomizers that should be applied to the ClientHttpRequest. Customizers are applied in the order that they were added.
    
    Parameters:
    
    requestCustomizers - the request customizers to add
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.2.0
    
    See Also:
    
    requestCustomizers(RestTemplateRequestCustomizer...)
  - additionalRequestCustomizers
```
public RestTemplateBuilder additionalRequestCustomizers(java.util.Collection<? extends RestTemplateRequestCustomizer<?>> requestCustomizers)
```
    Add the RestTemplateRequestCustomizers that should be applied to the ClientHttpRequest. Customizers are applied in the order that they were added.
    
    Parameters:
    
    requestCustomizers - the request customizers to add
    
    Returns:
    
    a new builder instance
    
    Since:
    
    2.2.0
    
    See Also:
    
    requestCustomizers(Collection)
  - build
```
public org.springframework.web.client.RestTemplate build()
```
    Build a new RestTemplate instance and configure it using this builder.
    
    Returns:
    
    a configured RestTemplate instance.
    
    See Also:
    
    build(Class), configure(RestTemplate)
  - build
```
public <T extends org.springframework.web.client.RestTemplate> T build(java.lang.Class<T> restTemplateClass)
```
    Build a new RestTemplate instance of the specified type and configure it using this builder.
    
    Type Parameters:
    
    T - the type of rest template
    
    Parameters:
    
    restTemplateClass - the template type to create
    
    Returns:
    
    a configured RestTemplate instance.
    
    See Also:
    
    build(), configure(RestTemplate)
  - configure
```
public <T extends org.springframework.web.client.RestTemplate> T configure(T restTemplate)
```
    Configure the provided RestTemplate instance using this builder.
    
    Type Parameters:
    
    T - the type of rest template
    
    Parameters:
    
    restTemplate - the RestTemplate to configure
    
    Returns:
    
    the rest template instance
    
    See Also:
    
    build(), build(Class)
  - buildRequestFactory
```
public org.springframework.http.client.ClientHttpRequestFactory buildRequestFactory()
```
    Build a new ClientHttpRequestFactory instance using the settings of this builder.
    
    Returns:
    
    a ClientHttpRequestFactory or null
    
    Since:
    
    2.2.0

Class RestTemplateBuilder

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RestTemplateBuilder

Method Detail

detectRequestFactory

rootUri

messageConverters

messageConverters

additionalMessageConverters

additionalMessageConverters

defaultMessageConverters

interceptors

interceptors

additionalInterceptors

additionalInterceptors

requestFactory

requestFactory

uriTemplateHandler

errorHandler

basicAuthentication

basicAuthentication

defaultHeader

setConnectTimeout

setReadTimeout

setBufferRequestBody

customizers

customizers

additionalCustomizers

additionalCustomizers

requestCustomizers

requestCustomizers

additionalRequestCustomizers

additionalRequestCustomizers

build

build

configure

buildRequestFactory