相关疑难解决方法(0)

Spring FrameworkRestTemplate文档中有注释：

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注意：截至5.0此类处于维护模式，仅接受较小的\n更改请求和错误。请考虑使用org.springframework.web.reactive.client.WebClient具有更现代的 API 并支持同步、异步和流式传输的方案。

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当我尝试使用WebClient并进行同步调用时，如下所示：

@RestController\n@RequestMapping("/rating")\npublic class Controller {\n\n    @Autowired\n    private RestTemplate restTemplate;\n\n    @Autowired\n    private WebClient.Builder webClientBuilder;\n\n    @RequestMapping("/{userId}")\n    public UserRating getUserRating(@PathVariable("userId") String userId) {\n\n//      return restTemplate.getForObject("http://localhost:8083/ratingsdata/user/" + userId, UserRating.class);\n        return webClientBuilder.build()\n                .get().uri("http://localhost:8083/ratingsdata/user/" + userId)\n                .retrieve()\n                .bodyToMono(UserRating.class)\n                .block();\n\n    }\n}\n

项目pom.xml：

<?xml version="1.0" encoding="UTF-8"?>\n<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"\n         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">\n    <modelVersion>4.0.0</modelVersion>\n    <parent>\n        <groupId>org.springframework.boot</groupId>\n        <artifactId>spring-boot-starter-parent</artifactId>\n        <version>2.4.0</version>\n        <relativePath/> <!-- lookup parent from repository -->\n    </parent>\n    <groupId>com.daren.tutorial.movie</groupId>\n    <artifactId>catalog</artifactId>\n    <version>0.0.1-SNAPSHOT</version>\n    <name>catalog</name>\n …