Tôi nhận được dưới đây là ngoại lệ khi chạy ứng dụng khởi động mùa xuân trong khởi động:Không thể autowire lĩnh vực: RestTemplate trong ứng dụng khởi động mùa xuân
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.web.client.RestTemplate com.micro.test.controller.TestController.restTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.web.client.RestTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Tôi autowiring RestTemplate trong TestController tôi. Tôi đang sử dụng Maven để quản lý sự phụ thuộc.
TestMicroServiceApplication.java
package com.micro.test;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class TestMicroServiceApplication {
public static void main(String[] args) {
SpringApplication.run(TestMicroServiceApplication.class, args);
}
}
TestController.java
package com.micro.test.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
@RestController
public class TestController {
@Autowired
private RestTemplate restTemplate;
@RequestMapping(value="/micro/order/{id}",
method=RequestMethod.GET,
produces=MediaType.ALL_VALUE)
public String placeOrder(@PathVariable("id") int customerId){
System.out.println("Hit ===> PlaceOrder");
Object[] customerJson = restTemplate.getForObject("http://localhost:8080/micro/customers", Object[].class);
System.out.println(customerJson.toString());
return "false";
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.micro.test</groupId>
<artifactId>Test-MicroService</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Test-MicroService</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
upvoting câu hỏi của bạn vì nó không phải là rõ ràng rằng khi mọi thứ được liên kết một cách kỳ diệu thì 'RestTemplate' sẽ không được tạo tự động cho bạn. –
Upvoted - hướng dẫn trên trang riêng của Spring Boot không nói gì về việc tạo một Bean RestTemplate !! – Matt