URL unsafe characters get decoded before the request is sent

[Breina]

If using the Apache Http Client, when the path contains URL encoded unsafe characters, they get decoded while setting up the RestTemplate, causing an internal exception.

Feign config

@Configuration
public class FeignConfig {

    @Bean
    public TestClient testClient() {
        return Feign.builder()
                .client(new ApacheHttpClient(org.apache.http.impl.client.HttpClientBuilder.create().build()))
                .target(TestClient.class, "https://website.com/path");
    }
}

Client

public interface TestClient {
    @RequestLine("GET /")
    String findSomething(URI uri);
}

Usage

@Component
public class TestComponent {

    private final TestClient testClient;

    public TestComponent(TestClient testClient) {
        this.testClient = testClient;
    }

    @PostConstruct
    public void test() {
        testClient.findSomething(URI.create("https://website.com/path/text%7Ctext"));
    }
}

Result

Caused by: feign.RetryableException: URL 'https://website.com/path/text|text/' couldn't be parsed into a URI executing GET https://website.com/path/text|text/
	at feign.FeignException.errorExecuting(FeignException.java:277) ~[feign-core-12.4.jar:na]
	at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:110) ~[feign-core-12.4.jar:na]
	at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:70) ~[feign-core-12.4.jar:na]
	at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:96) ~[feign-core-12.4.jar:na]
	at jdk.proxy2/jdk.proxy2.$Proxy43.findSomething(Unknown Source) ~[na:na]
	at com.example.test.TestComponent.test(TestComponent.java:18) ~[classes/:na]
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:577) ~[na:na]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMethod.invoke(InitDestroyAnnotationBeanPostProcessor.java:457) ~[spring-beans-6.0.13.jar:6.0.13]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:401) ~[spring-beans-6.0.13.jar:6.0.13]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:219) ~[spring-beans-6.0.13.jar:6.0.13]
	... 17 common frames omitted
Caused by: java.io.IOException: URL 'https://website.com/path/text|text/' couldn't be parsed into a URI
	at feign.httpclient.ApacheHttpClient.execute(ApacheHttpClient.java:79) ~[feign-httpclient-12.4.jar:na]
	at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:100) ~[feign-core-12.4.jar:na]
	... 26 common frames omitted
Caused by: java.net.URISyntaxException: Illegal character in path at index 29: https://website.com/path/text|text/
	at java.base/java.net.URI$Parser.fail(URI.java:2973) ~[na:na]
	at java.base/java.net.URI$Parser.checkChars(URI.java:3144) ~[na:na]
	at java.base/java.net.URI$Parser.parseHierarchical(URI.java:3226) ~[na:na]
	at java.base/java.net.URI$Parser.parse(URI.java:3174) ~[na:na]
	at java.base/java.net.URI.<init>(URI.java:623) ~[na:na]
	at org.apache.http.client.utils.URIBuilder.<init>(URIBuilder.java:82) ~[httpclient-4.5.14.jar:4.5.14]
	at feign.httpclient.ApacheHttpClient.toHttpUriRequest(ApacheHttpClient.java:99) ~[feign-httpclient-12.4.jar:na]
	at feign.httpclient.ApacheHttpClient.execute(ApacheHttpClient.java:77) ~[feign-httpclient-12.4.jar:na]
	... 27 common frames omitted