Question

我在下面的代码中使用RestTemplate发出GET请求。如果我直接从chrome / postman调用该请求，则该请求正常。但是，它不能从代码中工作。似乎忽略了rootUri

import org.springframework.boot.web.client.RestTemplateBuilder
import org.springframework.stereotype.Component
import org.springframework.web.client.RestTemplate

@Component
class Provider(
    private val builder: RestTemplateBuilder
) {
    var client: RestTemplate = builder.rootUri("http://foo.test.com/API/rest").build()

    fun sendMessage(request: Request) {

        println("here is the request")
        try {
            val resp = client.getForEntity(
                "?userid=123456&password=1234356&method=TEST_MESSAGE", Response::class.java
            )
        } catch (e: Exception) {
            println("this is the error")
            e.printStackTrace()
        }
    }

}

这是我得到的例外。

org.springframework.web.client.ResourceAccessException: I/O error on GET request for "": null; nested exception is org.apache.http.client.ClientProtocolException
....
....
Caused by: org.apache.http.client.ClientProtocolException
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:187)
Caused by: org.apache.http.client.ClientProtocolException
....
....
Caused by: org.apache.http.ProtocolException: Target host is not specified
    at org.apache.http.impl.conn.DefaultRoutePlanner.determineRoute(DefaultRoutePlanner.java:71)
    at org.apache.http.impl.client.InternalHttpClient.determineRoute(InternalHttpClient.java:125)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
Caused by: org.apache.http.ProtocolException: Target host is not specified

位于http://collabedit.com/t6h2f

的完整跟踪

感谢您的帮助。预先感谢。

编辑-是否可以通过在发出请求的restTemplate中检查/打印URL的方法？

Answer 1

您会错过一件事，如果您查看RestTemplateBuilder.rootUri（..）文档，他们会将rootUri设置为以/开头的任何请求。但是如果不添加它，它将忽略rootUri值。

因此，如果您仅将其更改为此，它将起作用：

val resp = client.getForEntity(
                "/?userid=123456&password=1234356&method=TEST_MESSAGE", Response::class.java
            )

Reference

更新：

var client: RestTemplate = builder.rootUri("http://foo.test.com/").build()

    fun sendMessage(request: Request) {

        println("here is the request")
        try {
            val resp = client.getForEntity(
                "/API/rest?userid=123456&password=1234356&method=TEST_MESSAGE", Response::class.java
            )
        } catch (e: Exception) {
            println("this is the error")
            e.printStackTrace()
        }
    }

使用RestTemplate Http获取请求-org.springframework.web.client.ResourceAccessException

1 个答案: